[Mplayerxp-cvslog] SF.net SVN: mplayerxp:[398] mplayerxp

[<nic...@us...>]

Revision: 398
          http://mplayerxp.svn.sourceforge.net/mplayerxp/?rev=398&view=rev
Author:   nickols_k
Date:     2012-11-17 14:55:17 +0000 (Sat, 17 Nov 2012)
Log Message:
-----------
add test for backtrace efficiency

Modified Paths:
--------------
    mplayerxp/mplayerxp.cpp
    mplayerxp/osdep/mplib.h

Modified: mplayerxp/mplayerxp.cpp
===================================================================
--- mplayerxp/mplayerxp.cpp	2012-11-17 14:33:48 UTC (rev 397)
+++ mplayerxp/mplayerxp.cpp	2012-11-17 14:55:17 UTC (rev 398)
@@ -207,6 +207,12 @@
     return MPXP_Virus;
 }
 
+static volatile void __attribute__ ((noinline)) mpxp_test_backtrace(void) {
+    any_t* caller = get_caller_address();
+    goto *caller;
+    kill(getpid(), SIGILL);
+}
+
 unsigned xp_num_cpu;
 static unsigned get_number_cpu(void) {
 #ifdef _OPENMP
@@ -1679,6 +1685,7 @@
 \******************************************/
 int MPlayerXP(int argc,char* argv[], char *envp[]){
     mpxp_init_antiviral_protection(1);
+    mpxp_test_backtrace();
     int i;
     stream_t* stream=NULL;
     int stream_dump_type=0;

Modified: mplayerxp/osdep/mplib.h
===================================================================
--- mplayerxp/osdep/mplib.h	2012-11-17 14:33:48 UTC (rev 397)
+++ mplayerxp/osdep/mplib.h	2012-11-17 14:55:17 UTC (rev 398)
@@ -75,6 +75,12 @@
     print_backtrace(why,stack,ncalls);
 }
 
+static inline any_t* get_caller_address(void) {
+    any_t*	stack[2];
+    unsigned	ncalls;
+    ncalls=backtrace(stack,2);
+    return stack[1];
+}
 extern any_t*	__FASTCALL__ SECURE_NAME0(_mp_malloc)(size_t size);
 extern any_t*	__FASTCALL__ SECURE_NAME1(_mp_mallocz)(size_t size);
 extern void	__FASTCALL__ SECURE_NAME2(_mp_free)(any_t* ptr);

This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.