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//===-- Core/PerfSupport.cpp - Perf measurement helpers -------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief This file provides implementations for performance measuring helpers.
///
//===----------------------------------------------------------------------===//
#include "PerfSupport.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/raw_ostream.h"
void collectSourcePerfData(const Transform &T, SourcePerfData &Data) {
for (Transform::TimingVec::const_iterator I = T.timing_begin(),
E = T.timing_end();
I != E; ++I) {
SourcePerfData::iterator DataI = Data.insert(
SourcePerfData::value_type(I->first, std::vector<PerfItem>())).first;
DataI->second
.push_back(PerfItem(T.getName(), I->second.getProcessTime() * 1000.0));
}
}
void writePerfDataJSON(
const llvm::StringRef DirectoryName,
const SourcePerfData &TimingResults) {
// Create directory path if it doesn't exist
llvm::sys::fs::create_directories(DirectoryName);
// Get PID and current time.
// FIXME: id_type on Windows is NOT a process id despite the function name.
// Need to call GetProcessId() providing it what get_id() returns. For now
// disabling PID-based file names until this is fixed properly.
//llvm::sys::self_process *SP = llvm::sys::process::get_self();
//id_type Pid = SP->get_id();
unsigned Pid = 0;
llvm::TimeRecord T = llvm::TimeRecord::getCurrentTime();
std::string FileName;
llvm::raw_string_ostream SS(FileName);
SS << DirectoryName << "/" << static_cast<int>(T.getWallTime()) << "_" << Pid
<< ".json";
std::string ErrorInfo;
llvm::raw_fd_ostream FileStream(SS.str().c_str(), ErrorInfo);
FileStream << "{\n";
FileStream << " \"Sources\" : [\n";
for (SourcePerfData::const_iterator I = TimingResults.begin(),
E = TimingResults.end();
I != E; ++I) {
// Terminate the last source with a comma before continuing to the next one.
if (I != TimingResults.begin())
FileStream << ",\n";
FileStream << " {\n";
FileStream << " \"Source \" : \"" << I->first << "\",\n";
FileStream << " \"Data\" : [\n";
for (std::vector<PerfItem>::const_iterator IE = I->second.begin(),
EE = I->second.end();
IE != EE; ++IE) {
// Terminate the last perf item with a comma before continuing to the next
// one.
if (IE != I->second.begin())
FileStream << ",\n";
FileStream << " {\n";
FileStream << " \"TimerId\" : \"" << IE->Label << "\",\n";
FileStream << " \"Time\" : " << llvm::format("%.2f", IE->Duration)
<< "\n";
FileStream << " }";
}
FileStream << "\n ]\n";
FileStream << " }";
}
FileStream << "\n ]\n";
FileStream << "}";
}
void dumpPerfData(const SourcePerfData &Data) {
for (SourcePerfData::const_iterator I = Data.begin(), E = Data.end(); I != E;
++I) {
llvm::errs() << I->first << ":\n";
for (std::vector<PerfItem>::const_iterator VecI = I->second.begin(),
VecE = I->second.end();
VecI != VecE; ++VecI) {
llvm::errs() << " " << VecI->Label << ": "
<< llvm::format("%.1f", VecI->Duration) << "ms\n";
}
}
}
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