PoolMember.cc

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#include "PoolMember.h"
#include "PoolImpl.h"
 
namespace zypp::sat::detail {
 
  static bool & poolDestroyed() {
      static bool _flag = false;   // trivially destructible — never "destroyed"
      return _flag;
  }
 
  static PoolImpl & globalPool()
  {
    struct Guard {
        Guard() = default;
        Guard(const Guard &) = delete;
        Guard(Guard &&) = delete;
        Guard &operator=(const Guard &) = delete;
        Guard &operator=(Guard &&) = delete;
        ~Guard() { poolDestroyed() = true; }
    };
 
    static PoolImpl _global;
    static Guard _guard;
    return _global;
  }
 

  //
  //    METHOD NAME : PoolMember::myPool
  //    METHOD TYPE : PoolImpl
  //
  PoolImpl & PoolMember::myPool()
  {
    if ( poolDestroyed () )
      ZYPP_THROW( zypp::Exception("Global PoolImpl instance used after it was destroyed!") );
    return globalPool ();
  }
 
  bool PoolMember::poolValid()
  {
    return !poolDestroyed ();
  }
}