2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wtay@chello.be>
4 * 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
6 * gstinfo.c: debugging functions
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
26 * @short_description: Debugging and logging facilities
27 * @see_also: #GstConfig, #Gst for command line parameters
28 * and environment variables that affect the debugging output.
30 * GStreamer's debugging subsystem is an easy way to get information about what
31 * the application is doing. It is not meant for programming errors. Use GLib
32 * methods (g_warning and friends) for that.
34 * The debugging subsystem works only after GStreamer has been initialized
35 * - for example by calling gst_init().
37 * The debugging subsystem is used to log informational messages while the
38 * application runs. Each messages has some properties attached to it. Among
39 * these properties are the debugging category, the severity (called "level"
40 * here) and an optional #GObject it belongs to. Each of these messages is sent
41 * to all registered debugging handlers, which then handle the messages.
42 * GStreamer attaches a default handler on startup, which outputs requested
45 * Messages are output by using shortcut macros like #GST_DEBUG,
46 * #GST_CAT_ERROR_OBJECT or similar. These all expand to calling gst_debug_log()
47 * with the right parameters.
48 * The only thing a developer will probably want to do is define his own
49 * categories. This is easily done with 3 lines. At the top of your code,
51 * the variables and set the default category.
54 * GST_DEBUG_CATEGORY_STATIC (my_category); // define category (statically)
55 * &hash;define GST_CAT_DEFAULT my_category // set as default
58 * After that you only need to initialize the category.
61 * GST_DEBUG_CATEGORY_INIT (my_category, "my category",
62 * 0, "This is my very own");
65 * Initialization must be done before the category is used first.
67 * in their plugin_init function, libraries and applications should do that
68 * during their initialization.
70 * The whole debugging subsystem can be disabled at build time with passing the
71 * --disable-gst-debug switch to configure. If this is done, every function,
72 * macro and even structs described in this file evaluate to default values or
74 * So don't take addresses of these functions or use other tricks.
75 * If you must do that for some reason, there is still an option.
77 * subsystem was compiled out, #GST_DISABLE_GST_DEBUG is defined in
79 * so you can check that before doing your trick.
80 * Disabling the debugging subsystem will give you a slight (read: unnoticeable)
81 * speed increase and will reduce the size of your compiled code. The GStreamer
82 * library itself becomes around 10% smaller.
84 * Please note that there are naming conventions for the names of debugging
85 * categories. These are explained at GST_DEBUG_CATEGORY_INIT().
88 #include "gst_private.h"
91 #ifndef GST_DISABLE_GST_DEBUG
96 #ifdef HAVE_PRINTF_EXTENSION
99 #include <stdio.h> /* fprintf */
101 # include <unistd.h> /* getpid on UNIX */
103 #ifdef HAVE_PROCESS_H
104 # include <process.h> /* getpid on win32 */
106 #include <string.h> /* G_VA_COPY */
108 #include "gst_private.h"
109 #include "gstutils.h"
110 #include "gstsegment.h"
112 # include <valgrind/valgrind.h>
114 #include <glib/gprintf.h> /* g_sprintf */
116 /* underscore is to prevent conflict with GST_CAT_DEBUG define */
117 GST_DEBUG_CATEGORY_STATIC (_GST_CAT_DEBUG);
119 /* time of initialization, so we get useful debugging output times
120 * FIXME: we use this in gstdebugutils.c, what about a function + macro to
121 * get the running time: GST_DEBUG_RUNNING_TIME
123 GstClockTime _priv_gst_info_start_time;
127 #include <rld_interface.h>
128 typedef struct DL_INFO
130 const char *dli_fname;
132 const char *dli_sname;
136 long dli_reserved[4];
140 #define _RLD_DLADDR 14
141 int dladdr (void *address, Dl_info * dl);
144 dladdr (void *address, Dl_info * dl)
148 v = _rld_new_interface (_RLD_DLADDR, address, dl);
154 static void gst_debug_reset_threshold (gpointer category, gpointer unused);
155 static void gst_debug_reset_all_thresholds (void);
157 #ifdef HAVE_PRINTF_EXTENSION
158 static int _gst_info_printf_extension_ptr (FILE * stream,
159 const struct printf_info *info, const void *const *args);
160 static int _gst_info_printf_extension_segment (FILE * stream,
161 const struct printf_info *info, const void *const *args);
162 static int _gst_info_printf_extension_arginfo (const struct printf_info *info,
163 size_t n, int *argtypes);
166 struct _GstDebugMessage
173 /* list of all name/level pairs from --gst-debug and GST_DEBUG */
