1 /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
3 * This library is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU Lesser General Public
5 * License as published by the Free Software Foundation; either
6 * version 2.1 of the License, or (at your option) any later version.
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * Lesser General Public License for more details.
13 * You should have received a copy of the GNU Lesser General Public
14 * License along with this library; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 /* Include the headers for just about everything.
21 We call all their initialization functions. */
32 #include "libguile/_scm.h"
34 /* Everybody has an init function. */
35 #include "libguile/alist.h"
36 #include "libguile/arbiters.h"
37 #include "libguile/async.h"
38 #include "libguile/backtrace.h"
39 #include "libguile/boolean.h"
40 #include "libguile/chars.h"
41 #include "libguile/continuations.h"
42 #include "libguile/debug.h"
43 #ifdef GUILE_DEBUG_MALLOC
44 #include "libguile/debug-malloc.h"
46 #include "libguile/deprecation.h"
47 #include "libguile/dynl.h"
48 #include "libguile/dynwind.h"
50 #include "libguile/environments.h"
52 #include "libguile/eq.h"
53 #include "libguile/error.h"
54 #include "libguile/eval.h"
55 #include "libguile/evalext.h"
56 #include "libguile/feature.h"
57 #include "libguile/filesys.h"
58 #include "libguile/fluids.h"
59 #include "libguile/fports.h"
60 #include "libguile/futures.h"
61 #include "libguile/gc.h"
62 #include "libguile/gdbint.h"
63 #include "libguile/goops.h"
64 #include "libguile/gsubr.h"
65 #include "libguile/hash.h"
66 #include "libguile/hashtab.h"
67 #include "libguile/hooks.h"
68 #include "libguile/gettext.h"
69 #include "libguile/iselect.h"
70 #include "libguile/ioext.h"
71 #include "libguile/keywords.h"
72 #include "libguile/lang.h"
73 #include "libguile/list.h"
74 #include "libguile/load.h"
75 #include "libguile/macros.h"
76 #include "libguile/mallocs.h"
77 #include "libguile/modules.h"
78 #include "libguile/net_db.h"
79 #include "libguile/numbers.h"
80 #include "libguile/objects.h"
81 #include "libguile/objprop.h"
82 #include "libguile/options.h"
83 #include "libguile/pairs.h"
84 #include "libguile/ports.h"
85 #include "libguile/posix.h"
87 #include "libguile/regex-posix.h"
89 #include "libguile/print.h"
90 #include "libguile/procprop.h"
91 #include "libguile/procs.h"
92 #include "libguile/properties.h"
93 #include "libguile/ramap.h"
94 #include "libguile/random.h"
95 #include "libguile/rdelim.h"
96 #include "libguile/read.h"
97 #include "libguile/rw.h"
98 #include "libguile/scmsigs.h"
99 #include "libguile/script.h"
100 #include "libguile/simpos.h"
101 #include "libguile/smob.h"
102 #include "libguile/socket.h"
103 #include "libguile/sort.h"
104 #include "libguile/srcprop.h"
105 #include "libguile/stackchk.h"
106 #include "libguile/stacks.h"
107 #include "libguile/stime.h"
108 #include "libguile/strings.h"
109 #include "libguile/srfi-13.h"
110 #include "libguile/srfi-14.h"
111 #include "libguile/strorder.h"
112 #include "libguile/strports.h"
113 #include "libguile/struct.h"
114 #include "libguile/symbols.h"
115 #include "libguile/throw.h"
116 #include "libguile/unif.h"
117 #include "libguile/values.h"
118 #include "libguile/variable.h"
119 #include "libguile/vectors.h"
120 #include "libguile/version.h"
121 #include "libguile/vports.h"
122 #include "libguile/weaks.h"
123 #include "libguile/guardians.h"
124 #include "libguile/extensions.h"
125 #include "libguile/srfi-4.h"
126 #include "libguile/discouraged.h"
127 #include "libguile/deprecated.h"
129 #include "libguile/init.h"
130 #include "libguile/private-options.h"
142 static char remsg
[] = "remove\n#define ", addmsg
[] = "add\n#define ";
146 fixconfig (char *s1
, char *s2
, int s
)
150 fputs ("\nin ", stderr
);
151 fputs (s
? "setjump" : "scmfig", stderr
);
152 fputs (".h and recompile scm\n", stderr
);
163 if (HEAP_SEG_SIZE
!= j
)
164 fixconfig ("reduce", "size of HEAP_SEG_SIZE", 0);
166 #if SCM_STACK_GROWS_UP
167 if (((SCM_STACKITEM
*) & j
- stack_start_ptr
) < 0)
168 fixconfig (remsg
, "SCM_STACK_GROWS_UP", 1);
170 if ((stack_start_ptr
- (SCM_STACKITEM
*) & j
) < 0)
171 fixconfig (addmsg
, "SCM_STACK_GROWS_UP", 1);
178 /* initializing standard and current I/O ports */
187 /* proc to be called in scope of exception handler stream_handler. */
189 stream_body (void *data
)
191 stream_body_data
*body_data
= (stream_body_data
*) data
;
192 SCM port
= scm_fdes_to_port (body_data
->fdes
, body_data
->mode
,
193 scm_from_locale_string (body_data
->name
));
195 SCM_REVEALED (port
) = 1;
199 /* exception handler for stream_body. */
201 stream_handler (void *data SCM_UNUSED
,
203 SCM throw_args SCM_UNUSED
)
208 /* Convert a file descriptor to a port, using scm_fdes_to_port.
