source/core/mt/Guard.cpp

   1 // ANNA - Anna is Not Nothingness Anymore                                                         //
   2 //                                                                                                //
   3 // (c) Copyright 2005-2015 Eduardo Ramos Testillano & Francisco Ruiz Rayo                         //
   4 //                                                                                                //
   5 // See project site at http://redmine.teslayout.com/projects/anna-suite                           //
   6 // See accompanying file LICENSE or copy at http://www.teslayout.com/projects/public/anna.LICENSE //
   7
   8
   9 #include <anna/core/mt/Guard.hpp>
  10 #include <anna/core/mt/Safe.hpp>
  11 #include <anna/core/functions.hpp>
  12 #include <anna/core/tracing/Logger.hpp>
  13
  14 using namespace std;
  15 using namespace anna;
  16
  17 #define trace_local7(method,object,file,line) \
  18    if (Logger::isActive (Logger::Local7)) { \
  19       string msg = (method); \
  20       msg += " | Reference: "; \
  21       if (a_whatis == NULL)  \
  22          msg += functions::asHexString (anna_ptrnumber_cast ((object))); \
  23       else { \
  24          msg += "("; \
  25          msg += functions::asHexString (anna_ptrnumber_cast ((object))); \
  26          msg += "): "; \
  27          msg += a_whatis; \
  28       } \
  29       Logger::write (Logger::Local7, msg, (file), (line)); \
  30    }
  31
  32 Guard::Guard(const Safe* object) noexcept(false) :
  33   a_whatis(NULL) {
  34   if(object == NULL)
  35     throw RuntimeException("Can not lock NULL object", ANNA_FILE_LOCATION);
  36
  37   lock(a_safeObject = const_cast <Safe*>(object), NULL);
  38 }
  39
  40 Guard::Guard(const Safe* object, const char* whatis) noexcept(false) :
  41   a_whatis(whatis) {
  42   if(object == NULL)
  43     throw RuntimeException("Can not lock NULL object", ANNA_FILE_LOCATION);
  44
  45   lock(a_safeObject = const_cast <Safe*>(object), whatis);
  46 }
  47
  48 void Guard::deactivate()
  49 {
  50   if(a_safeObject == NULL)
  51     return;
  52
  53   a_safeObject->unlock();
  54   trace_local7("Guard::deactivate", a_safeObject, __FILE__, __LINE__);
  55   a_safeObject = NULL;
  56 }
  57
  58 //--------------------------------------------------------------------------------------------------------------
  59 // Solo sacmos trazas cuando nos mandan un 'whatis', de otro quedamos un bucle infinito porque el
  60 // Logger::writer tambien usa una Guard.
  61 //--------------------------------------------------------------------------------------------------------------
  62 void Guard::lock(Safe* safe, const char* whatis)
  63 noexcept(false) {
  64   trace_local7("Guard::lock", safe, __FILE__, __LINE__);
  65   safe->lock();
  66 }
  67