174 static GStaticMutex __level_name_mutex = G_STATIC_MUTEX_INIT;
175 static GSList *__level_name = NULL;
183 /* list of all categories */
184 static GStaticMutex __cat_mutex = G_STATIC_MUTEX_INIT;
185 static GSList *__categories = NULL;
187 /* all registered debug handlers */
194 static GStaticMutex __log_func_mutex = G_STATIC_MUTEX_INIT;
195 static GSList *__log_functions = NULL;
197 static gint __default_level;
198 static gint __use_color;
200 /* disabled by default, as soon as some threshold is set > NONE,
201 * it becomes enabled. */
202 gboolean __gst_debug_enabled = FALSE;
203 GstDebugLevel __gst_debug_min = GST_LEVEL_NONE;
205 GstDebugCategory *GST_CAT_DEFAULT = NULL;
207 GstDebugCategory *GST_CAT_GST_INIT = NULL;
208 GstDebugCategory *GST_CAT_AUTOPLUG = NULL;
209 GstDebugCategory *GST_CAT_AUTOPLUG_ATTEMPT = NULL;
210 GstDebugCategory *GST_CAT_PARENTAGE = NULL;
211 GstDebugCategory *GST_CAT_STATES = NULL;
212 GstDebugCategory *GST_CAT_SCHEDULING = NULL;
214 GstDebugCategory *GST_CAT_BUFFER = NULL;
215 GstDebugCategory *GST_CAT_BUS = NULL;
216 GstDebugCategory *GST_CAT_CAPS = NULL;
217 GstDebugCategory *GST_CAT_CLOCK = NULL;
218 GstDebugCategory *GST_CAT_ELEMENT_PADS = NULL;
219 GstDebugCategory *GST_CAT_PADS = NULL;
220 GstDebugCategory *GST_CAT_PIPELINE = NULL;
221 GstDebugCategory *GST_CAT_PLUGIN_LOADING = NULL;
222 GstDebugCategory *GST_CAT_PLUGIN_INFO = NULL;
223 GstDebugCategory *GST_CAT_PROPERTIES = NULL;
224 GstDebugCategory *GST_CAT_TYPES = NULL;
225 GstDebugCategory *GST_CAT_XML = NULL;
226 GstDebugCategory *GST_CAT_NEGOTIATION = NULL;
227 GstDebugCategory *GST_CAT_REFCOUNTING = NULL;
228 GstDebugCategory *GST_CAT_ERROR_SYSTEM = NULL;
229 GstDebugCategory *GST_CAT_EVENT = NULL;
230 GstDebugCategory *GST_CAT_MESSAGE = NULL;
231 GstDebugCategory *GST_CAT_PARAMS = NULL;
232 GstDebugCategory *GST_CAT_CALL_TRACE = NULL;
233 GstDebugCategory *GST_CAT_SIGNAL = NULL;
234 GstDebugCategory *GST_CAT_PROBE = NULL;
235 GstDebugCategory *GST_CAT_REGISTRY = NULL;
236 GstDebugCategory *GST_CAT_QOS = NULL;
238 /* FIXME: export this? */
240 _priv_gst_in_valgrind (void)
248 in_valgrind = GST_VG_UNCHECKED;
250 if (in_valgrind == GST_VG_UNCHECKED) {
252 if (RUNNING_ON_VALGRIND) {
253 GST_CAT_INFO (GST_CAT_GST_INIT, "we're running inside valgrind");
254 printf ("GStreamer has detected that it is running inside valgrind.\n");
255 printf ("It might now take different code paths to ease debugging.\n");
256 printf ("Of course, this may also lead to different bugs.\n");
257 in_valgrind = GST_VG_INSIDE;
259 GST_CAT_LOG (GST_CAT_GST_INIT, "not doing extra valgrind stuff");
260 in_valgrind = GST_VG_NO_VALGRIND;
263 in_valgrind = GST_VG_NO_VALGRIND;
265 g_assert (in_valgrind == GST_VG_NO_VALGRIND ||
266 in_valgrind == GST_VG_INSIDE);
268 return (in_valgrind == GST_VG_INSIDE) ? TRUE : FALSE;
274 * Initializes the debugging system.
275 * Normally you don't want to call this, because gst_init() does it for you.
278 _gst_debug_init (void)
280 g_atomic_int_set (&__default_level, GST_LEVEL_DEFAULT);
281 g_atomic_int_set (&__use_color, 1);
283 /* get time we started for debugging messages */
284 _priv_gst_info_start_time = gst_util_get_timestamp ();
286 #ifdef HAVE_PRINTF_EXTENSION
287 register_printf_function (GST_PTR_FORMAT[0], _gst_info_printf_extension_ptr,
288 _gst_info_printf_extension_arginfo);
289 register_printf_function (GST_SEGMENT_FORMAT[0],
290 _gst_info_printf_extension_segment, _gst_info_printf_extension_arginfo);
293 /* do NOT use a single debug function before this line has been run */
294 GST_CAT_DEFAULT = _gst_debug_category_new ("default",
295 GST_DEBUG_UNDERLINE, NULL);
296 _GST_CAT_DEBUG = _gst_debug_category_new ("GST_DEBUG",
297 GST_DEBUG_BOLD | GST_DEBUG_FG_YELLOW, "debugging subsystem");
299 gst_debug_add_log_function (gst_debug_log_default, NULL);
301 /* FIXME: add descriptions here */
302 GST_CAT_GST_INIT = _gst_debug_category_new ("GST_INIT",
303 GST_DEBUG_BOLD | GST_DEBUG_FG_RED, NULL);
304 GST_CAT_AUTOPLUG = _gst_debug_category_new ("GST_AUTOPLUG",
305 GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL);
306 GST_CAT_AUTOPLUG_ATTEMPT = _gst_debug_category_new ("GST_AUTOPLUG_ATTEMPT",
307 GST_DEBUG_BOLD | GST_DEBUG_FG_CYAN | GST_DEBUG_BG_BLUE, NULL);
308 GST_CAT_PARENTAGE = _gst_debug_category_new ("GST_PARENTAGE",
309 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
310 GST_CAT_STATES = _gst_debug_category_new ("GST_STATES",
311 GST_DEBUG_BOLD | GST_DEBUG_FG_RED, NULL);
312 GST_CAT_SCHEDULING = _gst_debug_category_new ("GST_SCHEDULING",
313 GST_DEBUG_BOLD | GST_DEBUG_FG_MAGENTA, NULL);
314 GST_CAT_BUFFER = _gst_debug_category_new ("GST_BUFFER",
315 GST_DEBUG_BOLD | GST_DEBUG_BG_GREEN, NULL);
