1 /* GLIB - Library of useful routines for C programming
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
26 /* --- structures --- */
27 typedef struct _GLogDomain GLogDomain;
28 typedef struct _GLogHandler GLogHandler;
32 GLogLevelFlags fatal_mask;
33 GLogHandler *handlers;
39 GLogLevelFlags log_level;
46 /* --- variables --- */
47 const gchar *g_log_domain_glib = "GLib";
48 static GLogDomain *g_log_domains = NULL;
49 static GLogLevelFlags g_log_always_fatal = G_LOG_FATAL_MASK;
50 static GPrintFunc glib_print_func = NULL;
51 static GPrintFunc glib_printerr_func = NULL;
52 static GErrorFunc glib_error_func = NULL;
53 static GWarningFunc glib_warning_func = NULL;
54 static GPrintFunc glib_message_func = NULL;
57 /* --- functions --- */
58 static inline GLogDomain*
59 g_log_find_domain (const gchar *log_domain)
61 register GLogDomain *domain;
63 domain = g_log_domains;
66 if (strcmp (domain->log_domain, log_domain) == 0)
68 domain = domain->next;
73 static inline GLogDomain*
74 g_log_domain_new (const gchar *log_domain)
76 register GLogDomain *domain;
78 domain = g_new (GLogDomain, 1);
79 domain->log_domain = g_strdup (log_domain);
80 domain->fatal_mask = G_LOG_FATAL_MASK;
81 domain->handlers = NULL;
82 domain->next = g_log_domains;
83 g_log_domains = domain;
89 g_log_domain_check_free (GLogDomain *domain)
91 if (domain->fatal_mask == G_LOG_FATAL_MASK &&
92 domain->handlers == NULL)
94 register GLogDomain *last, *work;
103 last->next = domain->next;
105 g_log_domains = domain->next;
106 g_free (domain->log_domain);
115 static inline GLogFunc
116 g_log_domain_get_handler (GLogDomain *domain,
117 GLogLevelFlags log_level,
120 if (domain && log_level)
122 register GLogHandler *handler;
124 handler = domain->handlers;
127 if ((handler->log_level & log_level) == log_level)
129 *data = handler->data;
130 return handler->log_func;
132 handler = handler->next;
135 return g_log_default_handler;
139 g_log_set_always_fatal (GLogLevelFlags fatal_mask)
141 GLogLevelFlags old_mask;
143 /* restrict the global mask to levels that are known to glib */
144 fatal_mask &= (1 << G_LOG_LEVEL_USER_SHIFT) - 1;
145 /* force errors to be fatal */
146 fatal_mask |= G_LOG_LEVEL_ERROR;
147 /* remove bogus flag */
148 fatal_mask &= ~G_LOG_FLAG_FATAL;
150 old_mask = g_log_always_fatal;
151 g_log_always_fatal = fatal_mask;
157 g_log_set_fatal_mask (const gchar *log_domain,
158 GLogLevelFlags fatal_mask)
160 GLogLevelFlags old_flags;
161 register GLogDomain *domain;
166 /* force errors to be fatal */
167 fatal_mask |= G_LOG_LEVEL_ERROR;
168 /* remove bogus flag */
169 fatal_mask &= ~G_LOG_FLAG_FATAL;
171 domain = g_log_find_domain (log_domain);
173 domain = g_log_domain_new (log_domain);
174 old_flags = domain->fatal_mask;
176 domain->fatal_mask = fatal_mask;
177 g_log_domain_check_free (domain);
183 g_log_set_handler (const gchar *log_domain,
184 GLogLevelFlags log_levels,
188 register GLogDomain *domain;
189 register GLogHandler *handler;
190 static guint handler_id = 0;
192 g_return_val_if_fail ((log_levels & G_LOG_LEVEL_MASK) != 0, 0);
193 g_return_val_if_fail (log_func != NULL, 0);
198 domain = g_log_find_domain (log_domain);
200 domain = g_log_domain_new (log_domain);
