Commit | Line | Data |
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b46a6a83 | 1 | /* Process support for GNU Emacs on the Microsoft Windows API. |
acaf905b | 2 | Copyright (C) 1992, 1995, 1999-2012 Free Software Foundation, Inc. |
6cdfb6e6 | 3 | |
3b7ad313 EN |
4 | This file is part of GNU Emacs. |
5 | ||
9ec0b715 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
3b7ad313 | 7 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
3b7ad313 EN |
10 | |
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
6cdfb6e6 | 18 | |
9ec0b715 | 19 | /* |
6cdfb6e6 RS |
20 | Drew Bliss Oct 14, 1993 |
21 | Adapted from alarm.c by Tim Fleehart | |
22 | */ | |
23 | ||
24 | #include <stdio.h> | |
25 | #include <stdlib.h> | |
26 | #include <errno.h> | |
a68089e4 | 27 | #include <ctype.h> |
6cdfb6e6 | 28 | #include <io.h> |
c519b5e1 | 29 | #include <fcntl.h> |
6cdfb6e6 | 30 | #include <signal.h> |
51f635c4 | 31 | #include <sys/file.h> |
6cdfb6e6 | 32 | |
c519b5e1 | 33 | /* must include CRT headers *before* config.h */ |
4838e624 | 34 | #include <config.h> |
4838e624 | 35 | |
c519b5e1 GV |
36 | #undef signal |
37 | #undef wait | |
38 | #undef spawnve | |
39 | #undef select | |
40 | #undef kill | |
41 | ||
6cdfb6e6 | 42 | #include <windows.h> |
42c95ffb AI |
43 | #ifdef __GNUC__ |
44 | /* This definition is missing from mingw32 headers. */ | |
ed3751c8 | 45 | extern BOOL WINAPI IsValidLocale (LCID, DWORD); |
42c95ffb | 46 | #endif |
6cdfb6e6 | 47 | |
d613418b EZ |
48 | #ifdef HAVE_LANGINFO_CODESET |
49 | #include <nl_types.h> | |
50 | #include <langinfo.h> | |
51 | #endif | |
52 | ||
6cdfb6e6 | 53 | #include "lisp.h" |
489f9371 | 54 | #include "w32.h" |
501199a3 | 55 | #include "w32common.h" |
b2fc9f3d | 56 | #include "w32heap.h" |
6cdfb6e6 | 57 | #include "systime.h" |
3d7eead0 GV |
58 | #include "syswait.h" |
59 | #include "process.h" | |
e7c15bba | 60 | #include "syssignal.h" |
ef79fbba | 61 | #include "w32term.h" |
f481eb31 | 62 | #include "dispextern.h" /* for xstrcasecmp */ |
b23077df | 63 | #include "coding.h" |
3d7eead0 | 64 | |
8747ac3f EZ |
65 | #define RVA_TO_PTR(var,section,filedata) \ |
66 | ((void *)((section)->PointerToRawData \ | |
62aba0d4 | 67 | + ((DWORD_PTR)(var) - (section)->VirtualAddress) \ |
8747ac3f EZ |
68 | + (filedata).file_base)) |
69 | ||
b2fc9f3d | 70 | Lisp_Object Qhigh, Qlow; |
817abdf6 | 71 | |
6cdfb6e6 RS |
72 | /* Signal handlers...SIG_DFL == 0 so this is initialized correctly. */ |
73 | static signal_handler sig_handlers[NSIG]; | |
74 | ||
c06c382a EZ |
75 | static sigset_t sig_mask; |
76 | ||
77 | static CRITICAL_SECTION crit_sig; | |
78 | ||
16b22fef | 79 | /* Improve on the CRT 'signal' implementation so that we could record |
c06c382a | 80 | the SIGCHLD handler and fake interval timers. */ |
177c0ea7 | 81 | signal_handler |
c519b5e1 | 82 | sys_signal (int sig, signal_handler handler) |
6cdfb6e6 RS |
83 | { |
84 | signal_handler old; | |
177c0ea7 | 85 | |
16b22fef | 86 | /* SIGCHLD is needed for supporting subprocesses, see sys_kill |
c06c382a EZ |
87 | below. SIGALRM and SIGPROF are used by setitimer. All the |
88 | others are the only ones supported by the MS runtime. */ | |
16b22fef | 89 | if (!(sig == SIGCHLD || sig == SIGSEGV || sig == SIGILL |
c06c382a EZ |
90 | || sig == SIGFPE || sig == SIGABRT || sig == SIGTERM |
91 | || sig == SIGALRM || sig == SIGPROF)) | |
6cdfb6e6 RS |
92 | { |
93 | errno = EINVAL; | |
94 | return SIG_ERR; | |
95 | } | |
96 | old = sig_handlers[sig]; | |
16b22fef EZ |
97 | /* SIGABRT is treated specially because w32.c installs term_ntproc |
98 | as its handler, so we don't want to override that afterwards. | |
99 | Aborting Emacs works specially anyway: either by calling | |
100 | emacs_abort directly or through terminate_due_to_signal, which | |
101 | calls emacs_abort through emacs_raise. */ | |
102 | if (!(sig == SIGABRT && old == term_ntproc)) | |
103 | { | |
104 | sig_handlers[sig] = handler; | |
c06c382a | 105 | if (!(sig == SIGCHLD || sig == SIGALRM || sig == SIGPROF)) |
16b22fef EZ |
106 | signal (sig, handler); |
107 | } | |
6cdfb6e6 RS |
108 | return old; |
109 | } | |
110 | ||
3e6d6928 EZ |
111 | /* Emulate sigaction. */ |
112 | int | |
113 | sigaction (int sig, const struct sigaction *act, struct sigaction *oact) | |
114 | { | |
16b22fef EZ |
115 | signal_handler old = SIG_DFL; |
116 | int retval = 0; | |
117 | ||
118 | if (act) | |
119 | old = sys_signal (sig, act->sa_handler); | |
120 | else if (oact) | |
121 | old = sig_handlers[sig]; | |
3e6d6928 | 122 | |
16b22fef | 123 | if (old == SIG_ERR) |
3e6d6928 EZ |
124 | { |
125 | errno = EINVAL; | |
16b22fef | 126 | retval = -1; |
3e6d6928 | 127 | } |
3e6d6928 EZ |
128 | if (oact) |
129 | { | |
130 | oact->sa_handler = old; | |
131 | oact->sa_flags = 0; | |
132 | oact->sa_mask = empty_mask; | |
133 | } | |
16b22fef | 134 | return retval; |
3e6d6928 EZ |
135 | } |
136 | ||
c06c382a EZ |
137 | /* Emulate signal sets and blocking of signals used by timers. */ |
138 | ||
139 | int | |
140 | sigemptyset (sigset_t *set) | |
141 | { | |
142 | *set = 0; | |
143 | return 0; | |
144 | } | |
145 | ||
146 | int | |
147 | sigaddset (sigset_t *set, int signo) | |
148 | { | |
149 | if (!set) | |
150 | { | |
151 | errno = EINVAL; | |
152 | return -1; | |
153 | } | |
154 | if (signo < 0 || signo >= NSIG) | |
155 | { | |
156 | errno = EINVAL; | |
157 | return -1; | |
158 | } | |
159 | ||
160 | *set |= (1U << signo); | |
161 | ||
162 | return 0; | |
163 | } | |
164 | ||
165 | int | |
166 | sigfillset (sigset_t *set) | |
167 | { | |
168 | if (!set) | |
169 | { | |
170 | errno = EINVAL; | |
171 | return -1; | |
172 | } | |
173 | ||
174 | *set = 0xFFFFFFFF; | |
175 | return 0; | |
176 | } | |
177 | ||
178 | int | |
179 | sigprocmask (int how, const sigset_t *set, sigset_t *oset) | |
180 | { | |
181 | if (!(how == SIG_BLOCK || how == SIG_UNBLOCK || how == SIG_SETMASK)) | |
182 | { | |
183 | errno = EINVAL; | |
184 | return -1; | |
185 | } | |
186 | ||
187 | if (oset) | |
188 | *oset = sig_mask; | |
189 | ||
190 | if (!set) | |
191 | return 0; | |
192 | ||
193 | switch (how) | |
194 | { | |
195 | case SIG_BLOCK: | |
196 | sig_mask |= *set; | |
197 | break; | |
198 | case SIG_SETMASK: | |
199 | sig_mask = *set; | |
200 | break; | |
201 | case SIG_UNBLOCK: | |
202 | /* FIXME: Catch signals that are blocked and reissue them when | |
203 | they are unblocked. Important for SIGALRM and SIGPROF only. */ | |
204 | sig_mask &= ~(*set); | |
205 | break; | |
206 | } | |
207 | ||
208 | return 0; | |
209 | } | |
210 | ||
211 | int | |
212 | pthread_sigmask (int how, const sigset_t *set, sigset_t *oset) | |
213 | { | |
214 | if (sigprocmask (how, set, oset) == -1) | |
215 | return EINVAL; | |
216 | return 0; | |
217 | } | |
218 | ||
219 | int | |
220 | sigismember (const sigset_t *set, int signo) | |
221 | { | |
222 | if (signo < 0 || signo >= NSIG) | |
223 | { | |
224 | errno = EINVAL; | |
225 | return -1; | |
226 | } | |
227 | if (signo > sizeof (*set) * BITS_PER_CHAR) | |
228 | emacs_abort (); | |
229 | ||
230 | return (*set & (1U << signo)) != 0; | |
231 | } | |
232 | ||
233 | int | |
234 | setpgrp (int pid, int gid) | |
235 | { | |
236 | return 0; | |
237 | } | |
238 | ||
7e8b50d9 EZ |
239 | pid_t |
240 | getpgrp (void) | |
241 | { | |
242 | return getpid (); | |
243 | } | |
244 | ||
245 | int | |
246 | setpgid (pid_t pid, pid_t pgid) | |
247 | { | |
248 | return 0; | |
249 | } | |
250 | ||
c06c382a EZ |
251 | /* Emulations of interval timers. |
252 | ||
253 | Limitations: only ITIMER_REAL and ITIMER_PROF are supported. | |
254 | ||
255 | Implementation: a separate thread is started for each timer type, | |
256 | the thread calls the appropriate signal handler when the timer | |
257 | expires, after stopping the thread which installed the timer. */ | |
258 | ||
c06c382a | 259 | struct itimer_data { |
2e612797 EZ |
260 | volatile ULONGLONG expire; |
261 | volatile ULONGLONG reload; | |
262 | volatile int terminate; | |
c06c382a EZ |
263 | int type; |
264 | HANDLE caller_thread; | |
265 | HANDLE timer_thread; | |
266 | }; | |
267 | ||
6c16c13e | 268 | static ULONGLONG ticks_now; |
c06c382a | 269 | static struct itimer_data real_itimer, prof_itimer; |
6c16c13e | 270 | static ULONGLONG clocks_min; |
f0e5f225 EZ |
271 | /* If non-zero, itimers are disabled. Used during shutdown, when we |
272 | delete the critical sections used by the timer threads. */ | |
273 | static int disable_itimers; | |
c06c382a EZ |
274 | |
275 | static CRITICAL_SECTION crit_real, crit_prof; | |
276 | ||
15cc05e9 | 277 | /* GetThreadTimes is not available on Windows 9X and possibly also on 2K. */ |
6c16c13e EZ |
278 | typedef BOOL (WINAPI *GetThreadTimes_Proc) ( |
279 | HANDLE hThread, | |
280 | LPFILETIME lpCreationTime, | |
281 | LPFILETIME lpExitTime, | |
282 | LPFILETIME lpKernelTime, | |
283 | LPFILETIME lpUserTime); | |
284 | ||
285 | static GetThreadTimes_Proc s_pfn_Get_Thread_Times; | |
286 | ||
640bf8ad EZ |
287 | #define MAX_SINGLE_SLEEP 30 |
288 | #define TIMER_TICKS_PER_SEC 1000 | |
289 | ||
6c16c13e EZ |
290 | /* Return a suitable time value, in 1-ms units, for THREAD, a handle |
291 | to a thread. If THREAD is NULL or an invalid handle, return the | |
292 | current wall-clock time since January 1, 1601 (UTC). Otherwise, | |
293 | return the sum of kernel and user times used by THREAD since it was | |
294 | created, plus its creation time. */ | |
295 | static ULONGLONG | |
296 | w32_get_timer_time (HANDLE thread) | |
297 | { | |
298 | ULONGLONG retval; | |
299 | int use_system_time = 1; | |
640bf8ad EZ |
300 | /* The functions below return times in 100-ns units. */ |
301 | const int tscale = 10 * TIMER_TICKS_PER_SEC; | |
6c16c13e EZ |
302 | |
303 | if (thread && thread != INVALID_HANDLE_VALUE | |
304 | && s_pfn_Get_Thread_Times != NULL) | |
305 | { | |
306 | FILETIME creation_ftime, exit_ftime, kernel_ftime, user_ftime; | |
307 | ULARGE_INTEGER temp_creation, temp_kernel, temp_user; | |
308 | ||
309 | if (s_pfn_Get_Thread_Times (thread, &creation_ftime, &exit_ftime, | |
310 | &kernel_ftime, &user_ftime)) | |
311 | { | |
312 | use_system_time = 0; | |
313 | temp_creation.LowPart = creation_ftime.dwLowDateTime; | |
314 | temp_creation.HighPart = creation_ftime.dwHighDateTime; | |
315 | temp_kernel.LowPart = kernel_ftime.dwLowDateTime; | |
316 | temp_kernel.HighPart = kernel_ftime.dwHighDateTime; | |
317 | temp_user.LowPart = user_ftime.dwLowDateTime; | |
318 | temp_user.HighPart = user_ftime.dwHighDateTime; | |
319 | retval = | |
640bf8ad EZ |
320 | temp_creation.QuadPart / tscale + temp_kernel.QuadPart / tscale |
321 | + temp_user.QuadPart / tscale; | |
6c16c13e EZ |
322 | } |
323 | else | |
324 | DebPrint (("GetThreadTimes failed with error code %lu\n", | |
325 | GetLastError ())); | |
326 | } | |
327 | ||
328 | if (use_system_time) | |
329 | { | |
330 | FILETIME current_ftime; | |
331 | ULARGE_INTEGER temp; | |
332 | ||
333 | GetSystemTimeAsFileTime (¤t_ftime); | |
334 | ||
335 | temp.LowPart = current_ftime.dwLowDateTime; | |
336 | temp.HighPart = current_ftime.dwHighDateTime; | |
337 | ||
640bf8ad | 338 | retval = temp.QuadPart / tscale; |
6c16c13e EZ |
339 | } |
340 | ||
341 | return retval; | |
342 | } | |
343 | ||
6c16c13e | 344 | /* Thread function for a timer thread. */ |
c06c382a EZ |
345 | static DWORD WINAPI |
346 | timer_loop (LPVOID arg) | |
347 | { | |
348 | struct itimer_data *itimer = (struct itimer_data *)arg; | |
349 | int which = itimer->type; | |
350 | int sig = (which == ITIMER_REAL) ? SIGALRM : SIGPROF; | |
351 | CRITICAL_SECTION *crit = (which == ITIMER_REAL) ? &crit_real : &crit_prof; | |
640bf8ad | 352 | const DWORD max_sleep = MAX_SINGLE_SLEEP * 1000 / TIMER_TICKS_PER_SEC; |
6c16c13e | 353 | HANDLE hth = (which == ITIMER_REAL) ? NULL : itimer->caller_thread; |
c06c382a EZ |
354 | |
355 | while (1) | |
356 | { | |
357 | DWORD sleep_time; | |
358 | signal_handler handler; | |
6c16c13e | 359 | ULONGLONG now, expire, reload; |
c06c382a EZ |
360 | |
361 | /* Load new values if requested by setitimer. */ | |
362 | EnterCriticalSection (crit); | |
363 | expire = itimer->expire; | |
364 | reload = itimer->reload; | |
365 | LeaveCriticalSection (crit); | |
366 | if (itimer->terminate) | |
367 | return 0; | |
368 | ||
6c16c13e | 369 | if (expire == 0) |
c06c382a EZ |
370 | { |
371 | /* We are idle. */ | |
372 | Sleep (max_sleep); | |
373 | continue; | |
374 | } | |
375 | ||
6c16c13e | 376 | if (expire > (now = w32_get_timer_time (hth))) |
c06c382a EZ |
377 | sleep_time = expire - now; |
378 | else | |
379 | sleep_time = 0; | |
380 | /* Don't sleep too long at a time, to be able to see the | |
381 | termination flag without too long a delay. */ | |
382 | while (sleep_time > max_sleep) | |
383 | { | |
384 | if (itimer->terminate) | |
385 | return 0; | |
386 | Sleep (max_sleep); | |
6c16c13e | 387 | EnterCriticalSection (crit); |
c06c382a | 388 | expire = itimer->expire; |
6c16c13e EZ |
389 | LeaveCriticalSection (crit); |
390 | sleep_time = | |
391 | (expire > (now = w32_get_timer_time (hth))) ? expire - now : 0; | |
c06c382a EZ |
392 | } |
393 | if (itimer->terminate) | |
394 | return 0; | |
395 | if (sleep_time > 0) | |
396 | { | |
640bf8ad | 397 | Sleep (sleep_time * 1000 / TIMER_TICKS_PER_SEC); |
c06c382a EZ |
398 | /* Always sleep past the expiration time, to make sure we |
399 | never call the handler _before_ the expiration time, | |
ace917bd | 400 | always slightly after it. Sleep(5) makes sure we don't |
6c16c13e EZ |
401 | hog the CPU by calling 'w32_get_timer_time' with high |
402 | frequency, and also let other threads work. */ | |
403 | while (w32_get_timer_time (hth) < expire) | |
ace917bd | 404 | Sleep (5); |
c06c382a EZ |
405 | } |
406 | ||
6c16c13e EZ |
407 | EnterCriticalSection (crit); |
408 | expire = itimer->expire; | |
409 | LeaveCriticalSection (crit); | |
410 | if (expire == 0) | |
c06c382a EZ |
411 | continue; |
412 | ||
413 | /* Time's up. */ | |
414 | handler = sig_handlers[sig]; | |
415 | if (!(handler == SIG_DFL || handler == SIG_IGN || handler == SIG_ERR) | |
416 | /* FIXME: Don't ignore masked signals. Instead, record that | |
417 | they happened and reissue them when the signal is | |
418 | unblocked. */ | |
419 | && !sigismember (&sig_mask, sig) | |
420 | /* Simulate masking of SIGALRM and SIGPROF when processing | |
421 | fatal signals. */ | |
422 | && !fatal_error_in_progress | |
423 | && itimer->caller_thread) | |
424 | { | |
425 | /* Simulate a signal delivered to the thread which installed | |
426 | the timer, by suspending that thread while the handler | |
427 | runs. */ | |
428 | DWORD result = SuspendThread (itimer->caller_thread); | |
429 | ||
430 | if (result == (DWORD)-1) | |
db9848e4 EZ |
431 | return 2; |
432 | ||
c06c382a EZ |
433 | handler (sig); |
434 | ResumeThread (itimer->caller_thread); | |
435 | } | |
436 | ||
c06c382a EZ |
