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#include "foundation_system.h"
#ifdef FOUNDATION_SYSTEM_API_NO_CLOCK
typedef enum {
FOUNDATION_CLOCK_REALTIME,
FOUNDATION_CLOCK_MONOTONIC,
FOUNDATION_CLOCK_PROCESS_CPUTIME_ID,
FOUNDATION_CLOCK_THREAD_CPUTIME_ID
} foundation_clockid_t;
#ifdef FOUNDATION_SYSTEM_MACOS
#include <time.h>
#include <mach/clock.h>
#include <mach/mach.h>
#include <mach/mach_time.h>
/* OSX MONOTONIC COMPAT:
* http://web.archive.org/web/20100517095152/http://www.wand.net.nz/~smr26/wordpress/2009/01/19/monotonic-time-in-mac-os-x/comment-page-1/
*/
static mach_timebase_info_data_t timebase = {0,0};
int foundation_time_clock_getres(unsigned int clockid, struct timespec *timespec)
{
switch (clockid) {
/* clockid = 1 (FOUNDATION_CLOCK_MONOTONIC), or any other value */
case FOUNDATION_CLOCK_MONOTONIC:
if (timebase.denom == 0) mach_timebase_info(&timebase);
timespec->tv_sec = 0;
timespec->tv_nsec = timebase.numer / timebase.denom;
break;
/* clockid = 0 (FOUNDATION_CLOCK_REALTIME), or any other value */
case FOUNDATION_CLOCK_REALTIME:
return -1;
}
return -1;
}
int foundation_time_clock_gettime(unsigned int clockid, struct timespec *timespec)
{
clock_serv_t cclock;
mach_timespec_t mts;
switch (clockid) {
#if 0
case CLOCK_MONOTONIC: {
uint64_t t, nanos;
if (timebase.denom == 0) mach_timebase_info(timebase);
t = mach_absolute_time();
nanos = t * (timebase.numer / timebase.denom);
timespec->tv_sec = t / 1e9;
timespec->tv_nsec = t % 1e9;
break;
case CLOCK_PROCESS_CPUTIME_ID:
break;
#endif
case FOUNDATION_CLOCK_MONOTONIC:
host_get_clock_service(mach_host_self(), SYSTEM_CLOCK, &cclock);
clock_get_time(cclock, &mts);
mach_port_deallocate(mach_task_self(), cclock);
timespec->tv_sec = mts.tv_sec;
timespec->tv_nsec = mts.tv_nsec;
break;
case FOUNDATION_CLOCK_REALTIME:
host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
clock_get_time(cclock, &mts);
mach_port_deallocate(mach_task_self(), cclock);
timespec->tv_sec = mts.tv_sec;
timespec->tv_nsec = mts.tv_nsec;
break;
default:
return -1;
}
return 0;
}
#elif defined(FOUNDATION_SYSTEM_WINDOWS)
#include <windows.h>
// from:
// https://stackoverflow.com/questions/5404277/porting-clock-gettime-to-windows
struct timespec { long tv_sec; long tv_nsec; }; //header part
#define BILLION (1E9)
int foundation_time_clock_getres(unsigned int clockid, struct timespec *timespec)
{
}
int foundation_time_clock_gettime(unsigned int clockid, struct timespec *ct)
{
LARGE_INTEGER count;
static LARGE_INTEGER counts_per_sec = { .QuadPart = -1 };
switch (clockid) {
case FOUNDATION_CLOCK_MONOTONIC:
if (counts_per_sec.QuadPart == -1) {
if (0 == QueryPerformanceFrequency(&counts_per_sec)) {
counts_per_sec.QuadPart = 0;
}
}
if ((NULL == ct) || (counts_per_sec.QuadPart <= 0) || (0 == QueryPerformanceCounter(&count))) {
return -1;
}
ct->tv_sec = count.QuadPart / counts_per_sec.QuadPart;
ct->tv_nsec = ((count.QuadPart % counts_per_sec.QuadPart) * BILLION) / counts_per_sec.QuadPart;
break;
default:
return -1;
}
return 0;
}
#endif
#endif
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