316 GST_CAT_BUS = _gst_debug_category_new ("GST_BUS", GST_DEBUG_BG_YELLOW, NULL);
317 GST_CAT_CAPS = _gst_debug_category_new ("GST_CAPS",
318 GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL);
319 GST_CAT_CLOCK = _gst_debug_category_new ("GST_CLOCK",
320 GST_DEBUG_BOLD | GST_DEBUG_FG_YELLOW, NULL);
321 GST_CAT_ELEMENT_PADS = _gst_debug_category_new ("GST_ELEMENT_PADS",
322 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
323 GST_CAT_PADS = _gst_debug_category_new ("GST_PADS",
324 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
325 GST_CAT_PIPELINE = _gst_debug_category_new ("GST_PIPELINE",
326 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
327 GST_CAT_PLUGIN_LOADING = _gst_debug_category_new ("GST_PLUGIN_LOADING",
328 GST_DEBUG_BOLD | GST_DEBUG_FG_CYAN, NULL);
329 GST_CAT_PLUGIN_INFO = _gst_debug_category_new ("GST_PLUGIN_INFO",
330 GST_DEBUG_BOLD | GST_DEBUG_FG_CYAN, NULL);
331 GST_CAT_PROPERTIES = _gst_debug_category_new ("GST_PROPERTIES",
332 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_BLUE, NULL);
333 GST_CAT_TYPES = _gst_debug_category_new ("GST_TYPES",
334 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
335 GST_CAT_XML = _gst_debug_category_new ("GST_XML",
336 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
337 GST_CAT_NEGOTIATION = _gst_debug_category_new ("GST_NEGOTIATION",
338 GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL);
339 GST_CAT_REFCOUNTING = _gst_debug_category_new ("GST_REFCOUNTING",
340 GST_DEBUG_BOLD | GST_DEBUG_FG_RED | GST_DEBUG_BG_BLUE, NULL);
341 GST_CAT_ERROR_SYSTEM = _gst_debug_category_new ("GST_ERROR_SYSTEM",
342 GST_DEBUG_BOLD | GST_DEBUG_FG_RED | GST_DEBUG_BG_WHITE, NULL);
344 GST_CAT_EVENT = _gst_debug_category_new ("GST_EVENT",
345 GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL);
346 GST_CAT_MESSAGE = _gst_debug_category_new ("GST_MESSAGE",
347 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
348 GST_CAT_PARAMS = _gst_debug_category_new ("GST_PARAMS",
349 GST_DEBUG_BOLD | GST_DEBUG_FG_BLACK | GST_DEBUG_BG_YELLOW, NULL);
350 GST_CAT_CALL_TRACE = _gst_debug_category_new ("GST_CALL_TRACE",
351 GST_DEBUG_BOLD, NULL);
352 GST_CAT_SIGNAL = _gst_debug_category_new ("GST_SIGNAL",
353 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
354 GST_CAT_PROBE = _gst_debug_category_new ("GST_PROBE",
355 GST_DEBUG_BOLD | GST_DEBUG_FG_GREEN, "pad probes");
356 GST_CAT_REGISTRY = _gst_debug_category_new ("GST_REGISTRY", 0, "registry");
357 GST_CAT_QOS = _gst_debug_category_new ("GST_QOS", 0, "QoS");
360 /* print out the valgrind message if we're in valgrind */
361 _priv_gst_in_valgrind ();
364 /* we can't do this further above, because we initialize the GST_CAT_DEFAULT struct */
365 #define GST_CAT_DEFAULT _GST_CAT_DEBUG
369 * @category: category to log
370 * @level: level of the message is in
371 * @file: the file that emitted the message, usually the __FILE__ identifier
372 * @function: the function that emitted the message
373 * @line: the line from that the message was emitted, usually __LINE__
374 * @object: the object this message relates to or NULL if none
375 * @format: a printf style format string
376 * @...: optional arguments for the format
378 * Logs the given message using the currently registered debugging handlers.
381 gst_debug_log (GstDebugCategory * category, GstDebugLevel level,
382 const gchar * file, const gchar * function, gint line,
383 GObject * object, const gchar * format, ...)
387 va_start (var_args, format);
388 gst_debug_log_valist (category, level, file, function, line, object, format,
394 * gst_debug_log_valist:
395 * @category: category to log
396 * @level: level of the message is in
397 * @file: the file that emitted the message, usually the __FILE__ identifier
398 * @function: the function that emitted the message
399 * @line: the line from that the message was emitted, usually __LINE__
400 * @object: the object this message relates to or NULL if none
401 * @format: a printf style format string
402 * @args: optional arguments for the format
404 * Logs the given message using the currently registered debugging handlers.
407 gst_debug_log_valist (GstDebugCategory * category, GstDebugLevel level,
408 const gchar * file, const gchar * function, gint line,
409 GObject * object, const gchar * format, va_list args)
411 GstDebugMessage message;
416 gchar *file_basename;
419 g_return_if_fail (category != NULL);
420 g_return_if_fail (file != NULL);
421 g_return_if_fail (function != NULL);
422 g_return_if_fail (format != NULL);
426 * The predefined macro __FILE__ is always the exact path given to the
427 * compiler with MSVC, which may or may not be the basename. We work
428 * around it at runtime to improve the readability.