209 - NAME is a C string, not a Guile string
210 - set the revealed count for FILE's file descriptor to 1, so
211 that fdes won't be closed when the port object is GC'd.
212 - catch exceptions: allow Guile to be able to start up even
213 if it has been handed bogus stdin/stdout/stderr. replace the
214 bad ports with void ports. */
216 scm_standard_stream_to_port (int fdes
, char *mode
, char *name
)
219 stream_body_data body_data
;
221 body_data
.fdes
= fdes
;
222 body_data
.mode
= mode
;
223 body_data
.name
= name
;
224 port
= scm_internal_catch (SCM_BOOL_T
, stream_body
, &body_data
,
225 stream_handler
, NULL
);
226 if (scm_is_false (port
))
227 port
= scm_void_port (mode
);
231 /* Create standard ports from stdin, stdout, and stderr. */
233 scm_init_standard_ports ()
235 /* From the SCSH manual:
237 It can be useful to turn I/O buffering off in some cases, for
238 example when an I/O stream is to be shared by multiple
239 subprocesses. For this reason, scsh allocates an unbuffered port
240 for file descriptor 0 at start-up time.
242 Because shells frequently share stdin with subprocesses, if the
243 shell does buffered reads, it might ``steal'' input intended for
244 a subprocess. For this reason, all shells, including sh, csh,
245 and scsh, read stdin unbuffered. Applications that can tolerate
246 buffered input on stdin can reset \ex{(current-input-port)} to
247 block buffering for higher performance. */
249 scm_set_current_input_port
250 (scm_standard_stream_to_port (0,
251 isatty (0) ? "r0" : "r",
253 scm_set_current_output_port
254 (scm_standard_stream_to_port (1,
255 isatty (1) ? "w0" : "w",
257 scm_set_current_error_port
258 (scm_standard_stream_to_port (2,
259 isatty (2) ? "w0" : "w",
265 /* Loading the startup Scheme files. */
267 /* The boot code "ice-9/boot-9" is only loaded by scm_boot_guile when
268 this is false. The unexec code uses this, to keep ice_9 from being
269 loaded into dumped guile executables. */
270 int scm_ice_9_already_loaded
= 0;
273 scm_load_startup_files ()
275 /* We want a path only containing directories from GUILE_LOAD_PATH,
276 SCM_SITE_DIR and SCM_LIBRARY_DIR when searching for the site init
277 file, so we do this before loading Ice-9. */
279 scm_sys_search_load_path (scm_from_locale_string ("init.scm"));
282 if (!scm_ice_9_already_loaded
)
284 scm_primitive_load_path (scm_from_locale_string ("ice-9/boot-9.scm"));
286 /* Load the init.scm file. */
287 if (scm_is_true (init_path
))
288 scm_primitive_load (init_path
);
293 /* The main init code. */
296 typedef int setjmp_type
;
298 typedef long setjmp_type
;
301 /* All the data needed to invoke the main function. */
302 struct main_func_closure
304 /* the function to call */
305 void (*main_func
)(void *closure
, int argc
, char **argv
);
306 void *closure
; /* dummy data to pass it */
308 char **argv
; /* the argument list it should receive */
311 static void *invoke_main_func(void *body_data
);
314 /* Fire up the Guile Scheme interpreter.
316 Call MAIN_FUNC, passing it CLOSURE, ARGC, and ARGV. MAIN_FUNC
317 should do all the work of the program (initializing other packages,
318 reading user input, etc.) before returning. When MAIN_FUNC
319 returns, call exit (0); this function never returns. If you want
320 some other exit value, MAIN_FUNC may call exit itself.
322 scm_boot_guile arranges for program-arguments to return the strings
323 given by ARGC and ARGV. If MAIN_FUNC modifies ARGC/ARGV, should
324 call scm_set_program_arguments with the final list, so Scheme code
325 will know which arguments have been processed.
327 scm_boot_guile establishes a catch-all catch handler which prints
328 an error message and exits the process. This means that Guile
329 exits in a coherent way when system errors occur and the user isn't
330 prepared to handle it. If the user doesn't like this behavior,
331 they can establish their own universal catcher to shadow this one.
