1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef MOJO_SYSTEM_TEST_UTILS_H_ 6 #define MOJO_SYSTEM_TEST_UTILS_H_ 7 8 #include <stdint.h> 9 10 #include "base/basictypes.h" 11 #include "base/callback_forward.h" 12 #include "base/memory/ref_counted.h" 13 #include "base/task_runner.h" 14 #include "base/time/time.h" 15 16 namespace tracked_objects { 17 class Location; 18 } 19 20 namespace mojo { 21 namespace system { 22 namespace test { 23 24 class Stopwatch { 25 public: Stopwatch()26 Stopwatch() {} ~Stopwatch()27 ~Stopwatch() {} 28 Start()29 void Start() { 30 start_time_ = base::TimeTicks::HighResNow(); 31 } 32 Elapsed()33 int64_t Elapsed() { 34 return (base::TimeTicks::HighResNow() - start_time_).InMicroseconds(); 35 } 36 37 private: 38 base::TimeTicks start_time_; 39 40 DISALLOW_COPY_AND_ASSIGN(Stopwatch); 41 }; 42 43 // Posts the given task (to the given task runner) and waits for it to complete. 44 // (Note: Doesn't spin the current thread's message loop, so if you're careless 45 // this could easily deadlock.) 46 void PostTaskAndWait(scoped_refptr<base::TaskRunner> task_runner, 47 const tracked_objects::Location& from_here, 48 const base::Closure& task); 49 50 } // namespace test 51 } // namespace system 52 } // namespace mojo 53 54 #endif // MOJO_SYSTEM_TEST_UTILS_H_ 55