437 | /* Update expiration time and loop. */ |
438 | EnterCriticalSection (crit); | |
439 | expire = itimer->expire; | |
6c16c13e EZ |
440 | if (expire == 0) |
441 | { | |
442 | LeaveCriticalSection (crit); | |
443 | continue; | |
444 | } | |
c06c382a EZ |
445 | reload = itimer->reload; |
446 | if (reload > 0) | |
447 | { | |
6c16c13e | 448 | now = w32_get_timer_time (hth); |
c06c382a EZ |
449 | if (expire <= now) |
450 | { | |
6c16c13e | 451 | ULONGLONG lag = now - expire; |
c06c382a EZ |
452 | |
453 | /* If we missed some opportunities (presumably while | |
454 | sleeping or while the signal handler ran), skip | |
455 | them. */ | |
456 | if (lag > reload) | |
457 | expire = now - (lag % reload); | |
458 | ||
459 | expire += reload; | |
460 | } | |
461 | } | |
462 | else | |
463 | expire = 0; /* become idle */ | |
464 | itimer->expire = expire; | |
465 | LeaveCriticalSection (crit); | |
466 | } | |
467 | return 0; | |
468 | } | |
469 | ||
470 | static void | |
471 | stop_timer_thread (int which) | |
472 | { | |
473 | struct itimer_data *itimer = | |
474 | (which == ITIMER_REAL) ? &real_itimer : &prof_itimer; | |
475 | int i; | |
a65fbb5f EZ |
476 | DWORD err, exit_code = 255; |
477 | BOOL status; | |
c06c382a EZ |
478 | |
479 | /* Signal the thread that it should terminate. */ | |
480 | itimer->terminate = 1; | |
481 | ||
482 | if (itimer->timer_thread == NULL) | |
483 | return; | |
484 | ||
485 | /* Wait for the timer thread to terminate voluntarily, then kill it | |
486 | if it doesn't. This loop waits twice more than the maximum | |
487 | amount of time a timer thread sleeps, see above. */ | |
488 | for (i = 0; i < MAX_SINGLE_SLEEP / 5; i++) | |
489 | { | |
490 | if (!((status = GetExitCodeThread (itimer->timer_thread, &exit_code)) | |
491 | && exit_code == STILL_ACTIVE)) | |
492 | break; | |
493 | Sleep (10); | |
494 | } | |
495 | if ((status == FALSE && (err = GetLastError ()) == ERROR_INVALID_HANDLE) | |
496 | || exit_code == STILL_ACTIVE) | |
497 | { | |
498 | if (!(status == FALSE && err == ERROR_INVALID_HANDLE)) | |
499 | TerminateThread (itimer->timer_thread, 0); | |
500 | } | |
501 | ||
502 | /* Clean up. */ | |
503 | CloseHandle (itimer->timer_thread); | |
504 | itimer->timer_thread = NULL; | |
505 | if (itimer->caller_thread) | |
506 | { | |
507 | CloseHandle (itimer->caller_thread); | |
508 | itimer->caller_thread = NULL; | |
509 | } | |
510 | } | |
511 | ||
512 | /* This is called at shutdown time from term_ntproc. */ | |
513 | void | |
514 | term_timers (void) | |
515 | { | |
516 | if (real_itimer.timer_thread) | |
517 | stop_timer_thread (ITIMER_REAL); | |
518 | if (prof_itimer.timer_thread) | |
519 | stop_timer_thread (ITIMER_PROF); | |
520 | ||
f0e5f225 EZ |
521 | /* We are going to delete the critical sections, so timers cannot |
522 | work after this. */ | |
523 | disable_itimers = 1; | |
524 | ||
c06c382a EZ |
525 | DeleteCriticalSection (&crit_real); |
526 | DeleteCriticalSection (&crit_prof); | |
527 | DeleteCriticalSection (&crit_sig); | |
528 | } | |
529 | ||
530 | /* This is called at initialization time from init_ntproc. */ | |
531 | void | |
532 | init_timers (void) | |
533 | { | |
5c6ce1c7 | 534 | /* GetThreadTimes is not available on all versions of Windows, so |
6c16c13e EZ |
535 | need to probe for its availability dynamically, and call it |
536 | through a pointer. */ | |
537 | s_pfn_Get_Thread_Times = NULL; /* in case dumped Emacs comes with a value */ | |
538 | if (os_subtype != OS_9X) | |
539 | s_pfn_Get_Thread_Times = | |
540 | (GetThreadTimes_Proc)GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
541 | "GetThreadTimes"); | |
542 | ||
c06c382a EZ |
543 | /* Make sure we start with zeroed out itimer structures, since |
544 | dumping may have left there traces of threads long dead. */ | |
545 | memset (&real_itimer, 0, sizeof real_itimer); | |
546 | memset (&prof_itimer, 0, sizeof prof_itimer); | |
547 | ||
548 | InitializeCriticalSection (&crit_real); | |
549 | InitializeCriticalSection (&crit_prof); | |
550 | InitializeCriticalSection (&crit_sig); | |
f0e5f225 EZ |
551 | |
552 | disable_itimers = 0; | |
c06c382a EZ |
553 | } |
554 | ||
555 | static int | |
556 | start_timer_thread (int which) | |
557 | { | |
558 | DWORD exit_code; | |
559 | struct itimer_data *itimer = | |
560 | (which == ITIMER_REAL) ? &real_itimer : &prof_itimer; | |
561 | ||
562 | if (itimer->timer_thread | |
563 | && GetExitCodeThread (itimer->timer_thread, &exit_code) | |
564 | && exit_code == STILL_ACTIVE) | |
565 | return 0; | |
566 | ||
567 | /* Start a new thread. */ | |
c06c382a EZ |
568 | itimer->terminate = 0; |
569 | itimer->type = which; | |
570 | /* Request that no more than 64KB of stack be reserved for this | |
571 | thread, to avoid reserving too much memory, which would get in | |
572 | the way of threads we start to wait for subprocesses. See also | |
573 | new_child below. */ | |
574 | itimer->timer_thread = CreateThread (NULL, 64 * 1024, timer_loop, | |
575 | (void *)itimer, 0x00010000, NULL); | |
576 | ||
577 | if (!itimer->timer_thread) | |
578 | { | |
579 | CloseHandle (itimer->caller_thread); | |
580 | itimer->caller_thread = NULL; | |
581 | errno = EAGAIN; | |
582 | return -1; | |
583 | } | |
584 | ||
585 | /* This is needed to make sure that the timer thread running for | |
586 | profiling gets CPU as soon as the Sleep call terminates. */ | |
587 | if (which == ITIMER_PROF) | |
588 | SetThreadPriority (itimer->caller_thread, THREAD_PRIORITY_TIME_CRITICAL); | |
589 | ||
3e6d6928 EZ |
590 | return 0; |
591 | } | |
592 | ||
c06c382a EZ |
593 | /* Most of the code of getitimer and setitimer (but not of their |
594 | subroutines) was shamelessly stolen from itimer.c in the DJGPP | |
595 | library, see www.delorie.com/djgpp. */ | |
596 | int | |
597 | getitimer (int which, struct itimerval *value) | |
598 | { | |
6c16c13e EZ |
599 | volatile ULONGLONG *t_expire; |
600 | volatile ULONGLONG *t_reload; | |
601 | ULONGLONG expire, reload; | |
c06c382a EZ |
602 | __int64 usecs; |
603 | CRITICAL_SECTION *crit; | |
6c16c13e | 604 | struct itimer_data *itimer; |
c06c382a | 605 | |
f0e5f225 EZ |
606 | if (disable_itimers) |
607 | return -1; | |
608 | ||
c06c382a EZ |
609 | if (!value) |
610 | { | |
611 | errno = EFAULT; | |
612 | return -1; | |
613 | } | |
614 | ||
615 | if (which != ITIMER_REAL && which != ITIMER_PROF) | |
616 | { | |
617 | errno = EINVAL; | |
618 | return -1; | |
619 | } | |
620 | ||
6c16c13e EZ |
621 | itimer = (which == ITIMER_REAL) ? &real_itimer : &prof_itimer; |
622 | ||
623 | if (!DuplicateHandle (GetCurrentProcess (), GetCurrentThread (), | |
624 | GetCurrentProcess (), &itimer->caller_thread, 0, | |
625 | FALSE, DUPLICATE_SAME_ACCESS)) | |
626 | { | |
627 | errno = ESRCH; | |
628 | return -1; | |
629 | } | |
630 | ||
631 | ticks_now = w32_get_timer_time ((which == ITIMER_REAL) | |
632 | ? NULL | |
633 | : itimer->caller_thread); | |
634 | ||
635 | t_expire = &itimer->expire; | |
636 | t_reload = &itimer->reload; | |
c06c382a EZ |
637 | crit = (which == ITIMER_REAL) ? &crit_real : &crit_prof; |
638 | ||
639 | EnterCriticalSection (crit); | |
640 | reload = *t_reload; | |
641 | expire = *t_expire; | |
642 | LeaveCriticalSection (crit); | |
643 | ||
644 | if (expire) | |
645 | expire -= ticks_now; | |
646 | ||
640bf8ad EZ |
647 | value->it_value.tv_sec = expire / TIMER_TICKS_PER_SEC; |
648 | usecs = | |
649 | (expire % TIMER_TICKS_PER_SEC) * (__int64)1000000 / TIMER_TICKS_PER_SEC; | |
c06c382a | 650 | value->it_value.tv_usec = usecs; |
640bf8ad EZ |
651 | value->it_interval.tv_sec = reload / TIMER_TICKS_PER_SEC; |
652 | usecs = | |
653 | (reload % TIMER_TICKS_PER_SEC) * (__int64)1000000 / TIMER_TICKS_PER_SEC; | |
c06c382a EZ |
654 | value->it_interval.tv_usec= usecs; |
655 | ||
656 | return 0; | |
657 | } | |
658 | ||
659 | int | |
660 | setitimer(int which, struct itimerval *value, struct itimerval *ovalue) | |
661 | { | |
6c16c13e EZ |
662 | volatile ULONGLONG *t_expire, *t_reload; |
663 | ULONGLONG expire, reload, expire_old, reload_old; | |
c06c382a EZ |
664 | __int64 usecs; |
665 | CRITICAL_SECTION *crit; | |
6c16c13e | 666 | struct itimerval tem, *ptem; |
c06c382a | 667 | |
f0e5f225 EZ |
668 | if (disable_itimers) |
669 | return -1; | |
670 | ||
c06c382a EZ |
671 | /* Posix systems expect timer values smaller than the resolution of |
672 | the system clock be rounded up to the clock resolution. First | |
673 | time we are called, measure the clock tick resolution. */ | |
674 | if (!clocks_min) | |
675 | { | |
6c16c13e | 676 | ULONGLONG t1, t2; |
c06c382a | 677 | |
6c16c13e EZ |
678 | for (t1 = w32_get_timer_time (NULL); |
679 | (t2 = w32_get_timer_time (NULL)) == t1; ) | |
c06c382a EZ |
680 | ; |
681 | clocks_min = t2 - t1; | |
682 | } | |
683 | ||
684 | if (ovalue) | |
6c16c13e | 685 | ptem = ovalue; |
c06c382a | 686 | else |
6c16c13e | 687 | ptem = &tem; |
c06c382a | 688 | |
6c16c13e EZ |
689 | if (getitimer (which, ptem)) /* also sets ticks_now */ |
690 | return -1; /* errno already set */ | |
c06c382a EZ |
691 | |
692 | t_expire = | |
693 | (which == ITIMER_REAL) ? &real_itimer.expire : &prof_itimer.expire; | |
694 | t_reload = | |
695 | (which == ITIMER_REAL) ? &real_itimer.reload : &prof_itimer.reload; | |
696 | ||
697 | crit = (which == ITIMER_REAL) ? &crit_real : &crit_prof; | |
698 | ||
699 | if (!value | |
700 | || (value->it_value.tv_sec == 0 && value->it_value.tv_usec == 0)) | |
701 | { | |
702 | EnterCriticalSection (crit); | |
703 | /* Disable the timer. */ | |
704 | *t_expire = 0; | |
705 | *t_reload = 0; | |
706 | LeaveCriticalSection (crit); | |
707 | return 0; | |
708 | } | |
709 | ||
640bf8ad | 710 | reload = value->it_interval.tv_sec * TIMER_TICKS_PER_SEC; |
c06c382a EZ |
711 | |
712 | usecs = value->it_interval.tv_usec; | |
713 | if (value->it_interval.tv_sec == 0 | |
640bf8ad | 714 | && usecs && usecs * TIMER_TICKS_PER_SEC < clocks_min * 1000000) |
c06c382a EZ |
715 | reload = clocks_min; |
716 | else | |
717 | { | |
640bf8ad | 718 | usecs *= TIMER_TICKS_PER_SEC; |
c06c382a EZ |
719 | reload += usecs / 1000000; |
720 | } | |
721 | ||
640bf8ad | 722 | expire = value->it_value.tv_sec * TIMER_TICKS_PER_SEC; |
c06c382a EZ |
723 | usecs = value->it_value.tv_usec; |
724 | if (value->it_value.tv_sec == 0 | |
640bf8ad | 725 | && usecs * TIMER_TICKS_PER_SEC < clocks_min * 1000000) |
c06c382a EZ |
726 | expire = clocks_min; |
727 | else | |
728 | { | |
640bf8ad | 729 | usecs *= TIMER_TICKS_PER_SEC; |
c06c382a EZ |
730 | expire += usecs / 1000000; |
731 | } | |
732 | ||
733 | expire += ticks_now; | |
734 | ||
735 | EnterCriticalSection (crit); | |
736 | expire_old = *t_expire; | |
737 | reload_old = *t_reload; | |
738 | if (!(expire == expire_old && reload == reload_old)) | |
739 | { | |
740 | *t_reload = reload; | |
741 | *t_expire = expire; | |
742 | } | |
743 | LeaveCriticalSection (crit); | |
744 | ||
745 | return start_timer_thread (which); | |
746 | } | |
747 | ||
748 | int | |
749 | alarm (int seconds) | |
750 | { | |
4cdfbb89 EZ |
751 | #ifdef HAVE_SETITIMER |
752 | struct itimerval new_values, old_values; | |
c06c382a EZ |
753 | |
754 | new_values.it_value.tv_sec = seconds; | |
755 | new_values.it_value.tv_usec = 0; | |
756 | new_values.it_interval.tv_sec = new_values.it_interval.tv_usec = 0; | |
757 | ||
4cdfbb89 EZ |
758 | if (setitimer (ITIMER_REAL, &new_values, &old_values) < 0) |
759 | return 0; | |
760 | return old_values.it_value.tv_sec; | |
761 | #else | |
c06c382a | 762 | return seconds; |
4cdfbb89 | 763 | #endif |
c06c382a EZ |
764 | } |
765 | ||
c519b5e1 GV |
766 | /* Defined in <process.h> which conflicts with the local copy */ |
767 | #define _P_NOWAIT 1 | |
768 | ||
769 | /* Child process management list. */ | |
770 | int child_proc_count = 0; | |
771 | child_process child_procs[ MAX_CHILDREN ]; | |
772 | child_process *dead_child = NULL; | |
773 | ||
24f981c9 | 774 | static DWORD WINAPI reader_thread (void *arg); |
c519b5e1 | 775 | |
6cdfb6e6 | 776 | /* Find an unused process slot. */ |
c519b5e1 | 777 | child_process * |
6cdfb6e6 RS |
778 | new_child (void) |
779 | { | |
780 | child_process *cp; | |
c519b5e1 | 781 | DWORD id; |
177c0ea7 | 782 | |
9d4f32e8 | 783 | for (cp = child_procs + (child_proc_count-1); cp >= child_procs; cp--) |
6cdfb6e6 | 784 | if (!CHILD_ACTIVE (cp)) |
e1dbe924 | 785 | goto Initialize; |
c519b5e1 GV |
786 | if (child_proc_count == MAX_CHILDREN) |
787 | return NULL; | |
788 | cp = &child_procs[child_proc_count++]; | |
789 | ||
e1dbe924 | 790 | Initialize: |
ed3751c8 | 791 | memset (cp, 0, sizeof (*cp)); |
c519b5e1 GV |
792 | cp->fd = -1; |
793 | cp->pid = -1; | |
794 | cp->procinfo.hProcess = NULL; | |
795 | cp->status = STATUS_READ_ERROR; | |
796 | ||
797 | /* use manual reset event so that select() will function properly */ | |
798 | cp->char_avail = CreateEvent (NULL, TRUE, FALSE, NULL); | |
799 | if (cp->char_avail) | |
800 | { | |
801 | cp->char_consumed = CreateEvent (NULL, FALSE, FALSE, NULL); | |
802 | if (cp->char_consumed) | |
803 | { | |
0d887c7d EZ |
804 | /* The 0x00010000 flag is STACK_SIZE_PARAM_IS_A_RESERVATION. |
805 | It means that the 64K stack we are requesting in the 2nd | |
806 | argument is how much memory should be reserved for the | |
807 | stack. If we don't use this flag, the memory requested | |
808 | by the 2nd argument is the amount actually _committed_, | |
809 | but Windows reserves 8MB of memory for each thread's | |
810 | stack. (The 8MB figure comes from the -stack | |
811 | command-line argument we pass to the linker when building | |
812 | Emacs, but that's because we need a large stack for | |
813 | Emacs's main thread.) Since we request 2GB of reserved | |
814 | memory at startup (see w32heap.c), which is close to the | |
815 | maximum memory available for a 32-bit process on Windows, | |
816 | the 8MB reservation for each thread causes failures in | |
817 | starting subprocesses, because we create a thread running | |
818 | reader_thread for each subprocess. As 8MB of stack is | |
819 | way too much for reader_thread, forcing Windows to | |
820 | reserve less wins the day. */ | |
821 | cp->thrd = CreateThread (NULL, 64 * 1024, reader_thread, cp, | |
822 | 0x00010000, &id); | |
c519b5e1 GV |
823 | if (cp->thrd) |
824 | return cp; | |
825 | } | |
826 | } | |
827 | delete_child (cp); | |
828 | return NULL; | |
829 | } | |
830 | ||
177c0ea7 | 831 | void |
c519b5e1 GV |
832 | delete_child (child_process *cp) |
833 | { | |
834 | int i; | |
835 | ||
836 | /* Should not be deleting a child that is still needed. */ | |
837 | for (i = 0; i < MAXDESC; i++) | |
838 | if (fd_info[i].cp == cp) | |
1088b922 | 839 | emacs_abort (); |
c519b5e1 GV |
840 | |
841 | if (!CHILD_ACTIVE (cp)) | |
842 | return; | |
843 | ||
844 | /* reap thread if necessary */ | |
845 | if (cp->thrd) | |
846 | { | |
847 | DWORD rc; | |
848 | ||
