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"
49 #include "libguile/environments.h"
50 #include "libguile/eq.h"
51 #include "libguile/error.h"
52 #include "libguile/eval.h"
53 #include "libguile/evalext.h"
54 #include "libguile/feature.h"
55 #include "libguile/filesys.h"
56 #include "libguile/fluids.h"
57 #include "libguile/fports.h"
58 #include "libguile/futures.h"
59 #include "libguile/gc.h"
60 #include "libguile/gdbint.h"
61 #include "libguile/goops.h"
62 #include "libguile/gsubr.h"
63 #include "libguile/hash.h"
64 #include "libguile/hashtab.h"
65 #include "libguile/hooks.h"
66 #include "libguile/i18n.h"
67 #include "libguile/iselect.h"
68 #include "libguile/ioext.h"
69 #include "libguile/keywords.h"
70 #include "libguile/lang.h"
71 #include "libguile/list.h"
72 #include "libguile/load.h"
73 #include "libguile/macros.h"
74 #include "libguile/mallocs.h"
75 #include "libguile/modules.h"
76 #include "libguile/net_db.h"
77 #include "libguile/numbers.h"
78 #include "libguile/objects.h"
79 #include "libguile/objprop.h"
80 #include "libguile/options.h"
81 #include "libguile/pairs.h"
82 #include "libguile/ports.h"
83 #include "libguile/posix.h"
85 #include "libguile/regex-posix.h"
87 #include "libguile/print.h"
88 #include "libguile/procprop.h"
89 #include "libguile/procs.h"
90 #include "libguile/properties.h"
91 #include "libguile/ramap.h"
92 #include "libguile/random.h"
93 #include "libguile/rdelim.h"
94 #include "libguile/read.h"
95 #include "libguile/rw.h"
96 #include "libguile/scmsigs.h"
97 #include "libguile/script.h"
98 #include "libguile/simpos.h"
99 #include "libguile/smob.h"
100 #include "libguile/socket.h"
101 #include "libguile/sort.h"
102 #include "libguile/srcprop.h"
103 #include "libguile/stackchk.h"
104 #include "libguile/stacks.h"
105 #include "libguile/stime.h"
106 #include "libguile/strings.h"
107 #include "libguile/srfi-13.h"
108 #include "libguile/srfi-14.h"
109 #include "libguile/strorder.h"
110 #include "libguile/strports.h"
111 #include "libguile/struct.h"
112 #include "libguile/symbols.h"
113 #include "libguile/throw.h"
114 #include "libguile/unif.h"
115 #include "libguile/values.h"
116 #include "libguile/variable.h"
117 #include "libguile/vectors.h"
118 #include "libguile/version.h"
119 #include "libguile/vports.h"
120 #include "libguile/weaks.h"
121 #include "libguile/guardians.h"
122 #include "libguile/extensions.h"
123 #include "libguile/srfi-4.h"
124 #include "libguile/discouraged.h"
125 #include "libguile/deprecated.h"
127 #include "libguile/init.h"
139 static char remsg[] = "remove\n#define ", addmsg[] = "add\n#define ";
143 fixconfig (char *s1, char *s2, int s)
147 fputs ("\nin ", stderr);
148 fputs (s ? "setjump" : "scmfig", stderr);
149 fputs (".h and recompile scm\n", stderr);
160 if (HEAP_SEG_SIZE != j)
161 fixconfig ("reduce", "size of HEAP_SEG_SIZE", 0);
163 #if SCM_STACK_GROWS_UP
164 if (((SCM_STACKITEM *) & j - stack_start_ptr) < 0)
165 fixconfig (remsg, "SCM_STACK_GROWS_UP", 1);
167 if ((stack_start_ptr - (SCM_STACKITEM *) & j) < 0)
168 fixconfig (addmsg, "SCM_STACK_GROWS_UP", 1);
175 /* initializing standard and current I/O ports */
184 /* proc to be called in scope of exception handler stream_handler. */
186 stream_body (void *data)
188 stream_body_data *body_data = (stream_body_data *) data;
189 SCM port = scm_fdes_to_port (body_data->fdes, body_data->mode,
190 scm_from_locale_string (body_data->name));
192 SCM_REVEALED (port) = 1;
196 /* exception handler for stream_body. */
198 stream_handler (void *data SCM_UNUSED,
200 SCM throw_args SCM_UNUSED)
205 /* Convert a file descriptor to a port, using scm_fdes_to_port.
