/* GStreamer * Copyright (C) 1999,2000 Erik Walthinsen * 2000 Wim Taymans * 2003 Benjamin Otte * * gstinfo.c: debugging functions * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /** * SECTION:gstinfo * @short_description: Debugging and logging facillities * @see_also: #GstConfig, #Gst for command line parameters * and environment variables that affect the debugging output. * * GStreamer's debugging subsystem is an easy way to get information about what * the application is doing. It is not meant for programming errors. Use GLib * methods (g_warning and friends) for that. * * The debugging subsystem works only after GStreamer has been initialized * - for example by calling gst_init(). * * The debugging subsystem is used to log informational messages while the * application runs. Each messages has some properties attached to it. Among * these properties are the debugging category, the severity (called "level" * here) and an optional #GObject it belongs to. Each of these messages is sent * to all registered debugging handlers, which then handle the messages. * GStreamer attaches a default handler on startup, which outputs requested * messages to stderr. * * Messages are output by using shortcut macros like #GST_DEBUG, * #GST_CAT_ERROR_OBJECT or similar. These all expand to calling gst_debug_log() * with the right parameters. * The only thing a developer will probably want to do is define his own * categories. This is easily done with 3 lines. At the top of your code, * declare * the variables and set the default category. * * * GST_DEBUG_CATEGORY (my_category); // define category * &hash;define GST_CAT_DEFAULT my_category // set as default * * * After that you only need to initialize the category. * * * GST_DEBUG_CATEGORY_INIT (my_category, "my category", * 0, "This is my very own"); * * * Initialization must be done before the category is used first. * Plugins do this * in their plugin_init function, libraries and applications should do that * during their initialization. * * The whole debugging subsystem can be disabled at build time with passing the * --disable-gst-debug switch to configure. If this is done, every function, * macro and even structs described in this file evaluate to default values or * nothing at all. * So don't take addresses of these functions or use other tricks. * If you must do that for some reason, there is still an option. * If the debugging * subsystem was compiled out, #GST_DISABLE_GST_DEBUG is defined in * <gst/gst.h>, * so you can check that before doing your trick. * Disabling the debugging subsystem will give you a slight (read: unnoticable) * speed increase and will reduce the size of your compiled code. The GStreamer * library itself becomes around 10% smaller. * * Please note that there are naming conventions for the names of debugging * categories. These are explained at GST_DEBUG_CATEGORY_INIT(). */ #include "gst_private.h" #include "gstinfo.h" #ifndef GST_DISABLE_GST_DEBUG #ifdef HAVE_DLFCN_H # include #endif #ifdef HAVE_PRINTF_EXTENSION # include #endif #include /* fprintf */ #ifdef HAVE_UNISTD_H # include /* getpid on UNIX */ #endif #ifdef HAVE_PROCESS_H # include /* getpid on win32 */ #endif #include /* G_VA_COPY */ #include "gst_private.h" #include "gstutils.h" #ifdef HAVE_VALGRIND # include #endif #include /* g_sprintf */ /* underscore is to prevent conflict with GST_CAT_DEBUG define */ GST_DEBUG_CATEGORY_STATIC (_GST_CAT_DEBUG); /* time of initialization, so we get useful debugging output times */ static GstClockTime start_time; #if 0 #if defined __sgi__ #include typedef struct DL_INFO { const char *dli_fname; void *dli_fbase; const char *dli_sname; void *dli_saddr; int dli_version; int dli_reserved1; long dli_reserved[4]; } Dl_info; #define _RLD_DLADDR 14 int dladdr (void *address, Dl_info * dl); int dladdr (void *address, Dl_info * dl) { void *v; v = _rld_new_interface (_RLD_DLADDR, address, dl); return (int) v; } #endif /* __sgi__ */ #endif static void gst_debug_reset_threshold (gpointer category, gpointer unused); static void gst_debug_reset_all_thresholds (void); #ifdef HAVE_PRINTF_EXTENSION static int _gst_info_printf_extension (FILE * stream, const struct printf_info *info, const void *const *args); static int _gst_info_printf_extension_arginfo (const