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 # define WIN32_LEAN_AND_MEAN /* prevents from including too many things */
109 # include <windows.h> /* GetStdHandle, windows console */
112 #include "gst_private.h"
113 #include "gstutils.h"
114 #include "gstsegment.h"
115 #ifdef HAVE_VALGRIND_H
116 # include <valgrind/valgrind.h>
118 #include <glib/gprintf.h> /* g_sprintf */
120 /* underscore is to prevent conflict with GST_CAT_DEBUG define */
121 GST_DEBUG_CATEGORY_STATIC (_GST_CAT_DEBUG);
123 /* time of initialization, so we get useful debugging output times
124 * FIXME: we use this in gstdebugutils.c, what about a function + macro to
125 * get the running time: GST_DEBUG_RUNNING_TIME
127 GstClockTime _priv_gst_info_start_time;
131 #include <rld_interface.h>
132 typedef struct DL_INFO
134 const char *dli_fname;
136 const char *dli_sname;
140 long dli_reserved[4];
144 #define _RLD_DLADDR 14
145 int dladdr (void *address, Dl_info * dl);
148 dladdr (void *address, Dl_info * dl)
152 v = _rld_new_interface (_RLD_DLADDR, address, dl);
158 static void gst_debug_reset_threshold (gpointer category, gpointer unused);
159 static void gst_debug_reset_all_thresholds (void);
161 #ifdef HAVE_PRINTF_EXTENSION
162 static int _gst_info_printf_extension_ptr (FILE * stream,
163 const struct printf_info *info, const void *const *args);
164 static int _gst_info_printf_extension_segment (FILE * stream,
165 const struct printf_info *info, const void *const *args);
166 static int _gst_info_printf_extension_arginfo (const struct printf_info *info,
167 size_t n, int *argtypes);
170 struct _GstDebugMessage
177 /* list of all name/level pairs from --gst-debug and GST_DEBUG */
178 static GStaticMutex __level_name_mutex = G_STATIC_MUTEX_INIT;
179 static GSList *__level_name = NULL;
187 /* list of all categories */
188 static GStaticMutex __cat_mutex = G_STATIC_MUTEX_INIT;
189 static GSList *__categories = NULL;
191 /* all registered debug handlers */
198 static GStaticMutex __log_func_mutex = G_STATIC_MUTEX_INIT;
199 static GSList *__log_functions = NULL;
201 static gint __default_level;
202 static gint __use_color;
204 /* disabled by default, as soon as some threshold is set > NONE,
205 * it becomes enabled. */
206 gboolean __gst_debug_enabled = FALSE;
207 GstDebugLevel __gst_debug_min = GST_LEVEL_NONE;
209 GstDebugCategory *GST_CAT_DEFAULT = NULL;
211 GstDebugCategory *GST_CAT_GST_INIT = NULL;
212 GstDebugCategory *GST_CAT_AUTOPLUG = NULL;
213 GstDebugCategory *GST_CAT_AUTOPLUG_ATTEMPT = NULL;
214 GstDebugCategory *GST_CAT_PARENTAGE = NULL;
215 GstDebugCategory *GST_CAT_STATES = NULL;
216 GstDebugCategory *GST_CAT_SCHEDULING = NULL;
218 GstDebugCategory *GST_CAT_BUFFER = NULL;
219 GstDebugCategory *GST_CAT_BUS = NULL;
220 GstDebugCategory *GST_CAT_CAPS = NULL;
221 GstDebugCategory *GST_CAT_CLOCK = NULL;
222 GstDebugCategory *GST_CAT_ELEMENT_PADS = NULL;
223 GstDebugCategory *GST_CAT_PADS = NULL;
224 GstDebugCategory *GST_CAT_PIPELINE = NULL;
225 GstDebugCategory *GST_CAT_PLUGIN_LOADING = NULL;
226 GstDebugCategory *GST_CAT_PLUGIN_INFO = NULL;
227 GstDebugCategory *GST_CAT_PROPERTIES = NULL;
228 GstDebugCategory *GST_CAT_TYPES = NULL;
229 GstDebugCategory *GST_CAT_XML = NULL;
230 GstDebugCategory *GST_CAT_NEGOTIATION = NULL;
231 GstDebugCategory *GST_CAT_REFCOUNTING = NULL;
232 GstDebugCategory *GST_CAT_ERROR_SYSTEM = NULL;
233 GstDebugCategory *GST_CAT_EVENT = NULL;
234 GstDebugCategory *GST_CAT_MESSAGE = NULL;
235 GstDebugCategory *GST_CAT_PARAMS = NULL;
236 GstDebugCategory *GST_CAT_CALL_TRACE = NULL;
237 GstDebugCategory *GST_CAT_SIGNAL = NULL;
238 GstDebugCategory *GST_CAT_PROBE = NULL;
239 GstDebugCategory *GST_CAT_REGISTRY = NULL;
240 GstDebugCategory *GST_CAT_QOS = NULL;
242 /* FIXME: export this? */
244 _priv_gst_in_valgrind (void)
252 in_valgrind = GST_VG_UNCHECKED;
254 if (in_valgrind == GST_VG_UNCHECKED) {
255 #ifdef HAVE_VALGRIND_H
256 if (RUNNING_ON_VALGRIND) {
257 GST_CAT_INFO (GST_CAT_GST_INIT, "we're running inside valgrind");
258 printf ("GStreamer has detected that it is running inside valgrind.\n");
259 printf ("It might now take different code paths to ease debugging.\n");
260 printf ("Of course, this may also lead to different bugs.\n");
261 in_valgrind = GST_VG_INSIDE;
263 GST_CAT_LOG (GST_CAT_GST_INIT, "not doing extra valgrind stuff");
264 in_valgrind = GST_VG_NO_VALGRIND;
267 in_valgrind = GST_VG_NO_VALGRIND;
269 g_assert (in_valgrind == GST_VG_NO_VALGRIND ||
270 in_valgrind == GST_VG_INSIDE);
272 return (in_valgrind == GST_VG_INSIDE) ? TRUE : FALSE;
278 * Initializes the debugging system.
