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Allocate executable memory with VirtualAlloc() in Windows. 

Originally committed as revision 29006 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Ramiro Polla 2009-03-19 21:52:44 +00:00
parent 7c5bfe7add
commit dd35beb29b
1 changed files with 10 additions and 0 deletions
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10
libswscale/swscale.c
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@ -68,6 +68,10 @@ untested special converters
#define MAP_ANONYMOUS MAP_ANON
#endif
#endif
#if HAVE_VIRTUALALLOC
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#endif
#include "swscale.h"
#include "swscale_internal.h"
#include "rgb2rgb.h"
@ -2566,6 +2570,9 @@ SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int d
#ifdef MAP_ANONYMOUS
c->funnyYCode = mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
c->funnyUVCode = mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
#elif HAVE_VIRTUALALLOC
c->funnyYCode = VirtualAlloc(NULL, MAX_FUNNY_CODE_SIZE, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
c->funnyUVCode = VirtualAlloc(NULL, MAX_FUNNY_CODE_SIZE, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
#else
c->funnyYCode = av_malloc(MAX_FUNNY_CODE_SIZE);
c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);
@ -3214,6 +3221,9 @@ void sws_freeContext(SwsContext *c){
#ifdef MAP_ANONYMOUS
if (c->funnyYCode ) munmap(c->funnyYCode , MAX_FUNNY_CODE_SIZE);
if (c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);
#elif HAVE_VIRTUALALLOC
if (c->funnyYCode ) VirtualFree(c->funnyYCode , MAX_FUNNY_CODE_SIZE, MEM_RELEASE);
if (c->funnyUVCode) VirtualFree(c->funnyUVCode, MAX_FUNNY_CODE_SIZE, MEM_RELEASE);
#else
av_free(c->funnyYCode );
av_free(c->funnyUVCode);