430 file = file_basename = g_path_get_basename (file);
433 message.message = NULL;
434 message.format = format;
435 G_VA_COPY (message.arguments, args);
437 handler = __log_functions;
439 entry = handler->data;
440 handler = g_slist_next (handler);
441 entry->func (category, level, file, function, line, object, &message,
444 g_free (message.message);
445 va_end (message.arguments);
448 g_free (file_basename);
453 * gst_debug_message_get:
454 * @message: a debug message
456 * Gets the string representation of a #GstDebugMessage. This function is used
457 * in debug handlers to extract the message.
459 * Returns: the string representation of a #GstDebugMessage.
462 gst_debug_message_get (GstDebugMessage * message)
464 if (message->message == NULL) {
465 message->message = g_strdup_vprintf (message->format, message->arguments);
467 return message->message;
472 gst_debug_print_object (gpointer ptr)
474 GObject *object = (GObject *) ptr;
477 /* This is a cute trick to detect unmapped memory, but is unportable,
478 * slow, screws around with madvise, and not actually that useful. */
482 ret = madvise ((void *) ((unsigned long) ptr & (~0xfff)), 4096, 0);
483 if (ret == -1 && errno == ENOMEM) {
484 buffer = g_strdup_printf ("%p (unmapped memory)", ptr);
489 /* nicely printed object */
490 if (object == NULL) {
491 return g_strdup ("(NULL)");
493 if (*(GType *) ptr == GST_TYPE_CAPS) {
494 return gst_caps_to_string ((GstCaps *) ptr);
496 if (*(GType *) ptr == GST_TYPE_STRUCTURE) {
497 return gst_structure_to_string ((GstStructure *) ptr);
500 if (*(guint32 *) ptr == 0xffffffff) {
501 return g_strdup_printf ("<poisoned@%p>", ptr);
504 if (GST_IS_PAD (object) && GST_OBJECT_NAME (object)) {
505 return g_strdup_printf ("<%s:%s>", GST_DEBUG_PAD_NAME (object));
507 if (GST_IS_OBJECT (object) && GST_OBJECT_NAME (object)) {
508 return g_strdup_printf ("<%s>", GST_OBJECT_NAME (object));
510 if (G_IS_OBJECT (object)) {
511 return g_strdup_printf ("<%s@%p>", G_OBJECT_TYPE_NAME (object), object);
513 if (GST_IS_MESSAGE (object)) {
514 GstMessage *msg = GST_MESSAGE_CAST (object);
517 if (msg->structure) {
518 s = gst_structure_to_string (msg->structure);
520 s = g_strdup ("(NULL)");
523 ret = g_strdup_printf ("%s message from element '%s': %s",
524 GST_MESSAGE_TYPE_NAME (msg), (msg->src != NULL) ?
525 GST_ELEMENT_NAME (msg->src) : "(NULL)", s);
530 return g_strdup_printf ("%p", ptr);
533 #ifdef HAVE_PRINTF_EXTENSION
536 gst_debug_print_segment (gpointer ptr)
538 GstSegment *segment = (GstSegment *) ptr;
540 /* nicely printed segment */
541 if (segment == NULL) {
542 return g_strdup ("(NULL)");
545 switch (segment->format) {
546 case GST_FORMAT_UNDEFINED:{
547 return g_strdup_printf ("UNDEFINED segment");
549 case GST_FORMAT_TIME:{
550 return g_strdup_printf ("time segment start=%" GST_TIME_FORMAT
551 ", stop=%" GST_TIME_FORMAT ", last_stop=%" GST_TIME_FORMAT
552 ", duration=%" GST_TIME_FORMAT ", rate=%f, applied_rate=%f"
553 ", flags=0x%02x, time=%" GST_TIME_FORMAT ", accum=%" GST_TIME_FORMAT,
554 GST_TIME_ARGS (segment->start), GST_TIME_ARGS (segment->stop),
555 GST_TIME_ARGS (segment->last_stop), GST_TIME_ARGS (segment->duration),
556 segment->rate, segment->applied_rate, (guint) segment->flags,
557 GST_TIME_ARGS (segment->time), GST_TIME_ARGS (segment->accum));
560 const gchar *format_name;
562 format_name = gst_format_get_name (segment->format);
563 if (G_UNLIKELY (format_name == NULL))
564 format_name = "(UNKNOWN FORMAT)";
565 return g_strdup_printf ("%s segment start=%" G_GINT64_FORMAT
566 ", stop=%" G_GINT64_FORMAT ", last_stop=%" G_GINT64_FORMAT
567 ", duration=%" G_GINT64_FORMAT ", rate=%f, applied_rate=%f"
568 ", flags=0x%02x, time=%" GST_TIME_FORMAT ", accum=%" GST_TIME_FORMAT,
569 format_name, segment->start, segment->stop, segment->last_stop,
570 segment->duration, segment->rate, segment->applied_rate,
571 (guint) segment->flags, GST_TIME_ARGS (segment->time),
572 GST_TIME_ARGS (segment->accum));
577 #endif /* HAVE_PRINTF_EXTENSION */
580 * gst_debug_construct_term_color:
581 * @colorinfo: the color info
583 * Constructs a string that can be used for getting the desired color in color
585 * You need to free the string after use.
