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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 "sync.h"
#include "shared.h" #include "shared.h"
#include "util/sysinfo.hpp"
extern u64 get_system_time(); extern u64 get_system_time();
namespace vk namespace vk
@ -148,7 +150,7 @@ namespace vk
} }
else 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) 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) while (true)
{ {
switch (const auto status = pEvent->status()) switch (const auto status = pEvent->status())
@ -196,20 +201,21 @@ namespace vk
if (timeout) if (timeout)
{ {
if (!t) if (!start)
{ {
t = get_system_time(); start = __rdtsc();
continue; 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!"); rsx_log.error("[vulkan] vk::wait_for_event has timed out!");
return VK_TIMEOUT; return VK_TIMEOUT;
} }
} }
//std::this_thread::yield();
#ifdef _MSC_VER #ifdef _MSC_VER
_mm_pause(); _mm_pause();
#else #else