native_client_sdk/src/libraries/nacl_io/log.h

   1 /* Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2  * Use of this source code is governed by a BSD-style license that can be
   3  * found in the LICENSE file. */
   4
   5 #ifndef LIBRARIES_NACL_IO_LOG_H_
   6 #define LIBRARIES_NACL_IO_LOG_H_
   7
   8 #include "sdk_util/macros.h"
   9
  10 #define LOG_PREFIX "nacl_io: "
  11
  12 #if defined(NDEBUG)
  13
  14 #define LOG_TRACE(format, ...)
  15 #define LOG_ERROR(format, ...)
  16 #define LOG_WARN(format, ...)
  17
  18 #else
  19
  20 #if NACL_IO_LOGGING
  21
  22 #define LOG_TRACE(format, ...) \
  23   nacl_io_log(LOG_PREFIX format "\n", ##__VA_ARGS__)
  24
  25 #else
  26
  27 #define LOG_TRACE(format, ...)
  28
  29 #endif
  30
  31 #define LOG_ERROR(format, ...)                         \
  32   nacl_io_log(LOG_PREFIX "%s:%d: error: " format "\n", \
  33               __FILE__,                                \
  34               __LINE__,                                \
  35               ##__VA_ARGS__)
  36
  37 #define LOG_WARN(format, ...)                            \
  38   nacl_io_log(LOG_PREFIX "%s:%d: warning: " format "\n", \
  39               __FILE__,                                  \
  40               __LINE__,                                  \
  41               ##__VA_ARGS__)
  42
  43 #endif
  44
  45 EXTERN_C_BEGIN
  46
  47 /*
  48  * Low level logging function for nacl_io log messages.
  49  *
  50  * This function sends its output directly to the IRT standard out
  51  * file descriptor, which by default will apear on the standard out
  52  * or chrome or sel_ldr.
  53  */
  54 void nacl_io_log(const char* format, ...) PRINTF_LIKE(1, 2);
  55
  56 EXTERN_C_END
  57
  58 #endif  /* LIBRARIES_NACL_IO_LOG_H_ */