//===- 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) { startTime = std::chrono::high_resolution_clock::now(); } void ScopedTimer::stop() { if (!t) return; t->addToTotal(std::chrono::high_resolution_clock::now() - startTime); t = nullptr; } ScopedTimer::~ScopedTimer() { stop(); } Timer::Timer(llvm::StringRef name) : name(std::string(name)) {} Timer::Timer(llvm::StringRef name, Timer &parent) : name(std::string(name)) { parent.children.push_back(this); } 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) if (child->total > 0) 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>>( std::chrono::nanoseconds(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) if (child->total > 0) child->print(depth + 1, totalDuration); } } |