1 /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2004 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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. */
247 = scm_standard_stream_to_port (0,
248 isatty (0) ? "r0" : "r",
250 scm_cur_outp
= scm_standard_stream_to_port (1,
251 isatty (1) ? "w0" : "w",
253 scm_cur_errp
= scm_standard_stream_to_port (2,
254 isatty (2) ? "w0" : "w",
257 scm_cur_loadp
= SCM_BOOL_F
;
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 scm_boot_guile_1 (SCM_STACKITEM
*base
,
309 struct main_func_closure
*closure
);
310 static void *invoke_main_func(void *body_data
);
313 /* Fire up the Guile Scheme interpreter.
315 Call MAIN_FUNC, passing it CLOSURE, ARGC, and ARGV. MAIN_FUNC
316 should do all the work of the program (initializing other packages,
317 reading user input, etc.) before returning. When MAIN_FUNC
318 returns, call exit (0); this function never returns. If you want
319 some other exit value, MAIN_FUNC may call exit itself.
321 scm_boot_guile arranges for program-arguments to return the strings
322 given by ARGC and ARGV. If MAIN_FUNC modifies ARGC/ARGV, should
323 call scm_set_program_arguments with the final list, so Scheme code
324 will know which arguments have been processed.
326 scm_boot_guile establishes a catch-all catch handler which prints
327 an error message and exits the process. This means that Guile
328 exits in a coherent way when system errors occur and the user isn't
329 prepared to handle it. If the user doesn't like this behavior,
330 they can establish their own universal catcher to shadow this one.
332 Why must the caller do all the real work from MAIN_FUNC? The
333 garbage collector assumes that all local variables of type SCM will
334 be above scm_boot_guile's stack frame on the stack. If you try to
335 manipulate SCM values after this function returns, it's the luck of
336 the draw whether the GC will be able to find the objects you
337 allocate. So, scm_boot_guile function exits, rather than
338 returning, to discourage people from making that mistake. */
342 scm_boot_guile (int argc
, char ** argv
, void (*main_func
) (), void *closure
)
344 struct main_func_closure c
;
346 c
.main_func
= main_func
;
351 scm_with_guile (invoke_main_func
, &c
);
355 invoke_main_func (void *body_data
)
357 struct main_func_closure
*closure
= (struct main_func_closure
*) body_data
;
359 scm_set_program_arguments (closure
->argc
, closure
->argv
, 0);
360 (*closure
->main_func
) (closure
->closure
, closure
->argc
, closure
->argv
);
362 scm_restore_signals ();
364 /* This tick gives any pending
365 * asyncs a chance to run. This must be done after
366 * the call to scm_restore_signals.
370 /* If the caller doesn't want this, they should exit from main_func
383 scm_i_init_guile ((SCM_STACKITEM
*)scm_get_stack_base ());
387 pthread_mutex_t scm_i_init_mutex
= PTHREAD_MUTEX_INITIALIZER
;
388 int scm_initialized_p
= 0;
391 scm_i_init_guile (SCM_STACKITEM
*base
)
393 if (scm_initialized_p
)
398 fprintf (stderr
, "cannot determine stack base!\n");
402 if (sizeof (mpz_t
) > (3 * sizeof (scm_t_bits
)))
405 "GMP's mpz_t must fit into a double_cell,"
406 "but doesn't seem to here.\n");
411 scm_storage_prehistory ();
412 scm_threads_prehistory (base
);
413 scm_ports_prehistory ();
414 scm_smob_prehistory ();
415 scm_hashtab_prehistory (); /* requires storage_prehistory */
416 #ifdef GUILE_DEBUG_MALLOC
417 scm_debug_malloc_prehistory ();
419 if (scm_init_storage ()) /* requires threads_prehistory,
421 hashtab_prehistory */
424 scm_struct_prehistory (); /* requires storage */
425 scm_symbols_prehistory (); /* requires storage */
426 scm_weaks_prehistory (); /* requires storage */
427 scm_init_subr_table ();
428 scm_environments_prehistory (); /* requires storage */
429 scm_modules_prehistory (); /* requires storage and hash tables */
430 scm_init_variable (); /* all bindings need variables */
431 scm_init_continuations ();
432 scm_init_root (); /* requires continuations */
435 scm_init_thread_procs (); /* requires gsubrs */
436 scm_init_procprop ();
437 scm_init_environments ();
440 scm_init_arbiters ();
444 #ifdef GUILE_DEBUG_MALLOC
445 scm_init_debug_malloc ();
452 scm_init_backtrace (); /* Requires fluids */
454 scm_init_strports ();
455 scm_init_gdbint (); /* Requires strports */
458 scm_init_deprecation (); /* Requires hashtabs */
460 scm_init_properties ();
461 scm_init_hooks (); /* Requires smob_prehistory */
462 scm_init_gc (); /* Requires hooks, async */
465 scm_init_keywords ();
479 scm_init_regex_posix ();
483 #ifdef HAVE_NETWORKING
489 scm_init_stackchk ();
491 scm_init_struct (); /* Requires strings */
492 scm_init_stacks (); /* Requires strings, struct */
494 scm_init_values (); /* Requires struct */
495 scm_init_load (); /* Requires strings */
496 scm_init_objects (); /* Requires struct */
497 scm_init_print (); /* Requires strings, struct */
500 scm_init_strorder ();
507 scm_init_guardians ();
511 scm_init_debug (); /* Requires macro smobs */
516 scm_init_load_path ();
517 scm_init_standard_ports (); /* Requires fports */
518 scm_init_dynamic_linking ();
521 #endif /* SCM_ENABLE_ELISP */
527 #if SCM_ENABLE_DISCOURAGED == 1
528 scm_i_init_discouraged ();
531 #if SCM_ENABLE_DEPRECATED == 1
532 scm_i_init_deprecated ();
535 scm_init_threads_root_root ();
537 scm_initialized_p
= 1;
539 scm_block_gc
= 0; /* permit the gc to run */
540 /* ints still disabled */
542 #ifdef STACK_CHECKING
543 scm_stack_checking_enabled_p
= SCM_STACK_CHECKING_P
;
548 scm_init_extensions ();
550 scm_load_startup_files ();