849 | if (GetExitCodeThread (cp->thrd, &rc) && rc == STILL_ACTIVE) | |
850 | { | |
851 | /* let the thread exit cleanly if possible */ | |
852 | cp->status = STATUS_READ_ERROR; | |
853 | SetEvent (cp->char_consumed); | |
a017b515 | 854 | #if 0 |
c5e87d10 | 855 | /* We used to forcibly terminate the thread here, but it |
a017b515 JR |
856 | is normally unnecessary, and in abnormal cases, the worst that |
857 | will happen is we have an extra idle thread hanging around | |
858 | waiting for the zombie process. */ | |
c519b5e1 GV |
859 | if (WaitForSingleObject (cp->thrd, 1000) != WAIT_OBJECT_0) |
860 | { | |
861 | DebPrint (("delete_child.WaitForSingleObject (thread) failed " | |
862 | "with %lu for fd %ld\n", GetLastError (), cp->fd)); | |
863 | TerminateThread (cp->thrd, 0); | |
864 | } | |
a017b515 | 865 | #endif |
c519b5e1 GV |
866 | } |
867 | CloseHandle (cp->thrd); | |
868 | cp->thrd = NULL; | |
869 | } | |
870 | if (cp->char_avail) | |
871 | { | |
872 | CloseHandle (cp->char_avail); | |
873 | cp->char_avail = NULL; | |
874 | } | |
875 | if (cp->char_consumed) | |
876 | { | |
877 | CloseHandle (cp->char_consumed); | |
878 | cp->char_consumed = NULL; | |
879 | } | |
880 | ||
881 | /* update child_proc_count (highest numbered slot in use plus one) */ | |
882 | if (cp == child_procs + child_proc_count - 1) | |
883 | { | |
884 | for (i = child_proc_count-1; i >= 0; i--) | |
885 | if (CHILD_ACTIVE (&child_procs[i])) | |
886 | { | |
887 | child_proc_count = i + 1; | |
888 | break; | |
889 | } | |
890 | } | |
891 | if (i < 0) | |
892 | child_proc_count = 0; | |
6cdfb6e6 RS |
893 | } |
894 | ||
895 | /* Find a child by pid. */ | |
896 | static child_process * | |
897 | find_child_pid (DWORD pid) | |
898 | { | |
899 | child_process *cp; | |
c519b5e1 | 900 | |
9d4f32e8 | 901 | for (cp = child_procs + (child_proc_count-1); cp >= child_procs; cp--) |
6cdfb6e6 RS |
902 | if (CHILD_ACTIVE (cp) && pid == cp->pid) |
903 | return cp; | |
904 | return NULL; | |
905 | } | |
906 | ||
6cdfb6e6 | 907 | |
c519b5e1 GV |
908 | /* Thread proc for child process and socket reader threads. Each thread |
909 | is normally blocked until woken by select() to check for input by | |
04bf5b65 | 910 | reading one char. When the read completes, char_avail is signaled |
c519b5e1 | 911 | to wake up the select emulator and the thread blocks itself again. */ |
24f981c9 | 912 | static DWORD WINAPI |
6cdfb6e6 RS |
913 | reader_thread (void *arg) |
914 | { | |
915 | child_process *cp; | |
177c0ea7 | 916 | |
6cdfb6e6 RS |
917 | /* Our identity */ |
918 | cp = (child_process *)arg; | |
177c0ea7 | 919 | |
6cdfb6e6 | 920 | /* We have to wait for the go-ahead before we can start */ |
b2fc9f3d | 921 | if (cp == NULL |
f067b8ec JB |
922 | || WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0 |
923 | || cp->fd < 0) | |
c519b5e1 GV |
924 | return 1; |
925 | ||
6cdfb6e6 RS |
926 | for (;;) |
927 | { | |
c519b5e1 GV |
928 | int rc; |
929 | ||
f9125cde KS |
930 | if (fd_info[cp->fd].flags & FILE_LISTEN) |
931 | rc = _sys_wait_accept (cp->fd); | |
932 | else | |
933 | rc = _sys_read_ahead (cp->fd); | |
c519b5e1 GV |
934 | |
935 | /* The name char_avail is a misnomer - it really just means the | |
936 | read-ahead has completed, whether successfully or not. */ | |
6cdfb6e6 RS |
937 | if (!SetEvent (cp->char_avail)) |
938 | { | |
939 | DebPrint (("reader_thread.SetEvent failed with %lu for fd %ld\n", | |
940 | GetLastError (), cp->fd)); | |
c519b5e1 GV |
941 | return 1; |
942 | } | |
943 | ||
944 | if (rc == STATUS_READ_ERROR) | |
945 | return 1; | |
177c0ea7 | 946 | |
6cdfb6e6 | 947 | /* If the read died, the child has died so let the thread die */ |
c519b5e1 | 948 | if (rc == STATUS_READ_FAILED) |
6cdfb6e6 | 949 | break; |
177c0ea7 | 950 | |
6cdfb6e6 RS |
951 | /* Wait until our input is acknowledged before reading again */ |
952 | if (WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0) | |
953 | { | |
954 | DebPrint (("reader_thread.WaitForSingleObject failed with " | |
955 | "%lu for fd %ld\n", GetLastError (), cp->fd)); | |
956 | break; | |
957 | } | |
958 | } | |
959 | return 0; | |
960 | } | |
961 | ||
b2fc9f3d GV |
962 | /* To avoid Emacs changing directory, we just record here the directory |
963 | the new process should start in. This is set just before calling | |
964 | sys_spawnve, and is not generally valid at any other time. */ | |
965 | static char * process_dir; | |
966 | ||
177c0ea7 | 967 | static BOOL |
a55a5f3c | 968 | create_child (char *exe, char *cmdline, char *env, int is_gui_app, |
c519b5e1 | 969 | int * pPid, child_process *cp) |
6cdfb6e6 | 970 | { |
6cdfb6e6 RS |
971 | STARTUPINFO start; |
972 | SECURITY_ATTRIBUTES sec_attrs; | |
42c95ffb | 973 | #if 0 |
6cdfb6e6 | 974 | SECURITY_DESCRIPTOR sec_desc; |
42c95ffb | 975 | #endif |
82e7c0a9 | 976 | DWORD flags; |
b2fc9f3d | 977 | char dir[ MAXPATHLEN ]; |
177c0ea7 | 978 | |
1088b922 | 979 | if (cp == NULL) emacs_abort (); |
177c0ea7 | 980 | |
6cdfb6e6 RS |
981 | memset (&start, 0, sizeof (start)); |
982 | start.cb = sizeof (start); | |
177c0ea7 | 983 | |
58d4e829 | 984 | #ifdef HAVE_NTGUI |
a55a5f3c | 985 | if (NILP (Vw32_start_process_show_window) && !is_gui_app) |
0ecf7d36 RS |
986 | start.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW; |
987 | else | |
988 | start.dwFlags = STARTF_USESTDHANDLES; | |
58d4e829 GV |
989 | start.wShowWindow = SW_HIDE; |
990 | ||
991 | start.hStdInput = GetStdHandle (STD_INPUT_HANDLE); | |
992 | start.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE); | |
993 | start.hStdError = GetStdHandle (STD_ERROR_HANDLE); | |
994 | #endif /* HAVE_NTGUI */ | |
995 | ||
42c95ffb | 996 | #if 0 |
6cdfb6e6 RS |
997 | /* Explicitly specify no security */ |
998 | if (!InitializeSecurityDescriptor (&sec_desc, SECURITY_DESCRIPTOR_REVISION)) | |
c519b5e1 | 999 | goto EH_Fail; |
6cdfb6e6 | 1000 | if (!SetSecurityDescriptorDacl (&sec_desc, TRUE, NULL, FALSE)) |
c519b5e1 | 1001 | goto EH_Fail; |
42c95ffb | 1002 | #endif |
6cdfb6e6 | 1003 | sec_attrs.nLength = sizeof (sec_attrs); |
42c95ffb | 1004 | sec_attrs.lpSecurityDescriptor = NULL /* &sec_desc */; |
6cdfb6e6 | 1005 | sec_attrs.bInheritHandle = FALSE; |
177c0ea7 | 1006 | |
b2fc9f3d GV |
1007 | strcpy (dir, process_dir); |
1008 | unixtodos_filename (dir); | |
82e7c0a9 AI |
1009 | |
1010 | flags = (!NILP (Vw32_start_process_share_console) | |
1011 | ? CREATE_NEW_PROCESS_GROUP | |
1012 | : CREATE_NEW_CONSOLE); | |
1013 | if (NILP (Vw32_start_process_inherit_error_mode)) | |
1014 | flags |= CREATE_DEFAULT_ERROR_MODE; | |
6cdfb6e6 | 1015 | if (!CreateProcess (exe, cmdline, &sec_attrs, NULL, TRUE, |
82e7c0a9 | 1016 | flags, env, dir, &start, &cp->procinfo)) |
c519b5e1 GV |
1017 | goto EH_Fail; |
1018 | ||
1019 | cp->pid = (int) cp->procinfo.dwProcessId; | |
1020 | ||
1021 | /* Hack for Windows 95, which assigns large (ie negative) pids */ | |
1022 | if (cp->pid < 0) | |
1023 | cp->pid = -cp->pid; | |
1024 | ||
1025 | /* pid must fit in a Lisp_Int */ | |
acba5cae | 1026 | cp->pid = cp->pid & INTMASK; |
c519b5e1 | 1027 | |
c519b5e1 | 1028 | *pPid = cp->pid; |
b2fc9f3d | 1029 | |
6cdfb6e6 | 1030 | return TRUE; |
b2fc9f3d | 1031 | |
6cdfb6e6 | 1032 | EH_Fail: |
ed3751c8 | 1033 | DebPrint (("create_child.CreateProcess failed: %ld\n", GetLastError ());); |
6cdfb6e6 RS |
1034 | return FALSE; |
1035 | } | |
1036 | ||
1037 | /* create_child doesn't know what emacs' file handle will be for waiting | |
1038 | on output from the child, so we need to make this additional call | |
1039 | to register the handle with the process | |
1040 | This way the select emulator knows how to match file handles with | |
1041 | entries in child_procs. */ | |
177c0ea7 | 1042 | void |
6cdfb6e6 RS |
1043 | register_child (int pid, int fd) |
1044 | { | |
1045 | child_process *cp; | |
177c0ea7 | 1046 | |
6cdfb6e6 RS |
1047 | cp = find_child_pid (pid); |
1048 | if (cp == NULL) | |
1049 | { | |
1050 | DebPrint (("register_child unable to find pid %lu\n", pid)); | |
1051 | return; | |
1052 | } | |
177c0ea7 | 1053 | |
6cdfb6e6 RS |
1054 | #ifdef FULL_DEBUG |
1055 | DebPrint (("register_child registered fd %d with pid %lu\n", fd, pid)); | |
1056 | #endif | |
177c0ea7 | 1057 | |
6cdfb6e6 | 1058 | cp->fd = fd; |
6cdfb6e6 | 1059 | |
c519b5e1 GV |
1060 | /* thread is initially blocked until select is called; set status so |
1061 | that select will release thread */ | |
1062 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
1063 | ||
1064 | /* attach child_process to fd_info */ | |
1065 | if (fd_info[fd].cp != NULL) | |
6cdfb6e6 | 1066 | { |
c519b5e1 | 1067 | DebPrint (("register_child: fd_info[%d] apparently in use!\n", fd)); |
1088b922 | 1068 | emacs_abort (); |
6cdfb6e6 | 1069 | } |
c519b5e1 GV |
1070 | |
1071 | fd_info[fd].cp = cp; | |
6cdfb6e6 RS |
1072 | } |
1073 | ||
1074 | /* When a process dies its pipe will break so the reader thread will | |
1075 | signal failure to the select emulator. | |
1076 | The select emulator then calls this routine to clean up. | |
1077 | Since the thread signaled failure we can assume it is exiting. */ | |
177c0ea7 | 1078 | static void |
c519b5e1 | 1079 | reap_subprocess (child_process *cp) |
6cdfb6e6 | 1080 | { |
c519b5e1 | 1081 | if (cp->procinfo.hProcess) |
6cdfb6e6 | 1082 | { |
c519b5e1 | 1083 | /* Reap the process */ |
b2fc9f3d GV |
1084 | #ifdef FULL_DEBUG |
1085 | /* Process should have already died before we are called. */ | |
1086 | if (WaitForSingleObject (cp->procinfo.hProcess, 0) != WAIT_OBJECT_0) | |
1087 | DebPrint (("reap_subprocess: child fpr fd %d has not died yet!", cp->fd)); | |
1088 | #endif | |
c519b5e1 GV |
1089 | CloseHandle (cp->procinfo.hProcess); |
1090 | cp->procinfo.hProcess = NULL; | |
1091 | CloseHandle (cp->procinfo.hThread); | |
1092 | cp->procinfo.hThread = NULL; | |
6cdfb6e6 | 1093 | } |
c519b5e1 GV |
1094 | |
1095 | /* For asynchronous children, the child_proc resources will be freed | |
1096 | when the last pipe read descriptor is closed; for synchronous | |
1097 | children, we must explicitly free the resources now because | |
1098 | register_child has not been called. */ | |
1099 | if (cp->fd == -1) | |
1100 | delete_child (cp); | |
6cdfb6e6 RS |
1101 | } |
1102 | ||
1103 | /* Wait for any of our existing child processes to die | |
1104 | When it does, close its handle | |
1105 | Return the pid and fill in the status if non-NULL. */ | |
22759c72 | 1106 | |
177c0ea7 | 1107 | int |
c519b5e1 | 1108 | sys_wait (int *status) |
6cdfb6e6 RS |
1109 | { |
1110 | DWORD active, retval; | |
1111 | int nh; | |
c519b5e1 | 1112 | int pid; |
6cdfb6e6 RS |
1113 | child_process *cp, *cps[MAX_CHILDREN]; |
1114 | HANDLE wait_hnd[MAX_CHILDREN]; | |
177c0ea7 | 1115 | |
6cdfb6e6 RS |
1116 | nh = 0; |
1117 | if (dead_child != NULL) | |
1118 | { | |
1119 | /* We want to wait for a specific child */ | |
c519b5e1 | 1120 | wait_hnd[nh] = dead_child->procinfo.hProcess; |
6cdfb6e6 | 1121 | cps[nh] = dead_child; |
1088b922 | 1122 | if (!wait_hnd[nh]) emacs_abort (); |
6cdfb6e6 | 1123 | nh++; |
b2fc9f3d GV |
1124 | active = 0; |
1125 | goto get_result; | |
6cdfb6e6 RS |
1126 | } |
1127 | else | |
1128 | { | |
9d4f32e8 | 1129 | for (cp = child_procs + (child_proc_count-1); cp >= child_procs; cp--) |
c519b5e1 | 1130 | /* some child_procs might be sockets; ignore them */ |
3ac04ed0 CY |
1131 | if (CHILD_ACTIVE (cp) && cp->procinfo.hProcess |
1132 | && (cp->fd < 0 || (fd_info[cp->fd].flags & FILE_AT_EOF) != 0)) | |
6cdfb6e6 | 1133 | { |
c519b5e1 | 1134 | wait_hnd[nh] = cp->procinfo.hProcess; |
6cdfb6e6 RS |
1135 | cps[nh] = cp; |
1136 | nh++; | |
1137 | } | |
1138 | } | |
177c0ea7 | 1139 | |
6cdfb6e6 RS |
1140 | if (nh == 0) |
1141 | { | |
1142 | /* Nothing to wait on, so fail */ | |
1143 | errno = ECHILD; | |
1144 | return -1; | |
1145 | } | |
b2fc9f3d GV |
1146 | |
1147 | do | |
1148 | { | |
1149 | /* Check for quit about once a second. */ | |
1150 | QUIT; | |
1151 | active = WaitForMultipleObjects (nh, wait_hnd, FALSE, 1000); | |
1152 | } while (active == WAIT_TIMEOUT); | |
1153 | ||
6cdfb6e6 RS |
1154 | if (active == WAIT_FAILED) |
1155 | { | |
1156 | errno = EBADF; | |
1157 | return -1; | |
1158 | } | |
b2fc9f3d GV |
1159 | else if (active >= WAIT_OBJECT_0 |
1160 | && active < WAIT_OBJECT_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
1161 | { |
1162 | active -= WAIT_OBJECT_0; | |
1163 | } | |
b2fc9f3d GV |
1164 | else if (active >= WAIT_ABANDONED_0 |
1165 | && active < WAIT_ABANDONED_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
1166 | { |
1167 | active -= WAIT_ABANDONED_0; | |
1168 | } | |
b2fc9f3d | 1169 | else |
1088b922 | 1170 | emacs_abort (); |
b2fc9f3d GV |
1171 | |
1172 | get_result: | |
6cdfb6e6 RS |
1173 | if (!GetExitCodeProcess (wait_hnd[active], &retval)) |
1174 | { | |
1175 | DebPrint (("Wait.GetExitCodeProcess failed with %lu\n", | |
1176 | GetLastError ())); | |
1177 | retval = 1; | |
1178 | } | |
1179 | if (retval == STILL_ACTIVE) | |
1180 | { | |
1181 | /* Should never happen */ | |
1182 | DebPrint (("Wait.WaitForMultipleObjects returned an active process\n")); | |
1183 | errno = EINVAL; | |
1184 | return -1; | |
1185 | } | |
bc69349b RS |
1186 | |
1187 | /* Massage the exit code from the process to match the format expected | |
8e6208c5 | 1188 | by the WIFSTOPPED et al macros in syswait.h. Only WIFSIGNALED and |
bc69349b RS |
1189 | WIFEXITED are supported; WIFSTOPPED doesn't make sense under NT. */ |
1190 | ||
1191 | if (retval == STATUS_CONTROL_C_EXIT) | |
1192 | retval = SIGINT; | |
1193 | else | |
1194 | retval <<= 8; | |
177c0ea7 | 1195 | |
6cdfb6e6 | 1196 | cp = cps[active]; |
c519b5e1 GV |
1197 | pid = cp->pid; |
1198 | #ifdef FULL_DEBUG | |
1199 | DebPrint (("Wait signaled with process pid %d\n", cp->pid)); | |
1200 | #endif | |
22759c72 | 1201 | |
6cdfb6e6 RS |
1202 | if (status) |
1203 | { | |
22759c72 KH |
1204 | *status = retval; |
1205 | } | |
1206 | else if (synch_process_alive) | |
1207 | { | |
1208 | synch_process_alive = 0; | |
22759c72 | 1209 | |
3d7eead0 GV |
1210 | /* Report the status of the synchronous process. */ |
1211 | if (WIFEXITED (retval)) | |
13294f95 | 1212 | synch_process_retcode = WEXITSTATUS (retval); |
3d7eead0 GV |
1213 | else if (WIFSIGNALED (retval)) |
1214 | { | |
1215 | int code = WTERMSIG (retval); | |
d8ab37a8 | 1216 | const char *signame; |
68c45bf0 | 1217 | |
ca9c0567 | 1218 | synchronize_system_messages_locale (); |
68c45bf0 PE |
1219 | signame = strsignal (code); |
1220 | ||
3d7eead0 GV |
1221 | if (signame == 0) |
1222 | signame = "unknown"; | |
1223 | ||
1224 | synch_process_death = signame; | |
1225 | } | |
c519b5e1 GV |
1226 | |
1227 | reap_subprocess (cp); | |
6cdfb6e6 | 1228 | } |
b2fc9f3d GV |
1229 | |
1230 | reap_subprocess (cp); | |
177c0ea7 | 1231 | |
c519b5e1 | 1232 | return pid; |
6cdfb6e6 RS |
1233 | } |
1234 | ||
75be5258 EZ |
1235 | /* Old versions of w32api headers don't have separate 32-bit and |
