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time: Use clock_gettime if the monotonic clock is available

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Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Luca Barbato 2014-08-24 18:14:47 +02:00
parent 65e78a2e4b
commit ebef9f5a56
2 changed files with 12 additions and 2 deletions
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4
configure vendored
View File

@ -1432,6 +1432,7 @@ MATH_FUNCS="
SYSTEM_FUNCS="
aligned_malloc
clock_gettime
closesocket
CommandLineToArgvW
CoTaskMemFree
@ -4038,6 +4039,9 @@ check_func_headers malloc.h _aligned_malloc && enable aligned_malloc
check_func ${malloc_prefix}memalign && enable memalign
check_func ${malloc_prefix}posix_memalign && enable posix_memalign
check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt; }
check_func fcntl
check_func fork
check_func gethrtime

10
libavutil/time.c
View File

@ -21,7 +21,9 @@
#include <stddef.h>
#include <stdint.h>
#include <time.h>
#if HAVE_GETTIMEOFDAY
#if HAVE_CLOCK_GETTIME
#include <time.h>
#elif HAVE_GETTIMEOFDAY
#include <sys/time.h>
#endif
#if HAVE_UNISTD_H
@ -36,7 +38,11 @@
int64_t av_gettime(void)
{
#if HAVE_GETTIMEOFDAY
#if HAVE_CLOCK_GETTIME
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
return (int64_t)ts.tv_sec * 100000 + ts.tv_nsec / 1000;
#elif HAVE_GETTIMEOFDAY
struct timeval tv;
gettimeofday(&tv, NULL);
return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;