Work-around non-thread-safe use of the C random number generator

[vlc] / bin / vlc.c

diff --git a/bin/vlc.c b/bin/vlc.c
index 657b1be84b207df72aab55b7bd3e984010d63e44..9e769b018cb80fc42eeac674d146dcbc78271658 100644 (file)
--- a/bin/vlc.c
+++ b/bin/vlc.c
@@ -42,21 +42,38 @@
 /* Explicit HACK */
 extern void LocaleFree (const char *);
 extern char *FromLocale (const char *);
+extern void vlc_enable_override (void);
 
 #include <signal.h>
 #include <time.h>
 #include <pthread.h>
 #include <unistd.h>
+#include <dlfcn.h>
 
 /*****************************************************************************
  * main: parse command line, start interface and spawn threads.
  *****************************************************************************/
 int main( int i_argc, const char *ppsz_argv[] )
 {
-#ifdef __APPLE__
-    /* The so-called POSIX-compliant MacOS X is not. 
-     * SIGPIPE fires even when it is blocked in all threads! */
+    /* The so-called POSIX-compliant MacOS X reportedly processes SIGPIPE even
+     * if it is blocked in all thread. Also some libraries want SIGPIPE blocked
+     * as they have no clue about signal masks.
+     * Note: this is NOT an excuse for not protecting against SIGPIPE. If
+     * LibVLC runs outside of VLC, we cannot rely on this code snippet. */
     signal (SIGPIPE, SIG_IGN);
+
+#ifdef HAVE_PUTENV
+# ifndef NDEBUG
+    /* Activate malloc checking routines to detect heap corruptions. */
+    putenv( (char*)"MALLOC_CHECK_=2" );
+
+    /* Disable the ugly Gnome crash dialog so that we properly segfault */
+    putenv( (char *)"GNOME_DISABLE_CRASH_DIALOG=1" );
+# endif
+
+    /* Make Xlib hide visuals with an alphachannel. Ensure that Qt4 will not
+     * use the alpha channel for the embedded video window. */
+    putenv( (char *)"XLIB_SKIP_ARGB_VISUALS=1" );
 #endif
 
 #ifndef ALLOW_RUN_AS_ROOT
@@ -74,17 +91,8 @@ int main( int i_argc, const char *ppsz_argv[] )
 
 #ifndef __APPLE__
     /* This clutters OSX GUI error logs */
-    fprintf( stderr, "VLC media player %s\n", libvlc_get_version() );
-#endif
-
-#ifdef HAVE_PUTENV
-#   ifndef NDEBUG
-    /* Activate malloc checking routines to detect heap corruptions. */
-    putenv( (char*)"MALLOC_CHECK_=2" );
-
-    /* Disable the ugly Gnome crash dialog so that we properly segfault */
-    putenv( (char *)"GNOME_DISABLE_CRASH_DIALOG=1" );
-#   endif
+    fprintf( stderr, "VLC media player %s (revision %s)\n",
+             libvlc_get_version(), libvlc_get_changeset() );
 #endif
 
     /* Synchronously intercepted POSIX signals.
@@ -150,6 +158,8 @@ int main( int i_argc, const char *ppsz_argv[] )
             return 1; // BOOM!
     argv[argc] = NULL;
 
+    vlc_enable_override ();
+
     /* Initialize libvlc */
     libvlc_instance_t *vlc = libvlc_new (argc, argv);
 
@@ -171,5 +181,14 @@ int main( int i_argc, const char *ppsz_argv[] )
     for (int i = 1; i < argc; i++)
         LocaleFree (argv[i]);
 
+#ifdef RTLD_NOLOAD
+    /* Avoid crash in KIO scheduler cleanup. */
+    /* This is ugly, but we get way too many crash reports due to this. */
+    if (dlopen ("libkfilemodule.so", RTLD_LAZY|RTLD_LOCAL|RTLD_NOLOAD) != NULL)
+    {
+        fprintf (stderr, "KFile plugin present. Unclean shutdown!\n");
+        _exit (0);
+    }
+#endif
     return 0;
 }