587 * Returns: a string containing the color definition
590 gst_debug_construct_term_color (guint colorinfo)
594 color = g_string_new ("\033[00");
596 if (colorinfo & GST_DEBUG_BOLD) {
597 g_string_append_len (color, ";01", 3);
599 if (colorinfo & GST_DEBUG_UNDERLINE) {
600 g_string_append_len (color, ";04", 3);
602 if (colorinfo & GST_DEBUG_FG_MASK) {
603 g_string_append_printf (color, ";3%1d", colorinfo & GST_DEBUG_FG_MASK);
605 if (colorinfo & GST_DEBUG_BG_MASK) {
606 g_string_append_printf (color, ";4%1d",
607 (colorinfo & GST_DEBUG_BG_MASK) >> 4);
609 g_string_append_c (color, 'm');
611 return g_string_free (color, FALSE);
615 * gst_debug_log_default:
616 * @category: category to log
617 * @level: level of the message
618 * @file: the file that emitted the message, usually the __FILE__ identifier
619 * @function: the function that emitted the message
620 * @line: the line from that the message was emitted, usually __LINE__
621 * @message: the actual message
622 * @object: the object this message relates to or NULL if none
623 * @unused: an unused variable, reserved for some user_data.
625 * The default logging handler used by GStreamer. Logging functions get called
626 * whenever a macro like GST_DEBUG or similar is used. This function outputs the
627 * message and additional info using the glib error handler.
628 * You can add other handlers by using gst_debug_add_log_function().
629 * And you can remove this handler by calling
630 * gst_debug_remove_log_function(gst_debug_log_default);
633 gst_debug_log_default (GstDebugCategory * category, GstDebugLevel level,
634 const gchar * file, const gchar * function, gint line,
635 GObject * object, GstDebugMessage * message, gpointer unused)
641 const gchar *levelcolor;
643 GstClockTime elapsed;
644 gboolean free_color = TRUE;
645 gboolean free_obj = TRUE;
646 static const gchar *levelcolormap[] = {
647 "\033[37m", /* GST_LEVEL_NONE */
648 "\033[31;01m", /* GST_LEVEL_ERROR */
649 "\033[33;01m", /* GST_LEVEL_WARNING */
650 "\033[32;01m", /* GST_LEVEL_INFO */
651 "\033[36m", /* GST_LEVEL_DEBUG */
652 "\033[37m" /* GST_LEVEL_LOG */
655 if (level > gst_debug_category_get_threshold (category))
661 if (gst_debug_is_colored ()) {
662 color = gst_debug_construct_term_color (gst_debug_category_get_color
665 g_sprintf (pidcolor, "\033[3%1dm", pid % 6 + 31);
666 levelcolor = levelcolormap[level];
676 obj = gst_debug_print_object (object);
682 elapsed = GST_CLOCK_DIFF (_priv_gst_info_start_time,
683 gst_util_get_timestamp ());
685 #if defined (GLIB_SIZEOF_VOID_P) && GLIB_SIZEOF_VOID_P == 8
686 /* width of %p varies depending on actual value of pointer, which can make
687 * output unevenly aligned if multiple threads are involved, hence the %14p
688 * (should really be %18p, but %14p seems a good compromise between too many
689 * white spaces and likely unalignment on my system) */
690 g_printerr ("%" GST_TIME_FORMAT
691 " %s%5d%s %14p %s%s%s %s%20s %s:%d:%s:%s%s %s\n", GST_TIME_ARGS (elapsed),
692 pidcolor, pid, clear, g_thread_self (), levelcolor,
693 gst_debug_level_get_name (level), clear, color,
694 gst_debug_category_get_name (category), file, line, function, obj, clear,
695 gst_debug_message_get (message));
697 g_printerr ("%" GST_TIME_FORMAT
698 " %s%5d%s %10p %s%s%s %s%20s %s:%d:%s:%s%s %s\n", GST_TIME_ARGS (elapsed),
699 pidcolor, pid, clear, g_thread_self (), levelcolor,
700 gst_debug_level_get_name (level), clear, color,
701 gst_debug_category_get_name (category), file, line, function, obj, clear,
702 gst_debug_message_get (message));
712 * gst_debug_level_get_name:
713 * @level: the level to get the name for
715 * Get the string representation of a debugging level
720 gst_debug_level_get_name (GstDebugLevel level)
725 case GST_LEVEL_ERROR:
727 case GST_LEVEL_WARNING:
731 case GST_LEVEL_DEBUG:
736 g_warning ("invalid level specified for gst_debug_level_get_name");
742 * gst_debug_add_log_function:
743 * @func: the function to use
746 * Adds the logging function to the list of logging functions.
747 * Be sure to use G_GNUC_NO_INSTRUMENT on that function, it is needed.
750 gst_debug_add_log_function (GstLogFunction func, gpointer data)
755 g_return_if_fail (func != NULL);
757 entry = g_new (LogFuncEntry, 1);
759 entry->user_data = data;
760 /* FIXME: we leak the old list here - other threads might access it right now
761 * in gst_debug_logv. Another solution is to lock the mutex in gst_debug_logv,
762 * but that is waaay costly.
763 * It'd probably be clever to use some kind of RCU here, but I don't know
764 * anything about that.