struct printf_info *info, size_t n, int *argtypes); #endif struct _GstDebugMessage { gchar *message; const gchar *format; va_list arguments; }; /* list of all name/level pairs from --gst-debug and GST_DEBUG */ static GStaticMutex __level_name_mutex = G_STATIC_MUTEX_INIT; static GSList *__level_name = NULL; typedef struct { GPatternSpec *pat; GstDebugLevel level; } LevelNameEntry; /* list of all categories */ static GStaticMutex __cat_mutex = G_STATIC_MUTEX_INIT; static GSList *__categories = NULL; /* all registered debug handlers */ typedef struct { GstLogFunction func; gpointer user_data; } LogFuncEntry; static GStaticMutex __log_func_mutex = G_STATIC_MUTEX_INIT; static GSList *__log_functions = NULL; static gint __default_level; static gint __use_color; /* disabled by default, as soon as some threshold is set > NONE, * it becomes enabled. */ gboolean __gst_debug_enabled = FALSE; GstDebugLevel __gst_debug_min = GST_LEVEL_NONE; GstDebugCategory *GST_CAT_DEFAULT = NULL; GstDebugCategory *GST_CAT_GST_INIT = NULL; GstDebugCategory *GST_CAT_AUTOPLUG = NULL; GstDebugCategory *GST_CAT_AUTOPLUG_ATTEMPT = NULL; GstDebugCategory *GST_CAT_PARENTAGE = NULL; GstDebugCategory *GST_CAT_STATES = NULL; GstDebugCategory *GST_CAT_SCHEDULING = NULL; GstDebugCategory *GST_CAT_BUFFER = NULL; GstDebugCategory *GST_CAT_BUS = NULL; GstDebugCategory *GST_CAT_CAPS = NULL; GstDebugCategory *GST_CAT_CLOCK = NULL; GstDebugCategory *GST_CAT_ELEMENT_PADS = NULL; GstDebugCategory *GST_CAT_PADS = NULL; GstDebugCategory *GST_CAT_PIPELINE = NULL; GstDebugCategory *GST_CAT_PLUGIN_LOADING = NULL; GstDebugCategory *GST_CAT_PLUGIN_INFO = NULL; GstDebugCategory *GST_CAT_PROPERTIES = NULL; GstDebugCategory *GST_CAT_TYPES = NULL; GstDebugCategory *GST_CAT_XML = NULL; GstDebugCategory *GST_CAT_NEGOTIATION = NULL; GstDebugCategory *GST_CAT_REFCOUNTING = NULL; GstDebugCategory *GST_CAT_ERROR_SYSTEM = NULL; GstDebugCategory *GST_CAT_EVENT = NULL; GstDebugCategory *GST_CAT_MESSAGE = NULL; GstDebugCategory *GST_CAT_PARAMS = NULL; GstDebugCategory *GST_CAT_CALL_TRACE = NULL; GstDebugCategory *GST_CAT_SIGNAL = NULL; GstDebugCategory *GST_CAT_PROBE = NULL; GstDebugCategory *GST_CAT_REGISTRY = NULL; GstDebugCategory *GST_CAT_QOS = NULL; /* FIXME: export this? */ gboolean __gst_in_valgrind (void) { static enum { GST_VG_UNCHECKED, GST_VG_NO_VALGRIND, GST_VG_INSIDE } in_valgrind = GST_VG_UNCHECKED; if (in_valgrind == GST_VG_UNCHECKED) { #ifdef HAVE_VALGRIND if (RUNNING_ON_VALGRIND) { GST_CAT_INFO (GST_CAT_GST_INIT, "we're running inside valgrind"); printf ("GStreamer has detected that it is running inside valgrind.\n"); printf ("It might now take different code paths to ease debugging.\n"); printf ("Of course, this may also lead to different bugs.\n"); in_valgrind = GST_VG_INSIDE; } else { GST_CAT_LOG (GST_CAT_GST_INIT, "not doing extra valgrind stuff"); in_valgrind = GST_VG_NO_VALGRIND; } #else in_valgrind = GST_VG_NO_VALGRIND; #endif g_assert (in_valgrind == GST_VG_NO_VALGRIND || in_valgrind == GST_VG_INSIDE); } return (in_valgrind == GST_VG_INSIDE) ? TRUE : FALSE; } /** * _gst_debug_init: * * Initializes the debugging system. * Normally you don't want to call this, because gst_init() does it for you. */ void _gst_debug_init (void) { GTimeVal current; gst_atomic_int_set (&__default_level, GST_LEVEL_DEFAULT); gst_atomic_int_set (&__use_color, 1); /* get time we started for debugging messages */ g_get_current_time (¤t); start_time = GST_TIMEVAL_TO_TIME (current); #ifdef HAVE_PRINTF_EXTENSION register_printf_function (GST_PTR_FORMAT[0], _gst_info_printf_extension, _gst_info_printf_extension_arginfo); #endif /* do NOT use a single debug function before this line has been run */ GST_CAT_DEFAULT = _gst_debug_category_new ("default", GST_DEBUG_UNDERLINE, NULL); _GST_CAT_DEBUG = _gst_debug_category_new ("GST_DEBUG", GST_DEBUG_BOLD | GST_DEBUG_FG_YELLOW, "debugging subsystem"); gst_debug_add_log_function (gst_debug_log_default, NULL); /* FIXME: add descriptions here */ GST_CAT_GST_INIT = _gst_debug_category_new ("GST_INIT", GST_DEBUG_BOLD | GST_DEBUG_FG_RED, NULL); GST_CAT_AUTOPLUG = _gst_debug_category_new ("GST_AUTOPLUG", GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL); GST_CAT_AUTOPLUG_ATTEMPT = _gst_debug_category_new ("GST_AUTOPLUG_ATTEMPT", GST_DEBUG_BOLD | GST_DEBUG_FG_CYAN | GST_DEBUG_BG_BLUE, NULL); GST_CAT_PARENTAGE = _gst_debug_category_new ("GST_PARENTAGE", GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL); GST_CAT_STATES = _gst_debug_category_new ("GST_STATES", GST_DEBUG_BOLD | GST_DEBUG_FG_RED, NULL); GST_CAT_SCHEDULING = _gst_debug_category_new ("GST_SCHEDULING", GST_DEBUG_BOLD | GST_DEBUG_FG_MAGENTA, NULL); GST_CAT_BUFFER = _gst_debug_category_new ("GST_BUFFER", GST_DEBUG_BOLD | GST_DEBUG_BG_GREEN, NULL); GST_CAT_BUS = _gst_debug_category_new ("GST_BUS", GST_DEBUG_BG_YELLOW, NULL); GST_CAT_CAPS = _gst_debug_category_new ("GST_CAPS", GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL); GST_CAT_CLOCK = _gst_debug_category_new ("GST_CLOCK", GST_DEBUG_BOLD | GST_DEBUG_FG_YELLOW, NULL); GST_CAT_ELEMENT_PADS = _gst_debug_category_new ("GST_ELEMENT_PADS", GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL); GST_CAT_PADS = _gst_debug_category_new ("GST_PADS", GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL); GST_CAT_PIPELINE = _gst_debug_category_new ("GST_PIPELINE", GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL); GST_CAT_PLUGIN_LOADING = _gst_debug_category_new ("GST_PLUGIN_LOADING", GST_DEBUG_BOLD | GST_DEBUG_FG_CYAN, NULL); GST_CAT_PLUGIN_INFO = _gst_debug_category_new ("GST_PLUGIN_INFO", GST_DEBUG_BOLD | GST_DEBUG_FG_CYAN, NULL); GST_CAT_PROPERTIES = _gst_debug_category_new ("GST_PROPERTIES", GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_BLUE, NULL); GST_CAT_TYPES = _gst_debug_category_new ("GST_TYPES", GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL); GST_CAT_XML = _gst_debug_category_new ("GST_XML", GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL); GST_CAT_NEGOTIATION = _gst_debug_category_new ("GST_NEGOTIATION", GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL); GST_CAT_REFCOUNTING = _gst_debug_category_new ("GST_REFCOUNTING", GST_DEBUG_BOLD | GST_DEBUG_FG_RED | GST_DEBUG_BG_BLUE, NULL); GST_CAT_ERROR_SYSTEM = _gst_debug_category_new ("GST_ERROR_SYSTEM", GST_DEBUG_BOLD | GST_DEBUG_FG_RED | GST_DEBUG_BG_WHITE, NULL); GST_CAT_EVENT = _gst_debug_category_new ("GST_EVENT", GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL); GST_CAT_MESSAGE = _gst_debug_category_new ("GST_MESSAGE", GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL); GST_CAT_PARAMS = _gst_debug_category_new ("GST_PARAMS", GST_DEBUG_BOLD | GST_DEBUG_FG_BLACK | GST_DEBUG_BG_YELLOW, NULL); GST_CAT_CALL_TRACE = _gst_debug_category_new ("GST_CALL_TRACE", GST_DEBUG_BOLD, NULL); GST_CAT_SIGNAL = _gst_debug_category_new ("GST_SIGNAL", GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL); GST_CAT_PROBE = _gst_debug_category_new ("GST_PROBE", GST_DEBUG_BOLD | GST_DEBUG_FG_GREEN, "pad probes"); GST_CAT_REGISTRY = _gst_debug_category_new ("GST_REGISTRY", 0, "registry"); GST_CAT_QOS = _gst_debug_category_new ("GST_QOS", 0, "QoS"); /* print out the valgrind message if we're in valgrind */ __gst_in_valgrind (); } /* we can't do this further above, because we initialize the GST_CAT_DEFAULT struct */ #define GST_CAT_DEFAULT _GST_CAT_DEBUG /** * gst_debug_log: * @category: category to log * @level: level of the message is in * @file: the file that emitted the message, usually the __FILE__ identifier * @function: the function that emitted the message * @line: the line from that the message was emitted, usually __LINE__ * @object: the object this message relates to or NULL if none * @format: a printf style format string * @...: optional arguments for the format * * Logs the given message using the currently registered debugging handlers. */ void gst_debug_log (GstDebugCategory * category, GstDebugLevel level, const gchar * file, const gchar * function, gint line, GObject * object, const gchar * format, ...) { va_list var_args; va_start (var_args, format); gst_debug_log_valist (category, level, file, function, line, object, format, var_args); va_end (var_args); } /** * gst_debug_log_valist: * @category: category to log * @level: level of the message is in * @file: the file that emitted the message, usually the __FILE__ identifier * @function: the function that emitted the message * @line: the line from that the message was emitted, usually __LINE__ * @object: the object this message relates to or NULL if none * @format: