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JitIL: Implemented a simple time profiler. Unfortunately, this is currently for windows only. Please fix it.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6442 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
nodchip 2010-11-19 06:24:59 +00:00
parent 7632a5abd4
commit 13370ca6ca
1 changed files with 78 additions and 0 deletions
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78
Source/Core/Core/Src/PowerPC/Jit64IL/JitIL.cpp
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@ -152,6 +152,60 @@ ps_adds1
*/
//#define ENABLE_JITIL_PROFILING
#ifdef ENABLE_JITIL_PROFILING
// For profiling
// FIXME: This is currently for windows only.
#include <unordered_map>
#include <windows.h>
namespace JitILProfiler {
struct Performance {
u64 toalElapsed;
u64 numberOfCalls;
Performance() : toalElapsed(0), numberOfCalls(0) { }
};
static u64 hash;
static u64 beginTime;
// std::map is a bit slow for this purpose.
static std::tr1::unordered_map<u64, Performance> profiledData;
// These functions need to be static function
// because they are called with ABI_CallFunction().
static void begin(u32 higher, u32 lower) {
hash = (((u64)higher) << 32) | lower;
LARGE_INTEGER largeInteger;
QueryPerformanceCounter(&largeInteger);
beginTime = largeInteger.QuadPart;
}
static void end() {
LARGE_INTEGER largeInteger;
QueryPerformanceCounter(&largeInteger);
const u64 endTime = largeInteger.QuadPart;
const u64 duration = endTime - beginTime;
Performance& performance = profiledData[hash];
performance.toalElapsed += duration;
++performance.numberOfCalls;
}
struct JitILProfilerFinalizer {
virtual ~JitILProfilerFinalizer() {
char buffer[1024];
sprintf(buffer, "JitIL_profiling_%d.csv", time(NULL));
FILE* file = fopen(buffer, "w");
setvbuf(file, NULL, _IOFBF, 1024 * 1024);
fprintf(file, "code hash,total elapsed,number of calls,elapsed per call\n");
for (std::tr1::unordered_map<u64, Performance>::iterator it = profiledData.begin(), itEnd = profiledData.end(); it != itEnd; ++it) {
const u64 codeHash = it->first;
const u64 totalElapsed = it->second.toalElapsed;
const u64 numberOfCalls = it->second.numberOfCalls;
const double elapsedPerCall = totalElapsed / (double)numberOfCalls;
fprintf(file, "%016llx,%lld,%lld,%f\n", codeHash, totalElapsed, numberOfCalls, elapsedPerCall);
}
fclose(file);
file = NULL;
}
} finalizer; // Is this a bad manner?
};
#endif
static int CODE_SIZE = 1024*1024*32;
namespace CPUCompare
@ -292,6 +346,9 @@ void JitIL::Cleanup()
void JitIL::WriteExit(u32 destination, int exit_num)
{
Cleanup();
#ifdef ENABLE_JITIL_PROFILING
ABI_CallFunction(JitILProfiler::end);
#endif
SUB(32, M(&CoreTiming::downcount), js.downcountAmount > 127 ? Imm32(js.downcountAmount) : Imm8(js.downcountAmount));
//If nobody has taken care of this yet (this can be removed when all branches are done)
@ -318,6 +375,9 @@ void JitIL::WriteExitDestInOpArg(const Gen::OpArg& arg)
{
MOV(32, M(&PC), arg);
Cleanup();
#ifdef ENABLE_JITIL_PROFILING
ABI_CallFunction(JitILProfiler::end);
#endif
SUB(32, M(&CoreTiming::downcount), js.downcountAmount > 127 ? Imm32(js.downcountAmount) : Imm8(js.downcountAmount));
JMP(asm_routines.dispatcher, true);
}
@ -326,6 +386,9 @@ void JitIL::WriteRfiExitDestInOpArg(const Gen::OpArg& arg)
{
MOV(32, M(&PC), arg);
Cleanup();
#ifdef ENABLE_JITIL_PROFILING
ABI_CallFunction(JitILProfiler::end);
#endif
SUB(32, M(&CoreTiming::downcount), js.downcountAmount > 127 ? Imm32(js.downcountAmount) : Imm8(js.downcountAmount));
JMP(asm_routines.testExceptions, true);
}
@ -333,6 +396,9 @@ void JitIL::WriteRfiExitDestInOpArg(const Gen::OpArg& arg)
void JitIL::WriteExceptionExit()
{
Cleanup();
#ifdef ENABLE_JITIL_PROFILING
ABI_CallFunction(JitILProfiler::end);
#endif
SUB(32, M(&CoreTiming::downcount), js.downcountAmount > 127 ? Imm32(js.downcountAmount) : Imm8(js.downcountAmount));
JMP(asm_routines.testExceptions, true);
}
@ -467,6 +533,18 @@ const u8* JitIL::DoJit(u32 em_address, PPCAnalyst::CodeBuffer *code_buf, JitBloc
js.rewriteStart = (u8*)GetCodePtr();
#ifdef ENABLE_JITIL_PROFILING
// For profiling
u64 codeHash = -1;
for (int i = 0; i < (int)size; i++)
{
const u64 inst = ops[i].inst.hex;
// Ported from boost::hash
codeHash ^= inst + (codeHash << 6) + (codeHash >> 2);
}
ABI_CallFunctionCC(JitILProfiler::begin, (u32)(codeHash >> 32), (u32)codeHash);
#endif
// Start up IR builder (structure that collects the
// instruction processed by the JIT routines)
ibuild.Reset();