766 g_static_mutex_lock (&__log_func_mutex);
767 list = g_slist_copy (__log_functions);
768 __log_functions = g_slist_prepend (list, entry);
769 g_static_mutex_unlock (&__log_func_mutex);
771 GST_DEBUG ("prepended log function %p (user data %p) to log functions",
776 gst_debug_compare_log_function_by_func (gconstpointer entry, gconstpointer func)
778 gpointer entryfunc = (gpointer) (((LogFuncEntry *) entry)->func);
780 return (entryfunc < func) ? -1 : (entryfunc > func) ? 1 : 0;
784 gst_debug_compare_log_function_by_data (gconstpointer entry, gconstpointer data)
786 gpointer entrydata = ((LogFuncEntry *) entry)->user_data;
788 return (entrydata < data) ? -1 : (entrydata > data) ? 1 : 0;
792 gst_debug_remove_with_compare_func (GCompareFunc func, gpointer data)
798 g_static_mutex_lock (&__log_func_mutex);
799 new = __log_functions;
800 while ((found = g_slist_find_custom (new, data, func))) {
801 if (new == __log_functions) {
802 /* make a copy when we have the first hit, so that we modify the copy and
803 * make that the new list later */
804 new = g_slist_copy (new);
807 g_free (found->data);
808 new = g_slist_delete_link (new, found);
811 /* FIXME: We leak the old list here. See _add_log_function for why. */
812 __log_functions = new;
813 g_static_mutex_unlock (&__log_func_mutex);
819 * gst_debug_remove_log_function:
820 * @func: the log function to remove
822 * Removes all registered instances of the given logging functions.
824 * Returns: How many instances of the function were removed
827 gst_debug_remove_log_function (GstLogFunction func)
831 g_return_val_if_fail (func != NULL, 0);
834 gst_debug_remove_with_compare_func
835 (gst_debug_compare_log_function_by_func, (gpointer) func);
836 GST_DEBUG ("removed log function %p %d times from log function list", func,
843 * gst_debug_remove_log_function_by_data:
844 * @data: user data of the log function to remove
846 * Removes all registered instances of log functions with the given user data.
848 * Returns: How many instances of the function were removed
851 gst_debug_remove_log_function_by_data (gpointer data)
856 gst_debug_remove_with_compare_func
857 (gst_debug_compare_log_function_by_data, data);
859 ("removed %d log functions with user data %p from log function list",
866 * gst_debug_set_colored:
867 * @colored: Whether to use colored output or not
869 * Sets or unsets the use of coloured debugging output.
872 gst_debug_set_colored (gboolean colored)
874 g_atomic_int_set (&__use_color, colored ? 1 : 0);
878 * gst_debug_is_colored:
880 * Checks if the debugging output should be colored.
882 * Returns: TRUE, if the debug output should be colored.
885 gst_debug_is_colored (void)
887 return g_atomic_int_get (&__use_color) == 0 ? FALSE : TRUE;
891 * gst_debug_set_active:
892 * @active: Whether to use debugging output or not
894 * If activated, debugging messages are sent to the debugging
896 * It makes sense to deactivate it for speed issues.
897 * <note><para>This function is not threadsafe. It makes sense to only call it
898 * during initialization.</para></note>
901 gst_debug_set_active (gboolean active)
903 __gst_debug_enabled = active;
905 __gst_debug_min = GST_LEVEL_COUNT;
907 __gst_debug_min = GST_LEVEL_NONE;
911 * gst_debug_is_active:
913 * Checks if debugging output is activated.
915 * Returns: TRUE, if debugging is activated
918 gst_debug_is_active (void)
920 return __gst_debug_enabled;
924 * gst_debug_set_default_threshold:
925 * @level: level to set
927 * Sets the default threshold to the given level and updates all categories to
928 * use this threshold.
931 gst_debug_set_default_threshold (GstDebugLevel level)
933 g_atomic_int_set (&__default_level, level);
934 gst_debug_reset_all_thresholds ();
938 * gst_debug_get_default_threshold:
940 * Returns the default threshold that is used for new categories.
942 * Returns: the default threshold level
945 gst_debug_get_default_threshold (void)
947 return (GstDebugLevel) g_atomic_int_get (&__default_level);
950 gst_debug_reset_threshold (gpointer category, gpointer unused)
952 GstDebugCategory *cat = (GstDebugCategory *) category;
955 g_static_mutex_lock (&__level_name_mutex);
958 LevelNameEntry *entry = walk->data;
960 walk = g_slist_next (walk);
961 if (g_pattern_match_string (entry->pat, cat->name)) {
962 GST_LOG ("category %s matches pattern %p - gets set to level %d",
963 cat->name, entry->pat, entry->level);
964 gst_debug_category_set_threshold (cat, entry->level);
968 gst_debug_category_set_threshold (cat, gst_debug_get_default_threshold ());
971 g_static_mutex_unlock (&__level_name_mutex);
974 gst_debug_reset_all_thresholds (void)
976 g_static_mutex_lock (&__cat_mutex);
977 g_slist_foreach (__categories, gst_debug_reset_threshold, NULL);
978 g_static_mutex_unlock (&__cat_mutex);
981 for_each_threshold_by_entry (gpointer data, gpointer user_data)
983 GstDebugCategory *cat = (GstDebugCategory *) data;
984 LevelNameEntry *entry = (LevelNameEntry *) user_data;
986 if (g_pattern_match_string (entry->pat, cat->name)) {
987 GST_LOG ("category %s matches pattern %p - gets set to level %d",
988 cat->name, entry->pat, entry->level);
989 gst_debug_category_set_threshold (cat, entry->level);
994 * gst_debug_set_threshold_for_name:
995 * @name: name of the categories to set
996 * @level: level to set them to
998 * Sets all categories which match the given glob style pattern to the given
1002 gst_debug_set_threshold_for_name (const gchar * name, GstDebugLevel level)
1005 LevelNameEntry *entry;
1007 g_return_if_fail (name != NULL);
1009 pat = g_pattern_spec_new (name);
1010 entry = g_new (LevelNameEntry, 1);
1012 entry->level = level;
1013 g_static_mutex_lock (&__level_name_mutex);
1014 __level_name = g_slist_prepend (__level_name, entry);
1015 g_static_mutex_unlock (&__level_name_mutex);
1016 g_static_mutex_lock (&__cat_mutex);
1017 g_slist_foreach (__categories, for_each_threshold_by_entry, entry);
1018 g_static_mutex_unlock (&__cat_mutex);
1022 * gst_debug_unset_threshold_for_name:
1023 * @name: name of the categories to set
1025 * Resets all categories with the given name back to the default level.