1236 | 64-bit defines, but the one they have matches the 32-bit variety. */ | |
1237 | #ifndef IMAGE_NT_OPTIONAL_HDR32_MAGIC | |
1238 | # define IMAGE_NT_OPTIONAL_HDR32_MAGIC IMAGE_NT_OPTIONAL_HDR_MAGIC | |
1239 | # define IMAGE_OPTIONAL_HEADER32 IMAGE_OPTIONAL_HEADER | |
1240 | #endif | |
1241 | ||
24f981c9 | 1242 | static void |
b56ceb92 JB |
1243 | w32_executable_type (char * filename, |
1244 | int * is_dos_app, | |
1245 | int * is_cygnus_app, | |
1246 | int * is_gui_app) | |
817abdf6 | 1247 | { |
b2fc9f3d GV |
1248 | file_data executable; |
1249 | char * p; | |
177c0ea7 | 1250 | |
b2fc9f3d GV |
1251 | /* Default values in case we can't tell for sure. */ |
1252 | *is_dos_app = FALSE; | |
1253 | *is_cygnus_app = FALSE; | |
a55a5f3c | 1254 | *is_gui_app = FALSE; |
b2fc9f3d GV |
1255 | |
1256 | if (!open_input_file (&executable, filename)) | |
1257 | return; | |
817abdf6 | 1258 | |
b2fc9f3d | 1259 | p = strrchr (filename, '.'); |
177c0ea7 | 1260 | |
b2fc9f3d | 1261 | /* We can only identify DOS .com programs from the extension. */ |
05131107 | 1262 | if (p && xstrcasecmp (p, ".com") == 0) |
b2fc9f3d | 1263 | *is_dos_app = TRUE; |
05131107 JR |
1264 | else if (p && (xstrcasecmp (p, ".bat") == 0 |
1265 | || xstrcasecmp (p, ".cmd") == 0)) | |
b2fc9f3d GV |
1266 | { |
1267 | /* A DOS shell script - it appears that CreateProcess is happy to | |
1268 | accept this (somewhat surprisingly); presumably it looks at | |
1269 | COMSPEC to determine what executable to actually invoke. | |
1270 | Therefore, we have to do the same here as well. */ | |
1271 | /* Actually, I think it uses the program association for that | |
1272 | extension, which is defined in the registry. */ | |
1273 | p = egetenv ("COMSPEC"); | |
1274 | if (p) | |
a55a5f3c | 1275 | w32_executable_type (p, is_dos_app, is_cygnus_app, is_gui_app); |
b2fc9f3d GV |
1276 | } |
1277 | else | |
817abdf6 | 1278 | { |
b2fc9f3d GV |
1279 | /* Look for DOS .exe signature - if found, we must also check that |
1280 | it isn't really a 16- or 32-bit Windows exe, since both formats | |
1281 | start with a DOS program stub. Note that 16-bit Windows | |
1282 | executables use the OS/2 1.x format. */ | |
817abdf6 | 1283 | |
b2fc9f3d GV |
1284 | IMAGE_DOS_HEADER * dos_header; |
1285 | IMAGE_NT_HEADERS * nt_header; | |
1286 | ||
1287 | dos_header = (PIMAGE_DOS_HEADER) executable.file_base; | |
1288 | if (dos_header->e_magic != IMAGE_DOS_SIGNATURE) | |
1289 | goto unwind; | |
1290 | ||
62aba0d4 | 1291 | nt_header = (PIMAGE_NT_HEADERS) ((unsigned char *) dos_header + dos_header->e_lfanew); |
b2fc9f3d | 1292 | |
177c0ea7 | 1293 | if ((char *) nt_header > (char *) dos_header + executable.size) |
817abdf6 | 1294 | { |
b2fc9f3d GV |
1295 | /* Some dos headers (pkunzip) have bogus e_lfanew fields. */ |
1296 | *is_dos_app = TRUE; | |
177c0ea7 | 1297 | } |
b2fc9f3d GV |
1298 | else if (nt_header->Signature != IMAGE_NT_SIGNATURE |
1299 | && LOWORD (nt_header->Signature) != IMAGE_OS2_SIGNATURE) | |
1300 | { | |
1301 | *is_dos_app = TRUE; | |
1302 | } | |
1303 | else if (nt_header->Signature == IMAGE_NT_SIGNATURE) | |
1304 | { | |
2b6e2f4d JR |
1305 | IMAGE_DATA_DIRECTORY *data_dir = NULL; |
1306 | if (nt_header->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC) | |
1307 | { | |
1308 | /* Ensure we are using the 32 bit structure. */ | |
1309 | IMAGE_OPTIONAL_HEADER32 *opt | |
1310 | = (IMAGE_OPTIONAL_HEADER32*) &(nt_header->OptionalHeader); | |
1311 | data_dir = opt->DataDirectory; | |
1312 | *is_gui_app = (opt->Subsystem == IMAGE_SUBSYSTEM_WINDOWS_GUI); | |
1313 | } | |
1314 | /* MingW 3.12 has the required 64 bit structs, but in case older | |
1315 | versions don't, only check 64 bit exes if we know how. */ | |
1316 | #ifdef IMAGE_NT_OPTIONAL_HDR64_MAGIC | |
1317 | else if (nt_header->OptionalHeader.Magic | |
1318 | == IMAGE_NT_OPTIONAL_HDR64_MAGIC) | |
1319 | { | |
1320 | IMAGE_OPTIONAL_HEADER64 *opt | |
1321 | = (IMAGE_OPTIONAL_HEADER64*) &(nt_header->OptionalHeader); | |
1322 | data_dir = opt->DataDirectory; | |
1323 | *is_gui_app = (opt->Subsystem == IMAGE_SUBSYSTEM_WINDOWS_GUI); | |
1324 | } | |
1325 | #endif | |
1326 | if (data_dir) | |
1327 | { | |
1328 | /* Look for cygwin.dll in DLL import list. */ | |
1329 | IMAGE_DATA_DIRECTORY import_dir = | |
1330 | data_dir[IMAGE_DIRECTORY_ENTRY_IMPORT]; | |
1331 | IMAGE_IMPORT_DESCRIPTOR * imports; | |
1332 | IMAGE_SECTION_HEADER * section; | |
1333 | ||
1334 | section = rva_to_section (import_dir.VirtualAddress, nt_header); | |
1335 | imports = RVA_TO_PTR (import_dir.VirtualAddress, section, | |
1336 | executable); | |
1337 | ||
1338 | for ( ; imports->Name; imports++) | |
1339 | { | |
1340 | char * dllname = RVA_TO_PTR (imports->Name, section, | |
1341 | executable); | |
35f36d65 | 1342 | |
2b6e2f4d JR |
1343 | /* The exact name of the cygwin dll has changed with |
1344 | various releases, but hopefully this will be reasonably | |
1345 | future proof. */ | |
1346 | if (strncmp (dllname, "cygwin", 6) == 0) | |
1347 | { | |
1348 | *is_cygnus_app = TRUE; | |
1349 | break; | |
1350 | } | |
1351 | } | |
1352 | } | |
b2fc9f3d | 1353 | } |
817abdf6 | 1354 | } |
177c0ea7 | 1355 | |
b2fc9f3d GV |
1356 | unwind: |
1357 | close_file_data (&executable); | |
817abdf6 KH |
1358 | } |
1359 | ||
24f981c9 | 1360 | static int |
42c95ffb | 1361 | compare_env (const void *strp1, const void *strp2) |
d9709fde | 1362 | { |
42c95ffb | 1363 | const char *str1 = *(const char **)strp1, *str2 = *(const char **)strp2; |
d9709fde GV |
1364 | |
1365 | while (*str1 && *str2 && *str1 != '=' && *str2 != '=') | |
1366 | { | |
11c22fff AI |
1367 | /* Sort order in command.com/cmd.exe is based on uppercasing |
1368 | names, so do the same here. */ | |
1369 | if (toupper (*str1) > toupper (*str2)) | |
d9709fde | 1370 | return 1; |
11c22fff | 1371 | else if (toupper (*str1) < toupper (*str2)) |
d9709fde GV |
1372 | return -1; |
1373 | str1++, str2++; | |
1374 | } | |
1375 | ||
1376 | if (*str1 == '=' && *str2 == '=') | |
1377 | return 0; | |
1378 | else if (*str1 == '=') | |
1379 | return -1; | |
1380 | else | |
1381 | return 1; | |
1382 | } | |
1383 | ||
24f981c9 | 1384 | static void |
d9709fde GV |
1385 | merge_and_sort_env (char **envp1, char **envp2, char **new_envp) |
1386 | { | |
1387 | char **optr, **nptr; | |
1388 | int num; | |
1389 | ||
1390 | nptr = new_envp; | |
1391 | optr = envp1; | |
1392 | while (*optr) | |
1393 | *nptr++ = *optr++; | |
1394 | num = optr - envp1; | |
1395 | ||
1396 | optr = envp2; | |
1397 | while (*optr) | |
1398 | *nptr++ = *optr++; | |
1399 | num += optr - envp2; | |
1400 | ||
1401 | qsort (new_envp, num, sizeof (char *), compare_env); | |
1402 | ||
1403 | *nptr = NULL; | |
1404 | } | |
6cdfb6e6 RS |
1405 | |
1406 | /* When a new child process is created we need to register it in our list, | |
1407 | so intercept spawn requests. */ | |
177c0ea7 | 1408 | int |
c519b5e1 | 1409 | sys_spawnve (int mode, char *cmdname, char **argv, char **envp) |
6cdfb6e6 | 1410 | { |
0a4de642 | 1411 | Lisp_Object program, full; |
6cdfb6e6 | 1412 | char *cmdline, *env, *parg, **targ; |
d9709fde | 1413 | int arglen, numenv; |
c519b5e1 GV |
1414 | int pid; |
1415 | child_process *cp; | |
a55a5f3c | 1416 | int is_dos_app, is_cygnus_app, is_gui_app; |
b2fc9f3d GV |
1417 | int do_quoting = 0; |
1418 | char escape_char; | |
d9709fde GV |
1419 | /* We pass our process ID to our children by setting up an environment |
1420 | variable in their environment. */ | |
1421 | char ppid_env_var_buffer[64]; | |
1422 | char *extra_env[] = {ppid_env_var_buffer, NULL}; | |
0a7a6051 JR |
1423 | /* These are the characters that cause an argument to need quoting. |
1424 | Arguments with whitespace characters need quoting to prevent the | |
1425 | argument being split into two or more. Arguments with wildcards | |
1426 | are also quoted, for consistency with posix platforms, where wildcards | |
1427 | are not expanded if we run the program directly without a shell. | |
1428 | Some extra whitespace characters need quoting in Cygwin programs, | |
1429 | so this list is conditionally modified below. */ | |
1430 | char *sepchars = " \t*?"; | |
d9709fde | 1431 | |
c519b5e1 GV |
1432 | /* We don't care about the other modes */ |
1433 | if (mode != _P_NOWAIT) | |
1434 | { | |
1435 | errno = EINVAL; | |
1436 | return -1; | |
1437 | } | |
0a4de642 RS |
1438 | |
1439 | /* Handle executable names without an executable suffix. */ | |
1130ecfc | 1440 | program = build_string (cmdname); |
0a4de642 RS |
1441 | if (NILP (Ffile_executable_p (program))) |
1442 | { | |
1443 | struct gcpro gcpro1; | |
177c0ea7 | 1444 | |
0a4de642 RS |
1445 | full = Qnil; |
1446 | GCPRO1 (program); | |
44c7a526 | 1447 | openp (Vexec_path, program, Vexec_suffixes, &full, make_number (X_OK)); |
0a4de642 RS |
1448 | UNGCPRO; |
1449 | if (NILP (full)) | |
1450 | { | |
1451 | errno = EINVAL; | |
1452 | return -1; | |
1453 | } | |
b2fc9f3d | 1454 | program = full; |
0a4de642 RS |
1455 | } |
1456 | ||
b2fc9f3d | 1457 | /* make sure argv[0] and cmdname are both in DOS format */ |
d5db4077 | 1458 | cmdname = SDATA (program); |
c519b5e1 GV |
1459 | unixtodos_filename (cmdname); |
1460 | argv[0] = cmdname; | |
817abdf6 | 1461 | |
b46a6a83 | 1462 | /* Determine whether program is a 16-bit DOS executable, or a 32-bit Windows |
b2fc9f3d GV |
1463 | executable that is implicitly linked to the Cygnus dll (implying it |
1464 | was compiled with the Cygnus GNU toolchain and hence relies on | |
1465 | cygwin.dll to parse the command line - we use this to decide how to | |
a55a5f3c AI |
1466 | escape quote chars in command line args that must be quoted). |
1467 | ||
1468 | Also determine whether it is a GUI app, so that we don't hide its | |
1469 | initial window unless specifically requested. */ | |
1470 | w32_executable_type (cmdname, &is_dos_app, &is_cygnus_app, &is_gui_app); | |
b2fc9f3d GV |
1471 | |
1472 | /* On Windows 95, if cmdname is a DOS app, we invoke a helper | |
1473 | application to start it by specifying the helper app as cmdname, | |
1474 | while leaving the real app name as argv[0]. */ | |
1475 | if (is_dos_app) | |
817abdf6 | 1476 | { |
b2fc9f3d GV |
1477 | cmdname = alloca (MAXPATHLEN); |
1478 | if (egetenv ("CMDPROXY")) | |
1479 | strcpy (cmdname, egetenv ("CMDPROXY")); | |
1480 | else | |
1481 | { | |
d5db4077 | 1482 | strcpy (cmdname, SDATA (Vinvocation_directory)); |
b2fc9f3d GV |
1483 | strcat (cmdname, "cmdproxy.exe"); |
1484 | } | |
1485 | unixtodos_filename (cmdname); | |
817abdf6 | 1486 | } |
177c0ea7 | 1487 | |
6cdfb6e6 RS |
1488 | /* we have to do some conjuring here to put argv and envp into the |
1489 | form CreateProcess wants... argv needs to be a space separated/null | |
1490 | terminated list of parameters, and envp is a null | |
1491 | separated/double-null terminated list of parameters. | |
c519b5e1 | 1492 | |
b2fc9f3d GV |
1493 | Additionally, zero-length args and args containing whitespace or |
1494 | quote chars need to be wrapped in double quotes - for this to work, | |
1495 | embedded quotes need to be escaped as well. The aim is to ensure | |
1496 | the child process reconstructs the argv array we start with | |
1497 | exactly, so we treat quotes at the beginning and end of arguments | |
1498 | as embedded quotes. | |
1499 | ||
ef79fbba | 1500 | The w32 GNU-based library from Cygnus doubles quotes to escape |
b2fc9f3d | 1501 | them, while MSVC uses backslash for escaping. (Actually the MSVC |
e1dbe924 | 1502 | startup code does attempt to recognize doubled quotes and accept |
b2fc9f3d GV |
1503 | them, but gets it wrong and ends up requiring three quotes to get a |
1504 | single embedded quote!) So by default we decide whether to use | |
1505 | quote or backslash as the escape character based on whether the | |
1506 | binary is apparently a Cygnus compiled app. | |
1507 | ||
1508 | Note that using backslash to escape embedded quotes requires | |
1509 | additional special handling if an embedded quote is already | |
97610156 | 1510 | preceded by backslash, or if an arg requiring quoting ends with |
b2fc9f3d GV |
1511 | backslash. In such cases, the run of escape characters needs to be |
1512 | doubled. For consistency, we apply this special handling as long | |
1513 | as the escape character is not quote. | |
1514 | ||
1515 | Since we have no idea how large argv and envp are likely to be we | |
1516 | figure out list lengths on the fly and allocate them. */ | |
1517 | ||
1518 | if (!NILP (Vw32_quote_process_args)) | |
1519 | { | |
1520 | do_quoting = 1; | |
1521 | /* Override escape char by binding w32-quote-process-args to | |
1522 | desired character, or use t for auto-selection. */ | |
1523 | if (INTEGERP (Vw32_quote_process_args)) | |
1524 | escape_char = XINT (Vw32_quote_process_args); | |
1525 | else | |
1526 | escape_char = is_cygnus_app ? '"' : '\\'; | |
1527 | } | |
177c0ea7 | 1528 | |
9d4f32e8 | 1529 | /* Cygwin apps needs quoting a bit more often. */ |
dbb70029 GM |
1530 | if (escape_char == '"') |
1531 | sepchars = "\r\n\t\f '"; | |
1532 | ||
6cdfb6e6 RS |
1533 | /* do argv... */ |
1534 | arglen = 0; | |
1535 | targ = argv; | |
1536 | while (*targ) | |
1537 | { | |
c519b5e1 | 1538 | char * p = *targ; |
b2fc9f3d GV |
1539 | int need_quotes = 0; |
1540 | int escape_char_run = 0; | |
c519b5e1 GV |
1541 | |
1542 | if (*p == 0) | |
b2fc9f3d GV |
1543 | need_quotes = 1; |
1544 | for ( ; *p; p++) | |
1545 | { | |
dbb70029 GM |
1546 | if (escape_char == '"' && *p == '\\') |
1547 | /* If it's a Cygwin app, \ needs to be escaped. */ | |
1548 | arglen++; | |
1549 | else if (*p == '"') | |
b2fc9f3d GV |
1550 | { |
1551 | /* allow for embedded quotes to be escaped */ | |
1552 | arglen++; | |
1553 | need_quotes = 1; | |
1554 | /* handle the case where the embedded quote is already escaped */ | |
1555 | if (escape_char_run > 0) | |
1556 | { | |
1557 | /* To preserve the arg exactly, we need to double the | |
1558 | preceding escape characters (plus adding one to | |
1559 | escape the quote character itself). */ | |
1560 | arglen += escape_char_run; | |
1561 | } | |
1562 | } | |
dbb70029 | 1563 | else if (strchr (sepchars, *p) != NULL) |
b2fc9f3d GV |
1564 | { |
1565 | need_quotes = 1; | |
1566 | } | |
1567 | ||
1568 | if (*p == escape_char && escape_char != '"') | |
1569 | escape_char_run++; | |
1570 | else | |
1571 | escape_char_run = 0; | |
1572 | } | |
1573 | if (need_quotes) | |
1574 | { | |
1575 | arglen += 2; | |
1576 | /* handle the case where the arg ends with an escape char - we | |
1577 | must not let the enclosing quote be escaped. */ | |
1578 | if (escape_char_run > 0) | |
1579 | arglen += escape_char_run; | |
1580 | } | |
6cdfb6e6 RS |
1581 | arglen += strlen (*targ++) + 1; |
1582 | } | |
c519b5e1 | 1583 | cmdline = alloca (arglen); |
6cdfb6e6 RS |
1584 | targ = argv; |
1585 | parg = cmdline; | |
1586 | while (*targ) | |
1587 | { | |
