41 lines
939 B
C
41 lines
939 B
C
/* Copyright (c) 2018 David Kaloper Meršinjak. All rights reserved.
|
|
See LICENSE.md */
|
|
|
|
#include <caml/mlvalues.h>
|
|
|
|
#if defined (__x86_64__)
|
|
#define __x86__
|
|
|
|
#elif defined (__i686__)
|
|
#warning Unmark uses unboxed native ints for low-level counters. Proceed with extreme caution.
|
|
/* We can still do short benchmarks, tho. */
|
|
#define __x86__
|
|
|
|
#endif
|
|
|
|
#if defined (__x86__)
|
|
#include <x86intrin.h>
|
|
#endif
|
|
|
|
#include <time.h>
|
|
|
|
#define __unit value unit __attribute__((unused))
|
|
#define nsec 1000000000
|
|
|
|
CAMLprim value caml_rdtsc (__unit) {
|
|
#if defined (__x86__)
|
|
return Val_long (__rdtsc ());
|
|
#else
|
|
#warning Disabling RDTSC.
|
|
return Val_long (0);
|
|
#endif
|
|
}
|
|
|
|
/* This will break on some, or all, of: Windows, macOS, Mirage.
|
|
* Please fill in the missing definitions.
|
|
*/
|
|
CAMLprim value caml_microtime (__unit) {
|
|
struct timespec ts;
|
|
clock_gettime (CLOCK_MONOTONIC, &ts);
|
|
return Val_long ((intnat) ts.tv_sec * nsec + (intnat) ts.tv_nsec);
|
|
}
|