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Additional comments regarding sleep implementation.

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This commit is contained in:
binary1248 2013-10-07 08:34:23 +02:00
parent 20db4969c5
commit 50332a8186
2 changed files with 10 additions and 6 deletions
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8
src/SFML/System/Unix/SleepImpl.cpp
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@ -39,12 +39,16 @@ void sleepImpl(Time time)
{ {
Uint64 usecs = time.asMicroseconds(); Uint64 usecs = time.asMicroseconds();
// construct the time to wait // Construct the time to wait
timespec ti; timespec ti;
ti.tv_nsec = (usecs % 1000000) * 1000; ti.tv_nsec = (usecs % 1000000) * 1000;
ti.tv_sec = usecs / 1000000; ti.tv_sec = usecs / 1000000;
// wait... // Wait...
// If nanosleep returns -1, we check errno. If it is EINTR
// nanosleep was interrupted and has set ti to the remaining
// duration. We continue sleeping until the complete duration
// has passed. We stop sleeping if it was due to an error.
while ((nanosleep(&ti, &ti) == -1) && (errno == EINTR)) while ((nanosleep(&ti, &ti) == -1) && (errno == EINTR))
{ {
} }

8
src/SFML/System/Win32/SleepImpl.cpp
View File

@ -36,17 +36,17 @@ namespace priv
//////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////
void sleepImpl(Time time) void sleepImpl(Time time)
{ {
// get the supported timer resolutions on this system // Get the supported timer resolutions on this system
TIMECAPS tc; TIMECAPS tc;
timeGetDevCaps(&tc, sizeof(TIMECAPS)); timeGetDevCaps(&tc, sizeof(TIMECAPS));
// set the timer resolution to the minimum for the Sleep call // Set the timer resolution to the minimum for the Sleep call
timeBeginPeriod(tc.wPeriodMin); timeBeginPeriod(tc.wPeriodMin);
// wait... // Wait...
::Sleep(time.asMilliseconds()); ::Sleep(time.asMilliseconds());
// reset the timer resolution back to the system default // Reset the timer resolution back to the system default
timeEndPeriod(tc.wPeriodMin); timeEndPeriod(tc.wPeriodMin);
} }