native_client_sdk/src/libraries/third_party/pthreads-win32/global.c

   1 /*
   2  * global.c
   3  *
   4  * Description:
   5  * This translation unit instantiates data associated with the implementation
   6  * as a whole.
   7  *
   8  * --------------------------------------------------------------------------
   9  *
  10  *      Pthreads-win32 - POSIX Threads Library for Win32
  11  *      Copyright(C) 1998 John E. Bossom
  12  *      Copyright(C) 1999,2005 Pthreads-win32 contributors
  13  *
  14  *      Contact Email: rpj@callisto.canberra.edu.au
  15  *
  16  *      The current list of contributors is contained
  17  *      in the file CONTRIBUTORS included with the source
  18  *      code distribution. The list can also be seen at the
  19  *      following World Wide Web location:
  20  *      http://sources.redhat.com/pthreads-win32/contributors.html
  21  *
  22  *      This library is free software; you can redistribute it and/or
  23  *      modify it under the terms of the GNU Lesser General Public
  24  *      License as published by the Free Software Foundation; either
  25  *      version 2 of the License, or (at your option) any later version.
  26  *
  27  *      This library is distributed in the hope that it will be useful,
  28  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  29  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  30  *      Lesser General Public License for more details.
  31  *
  32  *      You should have received a copy of the GNU Lesser General Public
  33  *      License along with this library in the file COPYING.LIB;
  34  *      if not, write to the Free Software Foundation, Inc.,
  35  *      59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  36  */
  37
  38 #include "pthread.h"
  39 #include "implement.h"
  40
  41
  42 int ptw32_processInitialized = PTW32_FALSE;
  43 ptw32_thread_t * ptw32_threadReuseTop = PTW32_THREAD_REUSE_EMPTY;
  44 ptw32_thread_t * ptw32_threadReuseBottom = PTW32_THREAD_REUSE_EMPTY;
  45 pthread_key_t ptw32_selfThreadKey = NULL;
  46 pthread_key_t ptw32_cleanupKey = NULL;
  47 pthread_cond_t ptw32_cond_list_head = NULL;
  48 pthread_cond_t ptw32_cond_list_tail = NULL;
  49
  50 int ptw32_concurrency = 0;
  51
  52 /* What features have been auto-detected */
  53 int ptw32_features = 0;
  54
  55 /*
  56  * Global [process wide] thread sequence Number
  57  */
  58 unsigned __int64 ptw32_threadSeqNumber = 0;
  59
  60 /*
  61  * Function pointer to QueueUserAPCEx if it exists, otherwise
  62  * it will be set at runtime to a substitute routine which cannot unblock
  63  * blocked threads.
  64  */
  65 DWORD (*ptw32_register_cancelation) (PAPCFUNC, HANDLE, DWORD) = NULL;
  66
  67 /*
  68  * Global lock for managing pthread_t struct reuse.
  69  */
  70 ptw32_mcs_lock_t ptw32_thread_reuse_lock = 0;
  71
  72 /*
  73  * Global lock for testing internal state of statically declared mutexes.
  74  */
  75 ptw32_mcs_lock_t ptw32_mutex_test_init_lock = 0;
  76
  77 /*
  78  * Global lock for testing internal state of PTHREAD_COND_INITIALIZER
  79  * created condition variables.
  80  */
  81 ptw32_mcs_lock_t ptw32_cond_test_init_lock = 0;
  82
  83 /*
  84  * Global lock for testing internal state of PTHREAD_RWLOCK_INITIALIZER
  85  * created read/write locks.
  86  */
  87 ptw32_mcs_lock_t ptw32_rwlock_test_init_lock = 0;
  88
  89 /*
  90  * Global lock for testing internal state of PTHREAD_SPINLOCK_INITIALIZER
  91  * created spin locks.
  92  */
  93 ptw32_mcs_lock_t ptw32_spinlock_test_init_lock = 0;
  94
  95 /*
  96  * Global lock for condition variable linked list. The list exists
  97  * to wake up CVs when a WM_TIMECHANGE message arrives. See
  98  * w32_TimeChangeHandler.c.
  99  */
 100 ptw32_mcs_lock_t ptw32_cond_list_lock = 0;
 101
 102 #if defined(_UWIN)
 103 /*
 104  * Keep a count of the number of threads.
 105  */
 106 int pthread_count = 0;
 107 #endif