fix compilation on older mac systems without CLOCK_MONOTONIC
@@ -115,8 +115,10 @@ mi_stats_t _mi_stats_main = { MI_STATS_NULL };
Initialization of random numbers
----------------------------------------------------------- */
-#ifdef _WIN32
+#if defined(_WIN32)
#include <windows.h>
+#elif defined(__APPLE__)
+#include <mach/mach_time.h>
#else
#include <time.h>
#endif
@@ -145,10 +147,12 @@ uintptr_t _mi_random_init(uintptr_t seed /* can be zero */) {
uintptr_t x = (uintptr_t)((void*)&_mi_random_init);
x ^= seed;
// xor with high res time
-#ifdef _WIN32
+#if defined(_WIN32)
LARGE_INTEGER pcount;
QueryPerformanceCounter(&pcount);
x ^= (uintptr_t)(pcount.QuadPart);
+#elif defined(__APPLE__)
+ x ^= (uintptr_t)mach_absolute_time();
#else
struct timespec time;
clock_gettime(CLOCK_MONOTONIC, &time);
@@ -156,7 +160,7 @@ uintptr_t _mi_random_init(uintptr_t seed /* can be zero */) {
x ^= (uintptr_t)time.tv_nsec;
#endif
// and do a few randomization steps
- uintptr_t max = ((x ^ (x >> 7)) & 0x0F) + 1;
+ uintptr_t max = ((x ^ (x >> 17)) & 0x0F) + 1;
for (uintptr_t i = 0; i < max; i++) {
x = _mi_random_shuffle(x);
}