206 - NAME is a C string, not a Guile string
207 - set the revealed count for FILE's file descriptor to 1, so
208 that fdes won't be closed when the port object is GC'd.
209 - catch exceptions: allow Guile to be able to start up even
210 if it has been handed bogus stdin/stdout/stderr. replace the
211 bad ports with void ports. */
213 scm_standard_stream_to_port (int fdes, char *mode, char *name)
216 stream_body_data body_data;
218 body_data.fdes = fdes;
219 body_data.mode = mode;
220 body_data.name = name;
221 port = scm_internal_catch (SCM_BOOL_T, stream_body, &body_data,
222 stream_handler, NULL);
223 if (scm_is_false (port))
224 port = scm_void_port (mode);
228 /* Create standard ports from stdin, stdout, and stderr. */
230 scm_init_standard_ports ()
232 /* From the SCSH manual:
234 It can be useful to turn I/O buffering off in some cases, for
235 example when an I/O stream is to be shared by multiple
236 subprocesses. For this reason, scsh allocates an unbuffered port
237 for file descriptor 0 at start-up time.
239 Because shells frequently share stdin with subprocesses, if the
240 shell does buffered reads, it might ``steal'' input intended for
241 a subprocess. For this reason, all shells, including sh, csh,
242 and scsh, read stdin unbuffered. Applications that can tolerate
243 buffered input on stdin can reset \ex{(current-input-port)} to
244 block buffering for higher performance. */
246 scm_set_current_input_port
247 (scm_standard_stream_to_port (0,
248 isatty (0) ? "r0" : "r",
250 scm_set_current_output_port
251 (scm_standard_stream_to_port (1,
252 isatty (1) ? "w0" : "w",
254 scm_set_current_error_port
255 (scm_standard_stream_to_port (2,
256 isatty (2) ? "w0" : "w",
262 /* Loading the startup Scheme files. */
264 /* The boot code "ice-9/boot-9" is only loaded by scm_boot_guile when
265 this is false. The unexec code uses this, to keep ice_9 from being
266 loaded into dumped guile executables. */
267 int scm_ice_9_already_loaded = 0;
270 scm_load_startup_files ()
272 /* We want a path only containing directories from GUILE_LOAD_PATH,
273 SCM_SITE_DIR and SCM_LIBRARY_DIR when searching for the site init
274 file, so we do this before loading Ice-9. */
276 scm_sys_search_load_path (scm_from_locale_string ("init.scm"));
279 if (!scm_ice_9_already_loaded)
281 scm_primitive_load_path (scm_from_locale_string ("ice-9/boot-9.scm"));
283 /* Load the init.scm file. */
284 if (scm_is_true (init_path))
285 scm_primitive_load (init_path);
290 /* The main init code. */
293 typedef int setjmp_type;
295 typedef long setjmp_type;
298 /* All the data needed to invoke the main function. */
299 struct main_func_closure
301 /* the function to call */
302 void (*main_func)(void *closure, int argc, char **argv);
303 void *closure; /* dummy data to pass it */
305 char **argv; /* the argument list it should receive */
308 static void *invoke_main_func(void *body_data);
311 /* Fire up the Guile Scheme interpreter.
313 Call MAIN_FUNC, passing it CLOSURE, ARGC, and ARGV. MAIN_FUNC
314 should do all the work of the program (initializing other packages,
315 reading user input, etc.) before returning. When MAIN_FUNC
316 returns, call exit (0); this function never returns. If you want
317 some other exit value, MAIN_FUNC may call exit itself.
319 scm_boot_guile arranges for program-arguments to return the strings
320 given by ARGC and ARGV. If MAIN_FUNC modifies ARGC/ARGV, should
321 call scm_set_program_arguments with the final list, so Scheme code
322 will know which arguments have been processed.
324 scm_boot_guile establishes a catch-all catch handler which prints
325 an error message and exits the process. This means that Guile
326 exits in a coherent way when system errors occur and the user isn't
327 prepared to handle it. If the user doesn't like this behavior,
328 they can establish their own universal catcher to shadow this one.