202 handler = g_new (GLogHandler, 1);
203 handler->id = ++handler_id;
204 handler->log_level = log_levels;
205 handler->log_func = log_func;
206 handler->data = user_data;
207 handler->next = domain->handlers;
208 domain->handlers = handler;
214 g_log_remove_handler (const gchar *log_domain,
217 register GLogDomain *domain;
219 g_return_if_fail (handler_id > 0);
224 domain = g_log_find_domain (log_domain);
227 register GLogHandler *work, *last;
230 work = domain->handlers;
233 if (work->id == handler_id)
236 last->next = work->next;
238 domain->handlers = work->next;
240 g_log_domain_check_free (domain);
246 g_warning ("g_log_remove_handler(): could not find handler with id `%d' for domain \"%s\"",
252 g_logv (const gchar *log_domain,
253 GLogLevelFlags log_level,
261 log_level &= G_LOG_LEVEL_MASK;
265 /* we use a stack buffer of fixed size, because we might get called
268 G_VA_COPY (args2, args1);
269 if (g_printf_string_upper_bound (format, args1) < 1024)
270 vsprintf (buffer, format, args2);
273 /* since we might be out of memory, we can't use g_vsnprintf(). */
274 #ifdef HAVE_VSNPRINTF
275 vsnprintf (buffer, 1024, format, args2);
276 #else /* !HAVE_VSNPRINTF */
277 /* we are out of luck here */
278 strncpy (buffer, format, 1024);
279 #endif /* !HAVE_VSNPRINTF */
284 for (i = g_bit_nth_msf (log_level, -1); i >= 0; i = g_bit_nth_msf (log_level, i))
286 register GLogLevelFlags test_level;
289 if (log_level & test_level)
291 static guint g_log_depth = 0;
294 gpointer data = NULL;
296 domain = g_log_find_domain (log_domain ? log_domain : "");
299 test_level |= G_LOG_FLAG_RECURSION;
301 if ((((domain ? domain->fatal_mask : G_LOG_FATAL_MASK) | g_log_always_fatal) &
303 test_level |= G_LOG_FLAG_FATAL;
304 log_func = g_log_domain_get_handler (domain, test_level, &data);
305 log_func (log_domain, test_level, buffer, data);
307 /* *domain can be cluttered now */
309 if (test_level & G_LOG_FLAG_FATAL)
318 g_log (const gchar *log_domain,
319 GLogLevelFlags log_level,
325 va_start (args, format);
326 g_logv (log_domain, log_level, format, args);
331 g_log_default_handler (const gchar *log_domain,
332 GLogLevelFlags log_level,
333 const gchar *message,
334 gpointer unused_data)
337 gboolean in_recursion;
340 in_recursion = (log_level & G_LOG_FLAG_RECURSION) != 0;
341 is_fatal = (log_level & G_LOG_FLAG_FATAL) != 0;
342 log_level &= G_LOG_LEVEL_MASK;
345 message = "g_log_default_handler(): (NULL) message";
347 fd = (log_level >= G_LOG_LEVEL_MESSAGE) ? 1 : 2;
351 case G_LOG_LEVEL_ERROR:
352 if (!log_domain && glib_error_func)
354 /* compatibility code */
355 glib_error_func (message);
358 /* use write(2) for output, in case we are out of memeory */
362 write (fd, log_domain, strlen (log_domain));
366 write (fd, "\n** ", 4);
368 write (fd, "ERROR (recursed) **: ", 21);
370 write (fd, "ERROR **: ", 10);
371 write (fd, message, strlen(message));
373 write (fd, "\naborting...\n", 13);
377 case G_LOG_LEVEL_CRITICAL:
381 write (fd, log_domain, strlen (log_domain));
385 write (fd, "\n** ", 4);
387 write (fd, "CRITICAL (recursed) **: ", 24);
389 write (fd, "CRITICAL **: ", 13);
390 write (fd, message, strlen(message));
