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lv2: Reimplement sys_timer_usleep

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- Matches ps3 accuracy for all tested values with few exceptions
- Do not enter the host OS kernel if waiting for less than 500us to avoid scheduler issues
This commit is contained in:
kd-11 2018-05-26 13:06:37 +03:00 • committed by kd-11
parent 2adb2ebb00
commit be13a776f4
2 changed files with 27 additions and 7 deletions
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28
rpcs3/Emu/Cell/lv2/sys_timer.cpp
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@ -294,14 +294,28 @@ error_code sys_timer_usleep(ppu_thread& ppu, u64 sleep_time)
sys_timer.trace("sys_timer_usleep(sleep_time=0x%llx)", sleep_time);
u64 passed = 0;
lv2_obj::sleep(ppu, std::max<u64>(1, sleep_time));
while (sleep_time >= passed)
if (sleep_time)
{
thread_ctrl::wait_for(std::max<u64>(1, sleep_time - passed));
passed = get_system_time() - ppu.start_time;
u64 passed = 0;
u64 remaining;
lv2_obj::sleep(ppu, sleep_time);
while (sleep_time > passed)
{
remaining = sleep_time - passed;
if (remaining > 500)
thread_ctrl::wait_for(remaining - (remaining % 500));
else
busy_wait(4000);
passed = (get_system_time() - ppu.start_time);
}
}
else
{
lv2_obj::yield(ppu);
}
return CELL_OK;