c519b5e1 | 1588 | char * p = *targ; |
b2fc9f3d | 1589 | int need_quotes = 0; |
c519b5e1 GV |
1590 | |
1591 | if (*p == 0) | |
b2fc9f3d | 1592 | need_quotes = 1; |
93fdf2f8 | 1593 | |
b2fc9f3d | 1594 | if (do_quoting) |
93fdf2f8 | 1595 | { |
93fdf2f8 | 1596 | for ( ; *p; p++) |
dbb70029 | 1597 | if ((strchr (sepchars, *p) != NULL) || *p == '"') |
b2fc9f3d | 1598 | need_quotes = 1; |
93fdf2f8 | 1599 | } |
b2fc9f3d | 1600 | if (need_quotes) |
c519b5e1 | 1601 | { |
b2fc9f3d | 1602 | int escape_char_run = 0; |
c519b5e1 GV |
1603 | char * first; |
1604 | char * last; | |
1605 | ||
1606 | p = *targ; | |
1607 | first = p; | |
1608 | last = p + strlen (p) - 1; | |
1609 | *parg++ = '"'; | |
b2fc9f3d GV |
1610 | #if 0 |
1611 | /* This version does not escape quotes if they occur at the | |
1612 | beginning or end of the arg - this could lead to incorrect | |
fffa137c | 1613 | behavior when the arg itself represents a command line |
b2fc9f3d GV |
1614 | containing quoted args. I believe this was originally done |
1615 | as a hack to make some things work, before | |
1616 | `w32-quote-process-args' was added. */ | |
c519b5e1 GV |
1617 | while (*p) |
1618 | { | |
1619 | if (*p == '"' && p > first && p < last) | |
b2fc9f3d | 1620 | *parg++ = escape_char; /* escape embedded quotes */ |
c519b5e1 GV |
1621 | *parg++ = *p++; |
1622 | } | |
b2fc9f3d GV |
1623 | #else |
1624 | for ( ; *p; p++) | |
1625 | { | |
1626 | if (*p == '"') | |
1627 | { | |
1628 | /* double preceding escape chars if any */ | |
1629 | while (escape_char_run > 0) | |
1630 | { | |
1631 | *parg++ = escape_char; | |
1632 | escape_char_run--; | |
1633 | } | |
1634 | /* escape all quote chars, even at beginning or end */ | |
1635 | *parg++ = escape_char; | |
1636 | } | |
dbb70029 GM |
1637 | else if (escape_char == '"' && *p == '\\') |
1638 | *parg++ = '\\'; | |
b2fc9f3d GV |
1639 | *parg++ = *p; |
1640 | ||
1641 | if (*p == escape_char && escape_char != '"') | |
1642 | escape_char_run++; | |
1643 | else | |
1644 | escape_char_run = 0; | |
1645 | } | |
1646 | /* double escape chars before enclosing quote */ | |
1647 | while (escape_char_run > 0) | |
1648 | { | |
1649 | *parg++ = escape_char; | |
1650 | escape_char_run--; | |
1651 | } | |
1652 | #endif | |
c519b5e1 GV |
1653 | *parg++ = '"'; |
1654 | } | |
1655 | else | |
1656 | { | |
1657 | strcpy (parg, *targ); | |
1658 | parg += strlen (*targ); | |
1659 | } | |
6cdfb6e6 | 1660 | *parg++ = ' '; |
c519b5e1 | 1661 | targ++; |
6cdfb6e6 RS |
1662 | } |
1663 | *--parg = '\0'; | |
177c0ea7 | 1664 | |
6cdfb6e6 RS |
1665 | /* and envp... */ |
1666 | arglen = 1; | |
1667 | targ = envp; | |
d9709fde | 1668 | numenv = 1; /* for end null */ |
6cdfb6e6 RS |
1669 | while (*targ) |
1670 | { | |
1671 | arglen += strlen (*targ++) + 1; | |
d9709fde | 1672 | numenv++; |
6cdfb6e6 | 1673 | } |
d9709fde | 1674 | /* extra env vars... */ |
2f246cd3 | 1675 | sprintf (ppid_env_var_buffer, "EM_PARENT_PROCESS_ID=%lu", |
6cdfb6e6 RS |
1676 | GetCurrentProcessId ()); |
1677 | arglen += strlen (ppid_env_var_buffer) + 1; | |
d9709fde | 1678 | numenv++; |
6cdfb6e6 | 1679 | |
d9709fde GV |
1680 | /* merge env passed in and extra env into one, and sort it. */ |
1681 | targ = (char **) alloca (numenv * sizeof (char *)); | |
1682 | merge_and_sort_env (envp, extra_env, targ); | |
1683 | ||
1684 | /* concatenate env entries. */ | |
c519b5e1 | 1685 | env = alloca (arglen); |
6cdfb6e6 RS |
1686 | parg = env; |
1687 | while (*targ) | |
1688 | { | |
1689 | strcpy (parg, *targ); | |
1690 | parg += strlen (*targ++); | |
1691 | *parg++ = '\0'; | |
1692 | } | |
6cdfb6e6 RS |
1693 | *parg++ = '\0'; |
1694 | *parg = '\0'; | |
c519b5e1 GV |
1695 | |
1696 | cp = new_child (); | |
1697 | if (cp == NULL) | |
1698 | { | |
1699 | errno = EAGAIN; | |
1700 | return -1; | |
1701 | } | |
177c0ea7 | 1702 | |
6cdfb6e6 | 1703 | /* Now create the process. */ |
a55a5f3c | 1704 | if (!create_child (cmdname, cmdline, env, is_gui_app, &pid, cp)) |
6cdfb6e6 | 1705 | { |
c519b5e1 | 1706 | delete_child (cp); |
6cdfb6e6 | 1707 | errno = ENOEXEC; |
c519b5e1 | 1708 | return -1; |
6cdfb6e6 | 1709 | } |
177c0ea7 | 1710 | |
c519b5e1 | 1711 | return pid; |
6cdfb6e6 RS |
1712 | } |
1713 | ||
1714 | /* Emulate the select call | |
1715 | Wait for available input on any of the given rfds, or timeout if | |
1716 | a timeout is given and no input is detected | |
b2fc9f3d GV |
1717 | wfds and efds are not supported and must be NULL. |
1718 | ||
1719 | For simplicity, we detect the death of child processes here and | |
1720 | synchronously call the SIGCHLD handler. Since it is possible for | |
1721 | children to be created without a corresponding pipe handle from which | |
1722 | to read output, we wait separately on the process handles as well as | |
1723 | the char_avail events for each process pipe. We only call | |
86143765 RS |
1724 | wait/reap_process when the process actually terminates. |
1725 | ||
1726 | To reduce the number of places in which Emacs can be hung such that | |
1727 | C-g is not able to interrupt it, we always wait on interrupt_handle | |
04bf5b65 | 1728 | (which is signaled by the input thread when C-g is detected). If we |
86143765 RS |
1729 | detect that we were woken up by C-g, we return -1 with errno set to |
1730 | EINTR as on Unix. */ | |
6cdfb6e6 | 1731 | |
7684e57b | 1732 | /* From w32console.c */ |
6cdfb6e6 | 1733 | extern HANDLE keyboard_handle; |
86143765 RS |
1734 | |
1735 | /* From w32xfns.c */ | |
1736 | extern HANDLE interrupt_handle; | |
1737 | ||
6cdfb6e6 RS |
1738 | /* From process.c */ |
1739 | extern int proc_buffered_char[]; | |
1740 | ||
177c0ea7 | 1741 | int |
22759c72 | 1742 | sys_select (int nfds, SELECT_TYPE *rfds, SELECT_TYPE *wfds, SELECT_TYPE *efds, |
c9240d7a | 1743 | EMACS_TIME *timeout, void *ignored) |
6cdfb6e6 RS |
1744 | { |
1745 | SELECT_TYPE orfds; | |
b2fc9f3d GV |
1746 | DWORD timeout_ms, start_time; |
1747 | int i, nh, nc, nr; | |
6cdfb6e6 | 1748 | DWORD active; |
b2fc9f3d GV |
1749 | child_process *cp, *cps[MAX_CHILDREN]; |
1750 | HANDLE wait_hnd[MAXDESC + MAX_CHILDREN]; | |
c519b5e1 | 1751 | int fdindex[MAXDESC]; /* mapping from wait handles back to descriptors */ |
177c0ea7 | 1752 | |
388cdec0 EZ |
1753 | timeout_ms = |
1754 | timeout ? (timeout->tv_sec * 1000 + timeout->tv_nsec / 1000000) : INFINITE; | |
b2fc9f3d | 1755 | |
6cdfb6e6 | 1756 | /* If the descriptor sets are NULL but timeout isn't, then just Sleep. */ |
177c0ea7 | 1757 | if (rfds == NULL && wfds == NULL && efds == NULL && timeout != NULL) |
6cdfb6e6 | 1758 | { |
b2fc9f3d | 1759 | Sleep (timeout_ms); |
6cdfb6e6 RS |
1760 | return 0; |
1761 | } | |
1762 | ||
1763 | /* Otherwise, we only handle rfds, so fail otherwise. */ | |
1764 | if (rfds == NULL || wfds != NULL || efds != NULL) | |
1765 | { | |
1766 | errno = EINVAL; | |
1767 | return -1; | |
1768 | } | |
177c0ea7 | 1769 | |
6cdfb6e6 RS |
1770 | orfds = *rfds; |
1771 | FD_ZERO (rfds); | |
1772 | nr = 0; | |
86143765 RS |
1773 | |
1774 | /* Always wait on interrupt_handle, to detect C-g (quit). */ | |
1775 | wait_hnd[0] = interrupt_handle; | |
1776 | fdindex[0] = -1; | |
177c0ea7 | 1777 | |
b2fc9f3d | 1778 | /* Build a list of pipe handles to wait on. */ |
86143765 | 1779 | nh = 1; |
6cdfb6e6 RS |
1780 | for (i = 0; i < nfds; i++) |
1781 | if (FD_ISSET (i, &orfds)) | |
1782 | { | |
1783 | if (i == 0) | |
1784 | { | |
c519b5e1 GV |
1785 | if (keyboard_handle) |
1786 | { | |
1787 | /* Handle stdin specially */ | |
1788 | wait_hnd[nh] = keyboard_handle; | |
1789 | fdindex[nh] = i; | |
1790 | nh++; | |
1791 | } | |
6cdfb6e6 RS |
1792 | |
1793 | /* Check for any emacs-generated input in the queue since | |
1794 | it won't be detected in the wait */ | |
1795 | if (detect_input_pending ()) | |
1796 | { | |
1797 | FD_SET (i, rfds); | |
c519b5e1 | 1798 | return 1; |
6cdfb6e6 RS |
1799 | } |
1800 | } | |
1801 | else | |
1802 | { | |
c519b5e1 GV |
1803 | /* Child process and socket input */ |
1804 | cp = fd_info[i].cp; | |
6cdfb6e6 RS |
1805 | if (cp) |
1806 | { | |
c519b5e1 GV |
1807 | int current_status = cp->status; |
1808 | ||
1809 | if (current_status == STATUS_READ_ACKNOWLEDGED) | |
1810 | { | |
1811 | /* Tell reader thread which file handle to use. */ | |
1812 | cp->fd = i; | |
1813 | /* Wake up the reader thread for this process */ | |
1814 | cp->status = STATUS_READ_READY; | |
1815 | if (!SetEvent (cp->char_consumed)) | |
1816 | DebPrint (("nt_select.SetEvent failed with " | |
1817 | "%lu for fd %ld\n", GetLastError (), i)); | |
1818 | } | |
1819 | ||
1820 | #ifdef CHECK_INTERLOCK | |
1821 | /* slightly crude cross-checking of interlock between threads */ | |
1822 | ||
1823 | current_status = cp->status; | |
1824 | if (WaitForSingleObject (cp->char_avail, 0) == WAIT_OBJECT_0) | |
1825 | { | |
04bf5b65 | 1826 | /* char_avail has been signaled, so status (which may |
c519b5e1 GV |
1827 | have changed) should indicate read has completed |
1828 | but has not been acknowledged. */ | |
1829 | current_status = cp->status; | |
b2fc9f3d GV |
1830 | if (current_status != STATUS_READ_SUCCEEDED |
1831 | && current_status != STATUS_READ_FAILED) | |
c519b5e1 GV |
1832 | DebPrint (("char_avail set, but read not completed: status %d\n", |
1833 | current_status)); | |
1834 | } | |
1835 | else | |
1836 | { | |
04bf5b65 | 1837 | /* char_avail has not been signaled, so status should |
c519b5e1 | 1838 | indicate that read is in progress; small possibility |
04bf5b65 | 1839 | that read has completed but event wasn't yet signaled |
c519b5e1 GV |
1840 | when we tested it (because a context switch occurred |
1841 | or if running on separate CPUs). */ | |
b2fc9f3d GV |
1842 | if (current_status != STATUS_READ_READY |
1843 | && current_status != STATUS_READ_IN_PROGRESS | |
1844 | && current_status != STATUS_READ_SUCCEEDED | |
1845 | && current_status != STATUS_READ_FAILED) | |
c519b5e1 GV |
1846 | DebPrint (("char_avail reset, but read status is bad: %d\n", |
1847 | current_status)); | |
1848 | } | |
1849 | #endif | |
1850 | wait_hnd[nh] = cp->char_avail; | |
1851 | fdindex[nh] = i; | |
1088b922 | 1852 | if (!wait_hnd[nh]) emacs_abort (); |
c519b5e1 | 1853 | nh++; |
6cdfb6e6 RS |
1854 | #ifdef FULL_DEBUG |
1855 | DebPrint (("select waiting on child %d fd %d\n", | |
1856 | cp-child_procs, i)); | |
1857 | #endif | |
6cdfb6e6 RS |
1858 | } |
1859 | else | |
1860 | { | |
c519b5e1 | 1861 | /* Unable to find something to wait on for this fd, skip */ |
ef79fbba GV |
1862 | |
1863 | /* Note that this is not a fatal error, and can in fact | |
1864 | happen in unusual circumstances. Specifically, if | |
1865 | sys_spawnve fails, eg. because the program doesn't | |
1866 | exist, and debug-on-error is t so Fsignal invokes a | |
1867 | nested input loop, then the process output pipe is | |
1868 | still included in input_wait_mask with no child_proc | |
1869 | associated with it. (It is removed when the debugger | |
1870 | exits the nested input loop and the error is thrown.) */ | |
1871 | ||
c519b5e1 | 1872 | DebPrint (("sys_select: fd %ld is invalid! ignoring\n", i)); |
6cdfb6e6 RS |
1873 | } |
1874 | } | |
1875 | } | |
b2fc9f3d GV |
1876 | |
1877 | count_children: | |
1878 | /* Add handles of child processes. */ | |
1879 | nc = 0; | |
9d4f32e8 | 1880 | for (cp = child_procs + (child_proc_count-1); cp >= child_procs; cp--) |
ef79fbba GV |
1881 | /* Some child_procs might be sockets; ignore them. Also some |
1882 | children may have died already, but we haven't finished reading | |
1883 | the process output; ignore them too. */ | |
1884 | if (CHILD_ACTIVE (cp) && cp->procinfo.hProcess | |
1885 | && (cp->fd < 0 | |
1886 | || (fd_info[cp->fd].flags & FILE_SEND_SIGCHLD) == 0 | |
1887 | || (fd_info[cp->fd].flags & FILE_AT_EOF) != 0) | |
1888 | ) | |
b2fc9f3d GV |
1889 | { |
1890 | wait_hnd[nh + nc] = cp->procinfo.hProcess; | |
1891 | cps[nc] = cp; | |
1892 | nc++; | |
1893 | } | |
177c0ea7 | 1894 | |
6cdfb6e6 | 1895 | /* Nothing to look for, so we didn't find anything */ |
177c0ea7 | 1896 | if (nh + nc == 0) |
6cdfb6e6 | 1897 | { |
22759c72 | 1898 | if (timeout) |
b2fc9f3d | 1899 | Sleep (timeout_ms); |
6cdfb6e6 RS |
1900 | return 0; |
1901 | } | |
177c0ea7 | 1902 | |
b2fc9f3d | 1903 | start_time = GetTickCount (); |
8b031dcc | 1904 | |
04bf5b65 | 1905 | /* Wait for input or child death to be signaled. If user input is |
8b031dcc AI |
1906 | allowed, then also accept window messages. */ |
1907 | if (FD_ISSET (0, &orfds)) | |
1908 | active = MsgWaitForMultipleObjects (nh + nc, wait_hnd, FALSE, timeout_ms, | |
1909 | QS_ALLINPUT); | |
1910 | else | |
1911 | active = WaitForMultipleObjects (nh + nc, wait_hnd, FALSE, timeout_ms); | |
c519b5e1 | 1912 | |
6cdfb6e6 RS |
1913 | if (active == WAIT_FAILED) |
1914 | { | |
1915 | DebPrint (("select.WaitForMultipleObjects (%d, %lu) failed with %lu\n", | |
b2fc9f3d | 1916 | nh + nc, timeout_ms, GetLastError ())); |
d64b707c | 1917 | /* don't return EBADF - this causes wait_reading_process_output to |
c519b5e1 GV |
1918 | abort; WAIT_FAILED is returned when single-stepping under |
1919 | Windows 95 after switching thread focus in debugger, and | |
1920 | possibly at other times. */ | |
1921 | errno = EINTR; | |
6cdfb6e6 RS |
1922 | return -1; |
1923 | } | |
1924 | else if (active == WAIT_TIMEOUT) | |
1925 | { | |
1926 | return 0; | |
1927 | } | |
b2fc9f3d GV |
1928 | else if (active >= WAIT_OBJECT_0 |
1929 | && active < WAIT_OBJECT_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
1930 | { |
1931 | active -= WAIT_OBJECT_0; | |
1932 | } | |
b2fc9f3d GV |
1933 | else if (active >= WAIT_ABANDONED_0 |
1934 | && active < WAIT_ABANDONED_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
1935 | { |
1936 | active -= WAIT_ABANDONED_0; | |
1937 | } | |
b2fc9f3d | 1938 | else |
1088b922 | 1939 | emacs_abort (); |
6cdfb6e6 | 1940 | |
c519b5e1 | 1941 | /* Loop over all handles after active (now officially documented as |
04bf5b65 | 1942 | being the first signaled handle in the array). We do this to |
c519b5e1 GV |
1943 | ensure fairness, so that all channels with data available will be |
1944 | processed - otherwise higher numbered channels could be starved. */ | |
1945 | do | |
6cdfb6e6 | 1946 | { |
8b031dcc AI |
1947 | if (active == nh + nc) |
1948 | { | |
1949 | /* There are messages in the lisp thread's queue; we must | |
1950 | drain the queue now to ensure they are processed promptly, | |
1951 | because if we don't do so, we will not be woken again until | |
1952 | further messages arrive. | |
1953 | ||
1954 | NB. If ever we allow window message procedures to callback | |
1955 | into lisp, we will need to ensure messages are dispatched | |
1956 | at a safe time for lisp code to be run (*), and we may also | |
1957 | want to provide some hooks in the dispatch loop to cater | |
1958 | for modeless dialogs created by lisp (ie. to register | |
1959 | window handles to pass to IsDialogMessage). | |