a printf style format string * @args: optional arguments for the format * * Logs the given message using the currently registered debugging handlers. */ void gst_debug_log_valist (GstDebugCategory * category, GstDebugLevel level, const gchar * file, const gchar * function, gint line, GObject * object, const gchar * format, va_list args) { GstDebugMessage message; LogFuncEntry *entry; GSList *handler; g_return_if_fail (category != NULL); g_return_if_fail (file != NULL); g_return_if_fail (function != NULL); g_return_if_fail (format != NULL); message.message = NULL; message.format = format; G_VA_COPY (message.arguments, args); handler = __log_functions; while (handler) { entry = handler->data; handler = g_slist_next (handler); entry->func (category, level, file, function, line, object, &message, entry->user_data); } g_free (message.message); va_end (message.arguments); } /** * gst_debug_message_get: * @message: a debug message * * Gets the string representation of a #GstDebugMessage. This function is used * in debug handlers to extract the message. * * Returns: the string representation of a #GstDebugMessage. */ const gchar * gst_debug_message_get (GstDebugMessage * message) { if (message->message == NULL) { message->message = g_strdup_vprintf (message->format, message->arguments); } return message->message; } static gchar * gst_debug_print_object (gpointer ptr) { GObject *object = (GObject *) ptr; #ifdef unused /* This is a cute trick to detect unmapped memory, but is unportable, * slow, screws around with madvise, and not actually that useful. */ { int ret; ret = madvise ((void *) ((unsigned long) ptr & (~0xfff)), 4096, 0); if (ret == -1 && errno == ENOMEM) { buffer = g_strdup_printf ("%p (unmapped memory)", ptr); } } #endif /* nicely printed object */ if (object == NULL) { return g_strdup ("(NULL)"); } if (*(GType *) ptr == GST_TYPE_CAPS) { return gst_caps_to_string ((GstCaps *) ptr); } if (*(GType *) ptr == GST_TYPE_STRUCTURE) { return gst_structure_to_string ((GstStructure *) ptr); } #ifdef USE_POISONING if (*(guint32 *) ptr == 0xffffffff) { return g_strdup_printf ("", ptr); } #endif if (GST_IS_PAD (object) && GST_OBJECT_NAME (object)) { return g_strdup_printf ("<%s:%s>", GST_DEBUG_PAD_NAME (object)); } if (GST_IS_OBJECT (object) && GST_OBJECT_NAME (object)) { return g_strdup_printf ("<%s>", GST_OBJECT_NAME (object)); } if (G_IS_OBJECT (object)) { return g_strdup_printf ("<%s@%p>", G_OBJECT_TYPE_NAME (object), object); } return g_strdup_printf ("%p", ptr); } /** * gst_debug_construct_term_color: * @colorinfo: the color info * * Constructs a string that can be used for getting the desired color in color * terminals. * You need to free the string after use. * * Returns: a string containing the color definition */ gchar * gst_debug_construct_term_color (guint colorinfo) { GString *color; gchar *ret; color = g_string_new ("\033[00"); if (colorinfo & GST_DEBUG_BOLD) { g_string_append (color, ";01"); } if (colorinfo & GST_DEBUG_UNDERLINE) { g_string_append (color, ";04"); } if (colorinfo & GST_DEBUG_FG_MASK) { g_string_append_printf (color, ";3%1d", colorinfo & GST_DEBUG_FG_MASK); } if (colorinfo & GST_DEBUG_BG_MASK) { g_string_append_printf (color, ";4%1d", (colorinfo & GST_DEBUG_BG_MASK) >> 4); } g_string_append (color, "m"); ret = color->str; g_string_free (color, FALSE); return ret; } /** * gst_debug_log_default: * @category: category to log * @level: level of the message * @file: the file that emitted the message, usually the __FILE__ identifier * @function: the function that emitted the message * @line: the line from that the message was emitted, usually __LINE__ * @message: the actual message * @object: the object this message relates to or NULL if none * @unused: an unused variable, reserved for some user_data. * * The default logging handler used by GStreamer. Logging functions get called * whenever a macro like GST_DEBUG or similar is used. This function outputs the * message and additional info using the glib error handler. * You can add other handlers by using gst_debug_add_log_function(). * And you can remove this handler by calling * gst_debug_remove_log_function(gst_debug_log_default); */ void gst_debug_log_default (GstDebugCategory * category, GstDebugLevel level, const gchar * file, const