// Copyright 2022 The Abseil Authors. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // https://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. // // ----------------------------------------------------------------------------- // File: log/internal/globals.h // ----------------------------------------------------------------------------- // // This header file contains various global objects and static helper routines // use in logging implementation.
// IsInitialized returns true if the logging library is initialized. // This function is async-signal-safe bool IsInitialized();
// SetLoggingInitialized is called once after logging initialization is done. void SetInitialized();
// Unconditionally write a `message` to stderr. If `severity` exceeds kInfo // we also flush the stderr stream. void WriteToStderr(absl::string_view message, absl::LogSeverity severity);
// Set the TimeZone used for human-friendly times (for example, the log message // prefix) printed by the logging library. This may only be called once. void SetTimeZone(absl::TimeZone tz);
// Returns the TimeZone used for human-friendly times (for example, the log // message prefix) printed by the logging library Returns nullptr prior to // initialization. const absl::TimeZone* TimeZone();
// Returns true if stack traces emitted by the logging library should be // symbolized. This function is async-signal-safe. bool ShouldSymbolizeLogStackTrace();
// Enables or disables symbolization of stack traces emitted by the // logging library. This function is async-signal-safe. void EnableSymbolizeLogStackTrace(bool on_off);
// Returns the maximum number of frames that appear in stack traces // emitted by the logging library. This function is async-signal-safe. int MaxFramesInLogStackTrace();
// Sets the maximum number of frames that appear in stack traces emitted by // the logging library. This function is async-signal-safe. void SetMaxFramesInLogStackTrace(int max_num_frames);
// Determines whether we exit the program for a LOG(DFATAL) message in // debug mode. It does this by skipping the call to Fail/FailQuietly. // This is intended for testing only. // // This can have some effects on LOG(FATAL) as well. Failure messages // are always allocated (rather than sharing a buffer), the crash // reason is not recorded, the "gwq" status message is not updated, // and the stack trace is not recorded. The LOG(FATAL) *will* still // exit the program. Since this function is used only in testing, // these differences are acceptable. // // Additionally, LOG(LEVEL(FATAL)) is indistinguishable from LOG(DFATAL) and // will not terminate the program if SetExitOnDFatal(false) has been called. bool ExitOnDFatal();
// SetExitOnDFatal() sets the ExitOnDFatal() status void SetExitOnDFatal(bool on_off);
// Determines if the logging library should suppress logging of stacktraces in // the `SIGABRT` handler, typically because we just logged a stacktrace as part // of `LOG(FATAL)` and are about to send ourselves a `SIGABRT` to end the // program. bool SuppressSigabortTrace();
// Sets the SuppressSigabortTrace() status and returns the previous state. bool SetSuppressSigabortTrace(bool on_off);
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