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Code Issues Releases Activity

Fix infinite loop with clock() returning (clock_t)-1.

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Originally committed as revision 24116 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2010-07-08 18:13:31 +00:00
parent 65e3f89ffd
commit 6a522c49c2
1 changed files with 6 additions and 6 deletions
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12
libavutil/random_seed.c
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@ -40,17 +40,17 @@ static int read_random(uint32_t *dst, const char *file)
static uint32_t get_generic_seed(void) static uint32_t get_generic_seed(void)
{ {
int last_t=0; clock_t last_t=0;
int bits=0; int bits=0;
uint64_t random=0; uint64_t random=0;
unsigned i; unsigned i;
int s=0; float s=0.000000000001;
for(i=0;bits<64;i++){ for(i=0;bits<64;i++){
int t= clock()>>s; clock_t t= clock();
if(last_t && t != last_t){ if(last_t && fabs(t-last_t)>s || t==(clock_t)-1){
if(i<10000 && s<24){ if(i<10000 && s<(1<<24)){
s++; s+=s;
i=t=0; i=t=0;
}else{ }else{
random= 2*random + (i&1); random= 2*random + (i&1);