gchar * function, gint line, GObject * object, GstDebugMessage * message, gpointer unused) { gchar *color = NULL; gchar *clear; gchar *obj = NULL; gchar pidcolor[10]; gint pid; GTimeVal now; GstClockTime elapsed; gboolean free_color = TRUE; gboolean free_obj = TRUE; if (level > gst_debug_category_get_threshold (category)) return; pid = getpid (); /* color info */ if (gst_debug_is_colored ()) { color = gst_debug_construct_term_color (gst_debug_category_get_color (category)); clear = "\033[00m"; g_sprintf (pidcolor, "\033[3%1dm", pid % 6 + 31); } else { color = "\0"; free_color = FALSE; clear = ""; pidcolor[0] = '\0'; } if (object) { obj = gst_debug_print_object (object); } else { obj = "\0"; free_obj = FALSE; } g_get_current_time (&now); elapsed = GST_TIMEVAL_TO_TIME (now) - start_time; g_printerr ("%s (%p - %" GST_TIME_FORMAT ") %s%20s%s(%s%5d%s) %s%s(%d):%s:%s%s %s\n", gst_debug_level_get_name (level), g_thread_self (), GST_TIME_ARGS (elapsed), color, gst_debug_category_get_name (category), clear, pidcolor, pid, clear, color, file, line, function, obj, clear, gst_debug_message_get (message)); if (free_color) g_free (color); if (free_obj) g_free (obj); } /** * gst_debug_level_get_name: * @level: the level to get the name for * * Get the string trepresentation of a debugging level * * Returns: the name */ const gchar * gst_debug_level_get_name (GstDebugLevel level) { switch (level) { case GST_LEVEL_NONE: return ""; case GST_LEVEL_ERROR: return "ERROR"; case GST_LEVEL_WARNING: return "WARN "; case GST_LEVEL_INFO: return "INFO "; case GST_LEVEL_DEBUG: return "DEBUG"; case GST_LEVEL_LOG: return "LOG "; default: g_warning ("invalid level specified for gst_debug_level_get_name"); return ""; } } /** * gst_debug_add_log_function: * @func: the function to use * @data: user data * * Adds the logging function to the list of logging functions. * Be sure to use G_GNUC_NO_INSTRUMENT on that function, it is needed. */ void gst_debug_add_log_function (GstLogFunction func, gpointer data) { LogFuncEntry *entry; GSList *list; g_return_if_fail (func != NULL); entry = g_new (LogFuncEntry, 1); entry->func = func; entry->user_data = data; /* FIXME: we leak the old list here - other threads might access it right now * in gst_debug_logv. Another solution is to lock the mutex in gst_debug_logv, * but that is waaay costly. * It'd probably be clever to use some kind of RCU here, but I don't know * anything about that. */ g_static_mutex_lock (&__log_func_mutex); list = g_slist_copy (__log_functions); __log_functions = g_slist_prepend (list, entry); g_static_mutex_unlock (&__log_func_mutex); GST_DEBUG ("prepended log function %p (user data %p) to log functions", func, data); } static gint gst_debug_compare_log_function_by_func (gconstpointer entry, gconstpointer func) { gpointer entryfunc = ((LogFuncEntry *) entry)->func; return (entryfunc < func) ? -1 : (entryfunc > func) ? 1 : 0; } static gint gst_debug_compare_log_function_by_data (gconstpointer entry, gconstpointer data) { gpointer entrydata = ((LogFuncEntry *) entry)->user_data; return (entrydata < data) ? -1 : (entrydata > data) ? 1 : 0; } static guint gst_debug_remove_with_compare_func (GCompareFunc func, gpointer data) { GSList *found; GSList *new; guint removals = 0; g_static_mutex_lock (&__log_func_mutex); new = __log_functions; while ((found = g_slist_find_custom (new, data, func))) { if (new == __log_functions) { new = g_slist_copy (new); continue; } g_free (found->data); new = g_slist_delete_link (new, found); removals++; } /* FIXME: We leak the old list here. See _add_log_function for why. */ __log_functions = new; g_static_mutex_unlock (&__log_func_mutex); return removals; } /** * gst_debug_remove_log_function: * @func: the log function to remove * * Removes all registrered instances of the given logging functions. * * Returns: How many instances of the function were removed */ guint gst_debug_remove_log_function (GstLogFunction func) { guint removals; g_return_val_if_fail (func != NULL, 0); removals = gst_debug_remove_with_compare_func (gst_debug_compare_log_function_by_func, func); GST_DEBUG ("removed log function %p %d times from log function list", func, removals); return removals; } /** * gst_debug_remove_log_function_by_data: * @data: user data of the log function