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-rw-r--r--mojo/public/c/environment/logger.h61
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diff --git a/mojo/public/c/environment/logger.h b/mojo/public/c/environment/logger.h
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--- a/mojo/public/c/environment/logger.h
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-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef MOJO_PUBLIC_C_ENVIRONMENT_LOGGER_H_
-#define MOJO_PUBLIC_C_ENVIRONMENT_LOGGER_H_
-
-#include <stdint.h>
-
-// |MojoLogLevel|: Used to specify the type of log message. Values are ordered
-// by severity (i.e., higher numerical values are more severe).
-
-typedef int32_t MojoLogLevel;
-
-#ifdef __cplusplus
-const MojoLogLevel MOJO_LOG_LEVEL_VERBOSE = -1;
-const MojoLogLevel MOJO_LOG_LEVEL_INFO = 0;
-const MojoLogLevel MOJO_LOG_LEVEL_WARNING = 1;
-const MojoLogLevel MOJO_LOG_LEVEL_ERROR = 2;
-const MojoLogLevel MOJO_LOG_LEVEL_FATAL = 3;
-#else
-#define MOJO_LOG_LEVEL_VERBOSE ((MojoLogLevel) - 1)
-#define MOJO_LOG_LEVEL_INFO ((MojoLogLevel)0)
-#define MOJO_LOG_LEVEL_WARNING ((MojoLogLevel)1)
-#define MOJO_LOG_LEVEL_ERROR ((MojoLogLevel)2)
-#define MOJO_LOG_LEVEL_FATAL ((MojoLogLevel)3)
-#endif
-
-// Structure with basic logging functions (on top of which more friendly logging
-// macros may be built). The functions are thread-safe, except for
-// |SetMinimumLogLevel()| (see below).
-struct MojoLogger {
- // Logs |message| (which must not be null) at level |log_level| if |log_level|
- // is at least the current minimum log level. If |log_level| is
- // |MOJO_LOG_LEVEL_FATAL| (or greater), aborts the application/process.
- // |source_file| and |source_line| indicate the source file and (1-based) line
- // number, respectively; they are optional: |source_file| may be null and
- // |source_line| may be zero (if |source_file| is null, then |source_line| may
- // be ignored).
- void (*LogMessage)(MojoLogLevel log_level,
- const char* source_file,
- uint32_t source_line,
- const char* message);
-
- // Gets the minimum log level (see above), which will always be at most
- // |MOJO_LOG_LEVEL_FATAL|. (Though |LogMessage()| will automatically avoid
- // logging messages below the minimum log level, this may be used to avoid
- // extra work.)
- MojoLogLevel (*GetMinimumLogLevel)(void);
-
- // Sets the minimum log level (see above) to the lesser of |minimum_log_level|
- // and |MOJO_LOG_LEVEL_FATAL|.
- //
- // Warning: This function may not be thread-safe, and should not be called
- // concurrently with other |MojoLogger| functions. (In some environments --
- // such as Chromium -- that share a logger across applications, this may mean
- // that it is almost never safe to call this.)
- void (*SetMinimumLogLevel)(MojoLogLevel minimum_log_level);
-};
-
-#endif // MOJO_PUBLIC_C_ENVIRONMENT_LOGGER_H_