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/thirdparty/breakpad/third_party/glog/src/windows/glog/raw_logging.h

http://github.com/tomahawk-player/tomahawk
C++ Header | 189 lines | 97 code | 23 blank | 69 comment | 13 complexity | 25b148d302f949811f57669aaca61d36 MD5 | raw file
  1// This file is automatically generated from src/glog/raw_logging.h.in
  2// using src/windows/preprocess.sh.
  3// DO NOT EDIT!
  4
  5// Copyright (c) 2006, Google Inc.
  6// All rights reserved.
  7//
  8// Redistribution and use in source and binary forms, with or without
  9// modification, are permitted provided that the following conditions are
 10// met:
 11//
 12//     * Redistributions of source code must retain the above copyright
 13// notice, this list of conditions and the following disclaimer.
 14//     * Redistributions in binary form must reproduce the above
 15// copyright notice, this list of conditions and the following disclaimer
 16// in the documentation and/or other materials provided with the
 17// distribution.
 18//     * Neither the name of Google Inc. nor the names of its
 19// contributors may be used to endorse or promote products derived from
 20// this software without specific prior written permission.
 21//
 22// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 23// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 24// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 25// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 26// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 27// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 28// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 29// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 30// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 31// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 32// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 33//
 34// Author: Maxim Lifantsev
 35//
 36// Thread-safe logging routines that do not allocate any memory or
 37// acquire any locks, and can therefore be used by low-level memory
 38// allocation and synchronization code.
 39
 40#ifndef BASE_RAW_LOGGING_H_
 41#define BASE_RAW_LOGGING_H_
 42
 43#include <time.h>
 44
 45namespace google {
 46
 47#include "glog/log_severity.h"
 48#include "glog/vlog_is_on.h"
 49
 50// Annoying stuff for windows -- makes sure clients can import these functions
 51#ifndef GOOGLE_GLOG_DLL_DECL
 52# if defined(_WIN32) && !defined(__CYGWIN__)
 53#   define GOOGLE_GLOG_DLL_DECL  __declspec(dllimport)
 54# else
 55#   define GOOGLE_GLOG_DLL_DECL
 56# endif
 57#endif
 58
 59// This is similar to LOG(severity) << format... and VLOG(level) << format..,
 60// but
 61// * it is to be used ONLY by low-level modules that can't use normal LOG()
 62// * it is desiged to be a low-level logger that does not allocate any
 63//   memory and does not need any locks, hence:
 64// * it logs straight and ONLY to STDERR w/o buffering
 65// * it uses an explicit format and arguments list
 66// * it will silently chop off really long message strings
 67// Usage example:
 68//   RAW_LOG(ERROR, "Failed foo with %i: %s", status, error);
 69//   RAW_VLOG(3, "status is %i", status);
 70// These will print an almost standard log lines like this to stderr only:
 71//   E0821 211317 file.cc:123] RAW: Failed foo with 22: bad_file
 72//   I0821 211317 file.cc:142] RAW: status is 20
 73#define RAW_LOG(severity, ...) \
 74  do { \
 75    switch (google::severity) {  \
 76      case 0: \
 77        RAW_LOG_INFO(__VA_ARGS__); \
 78        break; \
 79      case 1: \
 80        RAW_LOG_WARNING(__VA_ARGS__); \
 81        break; \
 82      case 2: \
 83        RAW_LOG_ERROR(__VA_ARGS__); \
 84        break; \
 85      case 3: \
 86        RAW_LOG_FATAL(__VA_ARGS__); \
 87        break; \
 88      default: \
 89        break; \
 90    } \
 91  } while (0)
 92
 93// The following STRIP_LOG testing is performed in the header file so that it's
 94// possible to completely compile out the logging code and the log messages.
