1 /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2004, 2006, 2009, 2010, 2011 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 License
5 * as published by the Free Software Foundation; either version 3 of
6 * the License, or (at your option) any later version.
8 * This library is distributed in the hope that it will be useful, but
9 * 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
21 /* Include the headers for just about everything.
22 We call all their initialization functions. */
34 #include "libguile/_scm.h"
36 /* Everybody has an init function. */
37 #include "libguile/alist.h"
38 #include "libguile/arbiters.h"
39 #include "libguile/async.h"
40 #include "libguile/backtrace.h"
41 #include "libguile/bitvectors.h"
42 #include "libguile/boolean.h"
43 #include "libguile/bytevectors.h"
44 #include "libguile/chars.h"
45 #include "libguile/control.h"
46 #include "libguile/continuations.h"
47 #include "libguile/debug.h"
48 #ifdef GUILE_DEBUG_MALLOC
49 #include "libguile/debug-malloc.h"
51 #include "libguile/deprecation.h"
52 #include "libguile/dynl.h"
53 #include "libguile/dynwind.h"
54 #include "libguile/eq.h"
55 #include "libguile/error.h"
56 #include "libguile/eval.h"
57 #include "libguile/evalext.h"
58 #include "libguile/expand.h"
59 #include "libguile/feature.h"
60 #include "libguile/filesys.h"
61 #include "libguile/fluids.h"
62 #include "libguile/fports.h"
63 #include "libguile/frames.h"
64 #include "libguile/gc.h"
65 #include "libguile/gdbint.h"
66 #include "libguile/generalized-arrays.h"
67 #include "libguile/generalized-vectors.h"
68 #include "libguile/goops.h"
69 #include "libguile/gsubr.h"
70 #include "libguile/hash.h"
71 #include "libguile/hashtab.h"
72 #include "libguile/hooks.h"
73 #include "libguile/gettext.h"
74 #include "libguile/i18n.h"
75 #include "libguile/instructions.h"
76 #include "libguile/iselect.h"
77 #include "libguile/ioext.h"
78 #include "libguile/keywords.h"
79 #include "libguile/list.h"
80 #include "libguile/load.h"
81 #include "libguile/macros.h"
82 #include "libguile/mallocs.h"
83 #include "libguile/memoize.h"
84 #include "libguile/modules.h"
85 #include "libguile/net_db.h"
86 #include "libguile/numbers.h"
87 #include "libguile/objcodes.h"
88 #include "libguile/objprop.h"
89 #include "libguile/options.h"
90 #include "libguile/pairs.h"
91 #include "libguile/poll.h"
92 #include "libguile/ports.h"
93 #include "libguile/posix.h"
95 #include "libguile/regex-posix.h"
97 #include "libguile/print.h"
98 #include "libguile/procprop.h"
99 #include "libguile/procs.h"
100 #include "libguile/programs.h"
101 #include "libguile/promises.h"
102 #include "libguile/array-map.h"
103 #include "libguile/random.h"
104 #include "libguile/rdelim.h"
105 #include "libguile/read.h"
106 #include "libguile/rw.h"
107 #include "libguile/scmsigs.h"
108 #include "libguile/script.h"
109 #include "libguile/simpos.h"
110 #include "libguile/smob.h"
111 #include "libguile/socket.h"
112 #include "libguile/sort.h"
113 #include "libguile/srcprop.h"
114 #include "libguile/stackchk.h"
115 #include "libguile/stacks.h"
116 #include "libguile/stime.h"
117 #include "libguile/strings.h"
118 #include "libguile/srfi-1.h"
119 #include "libguile/srfi-4.h"
120 #include "libguile/srfi-13.h"
121 #include "libguile/srfi-14.h"
122 #include "libguile/srfi-60.h"
123 #include "libguile/strorder.h"
124 #include "libguile/strports.h"
125 #include "libguile/struct.h"
126 #include "libguile/symbols.h"
127 #include "libguile/throw.h"
128 #include "libguile/arrays.h"
129 #include "libguile/trees.h"
130 #include "libguile/values.h"
131 #include "libguile/variable.h"
132 #include "libguile/vectors.h"
133 #include "libguile/version.h"
134 #include "libguile/vm.h"
135 #include "libguile/vports.h"
136 #include "libguile/weaks.h"
137 #include "libguile/guardians.h"
138 #include "libguile/extensions.h"
139 #include "libguile/uniform.h"
140 #include "libguile/deprecated.h"
142 #include "libguile/init.h"
143 #include "libguile/private-options.h"
154 /* initializing standard and current I/O ports */
162 /* proc to be called in scope of exception handler stream_handler. */
164 stream_body (void *data
)
166 stream_body_data
*body_data
= (stream_body_data
*) data
;
167 SCM port
= scm_fdes_to_port (body_data
->fdes
, body_data
->mode
, SCM_BOOL_F
);
169 SCM_REVEALED (port
) = 1;
173 /* exception handler for stream_body. */
175 stream_handler (void *data SCM_UNUSED
,
177 SCM throw_args SCM_UNUSED
)
182 /* Convert a file descriptor to a port, using scm_fdes_to_port.
