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