392 write (fd, "\naborting...\n", 13);
396 case G_LOG_LEVEL_WARNING:
397 if (!log_domain && glib_warning_func)
399 /* compatibility code */
400 glib_warning_func (message);
406 write (fd, log_domain, strlen (log_domain));
410 write (fd, "\n** ", 4);
412 write (fd, "WARNING (recursed) **: ", 23);
414 write (fd, "WARNING **: ", 12);
415 write (fd, message, strlen(message));
417 write (fd, "\naborting...\n", 13);
421 case G_LOG_LEVEL_MESSAGE:
422 if (!log_domain && glib_message_func)
424 /* compatibility code */
425 glib_message_func (message);
430 write (fd, log_domain, strlen (log_domain));
434 write (fd, "Message (recursed): ", 20);
436 write (fd, "Message: ", 9);
437 write (fd, message, strlen(message));
439 write (fd, "\naborting...\n", 13);
443 case G_LOG_LEVEL_INFO:
446 write (fd, log_domain, strlen (log_domain));
450 write (fd, "INFO (recursed): ", 17);
452 write (fd, "INFO: ", 6);
453 write (fd, message, strlen(message));
455 write (fd, "\naborting...\n", 13);
459 case G_LOG_LEVEL_DEBUG:
462 write (fd, log_domain, strlen (log_domain));
466 write (fd, "DEBUG (recursed): ", 18);
468 write (fd, "DEBUG: ", 7);
469 write (fd, message, strlen(message));
471 write (fd, "\naborting...\n", 13);
476 /* we are used for a log level that is not defined by GLib itself,
477 * try to make the best out of it.
481 write (fd, log_domain, strlen (log_domain));
483 write (fd, "-LOG (recursed:", 15);
485 write (fd, "-LOG (", 6);
487 else if (in_recursion)
488 write (fd, "LOG (recursed:", 14);
490 write (fd, "LOG (", 5);
493 gchar string[] = "0x00): ";
494 gchar *p = string + 2;
497 i = g_bit_nth_msf (log_level, -1);
500 *p = '0' + (i & 0xf);
504 write (fd, string, 7);
507 write (fd, "): ", 3);
508 write (fd, message, strlen(message));
510 write (fd, "\naborting...\n", 13);
518 g_set_print_handler (GPrintFunc func)
520 GPrintFunc old_print_func;
522 old_print_func = glib_print_func;
523 glib_print_func = func;
525 return old_print_func;
529 g_print (const gchar *format,
535 g_return_if_fail (format != NULL);
537 va_start (args, format);
538 string = g_strdup_vprintf (format, args);
542 glib_print_func (string);
545 fputs (string, stdout);
552 g_set_printerr_handler (GPrintFunc func)
554 GPrintFunc old_printerr_func;
556 old_printerr_func = glib_printerr_func;
557 glib_printerr_func = func;
559 return old_printerr_func;
563 g_printerr (const gchar *format,
569 g_return_if_fail (format != NULL);
571 va_start (args, format);
572 string = g_strdup_vprintf (format, args);
575 if (glib_printerr_func)
576 glib_printerr_func (string);
579 fputs (string, stderr);
585 /* compatibility code */
587 g_set_error_handler (GErrorFunc func)
589 GErrorFunc old_error_func;
591 old_error_func = glib_error_func;
592 glib_error_func = func;
594 return old_error_func;
597 /* compatibility code */
599 g_set_warning_handler (GWarningFunc func)
601 GWarningFunc old_warning_func;
603 old_warning_func = glib_warning_func;
604 glib_warning_func = func;
606 return old_warning_func;
609 /* compatibility code */
611 g_set_message_handler (GPrintFunc func)
613 GPrintFunc old_message_func;
615 old_message_func = glib_message_func;
616 glib_message_func = func;
618 return old_message_func;