Created
December 12, 2016 21:15
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Minimal exception speed test case
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#include <Windows.h> | |
#include <iostream> | |
// exception handler | |
int EmuException(LPEXCEPTION_POINTERS e) | |
{ | |
// Increment EIP to skip the faulting instruction | |
e->ContextRecord->Eip += 1; | |
return EXCEPTION_CONTINUE_EXECUTION; | |
} | |
int main(int argc, char* argv[]) | |
{ | |
int number = 0; | |
int iterations = 1000000; | |
__try { | |
std::cout << "Timing " << iterations << " iterations with No Exceptions" << std::endl; | |
ULONGLONG start = GetTickCount64(); | |
for (int i = 0; i < iterations; i++) { | |
number++; | |
} | |
std::cout << "Execution took " << (GetTickCount64() - start) << "ms" << std::endl; | |
number = 0; | |
start = GetTickCount64(); | |
std::cout << "Timing " << iterations << " iterations with Exceptions" << std::endl; | |
for (int i = 0; i < iterations; i++) { | |
_asm{ int 3 }; | |
} | |
std::cout << "Execution took " << (GetTickCount64() - start) << "ms" << std::endl; | |
} __except (EmuException(GetExceptionInformation())) | |
{ | |
printf("Emu: WARNING!! Problem with ExceptionFilter\n"); | |
} | |
std::cout << "Completed!"; | |
for (;;); | |
} |
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