279 * Normally you don't want to call this, because gst_init() does it for you.
282 _gst_debug_init (void)
284 g_atomic_int_set (&__default_level, GST_LEVEL_DEFAULT);
285 g_atomic_int_set (&__use_color, 1);
287 /* get time we started for debugging messages */
288 _priv_gst_info_start_time = gst_util_get_timestamp ();
290 #ifdef HAVE_PRINTF_EXTENSION
291 register_printf_function (GST_PTR_FORMAT[0], _gst_info_printf_extension_ptr,
292 _gst_info_printf_extension_arginfo);
293 register_printf_function (GST_SEGMENT_FORMAT[0],
294 _gst_info_printf_extension_segment, _gst_info_printf_extension_arginfo);
297 /* do NOT use a single debug function before this line has been run */
298 GST_CAT_DEFAULT = _gst_debug_category_new ("default",
299 GST_DEBUG_UNDERLINE, NULL);
300 _GST_CAT_DEBUG = _gst_debug_category_new ("GST_DEBUG",
301 GST_DEBUG_BOLD | GST_DEBUG_FG_YELLOW, "debugging subsystem");
303 gst_debug_add_log_function (gst_debug_log_default, NULL);
305 /* FIXME: add descriptions here */
306 GST_CAT_GST_INIT = _gst_debug_category_new ("GST_INIT",
307 GST_DEBUG_BOLD | GST_DEBUG_FG_RED, NULL);
308 GST_CAT_AUTOPLUG = _gst_debug_category_new ("GST_AUTOPLUG",
309 GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL);
310 GST_CAT_AUTOPLUG_ATTEMPT = _gst_debug_category_new ("GST_AUTOPLUG_ATTEMPT",
311 GST_DEBUG_BOLD | GST_DEBUG_FG_CYAN | GST_DEBUG_BG_BLUE, NULL);
312 GST_CAT_PARENTAGE = _gst_debug_category_new ("GST_PARENTAGE",
313 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
314 GST_CAT_STATES = _gst_debug_category_new ("GST_STATES",
315 GST_DEBUG_BOLD | GST_DEBUG_FG_RED, NULL);
316 GST_CAT_SCHEDULING = _gst_debug_category_new ("GST_SCHEDULING",
317 GST_DEBUG_BOLD | GST_DEBUG_FG_MAGENTA, NULL);
318 GST_CAT_BUFFER = _gst_debug_category_new ("GST_BUFFER",
319 GST_DEBUG_BOLD | GST_DEBUG_BG_GREEN, NULL);
320 GST_CAT_BUS = _gst_debug_category_new ("GST_BUS", GST_DEBUG_BG_YELLOW, NULL);
321 GST_CAT_CAPS = _gst_debug_category_new ("GST_CAPS",
322 GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL);
323 GST_CAT_CLOCK = _gst_debug_category_new ("GST_CLOCK",
324 GST_DEBUG_BOLD | GST_DEBUG_FG_YELLOW, NULL);
325 GST_CAT_ELEMENT_PADS = _gst_debug_category_new ("GST_ELEMENT_PADS",
326 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
327 GST_CAT_PADS = _gst_debug_category_new ("GST_PADS",
328 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
329 GST_CAT_PIPELINE = _gst_debug_category_new ("GST_PIPELINE",
330 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
331 GST_CAT_PLUGIN_LOADING = _gst_debug_category_new ("GST_PLUGIN_LOADING",
332 GST_DEBUG_BOLD | GST_DEBUG_FG_CYAN, NULL);
333 GST_CAT_PLUGIN_INFO = _gst_debug_category_new ("GST_PLUGIN_INFO",
334 GST_DEBUG_BOLD | GST_DEBUG_FG_CYAN, NULL);
335 GST_CAT_PROPERTIES = _gst_debug_category_new ("GST_PROPERTIES",
336 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_BLUE, NULL);
337 GST_CAT_TYPES = _gst_debug_category_new ("GST_TYPES",
338 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
339 GST_CAT_XML = _gst_debug_category_new ("GST_XML",
340 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
341 GST_CAT_NEGOTIATION = _gst_debug_category_new ("GST_NEGOTIATION",
342 GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL);
343 GST_CAT_REFCOUNTING = _gst_debug_category_new ("GST_REFCOUNTING",
344 GST_DEBUG_BOLD | GST_DEBUG_FG_RED | GST_DEBUG_BG_BLUE, NULL);
345 GST_CAT_ERROR_SYSTEM = _gst_debug_category_new ("GST_ERROR_SYSTEM",
346 GST_DEBUG_BOLD | GST_DEBUG_FG_RED | GST_DEBUG_BG_WHITE, NULL);
348 GST_CAT_EVENT = _gst_debug_category_new ("GST_EVENT",
349 GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL);
350 GST_CAT_MESSAGE = _gst_debug_category_new ("GST_MESSAGE",
351 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
352 GST_CAT_PARAMS = _gst_debug_category_new ("GST_PARAMS",
353 GST_DEBUG_BOLD | GST_DEBUG_FG_BLACK | GST_DEBUG_BG_YELLOW, NULL);
354 GST_CAT_CALL_TRACE = _gst_debug_category_new ("GST_CALL_TRACE",
355 GST_DEBUG_BOLD, NULL);
356 GST_CAT_SIGNAL = _gst_debug_category_new ("GST_SIGNAL",
357 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
358 GST_CAT_PROBE = _gst_debug_category_new ("GST_PROBE",
359 GST_DEBUG_BOLD | GST_DEBUG_FG_GREEN, "pad probes");
360 GST_CAT_REGISTRY = _gst_debug_category_new ("GST_REGISTRY", 0, "registry");
361 GST_CAT_QOS = _gst_debug_category_new ("GST_QOS", 0, "QoS");
364 /* print out the valgrind message if we're in valgrind */
365 _priv_gst_in_valgrind ();
368 /* we can't do this further above, because we initialize the GST_CAT_DEFAULT struct */
369 #define GST_CAT_DEFAULT _GST_CAT_DEBUG
373 * @category: category to log
374 * @level: level of the message is in
375 * @file: the file that emitted the message, usually the __FILE__ identifier
376 * @function: the function that emitted the message
377 * @line: the line from that the message was emitted, usually __LINE__
378 * @object: the object this message relates to or NULL if none
379 * @format: a printf style format string
380 * @...: optional arguments for the format
382 * Logs the given message using the currently registered debugging handlers.