1960 | ||
1961 | (*) Note that MsgWaitForMultipleObjects above is an | |
1962 | internal dispatch point for messages that are sent to | |
1963 | windows created by this thread. */ | |
1964 | drain_message_queue (); | |
1965 | } | |
1966 | else if (active >= nh) | |
b2fc9f3d GV |
1967 | { |
1968 | cp = cps[active - nh]; | |
ef79fbba GV |
1969 | |
1970 | /* We cannot always signal SIGCHLD immediately; if we have not | |
1971 | finished reading the process output, we must delay sending | |
1972 | SIGCHLD until we do. */ | |
1973 | ||
1974 | if (cp->fd >= 0 && (fd_info[cp->fd].flags & FILE_AT_EOF) == 0) | |
1975 | fd_info[cp->fd].flags |= FILE_SEND_SIGCHLD; | |
b2fc9f3d | 1976 | /* SIG_DFL for SIGCHLD is ignore */ |
ef79fbba GV |
1977 | else if (sig_handlers[SIGCHLD] != SIG_DFL && |
1978 | sig_handlers[SIGCHLD] != SIG_IGN) | |
b2fc9f3d GV |
1979 | { |
1980 | #ifdef FULL_DEBUG | |
1981 | DebPrint (("select calling SIGCHLD handler for pid %d\n", | |
1982 | cp->pid)); | |
1983 | #endif | |
1984 | dead_child = cp; | |
1985 | sig_handlers[SIGCHLD] (SIGCHLD); | |
1986 | dead_child = NULL; | |
1987 | } | |
1988 | } | |
86143765 RS |
1989 | else if (fdindex[active] == -1) |
1990 | { | |
1991 | /* Quit (C-g) was detected. */ | |
1992 | errno = EINTR; | |
1993 | return -1; | |
1994 | } | |
b2fc9f3d | 1995 | else if (fdindex[active] == 0) |
c519b5e1 GV |
1996 | { |
1997 | /* Keyboard input available */ | |
1998 | FD_SET (0, rfds); | |
6cdfb6e6 | 1999 | nr++; |
c519b5e1 | 2000 | } |
6cdfb6e6 | 2001 | else |
c519b5e1 | 2002 | { |
b2fc9f3d GV |
2003 | /* must be a socket or pipe - read ahead should have |
2004 | completed, either succeeding or failing. */ | |
c519b5e1 GV |
2005 | FD_SET (fdindex[active], rfds); |
2006 | nr++; | |
c519b5e1 GV |
2007 | } |
2008 | ||
b2fc9f3d GV |
2009 | /* Even though wait_reading_process_output only reads from at most |
2010 | one channel, we must process all channels here so that we reap | |
2011 | all children that have died. */ | |
2012 | while (++active < nh + nc) | |
c519b5e1 GV |
2013 | if (WaitForSingleObject (wait_hnd[active], 0) == WAIT_OBJECT_0) |
2014 | break; | |
b2fc9f3d GV |
2015 | } while (active < nh + nc); |
2016 | ||
2017 | /* If no input has arrived and timeout hasn't expired, wait again. */ | |
2018 | if (nr == 0) | |
2019 | { | |
2020 | DWORD elapsed = GetTickCount () - start_time; | |
2021 | ||
2022 | if (timeout_ms > elapsed) /* INFINITE is MAX_UINT */ | |
2023 | { | |
2024 | if (timeout_ms != INFINITE) | |
2025 | timeout_ms -= elapsed; | |
2026 | goto count_children; | |
2027 | } | |
2028 | } | |
c519b5e1 | 2029 | |
6cdfb6e6 RS |
2030 | return nr; |
2031 | } | |
2032 | ||
c519b5e1 | 2033 | /* Substitute for certain kill () operations */ |
b2fc9f3d GV |
2034 | |
2035 | static BOOL CALLBACK | |
42c95ffb | 2036 | find_child_console (HWND hwnd, LPARAM arg) |
b2fc9f3d | 2037 | { |
42c95ffb | 2038 | child_process * cp = (child_process *) arg; |
b2fc9f3d GV |
2039 | DWORD thread_id; |
2040 | DWORD process_id; | |
2041 | ||
2042 | thread_id = GetWindowThreadProcessId (hwnd, &process_id); | |
2043 | if (process_id == cp->procinfo.dwProcessId) | |
2044 | { | |
2045 | char window_class[32]; | |
2046 | ||
2047 | GetClassName (hwnd, window_class, sizeof (window_class)); | |
2048 | if (strcmp (window_class, | |
417a7a0e | 2049 | (os_subtype == OS_9X) |
b2fc9f3d GV |
2050 | ? "tty" |
2051 | : "ConsoleWindowClass") == 0) | |
2052 | { | |
2053 | cp->hwnd = hwnd; | |
2054 | return FALSE; | |
2055 | } | |
2056 | } | |
2057 | /* keep looking */ | |
2058 | return TRUE; | |
2059 | } | |
2060 | ||
16b22fef | 2061 | /* Emulate 'kill', but only for other processes. */ |
177c0ea7 | 2062 | int |
c519b5e1 | 2063 | sys_kill (int pid, int sig) |
6cdfb6e6 RS |
2064 | { |
2065 | child_process *cp; | |
c519b5e1 GV |
2066 | HANDLE proc_hand; |
2067 | int need_to_free = 0; | |
2068 | int rc = 0; | |
177c0ea7 | 2069 | |
6cdfb6e6 RS |
2070 | /* Only handle signals that will result in the process dying */ |
2071 | if (sig != SIGINT && sig != SIGKILL && sig != SIGQUIT && sig != SIGHUP) | |
2072 | { | |
2073 | errno = EINVAL; | |
2074 | return -1; | |
2075 | } | |
c519b5e1 | 2076 | |
6cdfb6e6 RS |
2077 | cp = find_child_pid (pid); |
2078 | if (cp == NULL) | |
2079 | { | |
16b22fef EZ |
2080 | /* We were passed a PID of something other than our subprocess. |
2081 | If that is our own PID, we will send to ourself a message to | |
2082 | close the selected frame, which does not necessarily | |
2083 | terminates Emacs. But then we are not supposed to call | |
2084 | sys_kill with our own PID. */ | |
c519b5e1 GV |
2085 | proc_hand = OpenProcess (PROCESS_TERMINATE, 0, pid); |
2086 | if (proc_hand == NULL) | |
2087 | { | |
2088 | errno = EPERM; | |
2089 | return -1; | |
2090 | } | |
2091 | need_to_free = 1; | |
2092 | } | |
2093 | else | |
2094 | { | |
2095 | proc_hand = cp->procinfo.hProcess; | |
2096 | pid = cp->procinfo.dwProcessId; | |
b2fc9f3d GV |
2097 | |
2098 | /* Try to locate console window for process. */ | |
2099 | EnumWindows (find_child_console, (LPARAM) cp); | |
6cdfb6e6 | 2100 | } |
177c0ea7 | 2101 | |
a55a5f3c | 2102 | if (sig == SIGINT || sig == SIGQUIT) |
6cdfb6e6 | 2103 | { |
b2fc9f3d GV |
2104 | if (NILP (Vw32_start_process_share_console) && cp && cp->hwnd) |
2105 | { | |
2106 | BYTE control_scan_code = (BYTE) MapVirtualKey (VK_CONTROL, 0); | |
a55a5f3c AI |
2107 | /* Fake Ctrl-C for SIGINT, and Ctrl-Break for SIGQUIT. */ |
2108 | BYTE vk_break_code = (sig == SIGINT) ? 'C' : VK_CANCEL; | |
b2fc9f3d GV |
2109 | BYTE break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0); |
2110 | HWND foreground_window; | |
2111 | ||
2112 | if (break_scan_code == 0) | |
2113 | { | |
a55a5f3c | 2114 | /* Fake Ctrl-C for SIGQUIT if we can't manage Ctrl-Break. */ |
b2fc9f3d GV |
2115 | vk_break_code = 'C'; |
2116 | break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0); | |
2117 | } | |
2118 | ||
2119 | foreground_window = GetForegroundWindow (); | |
f446016f | 2120 | if (foreground_window) |
b2fc9f3d | 2121 | { |
f446016f AI |
2122 | /* NT 5.0, and apparently also Windows 98, will not allow |
2123 | a Window to be set to foreground directly without the | |
2124 | user's involvement. The workaround is to attach | |
2125 | ourselves to the thread that owns the foreground | |
2126 | window, since that is the only thread that can set the | |
2127 | foreground window. */ | |
2128 | DWORD foreground_thread, child_thread; | |
2129 | foreground_thread = | |
2130 | GetWindowThreadProcessId (foreground_window, NULL); | |
2131 | if (foreground_thread == GetCurrentThreadId () | |
2132 | || !AttachThreadInput (GetCurrentThreadId (), | |
2133 | foreground_thread, TRUE)) | |
2134 | foreground_thread = 0; | |
2135 | ||
2136 | child_thread = GetWindowThreadProcessId (cp->hwnd, NULL); | |
2137 | if (child_thread == GetCurrentThreadId () | |
2138 | || !AttachThreadInput (GetCurrentThreadId (), | |
2139 | child_thread, TRUE)) | |
2140 | child_thread = 0; | |
2141 | ||
2142 | /* Set the foreground window to the child. */ | |
2143 | if (SetForegroundWindow (cp->hwnd)) | |
2144 | { | |
2145 | /* Generate keystrokes as if user had typed Ctrl-Break or | |
2146 | Ctrl-C. */ | |
2147 | keybd_event (VK_CONTROL, control_scan_code, 0, 0); | |
2148 | keybd_event (vk_break_code, break_scan_code, | |
2149 | (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY), 0); | |
2150 | keybd_event (vk_break_code, break_scan_code, | |
2151 | (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY) | |
2152 | | KEYEVENTF_KEYUP, 0); | |
2153 | keybd_event (VK_CONTROL, control_scan_code, | |
2154 | KEYEVENTF_KEYUP, 0); | |
2155 | ||
2156 | /* Sleep for a bit to give time for Emacs frame to respond | |
2157 | to focus change events (if Emacs was active app). */ | |
2158 | Sleep (100); | |
2159 | ||
2160 | SetForegroundWindow (foreground_window); | |
2161 | } | |
2162 | /* Detach from the foreground and child threads now that | |
2163 | the foreground switching is over. */ | |
2164 | if (foreground_thread) | |
2165 | AttachThreadInput (GetCurrentThreadId (), | |
2166 | foreground_thread, FALSE); | |
2167 | if (child_thread) | |
2168 | AttachThreadInput (GetCurrentThreadId (), | |
2169 | child_thread, FALSE); | |
2170 | } | |
2171 | } | |
c519b5e1 | 2172 | /* Ctrl-Break is NT equivalent of SIGINT. */ |
b2fc9f3d | 2173 | else if (!GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, pid)) |
6cdfb6e6 | 2174 | { |
c519b5e1 | 2175 | DebPrint (("sys_kill.GenerateConsoleCtrlEvent return %d " |
6cdfb6e6 RS |
2176 | "for pid %lu\n", GetLastError (), pid)); |
2177 | errno = EINVAL; | |
c519b5e1 | 2178 | rc = -1; |
80874ef7 | 2179 | } |
6cdfb6e6 RS |
2180 | } |
2181 | else | |
2182 | { | |
b2fc9f3d GV |
2183 | if (NILP (Vw32_start_process_share_console) && cp && cp->hwnd) |
2184 | { | |
2185 | #if 1 | |
417a7a0e | 2186 | if (os_subtype == OS_9X) |
b2fc9f3d GV |
2187 | { |
2188 | /* | |
2189 | Another possibility is to try terminating the VDM out-right by | |
2190 | calling the Shell VxD (id 0x17) V86 interface, function #4 | |
2191 | "SHELL_Destroy_VM", ie. | |
2192 | ||
2193 | mov edx,4 | |
2194 | mov ebx,vm_handle | |
2195 | call shellapi | |
2196 | ||
2197 | First need to determine the current VM handle, and then arrange for | |
2198 | the shellapi call to be made from the system vm (by using | |
2199 | Switch_VM_and_callback). | |
2200 | ||
2201 | Could try to invoke DestroyVM through CallVxD. | |
2202 | ||
2203 | */ | |
ef79fbba | 2204 | #if 0 |
b46a6a83 | 2205 | /* On Windows 95, posting WM_QUIT causes the 16-bit subsystem |
ef79fbba GV |
2206 | to hang when cmdproxy is used in conjunction with |
2207 | command.com for an interactive shell. Posting | |
2208 | WM_CLOSE pops up a dialog that, when Yes is selected, | |
2209 | does the same thing. TerminateProcess is also less | |
2210 | than ideal in that subprocesses tend to stick around | |
2211 | until the machine is shutdown, but at least it | |
2212 | doesn't freeze the 16-bit subsystem. */ | |
b2fc9f3d | 2213 | PostMessage (cp->hwnd, WM_QUIT, 0xff, 0); |
ef79fbba GV |
2214 | #endif |
2215 | if (!TerminateProcess (proc_hand, 0xff)) | |
2216 | { | |
2217 | DebPrint (("sys_kill.TerminateProcess returned %d " | |
2218 | "for pid %lu\n", GetLastError (), pid)); | |
2219 | errno = EINVAL; | |
2220 | rc = -1; | |
2221 | } | |
b2fc9f3d GV |
2222 | } |
2223 | else | |
2224 | #endif | |
2225 | PostMessage (cp->hwnd, WM_CLOSE, 0, 0); | |
2226 | } | |
fbd6baed | 2227 | /* Kill the process. On W32 this doesn't kill child processes |
8eae7766 | 2228 | so it doesn't work very well for shells which is why it's not |
b2fc9f3d GV |
2229 | used in every case. */ |
2230 | else if (!TerminateProcess (proc_hand, 0xff)) | |
6cdfb6e6 | 2231 | { |
c519b5e1 | 2232 | DebPrint (("sys_kill.TerminateProcess returned %d " |
6cdfb6e6 RS |
2233 | "for pid %lu\n", GetLastError (), pid)); |
2234 | errno = EINVAL; | |
c519b5e1 | 2235 | rc = -1; |
6cdfb6e6 RS |
2236 | } |
2237 | } | |
c519b5e1 GV |
2238 | |
2239 | if (need_to_free) | |
2240 | CloseHandle (proc_hand); | |
2241 | ||
2242 | return rc; | |
6cdfb6e6 RS |
2243 | } |
2244 | ||
c519b5e1 GV |
2245 | /* The following two routines are used to manipulate stdin, stdout, and |
2246 | stderr of our child processes. | |
2247 | ||
2248 | Assuming that in, out, and err are *not* inheritable, we make them | |
2249 | stdin, stdout, and stderr of the child as follows: | |
2250 | ||
2251 | - Save the parent's current standard handles. | |
2252 | - Set the std handles to inheritable duplicates of the ones being passed in. | |
2253 | (Note that _get_osfhandle() is an io.h procedure that retrieves the | |
2254 | NT file handle for a crt file descriptor.) | |
2255 | - Spawn the child, which inherits in, out, and err as stdin, | |
2256 | stdout, and stderr. (see Spawnve) | |
2257 | - Close the std handles passed to the child. | |
2258 | - Reset the parent's standard handles to the saved handles. | |
2259 | (see reset_standard_handles) | |
2260 | We assume that the caller closes in, out, and err after calling us. */ | |
2261 | ||
2262 | void | |
2263 | prepare_standard_handles (int in, int out, int err, HANDLE handles[3]) | |
6cdfb6e6 | 2264 | { |
c519b5e1 GV |
2265 | HANDLE parent; |
2266 | HANDLE newstdin, newstdout, newstderr; | |
2267 | ||
2268 | parent = GetCurrentProcess (); | |
2269 | ||
2270 | handles[0] = GetStdHandle (STD_INPUT_HANDLE); | |
2271 | handles[1] = GetStdHandle (STD_OUTPUT_HANDLE); | |
2272 | handles[2] = GetStdHandle (STD_ERROR_HANDLE); | |
2273 | ||
2274 | /* make inheritable copies of the new handles */ | |
177c0ea7 | 2275 | if (!DuplicateHandle (parent, |
c519b5e1 GV |
2276 | (HANDLE) _get_osfhandle (in), |
2277 | parent, | |
177c0ea7 JB |
2278 | &newstdin, |
2279 | 0, | |
2280 | TRUE, | |
c519b5e1 GV |
2281 | DUPLICATE_SAME_ACCESS)) |
2282 | report_file_error ("Duplicating input handle for child", Qnil); | |
177c0ea7 | 2283 | |
c519b5e1 GV |
2284 | if (!DuplicateHandle (parent, |
2285 | (HANDLE) _get_osfhandle (out), | |
2286 | parent, | |
2287 | &newstdout, | |
2288 | 0, | |
2289 | TRUE, | |
2290 | DUPLICATE_SAME_ACCESS)) | |
2291 | report_file_error ("Duplicating output handle for child", Qnil); | |
177c0ea7 | 2292 | |
c519b5e1 GV |
2293 | if (!DuplicateHandle (parent, |
2294 | (HANDLE) _get_osfhandle (err), | |
2295 | parent, | |
2296 | &newstderr, | |
2297 | 0, | |
2298 | TRUE, | |
2299 | DUPLICATE_SAME_ACCESS)) | |
2300 | report_file_error ("Duplicating error handle for child", Qnil); | |
2301 | ||
2302 | /* and store them as our std handles */ | |
2303 | if (!SetStdHandle (STD_INPUT_HANDLE, newstdin)) | |
2304 | report_file_error ("Changing stdin handle", Qnil); | |
177c0ea7 | 2305 | |
c519b5e1 GV |
2306 | if (!SetStdHandle (STD_OUTPUT_HANDLE, newstdout)) |
2307 | report_file_error ("Changing stdout handle", Qnil); | |
2308 | ||
2309 | if (!SetStdHandle (STD_ERROR_HANDLE, newstderr)) | |
2310 | report_file_error ("Changing stderr handle", Qnil); | |
2311 | } | |
2312 | ||
2313 | void | |
2314 | reset_standard_handles (int in, int out, int err, HANDLE handles[3]) | |
2315 | { | |
2316 | /* close the duplicated handles passed to the child */ | |
2317 | CloseHandle (GetStdHandle (STD_INPUT_HANDLE)); | |
2318 | CloseHandle (GetStdHandle (STD_OUTPUT_HANDLE)); | |
2319 | CloseHandle (GetStdHandle (STD_ERROR_HANDLE)); | |
2320 | ||
2321 | /* now restore parent's saved std handles */ | |
2322 | SetStdHandle (STD_INPUT_HANDLE, handles[0]); | |
2323 | SetStdHandle (STD_OUTPUT_HANDLE, handles[1]); | |
2324 | SetStdHandle (STD_ERROR_HANDLE, handles[2]); | |
6cdfb6e6 | 2325 | } |
c519b5e1 | 2326 | |
b2fc9f3d GV |
2327 | void |
2328 | set_process_dir (char * dir) | |
2329 | { | |
2330 | process_dir = dir; | |
2331 | } | |
2332 | ||
a11e68d0 RS |
2333 | /* To avoid problems with winsock implementations that work over dial-up |