to remove * * Removes all registrered instances of log functions with the given user data. * * Returns: How many instances of the function were removed */ guint gst_debug_remove_log_function_by_data (gpointer data) { guint removals; removals = gst_debug_remove_with_compare_func (gst_debug_compare_log_function_by_data, data); GST_DEBUG ("removed %d log functions with user data %p from log function list", removals, data); return removals; } /** * gst_debug_set_colored: * @colored: Whether to use colored output or not * * Sets or unsets the use of coloured debugging output. */ void gst_debug_set_colored (gboolean colored) { gst_atomic_int_set (&__use_color, colored ? 1 : 0); } /** * gst_debug_is_colored: * * Checks if the debugging output should be colored. * * Returns: TRUE, if the debug output should be colored. */ gboolean gst_debug_is_colored (void) { return g_atomic_int_get (&__use_color) == 0 ? FALSE : TRUE; } /** * gst_debug_set_active: * @active: Whether to use debugging output or not * * If activated, debugging messages are sent to the debugging * handlers. * It makes sense to deactivate it for speed issues. * This function is not threadsafe. It makes sense to only call it * during initialization. */ void gst_debug_set_active (gboolean active) { __gst_debug_enabled = active; if (active) __gst_debug_min = GST_LEVEL_COUNT; else __gst_debug_min = GST_LEVEL_NONE; } /** * gst_debug_is_active: * * Checks if debugging output is activated. * * Returns: TRUE, if debugging is activated */ gboolean gst_debug_is_active (void) { return __gst_debug_enabled; } /** * gst_debug_set_default_threshold: * @level: level to set * * Sets the default threshold to the given level and updates all categories to * use this threshold. */ void gst_debug_set_default_threshold (GstDebugLevel level) { gst_atomic_int_set (&__default_level, level); gst_debug_reset_all_thresholds (); } /** * gst_debug_get_default_threshold: * * Returns the default threshold that is used for new categories. * * Returns: the default threshold level */ GstDebugLevel gst_debug_get_default_threshold (void) { return (GstDebugLevel) g_atomic_int_get (&__default_level); } static void gst_debug_reset_threshold (gpointer category, gpointer unused) { GstDebugCategory *cat = (GstDebugCategory *) category; GSList *walk; g_static_mutex_lock (&__level_name_mutex); walk = __level_name; while (walk) { LevelNameEntry *entry = walk->data; walk = g_slist_next (walk); if (g_pattern_match_string (entry->pat, cat->name)) { GST_LOG ("category %s matches pattern %p - gets set to level %d", cat->name, entry->pat, entry->level); gst_debug_category_set_threshold (cat, entry->level); goto exit; } } gst_debug_category_set_threshold (cat, gst_debug_get_default_threshold ()); exit: g_static_mutex_unlock (&__level_name_mutex); } static void gst_debug_reset_all_thresholds (void) { g_static_mutex_lock (&__cat_mutex); g_slist_foreach (__categories, gst_debug_reset_threshold, NULL); g_static_mutex_unlock (&__cat_mutex); } static void for_each_threshold_by_entry (gpointer data, gpointer user_data) { GstDebugCategory *cat = (GstDebugCategory *) data; LevelNameEntry *entry = (LevelNameEntry *) user_data; if (g_pattern_match_string (entry->pat, cat->name)) { GST_LOG ("category %s matches pattern %p - gets set to level %d", cat->name, entry->pat, entry->level); gst_debug_category_set_threshold (cat, entry->level); } } /** * gst_debug_set_threshold_for_name: * @name: name of the categories to set * @level: level to set them to * * Sets all categories which match the given glob style pattern to the given * level. */ void gst_debug_set_threshold_for_name (const gchar * name, GstDebugLevel level) { GPatternSpec *pat; LevelNameEntry *entry; g_return_if_fail (name != NULL); pat = g_pattern_spec_new (name); entry = g_new (LevelNameEntry, 1); entry->pat = pat; entry->level = level; g_static_mutex_lock (&__level_name_mutex); __level_name = g_slist_prepend (__level_name, entry); g_static_mutex_unlock (&__level_name_mutex); g_static_mutex_lock (&__cat_mutex); g_slist_foreach (__categories, for_each_threshold_by_entry, entry); g_static_mutex_unlock (&__cat_mutex); } /** * gst_debug_unset_threshold_for_name: * @name: name of the categories to set * * Resets all categories with the given name back to the