src/library/stateobject.cpp

   1 #include "stateobject.hpp"
   2 #include "threads.hpp"
   3 #include <map>
   4
   5 namespace stateobject
   6 {
   7 threads::lock* lock;
   8 std::map<void*, void*>* states;
   9
  10 void* _get(void* obj, void* (*create)())
  11 {
  12         if(!lock) lock = new threads::lock;
  13         threads::alock h(*lock);
  14         if(!states) states = new std::map<void*, void*>;
  15         if(!states->count(obj)) {
  16                 (*states)[obj] = NULL;
  17                 try {
  18                         (*states)[obj] = create();
  19                 } catch(...) {
  20                         states->erase(obj);
  21                         throw;
  22                 }
  23         }
  24         return (*states)[obj];
  25 }
  26
  27 void* _get_soft(void* obj)
  28 {
  29         if(!lock) return NULL;
  30         threads::alock h(*lock);
  31         if(!states) return NULL;
  32         if(states->count(obj))
  33                 return (*states)[obj];
  34         return NULL;
  35 }
  36
  37 void _clear(void* obj, void (*destroy)(void* obj))
  38 {
  39         if(!lock) return;
  40         threads::alock h(*lock);
  41         if(!states) return;
  42         if(!states->count(obj)) return;
  43         destroy((*states)[obj]);
  44         states->erase(obj);
  45 }
  46
  47 }