385 gst_debug_log (GstDebugCategory * category, GstDebugLevel level,
386 const gchar * file, const gchar * function, gint line,
387 GObject * object, const gchar * format, ...)
391 va_start (var_args, format);
392 gst_debug_log_valist (category, level, file, function, line, object, format,
398 * gst_debug_log_valist:
399 * @category: category to log
400 * @level: level of the message is in
401 * @file: the file that emitted the message, usually the __FILE__ identifier
402 * @function: the function that emitted the message
403 * @line: the line from that the message was emitted, usually __LINE__
404 * @object: the object this message relates to or NULL if none
405 * @format: a printf style format string
406 * @args: optional arguments for the format
408 * Logs the given message using the currently registered debugging handlers.
411 gst_debug_log_valist (GstDebugCategory * category, GstDebugLevel level,
412 const gchar * file, const gchar * function, gint line,
413 GObject * object, const gchar * format, va_list args)
415 GstDebugMessage message;
420 gchar *file_basename;
423 g_return_if_fail (category != NULL);
424 g_return_if_fail (file != NULL);
425 g_return_if_fail (function != NULL);
426 g_return_if_fail (format != NULL);
430 * The predefined macro __FILE__ is always the exact path given to the
431 * compiler with MSVC, which may or may not be the basename. We work
432 * around it at runtime to improve the readability.
434 file = file_basename = g_path_get_basename (file);
437 message.message = NULL;
438 message.format = format;
439 G_VA_COPY (message.arguments, args);
441 handler = __log_functions;
443 entry = handler->data;
444 handler = g_slist_next (handler);
445 entry->func (category, level, file, function, line, object, &message,
448 g_free (message.message);
449 va_end (message.arguments);
452 g_free (file_basename);
457 * gst_debug_message_get:
458 * @message: a debug message
460 * Gets the string representation of a #GstDebugMessage. This function is used
461 * in debug handlers to extract the message.
463 * Returns: the string representation of a #GstDebugMessage.
466 gst_debug_message_get (GstDebugMessage * message)
468 if (message->message == NULL) {
469 message->message = g_strdup_vprintf (message->format, message->arguments);
471 return message->message;
476 gst_debug_print_object (gpointer ptr)
478 GObject *object = (GObject *) ptr;
481 /* This is a cute trick to detect unmapped memory, but is unportable,
482 * slow, screws around with madvise, and not actually that useful. */
486 ret = madvise ((void *) ((unsigned long) ptr & (~0xfff)), 4096, 0);
487 if (ret == -1 && errno == ENOMEM) {
488 buffer = g_strdup_printf ("%p (unmapped memory)", ptr);
493 /* nicely printed object */
494 if (object == NULL) {
495 return g_strdup ("(NULL)");
497 if (*(GType *) ptr == GST_TYPE_CAPS) {
498 return gst_caps_to_string ((GstCaps *) ptr);
500 if (*(GType *) ptr == GST_TYPE_STRUCTURE) {
501 return gst_structure_to_string ((GstStructure *) ptr);
504 if (*(guint32 *) ptr == 0xffffffff) {
505 return g_strdup_printf ("<poisoned@%p>", ptr);
508 if (GST_IS_PAD (object) && GST_OBJECT_NAME (object)) {
509 return g_strdup_printf ("<%s:%s>", GST_DEBUG_PAD_NAME (object));
511 if (GST_IS_OBJECT (object) && GST_OBJECT_NAME (object)) {
512 return g_strdup_printf ("<%s>", GST_OBJECT_NAME (object));
514 if (G_IS_OBJECT (object)) {
515 return g_strdup_printf ("<%s@%p>", G_OBJECT_TYPE_NAME (object), object);
517 if (GST_IS_MESSAGE (object)) {
518 GstMessage *msg = GST_MESSAGE_CAST (object);
521 if (msg->structure) {
522 s = gst_structure_to_string (msg->structure);
524 s = g_strdup ("(NULL)");
