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test gettimeofday ok

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This commit is contained in:
zhengshuxin 2019-07-31 16:32:17 +08:00
parent 0ee5867c9d
commit a0b258eb28
2 changed files with 31 additions and 17 deletions
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2
lib_fiber/c/include/fiber/fiber_base.h
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@ -330,6 +330,8 @@ FIBER_API void acl_fiber_set_error(int errnum);
*/
FIBER_API int acl_fiber_set_fdlimit(int limit);
FIBER_API int acl_fiber_gettimeofday(struct timeval *tv, struct timezone *tz);
/****************************************************************************/
#ifdef __cplusplus

40
lib_fiber/c/src/common/gettimeofday.c
View File

@ -1,4 +1,5 @@
#include "stdafx.h"
#include "fiber/fiber_base.h"
#include "pthread_patch.h"
#include "msg.h"
#include "init.h"
@ -142,13 +143,13 @@ int gettimeofday(struct timeval *tv, struct timezone *tz)
#elif defined(USE_FAST_TIME)
static inline uint64_t rte_rdtsc(void)
static inline unsigned long long rte_rdtsc(void)
{
union {
uint64_t tsc_64;
struct {
uint32_t lo_32;
uint32_t hi_32;
unsigned lo_32;
unsigned hi_32;
};
} tsc;
@ -160,36 +161,47 @@ static inline uint64_t rte_rdtsc(void)
static __thread unsigned long long __one_msec;
static __thread unsigned long long __one_sec;
static __thread unsigned long long __metric_diff;
static void set_time_metric(void)
{
uint64_t end;
uint64_t begin = rte_rdtsc();
unsigned long long now, startup, end;
unsigned long long begin = rte_rdtsc();
#define MSEC_ONE 1000
usleep(MSEC_ONE);
end = rte_rdtsc();
__one_msec = end - begin;
__one_sec = __one_msec * 1000;
startup = rte_rdtsc();
now = time(NULL) * __one_sec;
if (now > startup) {
__metric_diff = now - startup;
} else {
__metric_diff = 0;
}
}
static __thread unsigned long long __startup;
int gettimeofday(struct timeval *tv, struct timezone *tz fiber_unused)
int acl_fiber_gettimeofday(struct timeval *tv, struct timezone *tz fiber_unused)
{
unsigned long long diff;
unsigned long long now;
if (__one_msec == 0) {
set_time_metric();
}
if (__startup == 0) {
__startup = rte_rdtsc();
}
diff = rte_rdtsc() - __startup;
tv->tv_sec = diff / __one_sec;
tv->tv_usec = (1000 * (diff % __one_sec) / __one_msec);
now = rte_rdtsc() + __metric_diff;
tv->tv_sec = now / __one_sec;
tv->tv_usec = (1000 * (now % __one_sec) / __one_msec);
return 0;
}
int gettimeofday(struct timeval *tv, struct timezone *tz)
{
return acl_fiber_gettimeofday(tv, tz);
}
#endif