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info: make adding/removing of gst_debug_log_default() work properly

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Make adding/removing gst_debug_log_default() work reliably in all
circumstances. The problem was that depending on platform and linker
flags the function argument might resolve to different addresses,
which made it impossible to remove the default log function added
in gst_init() from application code (because the pointer values
didn't match). The new approach should keep things simple by passing
NULL for the default function, which the code in libgstreamer can
then handle.

https://bugzilla.gnome.org/show_bug.cgi?id=625396
https://bugzilla.gnome.org/show_bug.cgi?id=640771
This commit is contained in:
Tim-Philipp Müller 2011-02-03 10:53:27 +00:00
parent 74ff936752
commit 609a75eae2
2 changed files with 22 additions and 2 deletions
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9
gst/gstinfo.c
View file

@ -90,6 +90,9 @@
#include "gst_private.h"
#include "gstinfo.h"
#undef gst_debug_remove_log_function
#undef gst_debug_add_log_function
#ifndef GST_DISABLE_GST_DEBUG
#ifdef HAVE_DLFCN_H
@ -1064,7 +1067,8 @@ gst_debug_add_log_function (GstLogFunction func, gpointer data)
LogFuncEntry *entry;
GSList *list;
g_return_if_fail (func != NULL);
if (func == NULL)
func = gst_debug_log_default;
entry = g_slice_new (LogFuncEntry);
entry->func = func;
@ -1140,7 +1144,8 @@ gst_debug_remove_log_function (GstLogFunction func)
{
guint removals;
g_return_val_if_fail (func != NULL, 0);
if (func == NULL)
func = gst_debug_log_default;
removals =
gst_debug_remove_with_compare_func

15
gst/gstinfo.h
View file

@ -337,9 +337,24 @@ G_CONST_RETURN gchar *
void gst_debug_add_log_function (GstLogFunction func,
gpointer data);
guint gst_debug_remove_log_function (GstLogFunction func);
guint gst_debug_remove_log_function_by_data (gpointer data);
#define gst_debug_add_log_function(func,data) \
G_STMT_START{ \
if (func == gst_debug_log_default) { \
gst_debug_add_log_function(NULL,data); \
} else { \
gst_debug_add_log_function(func,data); \
} \
}G_STMT_END
#define gst_debug_remove_log_function(func) \
(func == gst_debug_log_default) ? \
gst_debug_remove_log_function(NULL) : \
gst_debug_remove_log_function(func)
void gst_debug_set_active (gboolean active);
gboolean gst_debug_is_active (void);