source/game/accessguard.cpp

   1 #include "accessguard.h"
   2
   3 namespace Msp::Game {
   4
   5 thread_local AccessGuard *AccessGuard::instance = nullptr;
   6
   7 AccessGuard::AccessGuard()
   8 {
   9         if(!instance)
  10                 instance = this;
  11 }
  12
  13 AccessGuard::AccessGuard(AccessGuard &&other):
  14         flags(std::move(other.flags))
  15 {
  16         if(&other==instance)
  17                 instance = this;
  18 }
  19
  20 AccessGuard &AccessGuard::operator=(AccessGuard &&other)
  21 {
  22         flags = std::move(other.flags);
  23         if(&other==instance)
  24                 instance = this;
  25         return *this;
  26 }
  27
  28 AccessGuard::~AccessGuard()
  29 {
  30         if(this==instance)
  31                 instance = nullptr;
  32 }
  33
  34 AccessGuard &AccessGuard::get_instance()
  35 {
  36         if(!instance)
  37                 throw std::logic_error("no AccessGuard instance");
  38         return *instance;
  39 }
  40
  41 void AccessGuard::block_all()
  42 {
  43         default_flag = BLOCKED;
  44         for(uint8_t &f: flags)
  45                 f = BLOCKED;
  46 }
  47
  48 void AccessGuard::unblock_all()
  49 {
  50         default_flag = UNBLOCKED;
  51         for(uint8_t &f: flags)
  52                 f = UNBLOCKED;
  53 }
  54
  55 unsigned AccessGuard::get_next_index()
  56 {
  57         static unsigned next_index = 0;
  58         return next_index++;
  59 }
  60
  61 } // namespace Msp::Game