michaelh/zephyr
1
0
Fork 0
Code Releases Activity

lib: posix: clock: Add gettimeofday() call

Browse source 
Provide an implementation of gettimeofday().  This uses clock_gettime()
with the CLOCK_REALTIME parameter, which is currently unimplemented, but
will allow clients to call this function once this functionality has
been implemented.

Signed-off-by: David Brown <david.brown@linaro.org>
This commit is contained in:
David Brown 2018-05-23 11:13:50 -06:00 • committed by Anas Nashif
commit e0dda1b4b0
3 changed files with 30 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

2
arch/posix/include/posix_cheats.h
View file

@ -26,6 +26,7 @@
#ifdef CONFIG_PTHREAD_IPC
#define timespec zap_timespec
#define timeval zap_timeval
#define pthread_mutex_t zap_pthread_mutex_t
#define pthread_mutexattr_t zap_pthread_mutexattr_t
#define pthread_cond_t zap_pthread_cond_t
@ -131,6 +132,7 @@
/* Clock */
#define clock_gettime(...) zap_clock_gettime(__VA_ARGS__)
#define clock_settime(...) zap_clock_settime(__VA_ARGS__)
#define gettimeofday(...) zap_clock_gettimeofday(__VA_ARGS__)
/* Timer */
#define timer_create(...) zap_timer_create(__VA_ARGS__)

7
include/posix/time.h
View file

@ -20,6 +20,11 @@ struct itimerspec {
struct timespec it_value; /* Timer expiration */
};
struct timeval {
signed int tv_sec;
signed int tv_usec;
};
#include <kernel.h>
#include <errno.h>
#include "sys/types.h"
@ -63,6 +68,8 @@ int timer_gettime(timer_t timerid, struct itimerspec *its);
int timer_settime(timer_t timerid, int flags, const struct itimerspec *value,
struct itimerspec *ovalue);
int gettimeofday(struct timeval *tv, const void *tz);
#ifdef __cplusplus
}
#endif

21
lib/posix/clock.c
View file

@ -29,3 +29,24 @@ int clock_gettime(clockid_t clock_id, struct timespec *ts)
return 0;
}
/**
* @brief Get current real time.
*
* See IEEE 1003.1
*/
int gettimeofday(struct timeval *tv, const void *tz)
{
struct timespec ts;
int res;
/* As per POSIX, "if tzp is not a null pointer, the behavior
* is unspecified." "tzp" is the "tz" parameter above. */
ARG_UNUSED(tv);
res = clock_gettime(CLOCK_REALTIME, &ts);
tv->tv_sec = ts.tv_sec;
tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC;
return res;
}