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#include "jemalloc/internal/jemalloc_preamble.h"
#include "jemalloc/internal/jemalloc_internal_includes.h"
#include "jemalloc/internal/nstime.h"
#include "jemalloc/internal/assert.h"
#define BILLION UINT64_C(1000000000)
#define MILLION UINT64_C(1000000)
void
nstime_init(nstime_t *time, uint64_t ns) {
time->ns = ns;
}
void
nstime_init2(nstime_t *time, uint64_t sec, uint64_t nsec) {
time->ns = sec * BILLION + nsec;
}
uint64_t
nstime_ns(const nstime_t *time) {
return time->ns;
}
uint64_t
nstime_msec(const nstime_t *time) {
return time->ns / MILLION;
}
uint64_t
nstime_sec(const nstime_t *time) {
return time->ns / BILLION;
}
uint64_t
nstime_nsec(const nstime_t *time) {
return time->ns % BILLION;
}
void
nstime_copy(nstime_t *time, const nstime_t *source) {
*time = *source;
}
int
nstime_compare(const nstime_t *a, const nstime_t *b) {
return (a->ns > b->ns) - (a->ns < b->ns);
}
void
nstime_add(nstime_t *time, const nstime_t *addend) {
assert(UINT64_MAX - time->ns >= addend->ns);
time->ns += addend->ns;
}
void
nstime_iadd(nstime_t *time, uint64_t addend) {
assert(UINT64_MAX - time->ns >= addend);
time->ns += addend;
}
void
nstime_subtract(nstime_t *time, const nstime_t *subtrahend) {
assert(nstime_compare(time, subtrahend) >= 0);
time->ns -= subtrahend->ns;
}
void
nstime_isubtract(nstime_t *time, uint64_t subtrahend) {
assert(time->ns >= subtrahend);
time->ns -= subtrahend;
}
void
nstime_imultiply(nstime_t *time, uint64_t multiplier) {
assert((((time->ns | multiplier) & (UINT64_MAX << (sizeof(uint64_t) <<
2))) == 0) || ((time->ns * multiplier) / multiplier == time->ns));
time->ns *= multiplier;
}
void
nstime_idivide(nstime_t *time, uint64_t divisor) {
assert(divisor != 0);
time->ns /= divisor;
}
uint64_t
nstime_divide(const nstime_t *time, const nstime_t *divisor) {
assert(divisor->ns != 0);
return time->ns / divisor->ns;
}
#ifdef _WIN32
# define NSTIME_MONOTONIC true
static void
nstime_get(nstime_t *time) {
FILETIME ft;
uint64_t ticks_100ns;
GetSystemTimeAsFileTime(&ft);
ticks_100ns = (((uint64_t)ft.dwHighDateTime) << 32) | ft.dwLowDateTime;
nstime_init(time, ticks_100ns * 100);
}
#elif defined(JEMALLOC_HAVE_CLOCK_MONOTONIC_COARSE)
# define NSTIME_MONOTONIC true
static void
nstime_get(nstime_t *time) {
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC_COARSE, &ts);
nstime_init2(time, ts.tv_sec, ts.tv_nsec);
}
#elif defined(JEMALLOC_HAVE_CLOCK_MONOTONIC)
# define NSTIME_MONOTONIC true
static void
nstime_get(nstime_t *time) {
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
nstime_init2(time, ts.tv_sec, ts.tv_nsec);
}
#elif defined(JEMALLOC_HAVE_MACH_ABSOLUTE_TIME)
# define NSTIME_MONOTONIC true
static void
nstime_get(nstime_t *time) {
nstime_init(time, mach_absolute_time());
}
#else
# define NSTIME_MONOTONIC false
static void
nstime_get(nstime_t *time) {
struct timeval tv;
gettimeofday(&tv, NULL);
nstime_init2(time, tv.tv_sec, tv.tv_usec * 1000);
}
#endif
static bool
nstime_monotonic_impl(void) {
return NSTIME_MONOTONIC;
#undef NSTIME_MONOTONIC
}
nstime_monotonic_t *JET_MUTABLE nstime_monotonic = nstime_monotonic_impl;
static bool
nstime_update_impl(nstime_t *time) {
nstime_t old_time;
nstime_copy(&old_time, time);
nstime_get(time);
/* Handle non-monotonic clocks. */
if (unlikely(nstime_compare(&old_time, time) > 0)) {
nstime_copy(time, &old_time);
return true;
}
return false;
}
nstime_update_t *JET_MUTABLE nstime_update = nstime_update_impl;
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