hphp/util/debug.h

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-present Facebook, Inc. (http://www.facebook.com)  |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15 */
  16
  17 #ifndef incl_HPHP_DEBUG_H_
  18 #define incl_HPHP_DEBUG_H_
  19
  20 #include <signal.h>
  21
  22 #ifdef DEBUG
  23
  24 /*
  25  * Conditionally drop into the debugger
  26  */
  27 #ifdef _MSC_VER
  28 #include <intrin.h>
  29 #define DEBUGGER() __debugbreak()
  30 #else
  31 #define DEBUGGER() kill(getpid(), SIGTRAP)
  32 #endif
  33
  34 /*
  35  * DEBUGGER_IF: use like always_assert(), i.e., do not rely on side effects
  36  * of pred, as it will be compiled out of debug builds.
  37  */
  38 #define DEBUGGER_IF(pred) do { \
  39   if ((pred)) {                \
  40     DEBUGGER();                \
  41   }                            \
  42 } while(0)
  43
  44 #else
  45 #define DEBUGGER()       do { } while(0)
  46 #define DEBUGGER_IF(...) do { } while(0)
  47 #endif /* DEBUG */
  48
  49 #endif /* incl_HPHP_DEBUG_H_ */