|  | //===-- Timer.h -------------------------------------------------*- C++ -*-===// | 
|  | // | 
|  | // 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 | 
|  | // | 
|  | //===----------------------------------------------------------------------===// | 
|  |  | 
|  | #ifndef LLVM_LIBC_UTILS_TESTUTILS_TIMER_H | 
|  | #define LLVM_LIBC_UTILS_TESTUTILS_TIMER_H | 
|  |  | 
|  | #include <stdint.h> | 
|  |  | 
|  | namespace LIBC_NAMESPACE { | 
|  | namespace testing { | 
|  |  | 
|  | class Timer { | 
|  | void *Impl; | 
|  |  | 
|  | public: | 
|  | Timer(); | 
|  | ~Timer(); | 
|  |  | 
|  | void start(); | 
|  | void stop(); | 
|  |  | 
|  | uint64_t nanoseconds() const; | 
|  | }; | 
|  |  | 
|  | } // namespace testing | 
|  | } // namespace LIBC_NAMESPACE | 
|  |  | 
|  | #endif // LLVM_LIBC_UTILS_TESTUTILS_TIMER_H |