| /* |
| * Copyright 2004 The WebRTC Project Authors. All rights reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include "rtc_base/logging.h" |
| #include "rtc_base/arraysize.h" |
| #include "rtc_base/checks.h" |
| #include "rtc_base/event.h" |
| #include "rtc_base/gunit.h" |
| #include "rtc_base/platform_thread.h" |
| #include "rtc_base/stream.h" |
| #include "test/testsupport/fileutils.h" |
| |
| namespace rtc { |
| |
| template <typename Base> |
| class LogSinkImpl |
| : public LogSink, |
| public Base { |
| public: |
| LogSinkImpl() {} |
| |
| template<typename P> |
| explicit LogSinkImpl(P* p) : Base(p) {} |
| |
| private: |
| void OnLogMessage(const std::string& message) override { |
| static_cast<Base*>(this)->WriteAll( |
| message.data(), message.size(), nullptr, nullptr); |
| } |
| }; |
| |
| class LogMessageForTesting : public LogMessage { |
| public: |
| LogMessageForTesting(const char* file, |
| int line, |
| LoggingSeverity sev, |
| LogErrorContext err_ctx = ERRCTX_NONE, |
| int err = 0) |
| : LogMessage(file, line, sev, err_ctx, err) {} |
| |
| const std::string& get_extra() const { return extra_; } |
| bool is_noop() const { return is_noop_; } |
| #if defined(WEBRTC_ANDROID) |
| const char* get_tag() const { return tag_; } |
| #endif |
| |
| // Returns the contents of the internal log stream. |
| // Note that parts of the stream won't (as is) be available until *after* the |
| // dtor of the parent class has run. So, as is, this only represents a |
| // partially built stream. |
| std::string GetPrintStream() { |
| RTC_DCHECK(!is_finished_); |
| is_finished_ = true; |
| FinishPrintStream(); |
| std::string ret = print_stream_.str(); |
| // Just to make an error even more clear if the stream gets used after this. |
| print_stream_.clear(); |
| return ret; |
| } |
| |
| private: |
| bool is_finished_ = false; |
| }; |
| |
| // Test basic logging operation. We should get the INFO log but not the VERBOSE. |
| // We should restore the correct global state at the end. |
| TEST(LogTest, SingleStream) { |
| int sev = LogMessage::GetLogToStream(nullptr); |
| |
| std::string str; |
| LogSinkImpl<StringStream> stream(&str); |
| LogMessage::AddLogToStream(&stream, LS_INFO); |
| EXPECT_EQ(LS_INFO, LogMessage::GetLogToStream(&stream)); |
| |
| RTC_LOG(LS_INFO) << "INFO"; |
| RTC_LOG(LS_VERBOSE) << "VERBOSE"; |
| EXPECT_NE(std::string::npos, str.find("INFO")); |
| EXPECT_EQ(std::string::npos, str.find("VERBOSE")); |
| |
| LogMessage::RemoveLogToStream(&stream); |
| EXPECT_EQ(LS_NONE, LogMessage::GetLogToStream(&stream)); |
| |
| EXPECT_EQ(sev, LogMessage::GetLogToStream(nullptr)); |
| } |
| |
| // Test using multiple log streams. The INFO stream should get the INFO message, |
| // the VERBOSE stream should get the INFO and the VERBOSE. |
| // We should restore the correct global state at the end. |
| TEST(LogTest, MultipleStreams) { |
| int sev = LogMessage::GetLogToStream(nullptr); |
| |
| std::string str1, str2; |
| LogSinkImpl<StringStream> stream1(&str1), stream2(&str2); |
| LogMessage::AddLogToStream(&stream1, LS_INFO); |
| LogMessage::AddLogToStream(&stream2, LS_VERBOSE); |
| EXPECT_EQ(LS_INFO, LogMessage::GetLogToStream(&stream1)); |
| EXPECT_EQ(LS_VERBOSE, LogMessage::GetLogToStream(&stream2)); |
| |
| RTC_LOG(LS_INFO) << "INFO"; |
| RTC_LOG(LS_VERBOSE) << "VERBOSE"; |
| |
| EXPECT_NE(std::string::npos, str1.find("INFO")); |
| EXPECT_EQ(std::string::npos, str1.find("VERBOSE")); |
| EXPECT_NE(std::string::npos, str2.find("INFO")); |
| EXPECT_NE(std::string::npos, str2.find("VERBOSE")); |
| |
| LogMessage::RemoveLogToStream(&stream2); |
| LogMessage::RemoveLogToStream(&stream1); |
| EXPECT_EQ(LS_NONE, LogMessage::GetLogToStream(&stream2)); |
| EXPECT_EQ(LS_NONE, LogMessage::GetLogToStream(&stream1)); |
| |
| EXPECT_EQ(sev, LogMessage::GetLogToStream(nullptr)); |
| } |
| |
| class LogThread { |
| public: |
| LogThread() : thread_(&ThreadEntry, this, "LogThread") {} |
| ~LogThread() { thread_.Stop(); } |
| |
| void Start() { thread_.Start(); } |
| |
| private: |
| void Run() { |
| // LS_SENSITIVE by default to avoid cluttering up any real logging going on. |
| RTC_LOG(LS_SENSITIVE) << "RTC_LOG"; |
| } |
| |
