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/* Copyright (c) 2013, Linaro Limited
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <odp_posix_extensions.h>
#include <time.h>
#include <odp/time.h>
#include <odp/hints.h>
#include <odp_debug_internal.h>
typedef union {
odp_time_t ex;
struct timespec in;
} _odp_time_t;
static odp_time_t start_time;
static inline
uint64_t time_to_ns(odp_time_t time)
{
uint64_t ns;
ns = time.tv_sec * ODP_TIME_SEC_IN_NS;
ns += time.tv_nsec;
return ns;
}
static inline odp_time_t time_diff(odp_time_t t2, odp_time_t t1)
{
odp_time_t time;
time.tv_sec = t2.tv_sec - t1.tv_sec;
time.tv_nsec = t2.tv_nsec - t1.tv_nsec;
if (time.tv_nsec < 0) {
time.tv_nsec += ODP_TIME_SEC_IN_NS;
--time.tv_sec;
}
return time;
}
static inline odp_time_t time_local(void)
{
int ret;
_odp_time_t time;
ret = clock_gettime(CLOCK_MONOTONIC_RAW, &time.in);
if (odp_unlikely(ret != 0))
ODP_ABORT("clock_gettime failed\n");
return time_diff(time.ex, start_time);
}
static inline int time_cmp(odp_time_t t2, odp_time_t t1)
{
if (t2.tv_sec < t1.tv_sec)
return -1;
if (t2.tv_sec > t1.tv_sec)
return 1;
return t2.tv_nsec - t1.tv_nsec;
}
static inline odp_time_t time_sum(odp_time_t t1, odp_time_t t2)
{
odp_time_t time;
time.tv_sec = t2.tv_sec + t1.tv_sec;
time.tv_nsec = t2.tv_nsec + t1.tv_nsec;
if (time.tv_nsec >= (long)ODP_TIME_SEC_IN_NS) {
time.tv_nsec -= ODP_TIME_SEC_IN_NS;
++time.tv_sec;
}
return time;
}
static inline odp_time_t time_local_from_ns(uint64_t ns)
{
odp_time_t time;
time.tv_sec = ns / ODP_TIME_SEC_IN_NS;
time.tv_nsec = ns - time.tv_sec * ODP_TIME_SEC_IN_NS;
return time;
}
static inline void time_wait_until(odp_time_t time)
{
odp_time_t cur;
do {
cur = time_local();
} while (time_cmp(time, cur) > 0);
}
static inline uint64_t time_local_res(void)
{
int ret;
struct timespec tres;
ret = clock_getres(CLOCK_MONOTONIC_RAW, &tres);
if (odp_unlikely(ret != 0))
ODP_ABORT("clock_getres failed\n");
return ODP_TIME_SEC_IN_NS / (uint64_t)tres.tv_nsec;
}
odp_time_t odp_time_local(void)
{
return time_local();
}
odp_time_t odp_time_global(void)
{
return time_local();
}
odp_time_t odp_time_diff(odp_time_t t2, odp_time_t t1)
{
return time_diff(t2, t1);
}
uint64_t odp_time_to_ns(odp_time_t time)
{
return time_to_ns(time);
}
odp_time_t odp_time_local_from_ns(uint64_t ns)
{
return time_local_from_ns(ns);
}
odp_time_t odp_time_global_from_ns(uint64_t ns)
{
return time_local_from_ns(ns);
}
int odp_time_cmp(odp_time_t t2, odp_time_t t1)
{
return time_cmp(t2, t1);
}
odp_time_t odp_time_sum(odp_time_t t1, odp_time_t t2)
{
return time_sum(t1, t2);
}
uint64_t odp_time_local_res(void)
{
return time_local_res();
}
uint64_t odp_time_global_res(void)
{
return time_local_res();
}
void odp_time_wait_ns(uint64_t ns)
{
odp_time_t cur = time_local();
odp_time_t wait = time_local_from_ns(ns);
odp_time_t end_time = time_sum(cur, wait);
time_wait_until(end_time);
}
void odp_time_wait_until(odp_time_t time)
{
return time_wait_until(time);
}
uint64_t odp_time_to_u64(odp_time_t time)
{
int ret;
struct timespec tres;
uint64_t resolution;
ret = clock_getres(CLOCK_MONOTONIC_RAW, &tres);
if (odp_unlikely(ret != 0))
ODP_ABORT("clock_getres failed\n");
resolution = (uint64_t)tres.tv_nsec;
return time_to_ns(time) / resolution;
}
int odp_time_init_global(void)
{
int ret;
_odp_time_t time;
ret = clock_gettime(CLOCK_MONOTONIC_RAW, &time.in);
start_time = ret ? ODP_TIME_NULL : time.ex;
return ret;
}
int odp_time_term_global(void)
{
return 0;
}
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