2334 | connections causing or requiring a connection to exist while Emacs is | |
2335 | running, Emacs no longer automatically loads winsock on startup if it | |
2336 | is present. Instead, it will be loaded when open-network-stream is | |
2337 | first called. | |
2338 | ||
2339 | To allow full control over when winsock is loaded, we provide these | |
2340 | two functions to dynamically load and unload winsock. This allows | |
2341 | dial-up users to only be connected when they actually need to use | |
2342 | socket services. */ | |
2343 | ||
7684e57b | 2344 | /* From w32.c */ |
a11e68d0 RS |
2345 | extern HANDLE winsock_lib; |
2346 | extern BOOL term_winsock (void); | |
2347 | extern BOOL init_winsock (int load_now); | |
2348 | ||
fbd6baed | 2349 | DEFUN ("w32-has-winsock", Fw32_has_winsock, Sw32_has_winsock, 0, 1, 0, |
33f09670 JR |
2350 | doc: /* Test for presence of the Windows socket library `winsock'. |
2351 | Returns non-nil if winsock support is present, nil otherwise. | |
2352 | ||
2353 | If the optional argument LOAD-NOW is non-nil, the winsock library is | |
2354 | also loaded immediately if not already loaded. If winsock is loaded, | |
2355 | the winsock local hostname is returned (since this may be different from | |
2356 | the value of `system-name' and should supplant it), otherwise t is | |
2357 | returned to indicate winsock support is present. */) | |
5842a27b | 2358 | (Lisp_Object load_now) |
a11e68d0 RS |
2359 | { |
2360 | int have_winsock; | |
2361 | ||
2362 | have_winsock = init_winsock (!NILP (load_now)); | |
2363 | if (have_winsock) | |
2364 | { | |
2365 | if (winsock_lib != NULL) | |
2366 | { | |
2367 | /* Return new value for system-name. The best way to do this | |
2368 | is to call init_system_name, saving and restoring the | |
2369 | original value to avoid side-effects. */ | |
2370 | Lisp_Object orig_hostname = Vsystem_name; | |
2371 | Lisp_Object hostname; | |
2372 | ||
2373 | init_system_name (); | |
2374 | hostname = Vsystem_name; | |
2375 | Vsystem_name = orig_hostname; | |
2376 | return hostname; | |
2377 | } | |
2378 | return Qt; | |
2379 | } | |
2380 | return Qnil; | |
2381 | } | |
2382 | ||
fbd6baed | 2383 | DEFUN ("w32-unload-winsock", Fw32_unload_winsock, Sw32_unload_winsock, |
a11e68d0 | 2384 | 0, 0, 0, |
33f09670 JR |
2385 | doc: /* Unload the Windows socket library `winsock' if loaded. |
2386 | This is provided to allow dial-up socket connections to be disconnected | |
2387 | when no longer needed. Returns nil without unloading winsock if any | |
2388 | socket connections still exist. */) | |
5842a27b | 2389 | (void) |
a11e68d0 RS |
2390 | { |
2391 | return term_winsock () ? Qt : Qnil; | |
2392 | } | |
2393 | ||
93fdf2f8 | 2394 | \f |
b2fc9f3d GV |
2395 | /* Some miscellaneous functions that are Windows specific, but not GUI |
2396 | specific (ie. are applicable in terminal or batch mode as well). */ | |
2397 | ||
b2fc9f3d | 2398 | DEFUN ("w32-short-file-name", Fw32_short_file_name, Sw32_short_file_name, 1, 1, 0, |
33f09670 JR |
2399 | doc: /* Return the short file name version (8.3) of the full path of FILENAME. |
2400 | If FILENAME does not exist, return nil. | |
2401 | All path elements in FILENAME are converted to their short names. */) | |
5842a27b | 2402 | (Lisp_Object filename) |
b2fc9f3d GV |
2403 | { |
2404 | char shortname[MAX_PATH]; | |
2405 | ||
b7826503 | 2406 | CHECK_STRING (filename); |
b2fc9f3d GV |
2407 | |
2408 | /* first expand it. */ | |
2409 | filename = Fexpand_file_name (filename, Qnil); | |
2410 | ||
2411 | /* luckily, this returns the short version of each element in the path. */ | |
b23077df | 2412 | if (GetShortPathName (SDATA (ENCODE_FILE (filename)), shortname, MAX_PATH) == 0) |
b2fc9f3d GV |
2413 | return Qnil; |
2414 | ||
087fc47a | 2415 | dostounix_filename (shortname); |
b2fc9f3d GV |
2416 | |
2417 | return build_string (shortname); | |
2418 | } | |
2419 | ||
2420 | ||
2421 | DEFUN ("w32-long-file-name", Fw32_long_file_name, Sw32_long_file_name, | |
2422 | 1, 1, 0, | |
33f09670 JR |
2423 | doc: /* Return the long file name version of the full path of FILENAME. |
2424 | If FILENAME does not exist, return nil. | |
2425 | All path elements in FILENAME are converted to their long names. */) | |
5842a27b | 2426 | (Lisp_Object filename) |
b2fc9f3d GV |
2427 | { |
2428 | char longname[ MAX_PATH ]; | |
8dcaeba2 | 2429 | int drive_only = 0; |
b2fc9f3d | 2430 | |
b7826503 | 2431 | CHECK_STRING (filename); |
b2fc9f3d | 2432 | |
8dcaeba2 JR |
2433 | if (SBYTES (filename) == 2 |
2434 | && *(SDATA (filename) + 1) == ':') | |
2435 | drive_only = 1; | |
2436 | ||
b2fc9f3d GV |
2437 | /* first expand it. */ |
2438 | filename = Fexpand_file_name (filename, Qnil); | |
2439 | ||
b23077df | 2440 | if (!w32_get_long_filename (SDATA (ENCODE_FILE (filename)), longname, MAX_PATH)) |
b2fc9f3d GV |
2441 | return Qnil; |
2442 | ||
087fc47a | 2443 | dostounix_filename (longname); |
b2fc9f3d | 2444 | |
8dcaeba2 JR |
2445 | /* If we were passed only a drive, make sure that a slash is not appended |
2446 | for consistency with directories. Allow for drive mapping via SUBST | |
2447 | in case expand-file-name is ever changed to expand those. */ | |
2448 | if (drive_only && longname[1] == ':' && longname[2] == '/' && !longname[3]) | |
2449 | longname[2] = '\0'; | |
2450 | ||
b23077df | 2451 | return DECODE_FILE (build_string (longname)); |
b2fc9f3d GV |
2452 | } |
2453 | ||
33f09670 JR |
2454 | DEFUN ("w32-set-process-priority", Fw32_set_process_priority, |
2455 | Sw32_set_process_priority, 2, 2, 0, | |
2456 | doc: /* Set the priority of PROCESS to PRIORITY. | |
2457 | If PROCESS is nil, the priority of Emacs is changed, otherwise the | |
2458 | priority of the process whose pid is PROCESS is changed. | |
2459 | PRIORITY should be one of the symbols high, normal, or low; | |
2460 | any other symbol will be interpreted as normal. | |
2461 | ||
2462 | If successful, the return value is t, otherwise nil. */) | |
5842a27b | 2463 | (Lisp_Object process, Lisp_Object priority) |
b2fc9f3d GV |
2464 | { |
2465 | HANDLE proc_handle = GetCurrentProcess (); | |
2466 | DWORD priority_class = NORMAL_PRIORITY_CLASS; | |
2467 | Lisp_Object result = Qnil; | |
2468 | ||
b7826503 | 2469 | CHECK_SYMBOL (priority); |
b2fc9f3d GV |
2470 | |
2471 | if (!NILP (process)) | |
2472 | { | |
2473 | DWORD pid; | |
2474 | child_process *cp; | |
2475 | ||
b7826503 | 2476 | CHECK_NUMBER (process); |
b2fc9f3d GV |
2477 | |
2478 | /* Allow pid to be an internally generated one, or one obtained | |
b46a6a83 | 2479 | externally. This is necessary because real pids on Windows 95 are |
b2fc9f3d GV |
2480 | negative. */ |
2481 | ||
2482 | pid = XINT (process); | |
2483 | cp = find_child_pid (pid); | |
2484 | if (cp != NULL) | |
2485 | pid = cp->procinfo.dwProcessId; | |
2486 | ||
2487 | proc_handle = OpenProcess (PROCESS_SET_INFORMATION, FALSE, pid); | |
2488 | } | |
2489 | ||
2490 | if (EQ (priority, Qhigh)) | |
2491 | priority_class = HIGH_PRIORITY_CLASS; | |
2492 | else if (EQ (priority, Qlow)) | |
2493 | priority_class = IDLE_PRIORITY_CLASS; | |
2494 | ||
2495 | if (proc_handle != NULL) | |
2496 | { | |
2497 | if (SetPriorityClass (proc_handle, priority_class)) | |
2498 | result = Qt; | |
2499 | if (!NILP (process)) | |
2500 | CloseHandle (proc_handle); | |
2501 | } | |
2502 | ||
2503 | return result; | |
2504 | } | |
2505 | ||
d613418b EZ |
2506 | #ifdef HAVE_LANGINFO_CODESET |
2507 | /* Emulation of nl_langinfo. Used in fns.c:Flocale_info. */ | |
b56ceb92 JB |
2508 | char * |
2509 | nl_langinfo (nl_item item) | |
d613418b EZ |
2510 | { |
2511 | /* Conversion of Posix item numbers to their Windows equivalents. */ | |
2512 | static const LCTYPE w32item[] = { | |
2513 | LOCALE_IDEFAULTANSICODEPAGE, | |
2514 | LOCALE_SDAYNAME1, LOCALE_SDAYNAME2, LOCALE_SDAYNAME3, | |
2515 | LOCALE_SDAYNAME4, LOCALE_SDAYNAME5, LOCALE_SDAYNAME6, LOCALE_SDAYNAME7, | |
2516 | LOCALE_SMONTHNAME1, LOCALE_SMONTHNAME2, LOCALE_SMONTHNAME3, | |
2517 | LOCALE_SMONTHNAME4, LOCALE_SMONTHNAME5, LOCALE_SMONTHNAME6, | |
2518 | LOCALE_SMONTHNAME7, LOCALE_SMONTHNAME8, LOCALE_SMONTHNAME9, | |
2519 | LOCALE_SMONTHNAME10, LOCALE_SMONTHNAME11, LOCALE_SMONTHNAME12 | |
2520 | }; | |
2521 | ||
2522 | static char *nl_langinfo_buf = NULL; | |
2523 | static int nl_langinfo_len = 0; | |
2524 | ||
2525 | if (nl_langinfo_len <= 0) | |
2526 | nl_langinfo_buf = xmalloc (nl_langinfo_len = 1); | |
2527 | ||
2528 | if (item < 0 || item >= _NL_NUM) | |
2529 | nl_langinfo_buf[0] = 0; | |
2530 | else | |
2531 | { | |
2532 | LCID cloc = GetThreadLocale (); | |
2533 | int need_len = GetLocaleInfo (cloc, w32item[item] | LOCALE_USE_CP_ACP, | |
2534 | NULL, 0); | |
2535 | ||
2536 | if (need_len <= 0) | |
2537 | nl_langinfo_buf[0] = 0; | |
2538 | else | |
2539 | { | |
2540 | if (item == CODESET) | |
2541 | { | |
2542 | need_len += 2; /* for the "cp" prefix */ | |
2543 | if (need_len < 8) /* for the case we call GetACP */ | |
2544 | need_len = 8; | |
2545 | } | |
2546 | if (nl_langinfo_len <= need_len) | |
2547 | nl_langinfo_buf = xrealloc (nl_langinfo_buf, | |
2548 | nl_langinfo_len = need_len); | |
2549 | if (!GetLocaleInfo (cloc, w32item[item] | LOCALE_USE_CP_ACP, | |
2550 | nl_langinfo_buf, nl_langinfo_len)) | |
2551 | nl_langinfo_buf[0] = 0; | |
2552 | else if (item == CODESET) | |
2553 | { | |
2554 | if (strcmp (nl_langinfo_buf, "0") == 0 /* CP_ACP */ | |
2555 | || strcmp (nl_langinfo_buf, "1") == 0) /* CP_OEMCP */ | |
2556 | sprintf (nl_langinfo_buf, "cp%u", GetACP ()); | |
2557 | else | |
2558 | { | |
2559 | memmove (nl_langinfo_buf + 2, nl_langinfo_buf, | |
2560 | strlen (nl_langinfo_buf) + 1); | |
2561 | nl_langinfo_buf[0] = 'c'; | |
2562 | nl_langinfo_buf[1] = 'p'; | |
2563 | } | |
2564 | } | |
2565 | } | |
2566 | } | |
2567 | return nl_langinfo_buf; | |
2568 | } | |
2569 | #endif /* HAVE_LANGINFO_CODESET */ | |
b2fc9f3d | 2570 | |
33f09670 JR |
2571 | DEFUN ("w32-get-locale-info", Fw32_get_locale_info, |
2572 | Sw32_get_locale_info, 1, 2, 0, | |
2573 | doc: /* Return information about the Windows locale LCID. | |
2574 | By default, return a three letter locale code which encodes the default | |
35f36d65 | 2575 | language as the first two characters, and the country or regional variant |
33f09670 JR |
2576 | as the third letter. For example, ENU refers to `English (United States)', |
2577 | while ENC means `English (Canadian)'. | |
2578 | ||
2579 | If the optional argument LONGFORM is t, the long form of the locale | |
2580 | name is returned, e.g. `English (United States)' instead; if LONGFORM | |
2581 | is a number, it is interpreted as an LCTYPE constant and the corresponding | |
2582 | locale information is returned. | |
2583 | ||
2584 | If LCID (a 16-bit number) is not a valid locale, the result is nil. */) | |
5842a27b | 2585 | (Lisp_Object lcid, Lisp_Object longform) |
b2fc9f3d GV |
2586 | { |
2587 | int got_abbrev; | |
2588 | int got_full; | |
2589 | char abbrev_name[32] = { 0 }; | |
2590 | char full_name[256] = { 0 }; | |
2591 | ||
b7826503 | 2592 | CHECK_NUMBER (lcid); |
b2fc9f3d GV |
2593 | |
2594 | if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED)) | |
2595 | return Qnil; | |
2596 | ||
2597 | if (NILP (longform)) | |
2598 | { | |
2599 | got_abbrev = GetLocaleInfo (XINT (lcid), | |
2600 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
2601 | abbrev_name, sizeof (abbrev_name)); | |
2602 | if (got_abbrev) | |
2603 | return build_string (abbrev_name); | |
2604 | } | |
0eaf5926 | 2605 | else if (EQ (longform, Qt)) |
b2fc9f3d GV |
2606 | { |
2607 | got_full = GetLocaleInfo (XINT (lcid), | |
2608 | LOCALE_SLANGUAGE | LOCALE_USE_CP_ACP, | |
2609 | full_name, sizeof (full_name)); | |
2610 | if (got_full) | |
011a0143 | 2611 | return DECODE_SYSTEM (build_string (full_name)); |
b2fc9f3d | 2612 | } |
0eaf5926 GV |
2613 | else if (NUMBERP (longform)) |
2614 | { | |
2615 | got_full = GetLocaleInfo (XINT (lcid), | |
2616 | XINT (longform), | |
2617 | full_name, sizeof (full_name)); | |
96512555 EZ |
2618 | /* GetLocaleInfo's return value includes the terminating null |
2619 | character, when the returned information is a string, whereas | |
2620 | make_unibyte_string needs the string length without the | |
2621 | terminating null. */ | |
0eaf5926 | 2622 | if (got_full) |
96512555 | 2623 | return make_unibyte_string (full_name, got_full - 1); |
0eaf5926 | 2624 | } |
b2fc9f3d GV |
2625 | |
2626 | return Qnil; | |
2627 | } | |
2628 | ||
2629 | ||
33f09670 JR |
2630 | DEFUN ("w32-get-current-locale-id", Fw32_get_current_locale_id, |
2631 | Sw32_get_current_locale_id, 0, 0, 0, | |
2632 | doc: /* Return Windows locale id for current locale setting. | |
2633 | This is a numerical value; use `w32-get-locale-info' to convert to a | |
2634 | human-readable form. */) | |
5842a27b | 2635 | (void) |
b2fc9f3d GV |
2636 | { |
2637 | return make_number (GetThreadLocale ()); | |
2638 | } | |
2639 | ||
24f981c9 | 2640 | static DWORD |
b56ceb92 | 2641 | int_from_hex (char * s) |
ef79fbba GV |
2642 | { |
2643 | DWORD val = 0; | |
2644 | static char hex[] = "0123456789abcdefABCDEF"; | |
2645 | char * p; | |
2646 | ||
ed3751c8 | 2647 | while (*s && (p = strchr (hex, *s)) != NULL) |
ef79fbba GV |
2648 | { |
2649 | unsigned digit = p - hex; | |
2650 | if (digit > 15) | |
2651 | digit -= 6; | |
2652 | val = val * 16 + digit; | |
2653 | s++; | |
2654 | } | |
2655 | return val; | |
2656 | } | |
2657 | ||
2658 | /* We need to build a global list, since the EnumSystemLocale callback | |
2659 | function isn't given a context pointer. */ | |
2660 | Lisp_Object Vw32_valid_locale_ids; | |
2661 | ||
24f981c9 | 2662 | static BOOL CALLBACK |
b56ceb92 | 2663 | enum_locale_fn (LPTSTR localeNum) |
ef79fbba GV |
2664 | { |
2665 | DWORD id = int_from_hex (localeNum); | |
2666 | Vw32_valid_locale_ids = Fcons (make_number (id), Vw32_valid_locale_ids); | |
2667 | return TRUE; | |
2668 | } | |
2669 | ||
33f09670 JR |
2670 | DEFUN ("w32-get-valid-locale-ids", Fw32_get_valid_locale_ids, |
2671 | Sw32_get_valid_locale_ids, 0, 0, 0, | |
2672 | doc: /* Return list of all valid Windows locale ids. | |
2673 | Each id is a numerical value; use `w32-get-locale-info' to convert to a | |
2674 | human-readable form. */) | |
5842a27b | 2675 | (void) |
ef79fbba GV |
2676 | { |
2677 | Vw32_valid_locale_ids = Qnil; | |
2678 | ||
2679 | EnumSystemLocales (enum_locale_fn, LCID_SUPPORTED); | |
2680 | ||
2681 | Vw32_valid_locale_ids = Fnreverse (Vw32_valid_locale_ids); | |
2682 | return Vw32_valid_locale_ids; | |
2683 | } | |
2684 | ||
b2fc9f3d GV |
2685 | |
2686 | DEFUN ("w32-get-default-locale-id", Fw32_get_default_locale_id, Sw32_get_default_locale_id, 0, 1, 0, | |
33f09670 JR |
2687 | doc: /* Return Windows locale id for default locale setting. |
2688 | By default, the system default locale setting is returned; if the optional | |
2689 | parameter USERP is non-nil, the user default locale setting is returned. | |