527 ret = g_strdup_printf ("%s message from element '%s': %s",
528 GST_MESSAGE_TYPE_NAME (msg), (msg->src != NULL) ?
529 GST_ELEMENT_NAME (msg->src) : "(NULL)", s);
533 if (GST_IS_QUERY (object)) {
534 GstQuery *query = GST_QUERY_CAST (object);
536 if (query->structure) {
537 return gst_structure_to_string (query->structure);
539 const gchar *query_type_name;
541 query_type_name = gst_query_type_get_name (query->type);
542 if (G_LIKELY (query_type_name != NULL)) {
543 return g_strdup_printf ("%s query", query_type_name);
545 return g_strdup_printf ("query of unknown type %d", query->type);
550 return g_strdup_printf ("%p", ptr);
553 #ifdef HAVE_PRINTF_EXTENSION
556 gst_debug_print_segment (gpointer ptr)
558 GstSegment *segment = (GstSegment *) ptr;
560 /* nicely printed segment */
561 if (segment == NULL) {
562 return g_strdup ("(NULL)");
565 switch (segment->format) {
566 case GST_FORMAT_UNDEFINED:{
567 return g_strdup_printf ("UNDEFINED segment");
569 case GST_FORMAT_TIME:{
570 return g_strdup_printf ("time segment start=%" GST_TIME_FORMAT
571 ", stop=%" GST_TIME_FORMAT ", last_stop=%" GST_TIME_FORMAT
572 ", duration=%" GST_TIME_FORMAT ", rate=%f, applied_rate=%f"
573 ", flags=0x%02x, time=%" GST_TIME_FORMAT ", accum=%" GST_TIME_FORMAT,
574 GST_TIME_ARGS (segment->start), GST_TIME_ARGS (segment->stop),
575 GST_TIME_ARGS (segment->last_stop), GST_TIME_ARGS (segment->duration),
576 segment->rate, segment->applied_rate, (guint) segment->flags,
577 GST_TIME_ARGS (segment->time), GST_TIME_ARGS (segment->accum));
580 const gchar *format_name;
582 format_name = gst_format_get_name (segment->format);
583 if (G_UNLIKELY (format_name == NULL))
584 format_name = "(UNKNOWN FORMAT)";
585 return g_strdup_printf ("%s segment start=%" G_GINT64_FORMAT
586 ", stop=%" G_GINT64_FORMAT ", last_stop=%" G_GINT64_FORMAT
587 ", duration=%" G_GINT64_FORMAT ", rate=%f, applied_rate=%f"
588 ", flags=0x%02x, time=%" GST_TIME_FORMAT ", accum=%" GST_TIME_FORMAT,
589 format_name, segment->start, segment->stop, segment->last_stop,
590 segment->duration, segment->rate, segment->applied_rate,
591 (guint) segment->flags, GST_TIME_ARGS (segment->time),
592 GST_TIME_ARGS (segment->accum));
597 #endif /* HAVE_PRINTF_EXTENSION */
600 * gst_debug_construct_term_color:
601 * @colorinfo: the color info
603 * Constructs a string that can be used for getting the desired color in color
605 * You need to free the string after use.
607 * Returns: a string containing the color definition
610 gst_debug_construct_term_color (guint colorinfo)
614 color = g_string_new ("\033[00");
616 if (colorinfo & GST_DEBUG_BOLD) {
617 g_string_append_len (color, ";01", 3);
619 if (colorinfo & GST_DEBUG_UNDERLINE) {
620 g_string_append_len (color, ";04", 3);
622 if (colorinfo & GST_DEBUG_FG_MASK) {
623 g_string_append_printf (color, ";3%1d", colorinfo & GST_DEBUG_FG_MASK);
625 if (colorinfo & GST_DEBUG_BG_MASK) {
626 g_string_append_printf (color, ";4%1d",
627 (colorinfo & GST_DEBUG_BG_MASK) >> 4);
629 g_string_append_c (color, 'm');
631 return g_string_free (color, FALSE);
635 * gst_debug_construct_win_color:
636 * @colorinfo: the color info
638 * Constructs an integer that can be used for getting the desired color in
639 * windows' terminals (cmd.exe). As there is no mean to underline, we simply
640 * ignore this attribute.
642 * This function returns 0 on non-windows machines.
644 * Returns: an integer containing the color definition
649 gst_debug_construct_win_color (guint colorinfo)
653 static const guchar ansi_to_win_fg[8] = {
655 FOREGROUND_RED, /* red */
656 FOREGROUND_GREEN, /* green */
657 FOREGROUND_RED | FOREGROUND_GREEN, /* yellow */
658 FOREGROUND_BLUE, /* blue */
659 FOREGROUND_RED | FOREGROUND_BLUE, /* magenta */
660 FOREGROUND_GREEN | FOREGROUND_BLUE, /* cyan */
661 FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE /* white */
663 static const guchar ansi_to_win_bg[8] = {
667 BACKGROUND_RED | BACKGROUND_GREEN,
669 BACKGROUND_RED | BACKGROUND_BLUE,
670 BACKGROUND_GREEN | FOREGROUND_BLUE,
671 BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE
674 /* we draw black as white, as cmd.exe can only have black bg */
675 if (colorinfo == 0) {
676 return ansi_to_win_fg[7];
679 if (colorinfo & GST_DEBUG_BOLD) {
680 color |= FOREGROUND_INTENSITY;
682 if (colorinfo & GST_DEBUG_FG_MASK) {
683 color |= ansi_to_win_fg[colorinfo & GST_DEBUG_FG_MASK];
685 if (colorinfo & GST_DEBUG_BG_MASK) {
686 color |= ansi_to_win_bg[(colorinfo & GST_DEBUG_BG_MASK) >> 4];
692 /* width of %p varies depending on actual value of pointer, which can make
693 * output unevenly aligned if multiple threads are involved, hence the %14p
694 * (should really be %18p, but %14p seems a good compromise between too many
695 * white spaces and likely unalignment on my system) */
696 #if defined (GLIB_SIZEOF_VOID_P) && GLIB_SIZEOF_VOID_P == 8
697 #define PTR_FMT "%14p"
699 #define PTR_FMT "%10p"
701 #define PID_FMT "%5d"
702 #define CAT_FMT "%20s %s:%d:%s:%s"
705 static const guchar levelcolormap[] = {
707 FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE,
708 /* GST_LEVEL_ERROR */
709 FOREGROUND_RED | FOREGROUND_INTENSITY,
710 /* GST_LEVEL_WARNING */
711 FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_INTENSITY,
713 FOREGROUND_GREEN | FOREGROUND_INTENSITY,
714 /* GST_LEVEL_DEBUG */
715 FOREGROUND_GREEN | FOREGROUND_BLUE,
717 FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE
720 static const guchar available_colors[6] = {
721 FOREGROUND_RED, FOREGROUND_GREEN, FOREGROUND_RED | FOREGROUND_GREEN,
722 FOREGROUND_BLUE, FOREGROUND_RED | FOREGROUND_BLUE,
723 FOREGROUND_GREEN | FOREGROUND_BLUE,
726 static const gchar *levelcolormap[] = {
727 "\033[37m", /* GST_LEVEL_NONE */
728 "\033[31;01m", /* GST_LEVEL_ERROR */
729 "\033[33;01m", /* GST_LEVEL_WARNING */
730 "\033[32;01m", /* GST_LEVEL_INFO */
731 "\033[36m", /* GST_LEVEL_DEBUG */
732 "\033[37m" /* GST_LEVEL_LOG */
737 * gst_debug_log_default:
738 * @category: category to log
739 * @level: level of the message
740 * @file: the file that emitted the message, usually the __FILE__ identifier
741 * @function: the function that emitted the message
742 * @line: the line from that the message was emitted, usually __LINE__
743 * @message: the actual message
744 * @object: the object this message relates to or NULL if none
745 * @unused: an unused variable, reserved for some user_data.
