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