1 /* 2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_TEST_TEST_SUPPORT_TRACE_TO_STDERR_H_ 12 #define WEBRTC_TEST_TEST_SUPPORT_TRACE_TO_STDERR_H_ 13 14 #include "webrtc/system_wrappers/include/trace.h" 15 16 namespace webrtc { 17 namespace test { 18 19 // Upon constructing an instance of this class, all traces will be redirected 20 // to stderr. At destruction, redirection is halted. 21 class TraceToStderr : public TraceCallback { 22 public: 23 TraceToStderr(); 24 // Set |override_time| to true to control the time printed with each trace 25 // through SetTimeSeconds(). Otherwise, the trace's usual wallclock time is 26 // used. 27 // 28 // This is useful for offline test tools, where the file time is much more 29 // informative than the real time. 30 explicit TraceToStderr(bool override_time); 31 ~TraceToStderr() override; 32 33 // Every subsequent trace printout will use |time|. Has no effect if 34 // |override_time| in the constructor was set to false. 35 // 36 // No attempt is made to ensure thread-safety between the trace writing and 37 // time updating. In tests, since traces will normally be triggered by the 38 // main thread doing the time updating, this should be of no concern. 39 virtual void SetTimeSeconds(float time); 40 41 // Implements TraceCallback. 42 void Print(TraceLevel level, const char* msg_array, int length) override; 43 44 private: 45 bool override_time_; 46 float time_seconds_; 47 }; 48 49 } // namespace test 50 } // namespace webrtc 51 52 #endif // WEBRTC_TEST_TEST_SUPPORT_TRACE_TO_STDERR_H_ 53
