21 #ifndef AVUTIL_X86_TIMER_H 22 #define AVUTIL_X86_TIMER_H 28 #define AV_READ_TIME read_time 34 #if ARCH_X86_64 || defined(__SSE2__) 38 :
"=a" (
a),
"=d" (d));
39 return ((uint64_t)d << 32) + a;
45 #define AV_READ_TIME __rdtsc static uint64_t read_time(void)