747 * The default logging handler used by GStreamer. Logging functions get called
748 * whenever a macro like GST_DEBUG or similar is used. This function outputs the
749 * message and additional info using the glib error handler.
750 * You can add other handlers by using gst_debug_add_log_function().
751 * And you can remove this handler by calling
752 * gst_debug_remove_log_function(gst_debug_log_default);
755 gst_debug_log_default (GstDebugCategory * category, GstDebugLevel level,
756 const gchar * file, const gchar * function, gint line,
757 GObject * object, GstDebugMessage * message, gpointer unused)
760 GstClockTime elapsed;
762 gboolean free_obj = TRUE;
765 if (level > gst_debug_category_get_threshold (category))
769 is_colored = gst_debug_is_colored ();
771 elapsed = GST_CLOCK_DIFF (_priv_gst_info_start_time,
772 gst_util_get_timestamp ());
775 obj = gst_debug_print_object (object);
786 const gchar *levelcolor;
788 color = gst_debug_construct_term_color (gst_debug_category_get_color
791 g_sprintf (pidcolor, "\033[3%1dm", pid % 6 + 31);
792 levelcolor = levelcolormap[level];
794 #define PRINT_FMT " %s"PID_FMT"%s "PTR_FMT" %s%s%s %s"CAT_FMT"%s %s\n"
795 g_printerr ("%" GST_TIME_FORMAT PRINT_FMT, GST_TIME_ARGS (elapsed),
796 pidcolor, pid, clear, g_thread_self (), levelcolor,
797 gst_debug_level_get_name (level), clear, color,
798 gst_debug_category_get_name (category), file, line, function, obj,
799 clear, gst_debug_message_get (message));
803 const gint clear = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE;
804 #define SET_COLOR(c) \
805 SetConsoleTextAttribute (GetStdHandle (STD_ERROR_HANDLE), (c));
807 g_printerr ("%" GST_TIME_FORMAT " ", GST_TIME_ARGS (elapsed));
809 SET_COLOR (available_colors[pid % 6]);
810 g_printerr (PID_FMT, pid);
813 g_printerr (" " PTR_FMT " ", g_thread_self ());
815 SET_COLOR (levelcolormap[level]);
816 g_printerr ("%s ", gst_debug_level_get_name (level));
818 SET_COLOR (gst_debug_construct_win_color (gst_debug_category_get_color
820 g_printerr (CAT_FMT, gst_debug_category_get_name (category),
821 file, line, function, obj);
824 g_printerr (" %s\n", gst_debug_message_get (message));
827 #define PRINT_FMT " "PID_FMT" "PTR_FMT" %s "CAT_FMT" %s\n"
828 g_printerr ("%" GST_TIME_FORMAT PRINT_FMT, GST_TIME_ARGS (elapsed), pid,
829 g_thread_self (), gst_debug_level_get_name (level),
830 gst_debug_category_get_name (category), file, line, function, obj,
831 gst_debug_message_get (message));
840 * gst_debug_level_get_name:
841 * @level: the level to get the name for
843 * Get the string representation of a debugging level
848 gst_debug_level_get_name (GstDebugLevel level)
853 case GST_LEVEL_ERROR:
855 case GST_LEVEL_WARNING:
859 case GST_LEVEL_DEBUG:
864 g_warning ("invalid level specified for gst_debug_level_get_name");
870 * gst_debug_add_log_function:
871 * @func: the function to use
874 * Adds the logging function to the list of logging functions.
875 * Be sure to use G_GNUC_NO_INSTRUMENT on that function, it is needed.
878 gst_debug_add_log_function (GstLogFunction func, gpointer data)
883 g_return_if_fail (func != NULL);
885 entry = g_new (LogFuncEntry, 1);
887 entry->user_data = data;
888 /* FIXME: we leak the old list here - other threads might access it right now
889 * in gst_debug_logv. Another solution is to lock the mutex in gst_debug_logv,
890 * but that is waaay costly.
891 * It'd probably be clever to use some kind of RCU here, but I don't know
892 * anything about that.