1028 gst_debug_unset_threshold_for_name (const gchar * name)
1033 g_return_if_fail (name != NULL);
1035 pat = g_pattern_spec_new (name);
1036 g_static_mutex_lock (&__level_name_mutex);
1037 walk = __level_name;
1038 /* improve this if you want, it's mighty slow */
1040 LevelNameEntry *entry = walk->data;
1042 if (g_pattern_spec_equal (entry->pat, pat)) {
1043 __level_name = g_slist_remove_link (__level_name, walk);
1044 g_pattern_spec_free (entry->pat);
1046 g_slist_free_1 (walk);
1047 walk = __level_name;
1050 g_static_mutex_unlock (&__level_name_mutex);
1051 g_pattern_spec_free (pat);
1052 gst_debug_reset_all_thresholds ();
1056 _gst_debug_category_new (const gchar * name, guint color,
1057 const gchar * description)
1059 GstDebugCategory *cat;
1061 g_return_val_if_fail (name != NULL, NULL);
1063 cat = g_new (GstDebugCategory, 1);
1064 cat->name = g_strdup (name);
1066 if (description != NULL) {
1067 cat->description = g_strdup (description);
1069 cat->description = g_strdup ("no description");
1071 g_atomic_int_set (&cat->threshold, 0);
1072 gst_debug_reset_threshold (cat, NULL);
1074 /* add to category list */
1075 g_static_mutex_lock (&__cat_mutex);
1076 __categories = g_slist_prepend (__categories, cat);
1077 g_static_mutex_unlock (&__cat_mutex);
1083 * gst_debug_category_free:
1084 * @category: #GstDebugCategory to free.
1086 * Removes and frees the category and all associated resources.
1089 gst_debug_category_free (GstDebugCategory * category)
1091 if (category == NULL)
1094 /* remove from category list */
1095 g_static_mutex_lock (&__cat_mutex);
1096 __categories = g_slist_remove (__categories, category);
1097 g_static_mutex_unlock (&__cat_mutex);
1099 g_free ((gpointer) category->name);
1100 g_free ((gpointer) category->description);
1105 * gst_debug_category_set_threshold:
1106 * @category: a #GstDebugCategory to set threshold of.
1107 * @level: the #GstDebugLevel threshold to set.
1109 * Sets the threshold of the category to the given level. Debug information will
1110 * only be output if the threshold is lower or equal to the level of the
1111 * debugging message.
1113 * Do not use this function in production code, because other functions may
1114 * change the threshold of categories as side effect. It is however a nice
1115 * function to use when debugging (even from gdb).
1119 gst_debug_category_set_threshold (GstDebugCategory * category,
1120 GstDebugLevel level)
1122 g_return_if_fail (category != NULL);
1124 if (level > __gst_debug_min) {
1125 __gst_debug_enabled = TRUE;
1126 __gst_debug_min = level;
1129 g_atomic_int_set (&category->threshold, level);
1133 * gst_debug_category_reset_threshold:
1134 * @category: a #GstDebugCategory to reset threshold of.
1136 * Resets the threshold of the category to the default level. Debug information
1137 * will only be output if the threshold is lower or equal to the level of the
1138 * debugging message.
1139 * Use this function to set the threshold back to where it was after using
1140 * gst_debug_category_set_threshold().
1143 gst_debug_category_reset_threshold (GstDebugCategory * category)
1145 gst_debug_reset_threshold (category, NULL);
1149 * gst_debug_category_get_threshold:
1150 * @category: a #GstDebugCategory to get threshold of.
1152 * Returns the threshold of a #GstDebugCategory.
1154 * Returns: the #GstDebugLevel that is used as threshold.
1157 gst_debug_category_get_threshold (GstDebugCategory * category)
1159 return g_atomic_int_get (&category->threshold);
1163 * gst_debug_category_get_name:
1164 * @category: a #GstDebugCategory to get name of.
1166 * Returns the name of a debug category.
1168 * Returns: the name of the category.
1171 gst_debug_category_get_name (GstDebugCategory * category)
1173 return category->name;
1177 * gst_debug_category_get_color:
1178 * @category: a #GstDebugCategory to get the color of.
1180 * Returns the color of a debug category used when printing output in this
1183 * Returns: the color of the category.
1186 gst_debug_category_get_color (GstDebugCategory * category)
1188 return category->color;
1192 * gst_debug_category_get_description:
1193 * @category: a #GstDebugCategory to get the description of.
1195 * Returns the description of a debug category.
1197 * Returns: the description of the category.
1200 gst_debug_category_get_description (GstDebugCategory * category)
1202 return category->description;
1206 * gst_debug_get_all_categories:
1208 * Returns a snapshot of a all categories that are currently in use . This list
1209 * may change anytime.
1210 * The caller has to free the list after use.