183 - set the revealed count for FILE's file descriptor to 1, so
184 that fdes won't be closed when the port object is GC'd.
185 - catch exceptions: allow Guile to be able to start up even
186 if it has been handed bogus stdin/stdout/stderr. replace the
187 bad ports with void ports. */
189 scm_standard_stream_to_port (int fdes
, char *mode
)
192 stream_body_data body_data
;
194 body_data
.fdes
= fdes
;
195 body_data
.mode
= mode
;
196 port
= scm_internal_catch (SCM_BOOL_T
, stream_body
, &body_data
,
197 stream_handler
, NULL
);
198 if (scm_is_false (port
))
199 port
= scm_void_port (mode
);
203 /* Create standard ports from stdin, stdout, and stderr. */
205 scm_init_standard_ports ()
207 /* From the SCSH manual:
209 It can be useful to turn I/O buffering off in some cases, for
210 example when an I/O stream is to be shared by multiple
211 subprocesses. For this reason, scsh allocates an unbuffered port
212 for file descriptor 0 at start-up time.
214 Because shells frequently share stdin with subprocesses, if the
215 shell does buffered reads, it might ``steal'' input intended for
216 a subprocess. For this reason, all shells, including sh, csh,
217 and scsh, read stdin unbuffered. Applications that can tolerate
218 buffered input on stdin can reset \ex{(current-input-port)} to
219 block buffering for higher performance. */
221 scm_set_current_input_port
222 (scm_standard_stream_to_port (0, isatty (0) ? "r0" : "r"));
223 scm_set_current_output_port
224 (scm_standard_stream_to_port (1, isatty (1) ? "w0" : "w"));
225 scm_set_current_error_port
226 (scm_standard_stream_to_port (2, isatty (2) ? "w0" : "w"));
231 /* Loading the startup Scheme files. */
233 /* The boot code "ice-9/boot-9" is only loaded by scm_boot_guile when
234 this is false. The unexec code uses this, to keep ice_9 from being
235 loaded into dumped guile executables. */
236 int scm_ice_9_already_loaded
= 0;
239 scm_load_startup_files ()
241 /* We want a path only containing directories from GUILE_LOAD_PATH,
242 SCM_SITE_DIR and SCM_LIBRARY_DIR when searching for the site init
243 file, so we do this before loading Ice-9. */
245 scm_sys_search_load_path (scm_from_locale_string ("init.scm"));
248 if (!scm_ice_9_already_loaded
)
250 scm_c_primitive_load_path ("ice-9/boot-9");
252 /* Load the init.scm file. */
253 if (scm_is_true (init_path
))
254 scm_primitive_load (init_path
);
259 /* The main init code. */
262 typedef int setjmp_type
;
264 typedef long setjmp_type
;
267 /* All the data needed to invoke the main function. */
268 struct main_func_closure
270 /* the function to call */
271 void (*main_func
)(void *closure
, int argc
, char **argv
);
272 void *closure
; /* dummy data to pass it */
274 char **argv
; /* the argument list it should receive */
277 static void *invoke_main_func(void *body_data
);
280 /* Fire up the Guile Scheme interpreter.