default level. */ void gst_debug_unset_threshold_for_name (const gchar * name) { GSList *walk; GPatternSpec *pat; g_return_if_fail (name != NULL); pat = g_pattern_spec_new (name); g_static_mutex_lock (&__level_name_mutex); walk = __level_name; /* improve this if you want, it's mighty slow */ while (walk) { LevelNameEntry *entry = walk->data; if (g_pattern_spec_equal (entry->pat, pat)) { __level_name = g_slist_remove_link (__level_name, walk); g_pattern_spec_free (entry->pat); g_free (entry); g_slist_free_1 (walk); walk = __level_name; } } g_static_mutex_unlock (&__level_name_mutex); g_pattern_spec_free (pat); gst_debug_reset_all_thresholds (); } GstDebugCategory * _gst_debug_category_new (gchar * name, guint color, gchar * description) { GstDebugCategory *cat; g_return_val_if_fail (name != NULL, NULL); cat = g_new (GstDebugCategory, 1); cat->name = g_strdup (name); cat->color = color; if (description != NULL) { cat->description = g_strdup (description); } else { cat->description = g_strdup ("no description"); } gst_atomic_int_set (&cat->threshold, 0); gst_debug_reset_threshold (cat, NULL); /* add to category list */ g_static_mutex_lock (&__cat_mutex); __categories = g_slist_prepend (__categories, cat); g_static_mutex_unlock (&__cat_mutex); return cat; } /** * gst_debug_category_free: * @category: #GstDebugCategory to free. * * Removes and frees the category and all associated resources. */ void gst_debug_category_free (GstDebugCategory * category) { if (category == NULL) return; /* remove from category list */ g_static_mutex_lock (&__cat_mutex); __categories = g_slist_remove (__categories, category); g_static_mutex_unlock (&__cat_mutex); g_free ((gpointer) category->name); g_free ((gpointer) category->description); g_free (category); } /** * gst_debug_category_set_threshold: * @category: a #GstDebugCategory to set threshold of. * @level: the #GstDebugLevel threshold to set. * * Sets the threshold of the category to the given level. Debug information will * only be output if the threshold is lower or equal to the level of the * debugging message. * * Do not use this function in production code, because other functions may * change the threshold of categories as side effect. It is however a nice * function to use when debugging (even from gdb). * */ void gst_debug_category_set_threshold (GstDebugCategory * category, GstDebugLevel level) { g_return_if_fail (category != NULL); if (level > __gst_debug_min) { __gst_debug_enabled = TRUE; __gst_debug_min = level; } gst_atomic_int_set (&category->threshold, level); } /** * gst_debug_category_reset_threshold: * @category: a #GstDebugCategory to reset threshold of. * * Resets the threshold of the category to the default level. Debug information * will only be output if the threshold is lower or equal to the level of the * debugging message. * Use this function to set the threshold back to where it was after using * gst_debug_category_set_threshold(). */ void gst_debug_category_reset_threshold (GstDebugCategory * category) { gst_debug_reset_threshold (category, NULL); } /** * gst_debug_category_get_threshold: * @category: a #GstDebugCategory to get threshold of. * * Returns the threshold of a #GstCategory. * * Returns: the #GstDebugLevel that is used as threshold. */ GstDebugLevel gst_debug_category_get_threshold (GstDebugCategory * category) { return g_atomic_int_get (&category->threshold); } /** * gst_debug_category_get_name: * @category: a #GstDebugCategory to get name of. * * Returns the name of a debug category. * * Returns: the name of the category. */ const gchar * gst_debug_category_get_name (GstDebugCategory * category) { return category->name; } /** * gst_debug_category_get_color: * @category: a #GstDebugCategory to get the color of. * * Returns the color of a debug category used when printing output in this * category. * * Returns: the color of the category. */ guint gst_debug_category_get_color (GstDebugCategory * category) { return category->color; } /** * gst_debug_category_get_description: * @category: a #GstDebugCategory to get the description of. * * Returns the description of a debug category. * * Returns: the description of the category. */ const gchar * gst_debug_category_get_description (GstDebugCategory * category) { return