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vk: Tune event polling for higher throughput

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kd-11 2021-03-04 00:23:52 +03:00 • committed by kd-11
parent 585837a3f0
commit bd6c187fcd
1 changed files with 12 additions and 6 deletions
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18
rpcs3/Emu/RSX/VK/vkutils/sync.cpp
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@ -5,6 +5,8 @@
#include "sync.h"
#include "shared.h"
#include "util/sysinfo.hpp"
extern u64 get_system_time();
namespace vk
@ -148,7 +150,7 @@ namespace vk
}
else
{
return (*m_value == 0xDEADBEEF) ? VK_EVENT_SET : VK_EVENT_RESET;
return (*m_value == 0xCAFEBABE) ? VK_EVENT_RESET : VK_EVENT_SET;
}
}
@ -180,7 +182,10 @@ namespace vk
VkResult wait_for_event(event* pEvent, u64 timeout)
{
u64 t = 0;
// Convert timeout to TSC cycles. Timeout accuracy isn't super-important, only fast response when event is signaled (within 10us if possible)
timeout *= (utils::get_tsc_freq() / 1'000'000);
u64 start = 0;
while (true)
{
switch (const auto status = pEvent->status())
@ -196,20 +201,21 @@ namespace vk
if (timeout)
{
if (!t)
if (!start)
{
t = get_system_time();
start = __rdtsc();
continue;
}
if ((get_system_time() - t) > timeout)
if (const auto now = __rdtsc();
(now > start) &&
(now - start) > timeout)
{
rsx_log.error("[vulkan] vk::wait_for_event has timed out!");
return VK_TIMEOUT;
}
}
//std::this_thread::yield();
#ifdef _MSC_VER
_mm_pause();
#else