#include <grpc/support/port_platform.h>
#include "src/core/lib/gpr/time_precise.h"
#ifdef GPR_POSIX_TIME
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#ifdef __linux__
#include <sys/syscall.h>
#endif
#include <grpc/support/atm.h>
#include <grpc/support/log.h>
#include <grpc/support/time.h>
#include "src/core/lib/gprpp/crash.h"
static struct timespec timespec_from_gpr(gpr_timespec gts) { … }
#if _POSIX_TIMERS > 0 || defined(__OpenBSD__)
static gpr_timespec gpr_from_timespec(struct timespec ts,
gpr_clock_type clock_type) { … }
static const clockid_t clockid_for_gpr_clock[] = …;
void gpr_time_init(void) { … }
static gpr_timespec now_impl(gpr_clock_type clock_type) { … }
#else
#include <mach/mach.h>
#include <mach/mach_time.h>
#include <sys/time.h>
static double g_time_scale = []() {
mach_timebase_info_data_t tb = {0, 1};
mach_timebase_info(&tb);
return static_cast<double>(tb.numer) / static_cast<double>(tb.denom);
}();
static uint64_t g_time_start = mach_absolute_time();
void gpr_time_init(void) { gpr_precise_clock_init(); }
static gpr_timespec now_impl(gpr_clock_type clock) {
gpr_timespec now;
struct timeval now_tv;
double now_dbl;
now.clock_type = clock;
switch (clock) {
case GPR_CLOCK_REALTIME:
gettimeofday(&now_tv, nullptr);
now.tv_sec = now_tv.tv_sec;
now.tv_nsec = now_tv.tv_usec * 1000;
break;
case GPR_CLOCK_MONOTONIC:
now_dbl = 5.0e9 +
((double)(mach_absolute_time() - g_time_start)) * g_time_scale;
now.tv_sec = (int64_t)(now_dbl * 1e-9);
now.tv_nsec = (int32_t)(now_dbl - ((double)now.tv_sec) * 1e9);
break;
case GPR_CLOCK_PRECISE:
gpr_precise_clock_now(&now);
break;
case GPR_TIMESPAN:
abort();
}
while (GPR_UNLIKELY(now.tv_nsec >= 1e9)) {
now.tv_sec++;
now.tv_nsec -= 1e9;
}
while (GPR_UNLIKELY(now.tv_nsec < 0)) {
now.tv_sec--;
now.tv_nsec += 1e9;
}
return now;
}
#endif
gpr_timespec (*gpr_now_impl)(gpr_clock_type clock_type) = …;
gpr_timespec gpr_now(gpr_clock_type clock_type) { … }
void gpr_sleep_until(gpr_timespec until) { … }
#endif