category->description; } /** * gst_debug_get_all_categories: * * Returns a snapshot of a all categories that are currently in use . This list * may change anytime. * The caller has to free the list after use. * * Returns: the list of categories */ GSList * gst_debug_get_all_categories (void) { GSList *ret; g_static_mutex_lock (&__cat_mutex); ret = g_slist_copy (__categories); g_static_mutex_unlock (&__cat_mutex); return ret; } /*** FUNCTION POINTERS ********************************************************/ static GHashTable *__gst_function_pointers; /* NULL */ static GStaticMutex __dbg_functions_mutex = G_STATIC_MUTEX_INIT; const gchar * _gst_debug_nameof_funcptr (GstDebugFuncPtr ptr) G_GNUC_NO_INSTRUMENT; /* This function MUST NOT return NULL */ const gchar *_gst_debug_nameof_funcptr (GstDebugFuncPtr func) { gpointer ptr = (gpointer) func; gchar *ptrname; #ifdef HAVE_DLADDR Dl_info dlinfo; #endif if (G_LIKELY (__gst_function_pointers)) { g_static_mutex_lock (&__dbg_functions_mutex); ptrname = g_hash_table_lookup (__gst_function_pointers, ptr); g_static_mutex_unlock (&__dbg_functions_mutex); if (G_LIKELY (ptrname)) return ptrname; } /* we need to create an entry in the hash table for this one so we don't leak * the name */ #ifdef HAVE_DLADDR if (dladdr (ptr, &dlinfo) && dlinfo.dli_sname) { gchar *name = g_strdup (dlinfo.dli_sname); _gst_debug_register_funcptr (ptr, name); return name; } else #endif { gchar *name = g_strdup_printf ("%p", ptr); _gst_debug_register_funcptr (ptr, name); return name; } } void _gst_debug_register_funcptr (GstDebugFuncPtr func, gchar * ptrname) { gpointer ptr = (gpointer) func; g_static_mutex_lock (&__dbg_functions_mutex); if (!__gst_function_pointers) __gst_function_pointers = g_hash_table_new (g_direct_hash, g_direct_equal); if (!g_hash_table_lookup (__gst_function_pointers, ptr)) g_hash_table_insert (__gst_function_pointers, ptr, ptrname); g_static_mutex_unlock (&__dbg_functions_mutex); } #ifdef HAVE_PRINTF_EXTENSION static int _gst_info_printf_extension (FILE * stream, const struct printf_info *info, const void *const *args) { char *buffer; int len; void *ptr; buffer = NULL; ptr = *(void **) args[0]; buffer = gst_debug_print_object (ptr); len = fprintf (stream, "%*s", (info->left ? -info->width : info->width), buffer); free (buffer); return len; } static int _gst_info_printf_extension_arginfo (const struct printf_info *info, size_t n, int *argtypes) { if (n > 0) argtypes[0] = PA_POINTER; return 1; } #endif /* HAVE_PRINTF_EXTENSION */ #else /* !GST_DISABLE_GST_DEBUG */ guint gst_debug_remove_log_function (GstLogFunction func) { return 0; } guint gst_debug_remove_log_function_by_data (gpointer data) { return 0; } gboolean __gst_in_valgrind (void) { return FALSE; } #endif /* GST_DISABLE_GST_DEBUG */ #ifdef GST_ENABLE_FUNC_INSTRUMENTATION /* FIXME make this thread specific */ static GSList *stack_trace = NULL; void __cyg_profile_func_enter (void *this_fn, void *call_site) G_GNUC_NO_INSTRUMENT; void __cyg_profile_func_enter (void *this_fn, void *call_site) { gchar *name = _gst_debug_nameof_funcptr (this_fn); gchar *site = _gst_debug_nameof_funcptr (call_site); GST_CAT_DEBUG (GST_CAT_CALL_TRACE, "entering function %s from %s", name, site); stack_trace = g_slist_prepend (stack_trace, g_strdup_printf ("%8p in %s from %p (%s)", this_fn, name, call_site, site)); g_free (name); g_free (site); } void __cyg_profile_func_exit (void *this_fn, void *call_site) G_GNUC_NO_INSTRUMENT; void __cyg_profile_func_exit (void *this_fn, void *call_site) { gchar *name = _gst_debug_nameof_funcptr (this_fn); GST_CAT_DEBUG (GST_CAT_CALL_TRACE, "leaving function %s", name); g_free (stack_trace->data); stack_trace = g_slist_delete_link (stack_trace, stack_trace); g_free (name); } /** * gst_debug_print_stack_trace: * * If GST_ENABLE_FUNC_INSTRUMENTATION is defined a stacktracke is available for * gstreamer code, which can be printed with this function. */ void gst_debug_print_stack_trace (void) { GSList *walk = stack_trace; gint count = 0; if (walk) walk = g_slist_next (walk); while (walk) { gchar *name = (gchar *) walk->data; g_print ("#%-2d %s\n", count++, name); walk = g_slist_next (walk); } } #else void gst_debug_print_stack_trace (void) { /* nothing because it's compiled out */ } #endif /* GST_ENABLE_FUNC_INTSTRUMENTATION */