mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2024-11-15 05:47:56 -07:00
4d610cc30e
This both tests that they work correctly and prints timing information if you run it manually.
78 lines
2.1 KiB
C++
78 lines
2.1 KiB
C++
#include <chrono>
|
|
|
|
#include "Common/CommonTypes.h"
|
|
#include "Common/Timer.h"
|
|
#include "Core/MemTools.h"
|
|
#include "Core/PowerPC/JitCommon/JitBase.h"
|
|
|
|
// include order is important
|
|
#include <gtest/gtest.h>
|
|
|
|
#if _M_X86_64 || _M_ARM_32
|
|
enum
|
|
{
|
|
#ifdef _WIN32
|
|
PAGE_GRAN = 0x10000
|
|
#else
|
|
PAGE_GRAN = 0x1000
|
|
#endif
|
|
};
|
|
|
|
class PageFaultFakeJit : public JitBase
|
|
{
|
|
public:
|
|
// CPUCoreBase methods
|
|
void Init() override {}
|
|
void Shutdown() override {}
|
|
void ClearCache() override {}
|
|
void Run() override {}
|
|
void SingleStep() override {}
|
|
const char *GetName() override { return nullptr; }
|
|
|
|
// JitBase methods
|
|
JitBaseBlockCache *GetBlockCache() override { return nullptr; }
|
|
void Jit(u32 em_address) override {}
|
|
const CommonAsmRoutinesBase *GetAsmRoutines() override { return nullptr; }
|
|
|
|
virtual bool HandleFault(uintptr_t access_address, SContext* ctx) override
|
|
{
|
|
m_pre_unprotect_time = std::chrono::high_resolution_clock::now();
|
|
UnWriteProtectMemory(m_data, PAGE_GRAN, /*allowExecute*/ false);
|
|
m_post_unprotect_time = std::chrono::high_resolution_clock::now();
|
|
return true;
|
|
}
|
|
|
|
void* m_data;
|
|
std::chrono::time_point<std::chrono::high_resolution_clock>
|
|
m_pre_unprotect_time, m_post_unprotect_time;
|
|
};
|
|
|
|
|
|
TEST(PageFault, PageFault)
|
|
{
|
|
EMM::InstallExceptionHandler();
|
|
void* data = AllocateMemoryPages(PAGE_GRAN);
|
|
EXPECT_NE(data, nullptr);
|
|
WriteProtectMemory(data, PAGE_GRAN, false);
|
|
|
|
PageFaultFakeJit pfjit;
|
|
jit = &pfjit;
|
|
pfjit.m_data = data;
|
|
|
|
auto start = std::chrono::high_resolution_clock::now();
|
|
*(volatile int*) data = 5;
|
|
auto end = std::chrono::high_resolution_clock::now();
|
|
|
|
#define AS_NS(diff) ((unsigned long long)std::chrono::duration_cast<std::chrono::nanoseconds>(diff).count())
|
|
|
|
EMM::UninstallExceptionHandler();
|
|
jit = nullptr;
|
|
|
|
printf("page fault timing:\n");
|
|
printf("start->HandleFault %llu ns\n", AS_NS(pfjit.m_pre_unprotect_time - start));
|
|
printf("UnWriteProtectMemory %llu ns\n", AS_NS(pfjit.m_post_unprotect_time - pfjit.m_pre_unprotect_time));
|
|
printf("HandleFault->end %llu ns\n", AS_NS(end - pfjit.m_post_unprotect_time));
|
|
printf("total %llu ns\n", AS_NS(end - start));
|
|
}
|
|
#endif
|