xref: /aosp_15_r20/external/llvm-libc/test/src/math/performance_testing/Timer.h (revision 71db0c75aadcf003ffe3238005f61d7618a3fead)
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 LLVM_LIBC_TEST_SRC_MATH_PERFORMACE_TESTING_TIMER_H
10  #define LLVM_LIBC_TEST_SRC_MATH_PERFORMACE_TESTING_TIMER_H
11  
12  #include "src/__support/macros/config.h"
13  #include <stdint.h>
14  
15  namespace LIBC_NAMESPACE_DECL {
16  namespace testing {
17  
18  class Timer {
19    void *Impl;
20  
21  public:
22    Timer();
23    ~Timer();
24  
25    void start();
26    void stop();
27  
28    uint64_t nanoseconds() const;
29  };
30  
31  } // namespace testing
32  } // namespace LIBC_NAMESPACE_DECL
33  
34  #endif // LLVM_LIBC_TEST_SRC_MATH_PERFORMANCE_TESTING_TIMER_H
35