333 Why must the caller do all the real work from MAIN_FUNC? The
334 garbage collector assumes that all local variables of type SCM will
335 be above scm_boot_guile's stack frame on the stack. If you try to
336 manipulate SCM values after this function returns, it's the luck of
337 the draw whether the GC will be able to find the objects you
338 allocate. So, scm_boot_guile function exits, rather than
339 returning, to discourage people from making that mistake. */
343 scm_boot_guile (int argc
, char ** argv
, void (*main_func
) (), void *closure
)
346 struct main_func_closure c
;
348 c
.main_func
= main_func
;
353 res
= scm_with_guile (invoke_main_func
, &c
);
355 /* If the caller doesn't want this, they should exit from main_func
365 invoke_main_func (void *body_data
)
367 struct main_func_closure
*closure
= (struct main_func_closure
*) body_data
;
369 scm_set_program_arguments (closure
->argc
, closure
->argv
, 0);
370 (*closure
->main_func
) (closure
->closure
, closure
->argc
, closure
->argv
);
372 scm_restore_signals ();
374 /* This tick gives any pending
375 * asyncs a chance to run. This must be done after
376 * the call to scm_restore_signals.
380 /* Indicate success by returning non-NULL.
385 scm_i_pthread_mutex_t scm_i_init_mutex
= SCM_I_PTHREAD_MUTEX_INITIALIZER
;
386 int scm_initialized_p
= 0;
389 really_cleanup_for_exit (void *unused
)
391 scm_flush_all_ports ();
398 if (scm_i_pthread_mutex_trylock (&scm_i_init_mutex
) == 0)
399 scm_i_pthread_mutex_unlock (&scm_i_init_mutex
);
402 fprintf (stderr
, "Cannot exit gracefully when init is in progress; aborting.\n");
406 /* This function might be called in non-guile mode, so we need to
407 enter it temporarily.
409 scm_with_guile (really_cleanup_for_exit
, NULL
);
413 scm_i_init_guile (SCM_STACKITEM
*base
)
415 if (scm_initialized_p
)
420 fprintf (stderr
, "cannot determine stack base!\n");
424 if (sizeof (mpz_t
) > (3 * sizeof (scm_t_bits
)))
427 "GMP's mpz_t must fit into a double_cell,"
428 "but doesn't seem to here.\n");
431 scm_storage_prehistory ();
432 scm_threads_prehistory (base
);
433 scm_ports_prehistory ();
434 scm_smob_prehistory ();
435 scm_fluids_prehistory ();
436 scm_weaks_prehistory ();
437 scm_hashtab_prehistory (); /* requires storage_prehistory, and
439 #ifdef GUILE_DEBUG_MALLOC
440 scm_debug_malloc_prehistory ();
442 if (scm_init_storage ()) /* requires threads_prehistory,
444 hashtab_prehistory */
447 scm_struct_prehistory (); /* requires storage */
448 scm_symbols_prehistory (); /* requires storage */
449 scm_init_subr_table ();
451 scm_environments_prehistory (); /* requires storage */
453 scm_modules_prehistory (); /* requires storage and hash tables */
454 scm_init_variable (); /* all bindings need variables */
455 scm_init_continuations ();
456 scm_init_root (); /* requires continuations */
457 scm_init_threads (); /* requires fluids */
459 scm_init_thread_procs (); /* requires gsubrs */
460 scm_init_procprop ();
462 scm_init_environments ();
465 scm_init_arbiters ();
469 #ifdef GUILE_DEBUG_MALLOC
470 scm_init_debug_malloc ();
476 /* See futures.h for a comment why futures are not enabled.
481 scm_init_feature (); /* Requires fluids */
482 scm_init_backtrace (); /* Requires fluids */
484 scm_init_strports ();
486 scm_init_gdbint (); /* Requires strports */
489 scm_init_deprecation (); /* Requires hashtabs */
491 scm_init_properties ();
492 scm_init_hooks (); /* Requires smob_prehistory */
493 scm_init_gc (); /* Requires hooks, async */
496 scm_init_keywords ();
509 scm_init_regex_posix ();
513 #ifdef HAVE_NETWORKING
519 scm_init_stackchk ();
521 scm_init_struct (); /* Requires strings */
522 scm_init_stacks (); /* Requires strings, struct */
524 scm_init_values (); /* Requires struct */
525 scm_init_load (); /* Requires strings */
526 scm_init_objects (); /* Requires struct */
527 scm_init_print (); /* Requires strings, struct */
530 scm_init_strorder ();
537 scm_init_guardians ();
541 scm_init_debug (); /* Requires macro smobs */
546 scm_init_load_path ();
547 scm_init_standard_ports (); /* Requires fports */
548 scm_init_dynamic_linking ();
551 #endif /* SCM_ENABLE_ELISP */
557 #if SCM_ENABLE_DISCOURAGED == 1
558 scm_i_init_discouraged ();
561 #if SCM_ENABLE_DEPRECATED == 1
562 scm_i_init_deprecated ();
565 scm_init_threads_default_dynamic_state ();
567 scm_initialized_p
= 1;
569 #ifdef STACK_CHECKING
570 scm_stack_checking_enabled_p
= SCM_STACK_CHECKING_P
;
575 scm_init_extensions ();
577 atexit (cleanup_for_exit
);
578 scm_load_startup_files ();