1//===- Timer.h ----------------------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLD_COMMON_TIMER_H
10#define LLD_COMMON_TIMER_H
11
12#include "llvm/ADT/DenseMap.h"
13#include "llvm/ADT/StringRef.h"
14#include <assert.h>
15#include <atomic>
16#include <chrono>
17#include <map>
18#include <memory>
19
20namespace lld {
21
22class Timer;
23
24struct ScopedTimer {
25 explicit ScopedTimer(Timer &t);
26
27 ~ScopedTimer();
28
29 void stop();
30
31 std::chrono::time_point<std::chrono::high_resolution_clock> startTime;
32
33 Timer *t = nullptr;
34};
35
36class Timer {
37public:
38 Timer(llvm::StringRef name, Timer &parent);
39
40 static Timer &root();
41
42 void addToTotal(std::chrono::nanoseconds time) { total += time.count(); }
43 void print();
44
45 double millis() const;
46
47private:
48 explicit Timer(llvm::StringRef name);
49 void print(int depth, double totalDuration, bool recurse = true) const;
50
51 std::atomic<std::chrono::nanoseconds::rep> total;
52 std::vector<Timer *> children;
53 std::string name;
54};
55
56} // namespace lld
57
58#endif
59