am 45288223: Merge "libbase: logging fixes" (e1c3a7c1) · Commits · e / os / android_system_core

base/logging.cpp

+43 −19

Original line number	Diff line number	Diff line
		@@ -70,9 +70,14 @@ const char* getprogname() {
		static char progname[MAX_PATH] = {};

		if (first) {
		// TODO(danalbert): This is a full path on Windows. Just get the basename.
		DWORD nchars = GetModuleFileName(nullptr, progname, sizeof(progname));
		DCHECK_GT(nchars, 0U);
		CHAR longname[MAX_PATH];
		DWORD nchars = GetModuleFileNameA(nullptr, longname, arraysize(longname));
		if ((nchars >= arraysize(longname)) \|\| (nchars == 0)) {
		// String truncation or some other error.
		strcpy(progname, "<unknown>");
		} else {
		strcpy(progname, basename(longname));
		}
		first = false;
		}

		@@ -82,25 +87,22 @@ const char* getprogname() {
		class mutex {
		public:
		mutex() {
		semaphore_ = CreateSemaphore(nullptr, 1, 1, nullptr);
		CHECK(semaphore_ != nullptr) << "Failed to create Mutex";
		InitializeCriticalSection(&critical_section_);
		}
		~mutex() {
		CloseHandle(semaphore_);
		DeleteCriticalSection(&critical_section_);
		}

		void lock() {
		DWORD result = WaitForSingleObject(semaphore_, INFINITE);
		CHECK_EQ(result, WAIT_OBJECT_0) << GetLastError();
		EnterCriticalSection(&critical_section_);
		}

		void unlock() {
		bool result = ReleaseSemaphore(semaphore_, 1, nullptr);
		CHECK(result);
		LeaveCriticalSection(&critical_section_);
		}

		private:
		HANDLE semaphore_;
		CRITICAL_SECTION critical_section_;
		};

		template <typename LockT>
		@@ -147,8 +149,9 @@ static const char* ProgramInvocationName() {

		void StderrLogger(LogId, LogSeverity severity, const char, const char file,
		unsigned int line, const char* message) {
		static const char* log_characters = "VDIWEF";
		CHECK_EQ(strlen(log_characters), FATAL + 1U);
		static const char log_characters[] = "VDIWEF";
		static_assert(arraysize(log_characters) - 1 == FATAL + 1,
		"Mismatch in size of log_characters and values in LogSeverity");
		char severity_char = log_characters[severity];
		fprintf(stderr, "%s %c %5d %5d %s:%u] %s\n", ProgramInvocationName(),
		severity_char, getpid(), gettid(), file, line, message);
		@@ -197,6 +200,20 @@ void InitLogging(char* argv[], LogFunction&& logger) {
		InitLogging(argv);
		}

		// TODO: make this public; it's independently useful.
		class ErrnoRestorer {
		public:
		ErrnoRestorer(int saved_errno) : saved_errno_(saved_errno) {
		}

		~ErrnoRestorer() {
		errno = saved_errno_;
		}

		private:
		const int saved_errno_;
		};

		void InitLogging(char* argv[]) {
		if (gInitialized) {
		return;
		@@ -257,19 +274,25 @@ void SetLogger(LogFunction&& logger) {
		gLogger = std::move(logger);
		}

		// We can't use basename(3) because this code runs on the Mac, which doesn't
		// have a non-modifying basename.
		static const char* GetFileBasename(const char* file) {
		const char* last_slash = strrchr(file, '/');
		return (last_slash == nullptr) ? file : last_slash + 1;
		}

		// This indirection greatly reduces the stack impact of having lots of
		// checks/logging in a function.
		class LogMessageData {
		public:
		LogMessageData(const char* file, unsigned int line, LogId id,
		LogSeverity severity, int error)
		: file_(file),
		LogSeverity severity, int error, int saved_errno)
		: file_(GetFileBasename(file)),
		line_number_(line),
		id_(id),
		severity_(severity),
		error_(error) {
		const char* last_slash = strrchr(file, '/');
		file = (last_slash == nullptr) ? file : last_slash + 1;
		error_(error),
		errno_restorer_(saved_errno) {
		}

		const char* GetFile() const {
		@@ -307,13 +330,14 @@ class LogMessageData {
		const LogId id_;
		const LogSeverity severity_;
		const int error_;
		ErrnoRestorer errno_restorer_;

		DISALLOW_COPY_AND_ASSIGN(LogMessageData);
		};

		LogMessage::LogMessage(const char* file, unsigned int line, LogId id,
		LogSeverity severity, int error)
		: data_(new LogMessageData(file, line, id, severity, error)) {
		: data_(new LogMessageData(file, line, id, severity, error, errno)) {
		}

		LogMessage::~LogMessage() {

base/logging_test.cpp

+8 −8

Original line number	Diff line number	Diff line
		@@ -76,10 +76,10 @@ std::string make_log_pattern(android::base::LogSeverity severity,
		const char* message) {
		static const char* log_characters = "VDIWEF";
		char log_char = log_characters[severity];
		std::string holder(__FILE__);
		return android::base::StringPrintf(
		"%c[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+ " __FILE__
		":[[:digit:]]+] %s",
		log_char, message);
		"%c[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+ %s:[[:digit:]]+] %s",
		log_char, basename(&holder[0]), message);
		}

		TEST(logging, LOG) {
		@@ -100,7 +100,7 @@ TEST(logging, LOG) {
		#if !defined(_WIN32)
		std::regex message_regex(
		make_log_pattern(android::base::WARNING, "foobar"));
		ASSERT_TRUE(std::regex_search(output, message_regex));
		ASSERT_TRUE(std::regex_search(output, message_regex)) << output;
		#endif
		}

		@@ -116,7 +116,7 @@ TEST(logging, LOG) {
		#if !defined(_WIN32)
		std::regex message_regex(
		make_log_pattern(android::base::INFO, "foobar"));
		ASSERT_TRUE(std::regex_search(output, message_regex));
		ASSERT_TRUE(std::regex_search(output, message_regex)) << output;
		#endif
		}

		@@ -143,7 +143,7 @@ TEST(logging, LOG) {
		#if !defined(_WIN32)
		std::regex message_regex(
		make_log_pattern(android::base::DEBUG, "foobar"));
		ASSERT_TRUE(std::regex_search(output, message_regex));
		ASSERT_TRUE(std::regex_search(output, message_regex)) << output;
		#endif
		}
		}
		@@ -162,7 +162,7 @@ TEST(logging, PLOG) {
		#if !defined(_WIN32)
		std::regex message_regex(make_log_pattern(
		android::base::INFO, "foobar: No such file or directory"));
		ASSERT_TRUE(std::regex_search(output, message_regex));
		ASSERT_TRUE(std::regex_search(output, message_regex)) << output;
		#endif
		}
		}
		@@ -183,7 +183,7 @@ TEST(logging, UNIMPLEMENTED) {
		android::base::StringPrintf("%s unimplemented ", __PRETTY_FUNCTION__);
		std::regex message_regex(
		make_log_pattern(android::base::ERROR, expected_message.c_str()));
		ASSERT_TRUE(std::regex_search(output, message_regex));
		ASSERT_TRUE(std::regex_search(output, message_regex)) << output;
		#endif
		}
		}