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//===- Timer.cpp ----------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lld/Common/Timer.h"
#include "lld/Common/ErrorHandler.h"
#include "llvm/Support/Format.h"
using namespace lld;
using namespace llvm;
ScopedTimer::ScopedTimer(Timer &T) : T(&T) { T.start(); }
void ScopedTimer::stop() {
if (!T)
return;
T->stop();
T = nullptr;
}
ScopedTimer::~ScopedTimer() { stop(); }
Timer::Timer(llvm::StringRef Name) : Name(Name), Parent(nullptr) {}
Timer::Timer(llvm::StringRef Name, Timer &Parent)
: Name(Name), Parent(&Parent) {}
void Timer::start() {
if (Parent && Total.count() == 0)
Parent->Children.push_back(this);
StartTime = std::chrono::high_resolution_clock::now();
}
void Timer::stop() {
Total += (std::chrono::high_resolution_clock::now() - StartTime);
}
Timer &Timer::root() {
static Timer RootTimer("Total Link Time");
return RootTimer;
}
void Timer::print() {
double TotalDuration = static_cast<double>(root().millis());
// We want to print the grand total under all the intermediate phases, so we
// print all children first, then print the total under that.
for (const auto &Child : Children)
Child->print(1, TotalDuration);
message(std::string(49, '-'));
root().print(0, root().millis(), false);
}
double Timer::millis() const {
return std::chrono::duration_cast<std::chrono::duration<double, std::milli>>(
Total)
.count();
}
void Timer::print(int Depth, double TotalDuration, bool Recurse) const {
double P = 100.0 * millis() / TotalDuration;
SmallString<32> Str;
llvm::raw_svector_ostream Stream(Str);
std::string S = std::string(Depth * 2, ' ') + Name + std::string(":");
Stream << format("%-30s%5d ms (%5.1f%%)", S.c_str(), (int)millis(), P);
message(Str);
if (Recurse) {
for (const auto &Child : Children)
Child->print(Depth + 1, TotalDuration);
}
}
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