| //===- 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); |
| } |
| } |