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Use get_now directly in system_events instead of qpc

This commit is contained in:
ergo720 2023-03-12 16:50:56 +01:00
parent 5d510752e6
commit 7dc2ac080f
1 changed files with 3 additions and 9 deletions
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12
src/common/Timer.cpp
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@ -43,7 +43,6 @@
static uint64_t last_qpc; // last time when QPC was called
static uint64_t last_time; // starting time point until the next periodic event is due
static uint64_t exec_time; // total execution time in us since the emulation started
static uint64_t pit_last; // last time when the pit time was updated
static uint64_t pit_last_qpc; // last QPC time of the pit
@ -163,21 +162,16 @@ xbox::void_xt NTAPI system_events(xbox::PVOID arg)
SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_ABOVE_NORMAL);
while (true) {
const uint64_t nearest_next = get_next(get_now());
QueryPerformanceCounter(reinterpret_cast<LARGE_INTEGER *>(&last_time));
const uint64_t last_time = get_now();
const uint64_t nearest_next = get_next(last_time);
while (true) {
update_non_periodic_events();
LARGE_INTEGER now;
QueryPerformanceCounter(&now);
uint64_t elapsed_us = static_cast<uint64_t>(now.QuadPart) - last_time;
elapsed_us *= 1000000;
elapsed_us /= HostQPCFrequency;
uint64_t elapsed_us = get_now() - last_time;
if (elapsed_us >= nearest_next) {
break;
}
std::this_thread::yield();
_mm_pause();
}
}
}