894 g_static_mutex_lock (&__log_func_mutex);
895 list = g_slist_copy (__log_functions);
896 __log_functions = g_slist_prepend (list, entry);
897 g_static_mutex_unlock (&__log_func_mutex);
899 GST_DEBUG ("prepended log function %p (user data %p) to log functions",
904 gst_debug_compare_log_function_by_func (gconstpointer entry, gconstpointer func)
906 gpointer entryfunc = (gpointer) (((LogFuncEntry *) entry)->func);
908 return (entryfunc < func) ? -1 : (entryfunc > func) ? 1 : 0;
912 gst_debug_compare_log_function_by_data (gconstpointer entry, gconstpointer data)
914 gpointer entrydata = ((LogFuncEntry *) entry)->user_data;
916 return (entrydata < data) ? -1 : (entrydata > data) ? 1 : 0;
920 gst_debug_remove_with_compare_func (GCompareFunc func, gpointer data)
926 g_static_mutex_lock (&__log_func_mutex);
927 new = __log_functions;
928 while ((found = g_slist_find_custom (new, data, func))) {
929 if (new == __log_functions) {
930 /* make a copy when we have the first hit, so that we modify the copy and
931 * make that the new list later */
932 new = g_slist_copy (new);
935 g_free (found->data);
936 new = g_slist_delete_link (new, found);
939 /* FIXME: We leak the old list here. See _add_log_function for why. */
940 __log_functions = new;
941 g_static_mutex_unlock (&__log_func_mutex);
947 * gst_debug_remove_log_function:
948 * @func: the log function to remove
950 * Removes all registered instances of the given logging functions.
952 * Returns: How many instances of the function were removed
955 gst_debug_remove_log_function (GstLogFunction func)
959 g_return_val_if_fail (func != NULL, 0);
962 gst_debug_remove_with_compare_func
963 (gst_debug_compare_log_function_by_func, (gpointer) func);
964 GST_DEBUG ("removed log function %p %d times from log function list", func,
971 * gst_debug_remove_log_function_by_data:
972 * @data: user data of the log function to remove
974 * Removes all registered instances of log functions with the given user data.
976 * Returns: How many instances of the function were removed
979 gst_debug_remove_log_function_by_data (gpointer data)
984 gst_debug_remove_with_compare_func
985 (gst_debug_compare_log_function_by_data, data);
987 ("removed %d log functions with user data %p from log function list",
994 * gst_debug_set_colored:
995 * @colored: Whether to use colored output or not
997 * Sets or unsets the use of coloured debugging output.
1000 gst_debug_set_colored (gboolean colored)
1002 g_atomic_int_set (&__use_color, colored ? 1 : 0);
1006 * gst_debug_is_colored:
1008 * Checks if the debugging output should be colored.
1010 * Returns: TRUE, if the debug output should be colored.
1013 gst_debug_is_colored (void)
1015 return g_atomic_int_get (&__use_color) == 0 ? FALSE : TRUE;
1019 * gst_debug_set_active:
1020 * @active: Whether to use debugging output or not
1022 * If activated, debugging messages are sent to the debugging
1024 * It makes sense to deactivate it for speed issues.
1025 * <note><para>This function is not threadsafe. It makes sense to only call it
1026 * during initialization.</para></note>
1029 gst_debug_set_active (gboolean active)
1031 __gst_debug_enabled = active;
1033 __gst_debug_min = GST_LEVEL_COUNT;
1035 __gst_debug_min = GST_LEVEL_NONE;
1039 * gst_debug_is_active:
1041 * Checks if debugging output is activated.
1043 * Returns: TRUE, if debugging is activated
1046 gst_debug_is_active (void)
1048 return __gst_debug_enabled;
1052 * gst_debug_set_default_threshold:
1053 * @level: level to set
1055 * Sets the default threshold to the given level and updates all categories to
1056 * use this threshold.
1059 gst_debug_set_default_threshold (GstDebugLevel level)
1061 g_atomic_int_set (&__default_level, level);
1062 gst_debug_reset_all_thresholds ();
1066 * gst_debug_get_default_threshold:
1068 * Returns the default threshold that is used for new categories.
1070 * Returns: the default threshold level
1073 gst_debug_get_default_threshold (void)
1075 return (GstDebugLevel) g_atomic_int_get (&__default_level);
1079 gst_debug_reset_threshold (gpointer category, gpointer unused)
1081 GstDebugCategory *cat = (GstDebugCategory *) category;
1084 g_static_mutex_lock (&__level_name_mutex);
1085 walk = __level_name;
1087 LevelNameEntry *entry = walk->data;
1089 walk = g_slist_next (walk);
1090 if (g_pattern_match_string (entry->pat, cat->name)) {
1091 GST_LOG ("category %s matches pattern %p - gets set to level %d",
1092 cat->name, entry->pat, entry->level);
1093 gst_debug_category_set_threshold (cat, entry->level);
1097 gst_debug_category_set_threshold (cat, gst_debug_get_default_threshold ());
1100 g_static_mutex_unlock (&__level_name_mutex);
1104 gst_debug_reset_all_thresholds (void)
1106 g_static_mutex_lock (&__cat_mutex);
1107 g_slist_foreach (__categories, gst_debug_reset_threshold, NULL);
1108 g_static_mutex_unlock (&__cat_mutex);
1112 for_each_threshold_by_entry (gpointer data, gpointer user_data)
1114 GstDebugCategory *cat = (GstDebugCategory *) data;
1115 LevelNameEntry *entry = (LevelNameEntry *) user_data;
1117 if (g_pattern_match_string (entry->pat, cat->name)) {
1118 GST_LOG ("category %s matches pattern %p - gets set to level %d",
1119 cat->name, entry->pat, entry->level);
1120 gst_debug_category_set_threshold (cat, entry->level);
1125 * gst_debug_set_threshold_for_name:
1126 * @name: name of the categories to set
1127 * @level: level to set them to
1129 * Sets all categories which match the given glob style pattern to the given
1133 gst_debug_set_threshold_for_name (const gchar * name, GstDebugLevel level)
1136 LevelNameEntry *entry;
1138 g_return_if_fail (name != NULL);
1140 pat = g_pattern_spec_new (name);
1141 entry = g_new (LevelNameEntry, 1);
1143 entry->level = level;
1144 g_static_mutex_lock (&__level_name_mutex);
1145 __level_name = g_slist_prepend (__level_name, entry);
1146 g_static_mutex_unlock (&__level_name_mutex);
1147 g_static_mutex_lock (&__cat_mutex);
1148 g_slist_foreach (__categories, for_each_threshold_by_entry, entry);
1149 g_static_mutex_unlock (&__cat_mutex);
1153 * gst_debug_unset_threshold_for_name:
1154 * @name: name of the categories to set
1156 * Resets all categories with the given name back to the default level.
