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info: Take lock around all prinf on Windows

Browse source 
On Windows, concurrent colored gstreamr debug output and usual
stdout/stderr string will cause broken output on terminal.
Since it's OS specific behavior, that's hard to completely avoid it
but we can protect it at least among our printing interfaces side.
This commit is contained in:
Seungha Yang 2019-08-20 00:59:15 +09:00 committed by Tim-Philipp Müller
parent de0a7c4bc8
commit 32b7108d54
1 changed files with 55 additions and 7 deletions
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62
gst/gstinfo.c
View file

@ -161,6 +161,17 @@ static char *gst_info_printf_pointer_extension_func (const char *format,
#include <tlhelp32.h>
#endif /* HAVE_DBGHELP */
#ifdef G_OS_WIN32
/* We take a lock in order to
* 1) keep colors and content together for a single line
* 2) serialise gst_print*() and gst_printerr*() with each other and the debug
* log to keep the debug log colouring from interfering with those and
* to prevent broken output on the windows terminal.
* Maybe there is a better way but for now this will do the right
* thing. */
G_LOCK_DEFINE_STATIC (win_print_mutex);
#endif
extern gboolean gst_is_initialized (void);
/* we want these symbols exported even if debug is disabled, to maintain
@ -1178,11 +1189,7 @@ gst_debug_log_default (GstDebugCategory * category, GstDebugLevel level,
if (color_mode != GST_DEBUG_COLOR_MODE_OFF) {
#ifdef G_OS_WIN32
/* We take a lock to keep colors and content together.
* Maybe there is a better way but for now this will do the right
* thing. */
static GMutex win_print_mutex;
g_mutex_lock (&win_print_mutex);
G_LOCK (win_print_mutex);
if (color_mode == GST_DEBUG_COLOR_MODE_UNIX) {
#endif
/* colors, non-windows */
@ -1240,7 +1247,7 @@ gst_debug_log_default (GstDebugCategory * category, GstDebugLevel level,
fprintf (log_file, " %s\n", message_str);
fflush (log_file);
}
g_mutex_unlock (&win_print_mutex);
G_UNLOCK (win_print_mutex);
#endif
} else {
/* no color, all platforms */
@ -2539,7 +2546,15 @@ gst_print (const gchar * format, ...)
str = gst_info_strdup_vprintf (format, args);
va_end (args);
#ifdef G_OS_WIN32
G_LOCK (win_print_mutex);
#endif
g_print ("%s", str);
#ifdef G_OS_WIN32
G_UNLOCK (win_print_mutex);
#endif
g_free (str);
}
@ -2574,7 +2589,15 @@ gst_println (const gchar * format, ...)
str = gst_info_strdup_vprintf (format, args);
va_end (args);
#ifdef G_OS_WIN32
G_LOCK (win_print_mutex);
#endif
g_print ("%s\n", str);
#ifdef G_OS_WIN32
G_UNLOCK (win_print_mutex);
#endif
g_free (str);
}
@ -2609,7 +2632,15 @@ gst_printerr (const gchar * format, ...)
str = gst_info_strdup_vprintf (format, args);
va_end (args);
#ifdef G_OS_WIN32
G_LOCK (win_print_mutex);
#endif
g_printerr ("%s", str);
#ifdef G_OS_WIN32
G_UNLOCK (win_print_mutex);
#endif
g_free (str);
}
@ -2644,7 +2675,15 @@ gst_printerrln (const gchar * format, ...)
str = gst_info_strdup_vprintf (format, args);
va_end (args);
#ifdef G_OS_WIN32
G_LOCK (win_print_mutex);
#endif
g_printerr ("%s\n", str);
#ifdef G_OS_WIN32
G_UNLOCK (win_print_mutex);
#endif
g_free (str);
}
@ -2931,9 +2970,18 @@ gst_debug_print_stack_trace (void)
{
gchar *trace = gst_debug_get_stack_trace (GST_STACK_TRACE_SHOW_FULL);
if (trace)
if (trace) {
#ifdef G_OS_WIN32
G_LOCK (win_print_mutex);
#endif
g_print ("%s\n", trace);
#ifdef G_OS_WIN32
G_UNLOCK (win_print_mutex);
#endif
}
g_free (trace);
}