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global.c
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global.c
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/*
* global.c
*
* Description:
* This translation unit instantiates data associated with the implementation
* as a whole.
*
* --------------------------------------------------------------------------
*
* Pthreads-win32 - POSIX Threads Library for Win32
* Copyright(C) 1998 John E. Bossom
* Copyright(C) 1999,2005 Pthreads-win32 contributors
*
* Contact Email: rpj@callisto.canberra.edu.au
*
* The current list of contributors is contained
* in the file CONTRIBUTORS included with the source
* code distribution. The list can also be seen at the
* following World Wide Web location:
* http://sources.redhat.com/pthreads-win32/contributors.html
*
* 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 2 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 library in the file COPYING.LIB;
* if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include "pthread.h"
#include "implement.h"
int ptw32_processInitialized = PTW32_FALSE;
ptw32_thread_t * ptw32_threadReuseTop = PTW32_THREAD_REUSE_EMPTY;
ptw32_thread_t * ptw32_threadReuseBottom = PTW32_THREAD_REUSE_EMPTY;
pthread_key_t ptw32_selfThreadKey = NULL;
pthread_key_t ptw32_cleanupKey = NULL;
pthread_cond_t ptw32_cond_list_head = NULL;
pthread_cond_t ptw32_cond_list_tail = NULL;
int ptw32_concurrency = 0;
/* What features have been auto-detected */
int ptw32_features = 0;
/*
* Global [process wide] thread sequence Number
*/
unsigned __int64 ptw32_threadSeqNumber = 0;
/*
* Function pointer to QueueUserAPCEx if it exists, otherwise
* it will be set at runtime to a substitute routine which cannot unblock
* blocked threads.
*/
DWORD (*ptw32_register_cancelation) (PAPCFUNC, HANDLE, DWORD) = NULL;
/*
* Global lock for managing pthread_t struct reuse.
*/
ptw32_mcs_lock_t ptw32_thread_reuse_lock = 0;
/*
* Global lock for testing internal state of statically declared mutexes.
*/
ptw32_mcs_lock_t ptw32_mutex_test_init_lock = 0;
/*
* Global lock for testing internal state of PTHREAD_COND_INITIALIZER
* created condition variables.
*/
ptw32_mcs_lock_t ptw32_cond_test_init_lock = 0;
/*
* Global lock for testing internal state of PTHREAD_RWLOCK_INITIALIZER
* created read/write locks.
*/
ptw32_mcs_lock_t ptw32_rwlock_test_init_lock = 0;
/*
* Global lock for testing internal state of PTHREAD_SPINLOCK_INITIALIZER
* created spin locks.
*/
ptw32_mcs_lock_t ptw32_spinlock_test_init_lock = 0;
/*
* Global lock for condition variable linked list. The list exists
* to wake up CVs when a WM_TIMECHANGE message arrives. See
* w32_TimeChangeHandler.c.
*/
ptw32_mcs_lock_t ptw32_cond_list_lock = 0;
#if defined(_UWIN)
/*
* Keep a count of the number of threads.
*/
int pthread_count = 0;
#endif