1159 gst_debug_unset_threshold_for_name (const gchar * name)
1164 g_return_if_fail (name != NULL);
1166 pat = g_pattern_spec_new (name);
1167 g_static_mutex_lock (&__level_name_mutex);
1168 walk = __level_name;
1169 /* improve this if you want, it's mighty slow */
1171 LevelNameEntry *entry = walk->data;
1173 if (g_pattern_spec_equal (entry->pat, pat)) {
1174 __level_name = g_slist_remove_link (__level_name, walk);
1175 g_pattern_spec_free (entry->pat);
1177 g_slist_free_1 (walk);
1178 walk = __level_name;
1181 g_static_mutex_unlock (&__level_name_mutex);
1182 g_pattern_spec_free (pat);
1183 gst_debug_reset_all_thresholds ();
1187 _gst_debug_category_new (const gchar * name, guint color,
1188 const gchar * description)
1190 GstDebugCategory *cat;
1192 g_return_val_if_fail (name != NULL, NULL);
1194 cat = g_new (GstDebugCategory, 1);
1195 cat->name = g_strdup (name);
1197 if (description != NULL) {
1198 cat->description = g_strdup (description);
1200 cat->description = g_strdup ("no description");
1202 g_atomic_int_set (&cat->threshold, 0);
1203 gst_debug_reset_threshold (cat, NULL);
1205 /* add to category list */
1206 g_static_mutex_lock (&__cat_mutex);
1207 __categories = g_slist_prepend (__categories, cat);
1208 g_static_mutex_unlock (&__cat_mutex);
1214 * gst_debug_category_free:
1215 * @category: #GstDebugCategory to free.
1217 * Removes and frees the category and all associated resources.
1220 gst_debug_category_free (GstDebugCategory * category)
1222 if (category == NULL)
1225 /* remove from category list */
1226 g_static_mutex_lock (&__cat_mutex);
1227 __categories = g_slist_remove (__categories, category);
1228 g_static_mutex_unlock (&__cat_mutex);
1230 g_free ((gpointer) category->name);
1231 g_free ((gpointer) category->description);
1236 * gst_debug_category_set_threshold:
1237 * @category: a #GstDebugCategory to set threshold of.
1238 * @level: the #GstDebugLevel threshold to set.
1240 * Sets the threshold of the category to the given level. Debug information will
1241 * only be output if the threshold is lower or equal to the level of the
1242 * debugging message.
1244 * Do not use this function in production code, because other functions may
1245 * change the threshold of categories as side effect. It is however a nice
1246 * function to use when debugging (even from gdb).
1250 gst_debug_category_set_threshold (GstDebugCategory * category,
1251 GstDebugLevel level)
1253 g_return_if_fail (category != NULL);
1255 if (level > __gst_debug_min) {
1256 __gst_debug_enabled = TRUE;
1257 __gst_debug_min = level;
1260 g_atomic_int_set (&category->threshold, level);
1264 * gst_debug_category_reset_threshold:
1265 * @category: a #GstDebugCategory to reset threshold of.
1267 * Resets the threshold of the category to the default level. Debug information
1268 * will only be output if the threshold is lower or equal to the level of the
1269 * debugging message.
1270 * Use this function to set the threshold back to where it was after using
1271 * gst_debug_category_set_threshold().
1274 gst_debug_category_reset_threshold (GstDebugCategory * category)
1276 gst_debug_reset_threshold (category, NULL);
1280 * gst_debug_category_get_threshold:
1281 * @category: a #GstDebugCategory to get threshold of.
1283 * Returns the threshold of a #GstDebugCategory.
1285 * Returns: the #GstDebugLevel that is used as threshold.
1288 gst_debug_category_get_threshold (GstDebugCategory * category)
1290 return g_atomic_int_get (&category->threshold);
1294 * gst_debug_category_get_name:
1295 * @category: a #GstDebugCategory to get name of.
1297 * Returns the name of a debug category.
1299 * Returns: the name of the category.
1302 gst_debug_category_get_name (GstDebugCategory * category)
1304 return category->name;
1308 * gst_debug_category_get_color:
1309 * @category: a #GstDebugCategory to get the color of.
1311 * Returns the color of a debug category used when printing output in this
1314 * Returns: the color of the category.
1317 gst_debug_category_get_color (GstDebugCategory * category)
1319 return category->color;
1323 * gst_debug_category_get_description:
1324 * @category: a #GstDebugCategory to get the description of.
1326 * Returns the description of a debug category.
1328 * Returns: the description of the category.
1331 gst_debug_category_get_description (GstDebugCategory * category)
1333 return category->description;
1337 * gst_debug_get_all_categories:
1339 * Returns a snapshot of a all categories that are currently in use . This list
1340 * may change anytime.
1341 * The caller has to free the list after use.
