gallium/os: Cleanup up os_time_get/os_time_get_nano.

- Re-implement os_time_get in terms of os_time_get_nano() for consistency
- Use CLOCK_MONOTONIC as recommended
- Only use clock_gettime on Linux for now.

Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
José Fonseca 2012-12-05 08:59:21 +00:00
parent 7e14293556
commit d296326e06
3 changed files with 20 additions and 22 deletions

View file

@ -500,7 +500,7 @@ def generate(env):
libs = []
if env['platform'] in ('darwin', 'freebsd', 'linux', 'posix', 'sunos'):
libs += ['m', 'pthread', 'dl']
if env['platform'] in 'linux':
if env['platform'] in ('linux',):
libs += ['rt']
env.Append(LIBS = libs)

View file

@ -48,13 +48,19 @@
int64_t
os_time_get(void)
os_time_get_nano(void)
{
#if defined(PIPE_OS_UNIX)
#if defined(PIPE_OS_LINUX)
struct timespec tv;
clock_gettime(CLOCK_MONOTONIC, &tv);
return tv.tv_nsec + tv.tv_sec*INT64_C(1000000000);
#elif defined(PIPE_OS_UNIX)
struct timeval tv;
gettimeofday(&tv, NULL);
return tv.tv_usec + tv.tv_sec*1000000LL;
return tv.tv_usec*INT64_C(1000) + tv.tv_sec*INT64_C(1000000000);
#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
@ -63,22 +69,12 @@ os_time_get(void)
if(!frequency.QuadPart)
QueryPerformanceFrequency(&frequency);
QueryPerformanceCounter(&counter);
return counter.QuadPart*INT64_C(1000000)/frequency.QuadPart;
return counter.QuadPart*INT64_C(1000000000)/frequency.QuadPart;
#endif
}
#else
#error Unsupported OS
uint64_t
os_time_get_nano(void)
{
#if defined(PIPE_OS_UNIX)
struct timespec tv;
clock_gettime(CLOCK_REALTIME, &tv);
return tv.tv_nsec + tv.tv_sec * 1000000000LL;
#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
return os_time_get() * 1000;
#endif
}

View file

@ -51,17 +51,19 @@ extern "C" {
/*
* Get the current time in microseconds from an unknown base.
* Get the current time in nanoseconds from an unknown base.
*/
int64_t
os_time_get(void);
os_time_get_nano(void);
/*
* Get the current time in nanoseconds from an unknown base.
* Get the current time in microseconds from an unknown base.
*/
uint64_t
os_time_get_nano(void);
static INLINE int64_t
os_time_get(void) {
return os_time_get_nano() * 1000;
}
/*