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/********************************************************************************
* *
* T h r e a d - L o c a l S t o r a g e C l a s s *
* *
*********************************************************************************
* Copyright (C) 2004,2022 by Jeroen van der Zijp. All Rights Reserved. *
*********************************************************************************
* This library is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Lesser General Public License as published by *
* the Free Software Foundation; either version 3 of the License, or *
* (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/> *
********************************************************************************/
#include "xincs.h"
#include "fxver.h"
#include "fxdefs.h"
#include "fxmath.h"
#include "FXException.h"
#include "FXAutoThreadStorageKey.h"
/*
Notes:
- Automatically generate thread-local storage keys in a global constructor;
clean them up automatically as well using a global destructor.
*/
using namespace FX;
/*******************************************************************************/
namespace FX {
// Automatically acquire a thread-local storage key
FXAutoThreadStorageKey::FXAutoThreadStorageKey(){
#if defined(WIN32)
FXASSERT_STATIC(sizeof(FXThreadStorageKey)>=sizeof(DWORD));
if((value=(FXThreadStorageKey)TlsAlloc())==TLS_OUT_OF_INDEXES){ throw FXMemoryException("FXAutoThreadStorageKey::FXAutoThreadStorageKey: out of memory\n"); }
#else
FXASSERT_STATIC(sizeof(FXThreadStorageKey)>=sizeof(pthread_key_t));
pthread_key_t key;
if(pthread_key_create(&key,nullptr)!=0){ throw FXMemoryException("FXAutoThreadStorageKey::FXAutoThreadStorageKey: out of memory\n"); }
value=(FXThreadStorageKey)key;
#endif
}
// Set thread local storage associated with this key
void FXAutoThreadStorageKey::set(FXptr ptr) const {
#if defined(WIN32)
TlsSetValue((DWORD)value,ptr);
#else
pthread_setspecific((pthread_key_t)value,ptr);
#endif
}
// Get thread local storage associated with this key
FXptr FXAutoThreadStorageKey::get() const {
#if defined(WIN32)
return TlsGetValue((DWORD)value);
#else
return pthread_getspecific((pthread_key_t)value);
#endif
}
// Automatically release a thread-local storage key
FXAutoThreadStorageKey::~FXAutoThreadStorageKey(){
#if defined(WIN32)
TlsFree((DWORD)value);
#else
pthread_key_delete((pthread_key_t)value);
#endif
}
}
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