1343 * Returns: the list of categories
1346 gst_debug_get_all_categories (void)
1350 g_static_mutex_lock (&__cat_mutex);
1351 ret = g_slist_copy (__categories);
1352 g_static_mutex_unlock (&__cat_mutex);
1357 /*** FUNCTION POINTERS ********************************************************/
1359 static GHashTable *__gst_function_pointers; /* NULL */
1360 static GStaticMutex __dbg_functions_mutex = G_STATIC_MUTEX_INIT;
1363 _gst_debug_nameof_funcptr (GstDebugFuncPtr ptr)
1364 G_GNUC_NO_INSTRUMENT;
1366 /* This function MUST NOT return NULL */
1367 const gchar *_gst_debug_nameof_funcptr (GstDebugFuncPtr func)
1375 if (G_UNLIKELY (func == NULL))
1378 g_static_mutex_lock (&__dbg_functions_mutex);
1379 if (G_LIKELY (__gst_function_pointers)) {
1380 ptrname = g_hash_table_lookup (__gst_function_pointers, (gpointer) func);
1381 g_static_mutex_unlock (&__dbg_functions_mutex);
1382 if (G_LIKELY (ptrname))
1385 g_static_mutex_unlock (&__dbg_functions_mutex);
1387 /* we need to create an entry in the hash table for this one so we don't leak
1390 if (dladdr ((gpointer) func, &dl_info) && dl_info.dli_sname) {
1391 gchar *name = g_strdup (dl_info.dli_sname);
1393 _gst_debug_register_funcptr (func, name);
1398 gchar *name = g_strdup_printf ("%p", (gpointer) func);
1400 _gst_debug_register_funcptr (func, name);
1406 _gst_debug_register_funcptr (GstDebugFuncPtr func, const gchar * ptrname)
1408 gpointer ptr = (gpointer) func;
1410 g_static_mutex_lock (&__dbg_functions_mutex);
1412 if (!__gst_function_pointers)
1413 __gst_function_pointers = g_hash_table_new (g_direct_hash, g_direct_equal);
1414 if (!g_hash_table_lookup (__gst_function_pointers, ptr))
1415 g_hash_table_insert (__gst_function_pointers, ptr, (gpointer) ptrname);
1417 g_static_mutex_unlock (&__dbg_functions_mutex);
1420 /*** PRINTF EXTENSIONS ********************************************************/
1422 #ifdef HAVE_PRINTF_EXTENSION
1424 _gst_info_printf_extension_ptr (FILE * stream, const struct printf_info *info,
1425 const void *const *args)
1432 ptr = *(void **) args[0];
1434 buffer = gst_debug_print_object (ptr);
1435 len = fprintf (stream, "%*s", (info->left ? -info->width : info->width),
1443 _gst_info_printf_extension_segment (FILE * stream,
1444 const struct printf_info *info, const void *const *args)
1451 ptr = *(void **) args[0];
1453 buffer = gst_debug_print_segment (ptr);
1454 len = fprintf (stream, "%*s", (info->left ? -info->width : info->width),
1462 _gst_info_printf_extension_arginfo (const struct printf_info *info, size_t n,
1466 argtypes[0] = PA_POINTER;
1469 #endif /* HAVE_PRINTF_EXTENSION */
1471 #else /* !GST_DISABLE_GST_DEBUG */
1472 #ifndef GST_REMOVE_DISABLED
1474 gst_debug_log (GstDebugCategory * category, GstDebugLevel level,
1475 const gchar * file, const gchar * function, gint line,
1476 GObject * object, const gchar * format, ...)
1481 gst_debug_log_valist (GstDebugCategory * category, GstDebugLevel level,
1482 const gchar * file, const gchar * function, gint line,
1483 GObject * object, const gchar * format, va_list args)
1488 gst_debug_message_get (GstDebugMessage * message)
1494 gst_debug_construct_term_color (guint colorinfo)
1496 return g_strdup ("");
1500 gst_debug_construct_win_color (guint colorinfo)
1506 gst_debug_log_default (GstDebugCategory * category, GstDebugLevel level,
1507 const gchar * file, const gchar * function, gint line,
1508 GObject * object, GstDebugMessage * message, gpointer unused)
1513 gst_debug_level_get_name (GstDebugLevel level)
1519 gst_debug_add_log_function (GstLogFunction func, gpointer data)
1524 gst_debug_remove_log_function (GstLogFunction func)
1530 gst_debug_remove_log_function_by_data (gpointer data)
1536 _priv_gst_in_valgrind (void)
1540 #endif /* GST_REMOVE_DISABLED */
1541 #endif /* GST_DISABLE_GST_DEBUG */
1544 #ifdef GST_ENABLE_FUNC_INSTRUMENTATION
1545 /* FIXME make this thread specific */
1546 static GSList *stack_trace = NULL;
1549 __cyg_profile_func_enter (void *this_fn, void *call_site)
1550 G_GNUC_NO_INSTRUMENT;
1551 void __cyg_profile_func_enter (void *this_fn, void *call_site)
1553 gchar *name = _gst_debug_nameof_funcptr (this_fn);
1554 gchar *site = _gst_debug_nameof_funcptr (call_site);
1556 GST_CAT_DEBUG (GST_CAT_CALL_TRACE, "entering function %s from %s", name,
1559 g_slist_prepend (stack_trace, g_strdup_printf ("%8p in %s from %p (%s)",
1560 this_fn, name, call_site, site));
1567 __cyg_profile_func_exit (void *this_fn, void *call_site)
1568 G_GNUC_NO_INSTRUMENT;
1569 void __cyg_profile_func_exit (void *this_fn, void *call_site)
1571 gchar *name = _gst_debug_nameof_funcptr (this_fn);
1573 GST_CAT_DEBUG (GST_CAT_CALL_TRACE, "leaving function %s", name);
1574 g_free (stack_trace->data);
1575 stack_trace = g_slist_delete_link (stack_trace, stack_trace);
1581 * gst_debug_print_stack_trace:
1583 * If GST_ENABLE_FUNC_INSTRUMENTATION is defined a stacktrace is available for
1584 * gstreamer code, which can be printed with this function.
1587 gst_debug_print_stack_trace (void)
1589 GSList *walk = stack_trace;
1593 walk = g_slist_next (walk);
1596 gchar *name = (gchar *) walk->data;
1598 g_print ("#%-2d %s\n", count++, name);
1600 walk = g_slist_next (walk);
1605 gst_debug_print_stack_trace (void)
1607 /* nothing because it's compiled out */
1610 #endif /* GST_ENABLE_FUNC_INSTRUMENTATION */