282 Call MAIN_FUNC, passing it CLOSURE, ARGC, and ARGV. MAIN_FUNC
283 should do all the work of the program (initializing other packages,
284 reading user input, etc.) before returning. When MAIN_FUNC
285 returns, call exit (EXIT_FAILURE); this function never returns.
286 If you want some other exit value, MAIN_FUNC may call exit itself.
288 scm_boot_guile arranges for program-arguments to return the strings
289 given by ARGC and ARGV. If MAIN_FUNC modifies ARGC/ARGV, should
290 call scm_set_program_arguments with the final list, so Scheme code
291 will know which arguments have been processed.
293 scm_boot_guile establishes a catch-all catch handler which prints
294 an error message and exits the process. This means that Guile
295 exits in a coherent way when system errors occur and the user isn't
296 prepared to handle it. If the user doesn't like this behavior,
297 they can establish their own universal catcher to shadow this one.
299 Why must the caller do all the real work from MAIN_FUNC? The
300 garbage collector assumes that all local variables of type SCM will
301 be above scm_boot_guile's stack frame on the stack. If you try to
302 manipulate SCM values after this function returns, it's the luck of
303 the draw whether the GC will be able to find the objects you
304 allocate. So, scm_boot_guile function exits, rather than
305 returning, to discourage people from making that mistake. */
309 scm_boot_guile (int argc
, char ** argv
, void (*main_func
) (), void *closure
)
312 struct main_func_closure c
;
314 c
.main_func
= main_func
;
319 res
= scm_with_guile (invoke_main_func
, &c
);
321 /* If the caller doesn't want this, they should exit from main_func
331 invoke_main_func (void *body_data
)
333 struct main_func_closure
*closure
= (struct main_func_closure
*) body_data
;
335 scm_set_program_arguments (closure
->argc
, closure
->argv
, 0);
336 (*closure
->main_func
) (closure
->closure
, closure
->argc
, closure
->argv
);
338 scm_restore_signals ();
340 /* This tick gives any pending
341 * asyncs a chance to run. This must be done after
342 * the call to scm_restore_signals.
346 /* Indicate success by returning non-NULL.
351 scm_i_pthread_mutex_t scm_i_init_mutex
= SCM_I_PTHREAD_MUTEX_INITIALIZER
;
352 int scm_initialized_p
= 0;
355 really_cleanup_for_exit (void *unused
)
357 scm_flush_all_ports ();
364 if (scm_i_pthread_mutex_trylock (&scm_i_init_mutex
) == 0)
365 scm_i_pthread_mutex_unlock (&scm_i_init_mutex
);
368 fprintf (stderr
, "Cannot exit gracefully when init is in progress; aborting.\n");
372 /* This function might be called in non-guile mode, so we need to
373 enter it temporarily.