 95#if STRIP_LOG == 0
 96#define RAW_VLOG(verboselevel, ...) \
 97  do { \
 98    if (VLOG_IS_ON(verboselevel)) { \
 99      RAW_LOG_INFO(__VA_ARGS__); \
100    } \
101  } while (0)
102#else
103#define RAW_VLOG(verboselevel, ...) RawLogStub__(0, __VA_ARGS__)
104#endif // STRIP_LOG == 0
105
106#if STRIP_LOG == 0
107#define RAW_LOG_INFO(...) google::RawLog__(google::INFO, \
108                                   __FILE__, __LINE__, __VA_ARGS__)
109#else
110#define RAW_LOG_INFO(...) google::RawLogStub__(0, __VA_ARGS__)
111#endif // STRIP_LOG == 0
112
113#if STRIP_LOG <= 1
114#define RAW_LOG_WARNING(...) google::RawLog__(google::WARNING,   \
115                                      __FILE__, __LINE__, __VA_ARGS__)
116#else
117#define RAW_LOG_WARNING(...) google::RawLogStub__(0, __VA_ARGS__)
118#endif // STRIP_LOG <= 1
119
120#if STRIP_LOG <= 2
121#define RAW_LOG_ERROR(...) google::RawLog__(google::ERROR,       \
122                                    __FILE__, __LINE__, __VA_ARGS__)
123#else
124#define RAW_LOG_ERROR(...) google::RawLogStub__(0, __VA_ARGS__)
125#endif // STRIP_LOG <= 2
126
127#if STRIP_LOG <= 3
128#define RAW_LOG_FATAL(...) google::RawLog__(google::FATAL,       \
129                                    __FILE__, __LINE__, __VA_ARGS__)
130#else
131#define RAW_LOG_FATAL(...) \
132  do { \
133    google::RawLogStub__(0, __VA_ARGS__);        \
134    exit(1); \
135  } while (0)
136#endif // STRIP_LOG <= 3
137
138// Similar to CHECK(condition) << message,
139// but for low-level modules: we use only RAW_LOG that does not allocate memory.
140// We do not want to provide args list here to encourage this usage:
141//   if (!cond)  RAW_LOG(FATAL, "foo ...", hard_to_compute_args);
142// so that the args are not computed when not needed.
143#define RAW_CHECK(condition, message)                                   \
144  do {                                                                  \
145    if (!(condition)) {                                                 \
146      RAW_LOG(FATAL, "Check %s failed: %s", #condition, message);       \
147    }                                                                   \
148  } while (0)
149
150// Debug versions of RAW_LOG and RAW_CHECK
151#ifndef NDEBUG
152
153#define RAW_DLOG(severity, ...) RAW_LOG(severity, __VA_ARGS__)
154#define RAW_DCHECK(condition, message) RAW_CHECK(condition, message)
155
156#else  // NDEBUG
157
158#define RAW_DLOG(severity, ...)                                 \
159  while (false)                                                 \
160    RAW_LOG(severity, __VA_ARGS__)
161#define RAW_DCHECK(condition, message) \
162  while (false) \
163    RAW_CHECK(condition, message)
164
165#endif  // NDEBUG
166
167// Stub log function used to work around for unused variable warnings when
168// building with STRIP_LOG > 0.
169static inline void RawLogStub__(int ignored, ...) {
170}
171
172// Helper function to implement RAW_LOG and RAW_VLOG
173// Logs format... at "severity" level, reporting it
174// as called from file:line.
175// This does not allocate memory or acquire locks.
176GOOGLE_GLOG_DLL_DECL void RawLog__(LogSeverity severity,
177                                   const char* file,
178                                   int line,
179                                   const char* format, ...)
180   ;
181
182// Hack to propagate time information into this module so that
183// this module does not have to directly call localtime_r(),
184// which could allocate memory.
185GOOGLE_GLOG_DLL_DECL void RawLog__SetLastTime(const struct tm& t, int usecs);
186
187}
188
189#endif  // BASE_RAW_LOGGING_H_