1212 * Returns: the list of categories
1215 gst_debug_get_all_categories (void)
1219 g_static_mutex_lock (&__cat_mutex);
1220 ret = g_slist_copy (__categories);
1221 g_static_mutex_unlock (&__cat_mutex);
1226 /*** FUNCTION POINTERS ********************************************************/
1228 static GHashTable *__gst_function_pointers; /* NULL */
1229 static GStaticMutex __dbg_functions_mutex = G_STATIC_MUTEX_INIT;
1232 _gst_debug_nameof_funcptr (GstDebugFuncPtr ptr)
1233 G_GNUC_NO_INSTRUMENT;
1235 /* This function MUST NOT return NULL */
1236 const gchar *_gst_debug_nameof_funcptr (GstDebugFuncPtr func)
1244 if (G_UNLIKELY (func == NULL))
1247 g_static_mutex_lock (&__dbg_functions_mutex);
1248 if (G_LIKELY (__gst_function_pointers)) {
1249 ptrname = g_hash_table_lookup (__gst_function_pointers, (gpointer) func);
1250 g_static_mutex_unlock (&__dbg_functions_mutex);
1251 if (G_LIKELY (ptrname))
1254 g_static_mutex_unlock (&__dbg_functions_mutex);
1256 /* we need to create an entry in the hash table for this one so we don't leak
1259 if (dladdr ((gpointer) func, &dl_info) && dl_info.dli_sname) {
1260 gchar *name = g_strdup (dl_info.dli_sname);
1262 _gst_debug_register_funcptr (func, name);
1267 gchar *name = g_strdup_printf ("%p", (gpointer) func);
1269 _gst_debug_register_funcptr (func, name);
1275 _gst_debug_register_funcptr (GstDebugFuncPtr func, const gchar * ptrname)
1277 gpointer ptr = (gpointer) func;
1279 g_static_mutex_lock (&__dbg_functions_mutex);
1281 if (!__gst_function_pointers)
1282 __gst_function_pointers = g_hash_table_new (g_direct_hash, g_direct_equal);
1283 if (!g_hash_table_lookup (__gst_function_pointers, ptr))
1284 g_hash_table_insert (__gst_function_pointers, ptr, (gpointer) ptrname);
1286 g_static_mutex_unlock (&__dbg_functions_mutex);
1289 /*** PRINTF EXTENSIONS ********************************************************/
1291 #ifdef HAVE_PRINTF_EXTENSION
1293 _gst_info_printf_extension_ptr (FILE * stream, const struct printf_info *info,
1294 const void *const *args)
1301 ptr = *(void **) args[0];
1303 buffer = gst_debug_print_object (ptr);
1304 len = fprintf (stream, "%*s", (info->left ? -info->width : info->width),
1312 _gst_info_printf_extension_segment (FILE * stream,
1313 const struct printf_info *info, const void *const *args)
1320 ptr = *(void **) args[0];
1322 buffer = gst_debug_print_segment (ptr);
1323 len = fprintf (stream, "%*s", (info->left ? -info->width : info->width),
1331 _gst_info_printf_extension_arginfo (const struct printf_info *info, size_t n,
1335 argtypes[0] = PA_POINTER;
1338 #endif /* HAVE_PRINTF_EXTENSION */
1340 #else /* !GST_DISABLE_GST_DEBUG */
1342 gst_debug_remove_log_function (GstLogFunction func)
1348 gst_debug_remove_log_function_by_data (gpointer data)
1354 _priv_gst_in_valgrind (void)
1359 #endif /* GST_DISABLE_GST_DEBUG */
1362 #ifdef GST_ENABLE_FUNC_INSTRUMENTATION
1363 /* FIXME make this thread specific */
1364 static GSList *stack_trace = NULL;
1367 __cyg_profile_func_enter (void *this_fn, void *call_site)
1368 G_GNUC_NO_INSTRUMENT;
1369 void __cyg_profile_func_enter (void *this_fn, void *call_site)
1371 gchar *name = _gst_debug_nameof_funcptr (this_fn);
1372 gchar *site = _gst_debug_nameof_funcptr (call_site);
1374 GST_CAT_DEBUG (GST_CAT_CALL_TRACE, "entering function %s from %s", name,
1377 g_slist_prepend (stack_trace, g_strdup_printf ("%8p in %s from %p (%s)",
1378 this_fn, name, call_site, site));
1385 __cyg_profile_func_exit (void *this_fn, void *call_site)
1386 G_GNUC_NO_INSTRUMENT;
1387 void __cyg_profile_func_exit (void *this_fn, void *call_site)
1389 gchar *name = _gst_debug_nameof_funcptr (this_fn);
1391 GST_CAT_DEBUG (GST_CAT_CALL_TRACE, "leaving function %s", name);
1392 g_free (stack_trace->data);
1393 stack_trace = g_slist_delete_link (stack_trace, stack_trace);
1399 * gst_debug_print_stack_trace:
1401 * If GST_ENABLE_FUNC_INSTRUMENTATION is defined a stacktrace is available for
1402 * gstreamer code, which can be printed with this function.
1405 gst_debug_print_stack_trace (void)
1407 GSList *walk = stack_trace;
1411 walk = g_slist_next (walk);
1414 gchar *name = (gchar *) walk->data;
1416 g_print ("#%-2d %s\n", count++, name);
1418 walk = g_slist_next (walk);
1423 gst_debug_print_stack_trace (void)
1425 /* nothing because it's compiled out */
1428 #endif /* GST_ENABLE_FUNC_INSTRUMENTATION */