| static void ThreadEntry(void* p) { static_cast<LogThread*>(p)->Run(); } |
| |
| PlatformThread thread_; |
| Event event_{false, false}; |
| }; |
| |
| // Ensure we don't crash when adding/removing streams while threads are going. |
| // We should restore the correct global state at the end. |
| // This test also makes sure that the 'noop' stream() singleton object, can be |
| // safely used from mutiple threads since the threads log at LS_SENSITIVE |
| // (by default 'noop' entries). |
| TEST(LogTest, MultipleThreads) { |
| int sev = LogMessage::GetLogToStream(nullptr); |
| |
| LogThread thread1, thread2, thread3; |
| thread1.Start(); |
| thread2.Start(); |
| thread3.Start(); |
| |
| LogSinkImpl<NullStream> stream1, stream2, stream3; |
| for (int i = 0; i < 1000; ++i) { |
| LogMessage::AddLogToStream(&stream1, LS_INFO); |
| LogMessage::AddLogToStream(&stream2, LS_VERBOSE); |
| LogMessage::AddLogToStream(&stream3, LS_SENSITIVE); |
| LogMessage::RemoveLogToStream(&stream1); |
| LogMessage::RemoveLogToStream(&stream2); |
| LogMessage::RemoveLogToStream(&stream3); |
| } |
| |
| EXPECT_EQ(sev, LogMessage::GetLogToStream(nullptr)); |
| } |
| |
| |
| TEST(LogTest, WallClockStartTime) { |
| uint32_t time = LogMessage::WallClockStartTime(); |
| // Expect the time to be in a sensible range, e.g. > 2012-01-01. |
| EXPECT_GT(time, 1325376000u); |
| } |
| |
| TEST(LogTest, CheckExtraErrorField) { |
| LogMessageForTesting log_msg("some/path/myfile.cc", 100, LS_WARNING, |
| ERRCTX_ERRNO, 0xD); |
| ASSERT_FALSE(log_msg.is_noop()); |
| log_msg.stream() << "This gets added at dtor time"; |
| |
| const std::string& extra = log_msg.get_extra(); |
| const size_t length_to_check = arraysize("[0x12345678]") - 1; |
| ASSERT_GE(extra.length(), length_to_check); |
| EXPECT_EQ(std::string("[0x0000000D]"), extra.substr(0, length_to_check)); |
| } |
| |
| TEST(LogTest, CheckFilePathParsed) { |
| LogMessageForTesting log_msg("some/path/myfile.cc", 100, LS_INFO); |
| ASSERT_FALSE(log_msg.is_noop()); |
| log_msg.stream() << "<- Does this look right?"; |
| |
| const std::string stream = log_msg.GetPrintStream(); |
| #if defined(WEBRTC_ANDROID) |
| const char* tag = log_msg.get_tag(); |
| EXPECT_NE(nullptr, strstr(tag, "myfile.cc")); |
| EXPECT_NE(std::string::npos, stream.find("100")); |
| #else |
| EXPECT_NE(std::string::npos, stream.find("(myfile.cc:100)")); |
| #endif |
| } |
| |
| TEST(LogTest, CheckNoopLogEntry) { |
| if (LogMessage::GetLogToDebug() <= LS_SENSITIVE) { |
| printf("CheckNoopLogEntry: skipping. Global severity is being overridden."); |
| return; |
| } |
| |
| // Logging at LS_SENSITIVE severity, is by default turned off, so this should |
| // be treated as a noop message. |
| LogMessageForTesting log_msg("some/path/myfile.cc", 100, LS_SENSITIVE); |
| log_msg.stream() << "Should be logged to nowhere."; |
| EXPECT_TRUE(log_msg.is_noop()); |
| const std::string stream = log_msg.GetPrintStream(); |
| EXPECT_TRUE(stream.empty()); |
| } |
| |
| // Test the time required to write 1000 80-character logs to a string. |
| TEST(LogTest, Perf) { |
| std::string str; |
| LogSinkImpl<StringStream> stream(&str); |
| LogMessage::AddLogToStream(&stream, LS_SENSITIVE); |
| |
| const std::string message(80, 'X'); |
| { |
| // Just to be sure that we're not measuring the performance of logging |
| // noop log messages. |
| LogMessageForTesting sanity_check_msg(__FILE__, __LINE__, LS_SENSITIVE); |
| ASSERT_FALSE(sanity_check_msg.is_noop()); |
| } |
| |
| // We now know how many bytes the logging framework will tag onto every msg. |
| const size_t logging_overhead = str.size(); |
| // Reset the stream to 0 size. |
| str.clear(); |
| str.reserve(120000); |
| static const int kRepetitions = 1000; |
| |
| int64_t start = TimeMillis(), finish; |
| for (int i = 0; i < kRepetitions; ++i) { |
| LogMessageForTesting(__FILE__, __LINE__, LS_SENSITIVE).stream() << message; |
| } |
| finish = TimeMillis(); |
| |
| LogMessage::RemoveLogToStream(&stream); |
| stream.Close(); |
| |
| EXPECT_EQ(str.size(), (message.size() + logging_overhead) * kRepetitions); |
| RTC_LOG(LS_INFO) << "Total log time: " << TimeDiff(finish, start) << " ms " |
| << " total bytes logged: " << str.size(); |
| } |
| |
| } // namespace rtc |