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outline portable implementation to replace clock_gettime()

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Robin Gareus 2014-05-16 18:19:41 +02:00 • committed by Paul Davis
parent 253fb8f4a6
commit 6eaa121474
1 changed files with 15 additions and 7 deletions
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22
libs/backends/wavesaudio/wavesapi/miscutils/UMicroseconds.cpp
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@ -10,22 +10,30 @@
namespace wvNS { namespace wvNS {
UMicroseconds& UMicroseconds::ReadTime() UMicroseconds& UMicroseconds::ReadTime()
{ {
// Note: g_get_monotonic_time() may be a viable alternative
// (it is on Linux and OSX); if not, this code should really go into libpbd
#ifdef PLATFORM_WINDOWS #ifdef PLATFORM_WINDOWS
LARGE_INTEGER Frequency, Count ; LARGE_INTEGER Frequency, Count ;
QueryPerformanceFrequency(&Frequency) ; QueryPerformanceFrequency(&Frequency) ;
QueryPerformanceCounter(&Count); QueryPerformanceCounter(&Count);
theTime = uint64_t((Count.QuadPart * 1000000.0 / Frequency.QuadPart)); theTime = uint64_t((Count.QuadPart * 1000000.0 / Frequency.QuadPart));
#endif
#if defined(__linux__) || defined(__APPLE__) #elif defined __MACH__ // OSX, BSD..
// Mac code replaced by posix calls, to reduce Carbon dependency.
timeval buf;
gettimeofday(&buf,NULL); clock_serv_t cclock;
mach_timespec_t mts;
host_get_clock_service(mach_host_self(), SYSTEM_CLOCK, &cclock);
clock_get_time(cclock, &mts);
mach_port_deallocate(mach_task_self(), cclock);
theTime = (uint64_t)mts.tv_sec * 1e6 + (uint64_t)mts.tv_nsec / 1000;
#else // Linux, POSIX
struct timespec *ts
clock_gettime(CLOCK_MONOTONIC, ts);
theTime = (uint64_t)ts.tv_sec * 1e6 + (uint64_t)buf.tv_nsec / 1000;
// micro sec
theTime = uint64_t(buf.tv_sec) * 1000*1000 + buf.tv_usec;
#endif #endif
return *this; return *this;