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graphics: pause memory-tracking spin loops

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This commit is contained in:
nmzik
2026-10-07 22:27:36 +04:00
parent a87889f032
commit 006875ed4f
3 changed files with 64 additions and 4 deletions
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src/graphics/host_gpu/pageManager.cpp
+13 -1
View File
@@ -15,6 +15,12 @@
#include <mutex>
#include <vector>
#if defined(_MSC_VER)
#include <intrin.h>
#elif defined(__x86_64__)
#include <xmmintrin.h>
#endif
#if KYTY_PLATFORM == KYTY_PLATFORM_WINDOWS
#ifndef NOMINMAX
#define NOMINMAX
@@ -62,7 +68,13 @@ class SpinGuard final {
public:
explicit SpinGuard(std::atomic_flag& lock): m_lock(lock) {
while (m_lock.test_and_set(std::memory_order_acquire)) {
std::atomic_signal_fence(std::memory_order_seq_cst);
#if defined(__x86_64__) || defined(_M_X64)
_mm_pause();
#elif defined(_M_ARM64)
__yield();
#elif defined(__aarch64__)
asm volatile("yield");
#endif
}
}
~SpinGuard() { m_lock.clear(std::memory_order_release); }
src/graphics/host_gpu/regionManager.h
+13 -1
View File
@@ -9,6 +9,12 @@
#include <mutex>
#include <utility>
#if defined(_MSC_VER)
#include <intrin.h>
#elif defined(__x86_64__)
#include <xmmintrin.h>
#endif
#if KYTY_PLATFORM == KYTY_PLATFORM_WINDOWS
#ifndef NOMINMAX
#define NOMINMAX
@@ -32,7 +38,13 @@ public:
const auto thread = CurrentThread();
while (m_lock.test_and_set(std::memory_order_acquire)) {
EXIT_NOT_IMPLEMENTED(m_owner.load(std::memory_order_relaxed) == thread);
std::atomic_signal_fence(std::memory_order_seq_cst);
#if defined(__x86_64__) || defined(_M_X64)
_mm_pause();
#elif defined(_M_ARM64)
__yield();
#elif defined(__aarch64__)
asm volatile("yield");
#endif
}
m_owner.store(thread, std::memory_order_relaxed);
}