375 scm_with_guile (really_cleanup_for_exit
, NULL
);
379 scm_i_init_guile (void *base
)
381 if (scm_initialized_p
)
384 scm_storage_prehistory ();
385 scm_threads_prehistory (base
); /* requires storage_prehistory */
386 scm_weaks_prehistory (); /* requires storage_prehistory */
387 #ifdef GUILE_DEBUG_MALLOC
388 scm_debug_malloc_prehistory ();
390 scm_symbols_prehistory (); /* requires weaks_prehistory */
391 scm_modules_prehistory ();
392 scm_init_array_handle ();
393 scm_bootstrap_bytevectors (); /* Requires array-handle */
394 scm_bootstrap_instructions ();
395 scm_bootstrap_objcodes ();
396 scm_bootstrap_programs ();
398 scm_register_r6rs_ports ();
399 scm_register_foreign ();
400 scm_register_srfi_1 ();
401 scm_register_srfi_60 ();
402 scm_register_poll ();
404 scm_init_strings (); /* Requires array-handle */
405 scm_init_struct (); /* Requires strings */
406 scm_smob_prehistory ();
407 scm_init_variable ();
408 scm_init_continuations (); /* requires smob_prehistory */
409 scm_init_root (); /* requires continuations */
410 scm_init_threads (); /* requires smob_prehistory */
412 scm_init_thread_procs (); /* requires gsubrs */
413 scm_init_procprop ();
415 scm_init_arbiters (); /* requires smob_prehistory */
416 scm_init_async (); /* requires smob_prehistory */
419 #ifdef GUILE_DEBUG_MALLOC
420 scm_init_debug_malloc ();
422 scm_init_dynwind (); /* requires smob_prehistory */
426 scm_init_control (); /* requires fluids */
428 scm_init_backtrace ();
430 scm_init_strports ();
434 scm_init_deprecation ();
436 scm_init_promises (); /* requires smob_prehistory */
437 scm_init_hooks (); /* Requires smob_prehistory */
438 scm_init_gc (); /* Requires hooks */
439 scm_init_gc_protect_object (); /* requires threads_prehistory */
440 scm_init_gdbint (); /* Requires strports, gc_protect_object */
443 scm_init_keywords (); /* Requires smob_prehistory */
445 scm_init_macros (); /* Requires smob_prehistory */
446 scm_init_mallocs (); /* Requires smob_prehistory */
447 scm_init_modules (); /* Requires smob_prehistory */
451 scm_init_filesys (); /* Requires smob_prehistory */
456 scm_init_regex_posix (); /* Requires smob_prehistory */
460 #ifdef HAVE_NETWORKING
465 scm_init_srcprop (); /* requires smob_prehistory */
466 scm_init_stackchk ();
468 scm_init_generalized_arrays ();
469 scm_init_generalized_vectors ();
470 scm_init_vectors (); /* Requires array-handle, */
472 scm_init_bitvectors (); /* Requires smob_prehistory, array-handle */
473 scm_init_srfi_4 (); /* Requires smob_prehistory, array-handle */
474 scm_init_arrays (); /* Requires smob_prehistory, array-handle */
475 scm_init_array_map ();
477 scm_init_frames (); /* Requires smob_prehistory */
478 scm_init_stacks (); /* Requires strings, struct, frames */
480 scm_init_values (); /* Requires struct */
481 scm_init_load (); /* Requires strings */
482 scm_init_print (); /* Requires strings, struct, smob */
485 scm_init_strorder ();
487 scm_init_srfi_14 (); /* Requires smob_prehistory */
488 scm_init_throw (); /* Requires smob_prehistory */
492 scm_init_guardians (); /* requires smob_prehistory */
494 scm_init_standard_ports (); /* Requires fports */
495 scm_init_expand (); /* Requires structs */
496 scm_init_memoize (); /* Requires smob_prehistory */
497 scm_init_eval (); /* Requires smob_prehistory */
498 scm_init_load_path ();
499 scm_init_eval_in_scheme ();
501 scm_init_debug (); /* Requires macro smobs */
502 scm_init_random (); /* Requires smob_prehistory */
505 scm_init_dynamic_linking (); /* Requires smob_prehistory */
507 scm_bootstrap_i18n ();
512 #if SCM_ENABLE_DEPRECATED == 1
513 scm_i_init_deprecated ();
516 scm_initialized_p
= 1;
518 #ifdef STACK_CHECKING
519 scm_stack_checking_enabled_p
= SCM_STACK_CHECKING_P
;
524 scm_init_extensions ();
526 atexit (cleanup_for_exit
);
527 scm_load_startup_files ();
528 scm_init_load_should_auto_compile ();
530 /* Capture the dynamic state after loading boot-9, so that new threads end up
531 in the guile-user module. */
532 scm_init_threads_default_dynamic_state ();