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libobs/util: Cache windows CPU frequency

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Caches the frequency of the performance counter.  It was supposed to be
caching it already, but it seems that code was unintentionally not
included.

Closes jp9000/obs-studio#1185
This commit is contained in:
JetMeta 2018-02-06 22:50:28 +08:00 committed by jp9000
parent ef7a64228f
commit 18c1f10488
1 changed files with 4 additions and 1 deletions
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5
libobs/util/platform-windows.c
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@ -37,8 +37,11 @@ static uint32_t winver = 0;
static inline uint64_t get_clockfreq(void)
{
if (!have_clockfreq)
if (!have_clockfreq) {
QueryPerformanceFrequency(&clock_freq);
have_clockfreq = true;
}
return clock_freq.QuadPart;
}