media/mtransport/logging.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 // Original author: ekr@rtfm.com
   8
   9 #ifndef logging_h__
  10 #define logging_h__
  11
  12 #if defined(PR_LOG)
  13 #error "Must #include logging.h before any IPDL-generated files or other files that #include prlog.h."
  14 #endif
  15
  16 // Enforce logging under production builds for MOZ_MTLOG friends.
  17 #ifndef PR_LOGGING
  18 #define FORCE_PR_LOG 1
  19 #endif
  20
  21 #include <sstream>
  22 #include <prlog.h>
  23
  24 #if defined(PR_LOGGING)
  25
  26 #define ML_EMERG            1
  27 #define ML_ERROR            2
  28 #define ML_WARNING          3
  29 #define ML_NOTICE           4
  30 #define ML_INFO             5
  31 #define ML_DEBUG            6
  32
  33 // PR_LOGGING is on --> make useful MTLOG macros
  34 #define MOZ_MTLOG_MODULE(n) \
  35   static PRLogModuleInfo* getLogModule() {      \
  36     static PRLogModuleInfo* log;                \
  37     if (!log)                                   \
  38       log = PR_NewLogModule(n);                 \
  39     return log;                                 \
  40   }
  41
  42 #define MOZ_MTLOG(level, b) \
  43   do {                                                                  \
  44     std::stringstream str;                                              \
  45     str << b;                                                           \
  46     PR_LOG(getLogModule(), level, ("%s", str.str().c_str())); } while(0)
  47
  48 #else
  49 // PR_LOGGING is off --> make no-op MTLOG macros
  50 #define MOZ_MTLOG_MODULE(n)
  51 #define MOZ_MTLOG(level, b)
  52
  53 #endif // defined(PR_LOGGING)
  54
  55 #endif // logging_h__