2690 | This is a numerical value; use `w32-get-locale-info' to convert to a | |
2691 | human-readable form. */) | |
5842a27b | 2692 | (Lisp_Object userp) |
b2fc9f3d GV |
2693 | { |
2694 | if (NILP (userp)) | |
2695 | return make_number (GetSystemDefaultLCID ()); | |
2696 | return make_number (GetUserDefaultLCID ()); | |
2697 | } | |
2698 | ||
177c0ea7 | 2699 | |
b2fc9f3d | 2700 | DEFUN ("w32-set-current-locale", Fw32_set_current_locale, Sw32_set_current_locale, 1, 1, 0, |
33f09670 JR |
2701 | doc: /* Make Windows locale LCID be the current locale setting for Emacs. |
2702 | If successful, the new locale id is returned, otherwise nil. */) | |
5842a27b | 2703 | (Lisp_Object lcid) |
b2fc9f3d | 2704 | { |
b7826503 | 2705 | CHECK_NUMBER (lcid); |
b2fc9f3d GV |
2706 | |
2707 | if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED)) | |
2708 | return Qnil; | |
2709 | ||
2710 | if (!SetThreadLocale (XINT (lcid))) | |
2711 | return Qnil; | |
2712 | ||
ef79fbba GV |
2713 | /* Need to set input thread locale if present. */ |
2714 | if (dwWindowsThreadId) | |
2715 | /* Reply is not needed. */ | |
2716 | PostThreadMessage (dwWindowsThreadId, WM_EMACS_SETLOCALE, XINT (lcid), 0); | |
2717 | ||
b2fc9f3d GV |
2718 | return make_number (GetThreadLocale ()); |
2719 | } | |
2720 | ||
0eaf5926 GV |
2721 | |
2722 | /* We need to build a global list, since the EnumCodePages callback | |
2723 | function isn't given a context pointer. */ | |
2724 | Lisp_Object Vw32_valid_codepages; | |
2725 | ||
24f981c9 | 2726 | static BOOL CALLBACK |
b56ceb92 | 2727 | enum_codepage_fn (LPTSTR codepageNum) |
0eaf5926 GV |
2728 | { |
2729 | DWORD id = atoi (codepageNum); | |
2730 | Vw32_valid_codepages = Fcons (make_number (id), Vw32_valid_codepages); | |
2731 | return TRUE; | |
2732 | } | |
2733 | ||
33f09670 JR |
2734 | DEFUN ("w32-get-valid-codepages", Fw32_get_valid_codepages, |
2735 | Sw32_get_valid_codepages, 0, 0, 0, | |
2736 | doc: /* Return list of all valid Windows codepages. */) | |
5842a27b | 2737 | (void) |
0eaf5926 GV |
2738 | { |
2739 | Vw32_valid_codepages = Qnil; | |
2740 | ||
2741 | EnumSystemCodePages (enum_codepage_fn, CP_SUPPORTED); | |
2742 | ||
2743 | Vw32_valid_codepages = Fnreverse (Vw32_valid_codepages); | |
2744 | return Vw32_valid_codepages; | |
2745 | } | |
2746 | ||
2747 | ||
33f09670 JR |
2748 | DEFUN ("w32-get-console-codepage", Fw32_get_console_codepage, |
2749 | Sw32_get_console_codepage, 0, 0, 0, | |
2750 | doc: /* Return current Windows codepage for console input. */) | |
5842a27b | 2751 | (void) |
0eaf5926 GV |
2752 | { |
2753 | return make_number (GetConsoleCP ()); | |
2754 | } | |
2755 | ||
177c0ea7 | 2756 | |
33f09670 JR |
2757 | DEFUN ("w32-set-console-codepage", Fw32_set_console_codepage, |
2758 | Sw32_set_console_codepage, 1, 1, 0, | |
62356a1b EZ |
2759 | doc: /* Make Windows codepage CP be the codepage for Emacs tty keyboard input. |
2760 | This codepage setting affects keyboard input in tty mode. | |
33f09670 | 2761 | If successful, the new CP is returned, otherwise nil. */) |
5842a27b | 2762 | (Lisp_Object cp) |
0eaf5926 | 2763 | { |
b7826503 | 2764 | CHECK_NUMBER (cp); |
0eaf5926 GV |
2765 | |
2766 | if (!IsValidCodePage (XINT (cp))) | |
2767 | return Qnil; | |
2768 | ||
2769 | if (!SetConsoleCP (XINT (cp))) | |
2770 | return Qnil; | |
2771 | ||
2772 | return make_number (GetConsoleCP ()); | |
2773 | } | |
2774 | ||
2775 | ||
33f09670 JR |
2776 | DEFUN ("w32-get-console-output-codepage", Fw32_get_console_output_codepage, |
2777 | Sw32_get_console_output_codepage, 0, 0, 0, | |
2778 | doc: /* Return current Windows codepage for console output. */) | |
5842a27b | 2779 | (void) |
0eaf5926 GV |
2780 | { |
2781 | return make_number (GetConsoleOutputCP ()); | |
2782 | } | |
2783 | ||
177c0ea7 | 2784 | |
33f09670 JR |
2785 | DEFUN ("w32-set-console-output-codepage", Fw32_set_console_output_codepage, |
2786 | Sw32_set_console_output_codepage, 1, 1, 0, | |
62356a1b EZ |
2787 | doc: /* Make Windows codepage CP be the codepage for Emacs console output. |
2788 | This codepage setting affects display in tty mode. | |
33f09670 | 2789 | If successful, the new CP is returned, otherwise nil. */) |
5842a27b | 2790 | (Lisp_Object cp) |
0eaf5926 | 2791 | { |
b7826503 | 2792 | CHECK_NUMBER (cp); |
0eaf5926 GV |
2793 | |
2794 | if (!IsValidCodePage (XINT (cp))) | |
2795 | return Qnil; | |
2796 | ||
2797 | if (!SetConsoleOutputCP (XINT (cp))) | |
2798 | return Qnil; | |
2799 | ||
2800 | return make_number (GetConsoleOutputCP ()); | |
2801 | } | |
2802 | ||
2803 | ||
33f09670 JR |
2804 | DEFUN ("w32-get-codepage-charset", Fw32_get_codepage_charset, |
2805 | Sw32_get_codepage_charset, 1, 1, 0, | |
62356a1b | 2806 | doc: /* Return charset ID corresponding to codepage CP. |
33f09670 | 2807 | Returns nil if the codepage is not valid. */) |
5842a27b | 2808 | (Lisp_Object cp) |
0eaf5926 GV |
2809 | { |
2810 | CHARSETINFO info; | |
2811 | ||
b7826503 | 2812 | CHECK_NUMBER (cp); |
0eaf5926 GV |
2813 | |
2814 | if (!IsValidCodePage (XINT (cp))) | |
2815 | return Qnil; | |
2816 | ||
2817 | if (TranslateCharsetInfo ((DWORD *) XINT (cp), &info, TCI_SRCCODEPAGE)) | |
2818 | return make_number (info.ciCharset); | |
2819 | ||
2820 | return Qnil; | |
2821 | } | |
2822 | ||
2823 | ||
33f09670 JR |
2824 | DEFUN ("w32-get-valid-keyboard-layouts", Fw32_get_valid_keyboard_layouts, |
2825 | Sw32_get_valid_keyboard_layouts, 0, 0, 0, | |
2826 | doc: /* Return list of Windows keyboard languages and layouts. | |
2827 | The return value is a list of pairs of language id and layout id. */) | |
5842a27b | 2828 | (void) |
0eaf5926 GV |
2829 | { |
2830 | int num_layouts = GetKeyboardLayoutList (0, NULL); | |
2831 | HKL * layouts = (HKL *) alloca (num_layouts * sizeof (HKL)); | |
2832 | Lisp_Object obj = Qnil; | |
2833 | ||
2834 | if (GetKeyboardLayoutList (num_layouts, layouts) == num_layouts) | |
2835 | { | |
2836 | while (--num_layouts >= 0) | |
2837 | { | |
2838 | DWORD kl = (DWORD) layouts[num_layouts]; | |
2839 | ||
2840 | obj = Fcons (Fcons (make_number (kl & 0xffff), | |
2841 | make_number ((kl >> 16) & 0xffff)), | |
2842 | obj); | |
2843 | } | |
2844 | } | |
2845 | ||
2846 | return obj; | |
2847 | } | |
2848 | ||
2849 | ||
33f09670 JR |
2850 | DEFUN ("w32-get-keyboard-layout", Fw32_get_keyboard_layout, |
2851 | Sw32_get_keyboard_layout, 0, 0, 0, | |
2852 | doc: /* Return current Windows keyboard language and layout. | |
2853 | The return value is the cons of the language id and the layout id. */) | |
5842a27b | 2854 | (void) |
0eaf5926 GV |
2855 | { |
2856 | DWORD kl = (DWORD) GetKeyboardLayout (dwWindowsThreadId); | |
2857 | ||
2858 | return Fcons (make_number (kl & 0xffff), | |
2859 | make_number ((kl >> 16) & 0xffff)); | |
2860 | } | |
2861 | ||
177c0ea7 | 2862 | |
33f09670 JR |
2863 | DEFUN ("w32-set-keyboard-layout", Fw32_set_keyboard_layout, |
2864 | Sw32_set_keyboard_layout, 1, 1, 0, | |
2865 | doc: /* Make LAYOUT be the current keyboard layout for Emacs. | |
2866 | The keyboard layout setting affects interpretation of keyboard input. | |
2867 | If successful, the new layout id is returned, otherwise nil. */) | |
5842a27b | 2868 | (Lisp_Object layout) |
0eaf5926 GV |
2869 | { |
2870 | DWORD kl; | |
2871 | ||
b7826503 | 2872 | CHECK_CONS (layout); |
f4532092 AI |
2873 | CHECK_NUMBER_CAR (layout); |
2874 | CHECK_NUMBER_CDR (layout); | |
0eaf5926 | 2875 | |
8e713be6 KR |
2876 | kl = (XINT (XCAR (layout)) & 0xffff) |
2877 | | (XINT (XCDR (layout)) << 16); | |
0eaf5926 GV |
2878 | |
2879 | /* Synchronize layout with input thread. */ | |
2880 | if (dwWindowsThreadId) | |
2881 | { | |
2882 | if (PostThreadMessage (dwWindowsThreadId, WM_EMACS_SETKEYBOARDLAYOUT, | |
2883 | (WPARAM) kl, 0)) | |
2884 | { | |
2885 | MSG msg; | |
2886 | GetMessage (&msg, NULL, WM_EMACS_DONE, WM_EMACS_DONE); | |
2887 | ||
2888 | if (msg.wParam == 0) | |
2889 | return Qnil; | |
2890 | } | |
2891 | } | |
2892 | else if (!ActivateKeyboardLayout ((HKL) kl, 0)) | |
2893 | return Qnil; | |
2894 | ||
2895 | return Fw32_get_keyboard_layout (); | |
2896 | } | |
2897 | ||
b2fc9f3d | 2898 | \f |
b56ceb92 JB |
2899 | void |
2900 | syms_of_ntproc (void) | |
93fdf2f8 | 2901 | { |
51128692 JR |
2902 | DEFSYM (Qhigh, "high"); |
2903 | DEFSYM (Qlow, "low"); | |
b2fc9f3d | 2904 | |
fbd6baed GV |
2905 | defsubr (&Sw32_has_winsock); |
2906 | defsubr (&Sw32_unload_winsock); | |
7d701334 | 2907 | |
b2fc9f3d GV |
2908 | defsubr (&Sw32_short_file_name); |
2909 | defsubr (&Sw32_long_file_name); | |
2910 | defsubr (&Sw32_set_process_priority); | |
2911 | defsubr (&Sw32_get_locale_info); | |
2912 | defsubr (&Sw32_get_current_locale_id); | |
2913 | defsubr (&Sw32_get_default_locale_id); | |
ef79fbba | 2914 | defsubr (&Sw32_get_valid_locale_ids); |
b2fc9f3d | 2915 | defsubr (&Sw32_set_current_locale); |
a11e68d0 | 2916 | |
0eaf5926 GV |
2917 | defsubr (&Sw32_get_console_codepage); |
2918 | defsubr (&Sw32_set_console_codepage); | |
2919 | defsubr (&Sw32_get_console_output_codepage); | |
2920 | defsubr (&Sw32_set_console_output_codepage); | |
2921 | defsubr (&Sw32_get_valid_codepages); | |
2922 | defsubr (&Sw32_get_codepage_charset); | |
2923 | ||
2924 | defsubr (&Sw32_get_valid_keyboard_layouts); | |
2925 | defsubr (&Sw32_get_keyboard_layout); | |
2926 | defsubr (&Sw32_set_keyboard_layout); | |
2927 | ||
29208e82 | 2928 | DEFVAR_LISP ("w32-quote-process-args", Vw32_quote_process_args, |
33f09670 JR |
2929 | doc: /* Non-nil enables quoting of process arguments to ensure correct parsing. |
2930 | Because Windows does not directly pass argv arrays to child processes, | |
2931 | programs have to reconstruct the argv array by parsing the command | |
2932 | line string. For an argument to contain a space, it must be enclosed | |
2933 | in double quotes or it will be parsed as multiple arguments. | |
2934 | ||
2935 | If the value is a character, that character will be used to escape any | |
2936 | quote characters that appear, otherwise a suitable escape character | |
2937 | will be chosen based on the type of the program. */); | |
b2fc9f3d | 2938 | Vw32_quote_process_args = Qt; |
817abdf6 | 2939 | |
fbd6baed | 2940 | DEFVAR_LISP ("w32-start-process-show-window", |
29208e82 | 2941 | Vw32_start_process_show_window, |
33f09670 JR |
2942 | doc: /* When nil, new child processes hide their windows. |
2943 | When non-nil, they show their window in the method of their choice. | |
2944 | This variable doesn't affect GUI applications, which will never be hidden. */); | |
fbd6baed | 2945 | Vw32_start_process_show_window = Qnil; |
0ecf7d36 | 2946 | |
b2fc9f3d | 2947 | DEFVAR_LISP ("w32-start-process-share-console", |
29208e82 | 2948 | Vw32_start_process_share_console, |
33f09670 JR |
2949 | doc: /* When nil, new child processes are given a new console. |
2950 | When non-nil, they share the Emacs console; this has the limitation of | |
804d894a | 2951 | allowing only one DOS subprocess to run at a time (whether started directly |
33f09670 JR |
2952 | or indirectly by Emacs), and preventing Emacs from cleanly terminating the |
2953 | subprocess group, but may allow Emacs to interrupt a subprocess that doesn't | |
2954 | otherwise respond to interrupts from Emacs. */); | |
b2fc9f3d GV |
2955 | Vw32_start_process_share_console = Qnil; |
2956 | ||
82e7c0a9 | 2957 | DEFVAR_LISP ("w32-start-process-inherit-error-mode", |
29208e82 | 2958 | Vw32_start_process_inherit_error_mode, |
33f09670 JR |
2959 | doc: /* When nil, new child processes revert to the default error mode. |
2960 | When non-nil, they inherit their error mode setting from Emacs, which stops | |
2961 | them blocking when trying to access unmounted drives etc. */); | |
82e7c0a9 AI |
2962 | Vw32_start_process_inherit_error_mode = Qt; |
2963 | ||
29208e82 | 2964 | DEFVAR_INT ("w32-pipe-read-delay", w32_pipe_read_delay, |
33f09670 JR |
2965 | doc: /* Forced delay before reading subprocess output. |
2966 | This is done to improve the buffering of subprocess output, by | |
2967 | avoiding the inefficiency of frequently reading small amounts of data. | |
2968 | ||
2969 | If positive, the value is the number of milliseconds to sleep before | |
2970 | reading the subprocess output. If negative, the magnitude is the number | |
2971 | of time slices to wait (effectively boosting the priority of the child | |
2972 | process temporarily). A value of zero disables waiting entirely. */); | |
5322f50b | 2973 | w32_pipe_read_delay = 50; |
0c04091e | 2974 | |
29208e82 | 2975 | DEFVAR_LISP ("w32-downcase-file-names", Vw32_downcase_file_names, |
33f09670 JR |
2976 | doc: /* Non-nil means convert all-upper case file names to lower case. |
2977 | This applies when performing completions and file name expansion. | |
2978 | Note that the value of this setting also affects remote file names, | |
2979 | so you probably don't want to set to non-nil if you use case-sensitive | |
177c0ea7 | 2980 | filesystems via ange-ftp. */); |
fbd6baed | 2981 | Vw32_downcase_file_names = Qnil; |
b2fc9f3d GV |
2982 | |
2983 | #if 0 | |
29208e82 | 2984 | DEFVAR_LISP ("w32-generate-fake-inodes", Vw32_generate_fake_inodes, |
33f09670 JR |
2985 | doc: /* Non-nil means attempt to fake realistic inode values. |
2986 | This works by hashing the truename of files, and should detect | |
2987 | aliasing between long and short (8.3 DOS) names, but can have | |
4c36be58 | 2988 | false positives because of hash collisions. Note that determining |
33f09670 | 2989 | the truename of a file can be slow. */); |
b2fc9f3d GV |
2990 | Vw32_generate_fake_inodes = Qnil; |
2991 | #endif | |
2992 | ||
29208e82 | 2993 | DEFVAR_LISP ("w32-get-true-file-attributes", Vw32_get_true_file_attributes, |
ed4c17bb EZ |
2994 | doc: /* Non-nil means determine accurate file attributes in `file-attributes'. |
2995 | This option controls whether to issue additional system calls to determine | |
017dab84 | 2996 | accurate link counts, file type, and ownership information. It is more |
ed4c17bb | 2997 | useful for files on NTFS volumes, where hard links and file security are |
017dab84 | 2998 | supported, than on volumes of the FAT family. |
ed4c17bb EZ |
2999 | |
3000 | Without these system calls, link count will always be reported as 1 and file | |
3001 | ownership will be attributed to the current user. | |
3002 | The default value `local' means only issue these system calls for files | |
3003 | on local fixed drives. A value of nil means never issue them. | |
3004 | Any other non-nil value means do this even on remote and removable drives | |
3005 | where the performance impact may be noticeable even on modern hardware. */); | |
2fa4f090 | 3006 | Vw32_get_true_file_attributes = Qlocal; |
af621bc3 EZ |
3007 | |
3008 | staticpro (&Vw32_valid_locale_ids); | |
3009 | staticpro (&Vw32_valid_codepages); | |
93fdf2f8 | 3010 | } |
42a7e7f1 | 3011 | /* end of w32proc.c */ |