330 Why must the caller do all the real work from MAIN_FUNC? The
331 garbage collector assumes that all local variables of type SCM will
332 be above scm_boot_guile's stack frame on the stack. If you try to
333 manipulate SCM values after this function returns, it's the luck of
334 the draw whether the GC will be able to find the objects you
335 allocate. So, scm_boot_guile function exits, rather than
336 returning, to discourage people from making that mistake. */
340 scm_boot_guile (int argc, char ** argv, void (*main_func) (), void *closure)
343 struct main_func_closure c;
345 c.main_func = main_func;
350 res = scm_with_guile (invoke_main_func, &c);
352 /* If the caller doesn't want this, they should exit from main_func
362 invoke_main_func (void *body_data)
364 struct main_func_closure *closure = (struct main_func_closure *) body_data;
366 scm_set_program_arguments (closure->argc, closure->argv, 0);
367 (*closure->main_func) (closure->closure, closure->argc, closure->argv);
369 scm_restore_signals ();
371 /* This tick gives any pending
372 * asyncs a chance to run. This must be done after
373 * the call to scm_restore_signals.
377 /* Indicate success by returning non-NULL.
382 scm_i_pthread_mutex_t scm_i_init_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER;
383 int scm_initialized_p = 0;
386 really_cleanup_for_exit (void *unused)
388 scm_flush_all_ports ();
395 /* This function might be called in non-guile mode, so we need to
396 enter it temporarily.
398 scm_with_guile (really_cleanup_for_exit, NULL);
402 scm_i_init_guile (SCM_STACKITEM *base)
404 if (scm_initialized_p)
409 fprintf (stderr, "cannot determine stack base!\n");
413 if (sizeof (mpz_t) > (3 * sizeof (scm_t_bits)))
416 "GMP's mpz_t must fit into a double_cell,"
417 "but doesn't seem to here.\n");
420 scm_storage_prehistory ();
421 scm_threads_prehistory (base);
422 scm_ports_prehistory ();
423 scm_smob_prehistory ();
424 scm_fluids_prehistory ();
425 scm_hashtab_prehistory (); /* requires storage_prehistory */
426 #ifdef GUILE_DEBUG_MALLOC
427 scm_debug_malloc_prehistory ();
429 if (scm_init_storage ()) /* requires threads_prehistory,
431 hashtab_prehistory */
434 scm_struct_prehistory (); /* requires storage */
435 scm_symbols_prehistory (); /* requires storage */
436 scm_init_subr_table ();
437 scm_environments_prehistory (); /* requires storage */
438 scm_modules_prehistory (); /* requires storage and hash tables */
439 scm_init_variable (); /* all bindings need variables */
440 scm_init_continuations ();
441 scm_init_root (); /* requires continuations */
442 scm_init_threads (); /* requires fluids */
444 scm_init_thread_procs (); /* requires gsubrs */
445 scm_init_procprop ();
446 scm_init_environments ();
448 scm_init_arbiters ();
452 #ifdef GUILE_DEBUG_MALLOC
453 scm_init_debug_malloc ();
459 /* See futures.h for a comment why futures are not enabled.
464 scm_init_feature (); /* Requires fluids */
465 scm_init_backtrace (); /* Requires fluids */
467 scm_init_strports ();
468 scm_init_gdbint (); /* Requires strports */
471 scm_init_deprecation (); /* Requires hashtabs */
473 scm_init_properties ();
474 scm_init_hooks (); /* Requires smob_prehistory */
475 scm_init_gc (); /* Requires hooks, async */
478 scm_init_keywords ();
492 scm_init_regex_posix ();
496 #ifdef HAVE_NETWORKING
502 scm_init_stackchk ();
504 scm_init_struct (); /* Requires strings */
505 scm_init_stacks (); /* Requires strings, struct */
507 scm_init_values (); /* Requires struct */
508 scm_init_load (); /* Requires strings */
509 scm_init_objects (); /* Requires struct */
510 scm_init_print (); /* Requires strings, struct */
513 scm_init_strorder ();
520 scm_init_guardians ();
524 scm_init_debug (); /* Requires macro smobs */
529 scm_init_load_path ();
530 scm_init_standard_ports (); /* Requires fports */
531 scm_init_dynamic_linking ();
534 #endif /* SCM_ENABLE_ELISP */
540 #if SCM_ENABLE_DISCOURAGED == 1
541 scm_i_init_discouraged ();
544 #if SCM_ENABLE_DEPRECATED == 1
545 scm_i_init_deprecated ();
548 scm_init_threads_default_dynamic_state ();
550 scm_initialized_p = 1;
552 #ifdef STACK_CHECKING
553 scm_stack_checking_enabled_p = SCM_STACK_CHECKING_P;
558 scm_init_extensions ();
560 atexit (cleanup_for_exit);
561 scm_load_startup_files ();