71 lines
2.0 KiB
C++
71 lines
2.0 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) {
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startTime = std::chrono::high_resolution_clock::now();
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}
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void ScopedTimer::stop() {
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if (!t)
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return;
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t->addToTotal(std::chrono::high_resolution_clock::now() - startTime);
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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) : total(0), name(std::string(name)) {}
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Timer::Timer(llvm::StringRef name, Timer &parent)
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: total(0), name(std::string(name)) {
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parent.children.push_back(this);
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}
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void Timer::print() {
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double totalDuration = static_cast<double>(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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if (child->total > 0)
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child->print(1, totalDuration);
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message(std::string(50, '-'));
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print(0, 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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std::chrono::nanoseconds(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%7d 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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if (child->total > 0)
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child->print(depth + 1, totalDuration);
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}
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}
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