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

   1 /*
   2  * pthread_exit.c
   3  *
   4  * Description:
   5  * This translation unit implements routines associated with exiting from
   6  * a thread.
   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 #if !defined(_UWIN)
  41 /*#   include <process.h> */
  42 #endif
  43
  44 void
  45 pthread_exit (void *value_ptr)
  46      /*
  47       * ------------------------------------------------------
  48       * DOCPUBLIC
  49       *      This function terminates the calling thread, returning
  50       *      the value 'value_ptr' to any joining thread.
  51       *
  52       * PARAMETERS
  53       *      value_ptr
  54       *              a generic data value (i.e. not the address of a value)
  55       *
  56       *
  57       * DESCRIPTION
  58       *      This function terminates the calling thread, returning
  59       *      the value 'value_ptr' to any joining thread.
  60       *      NOTE: thread should be joinable.
  61       *
  62       * RESULTS
  63       *              N/A
  64       *
  65       * ------------------------------------------------------
  66       */
  67 {
  68   ptw32_thread_t * sp;
  69
  70   /*
  71    * Don't use pthread_self() to avoid creating an implicit POSIX thread handle
  72    * unnecessarily.
  73    */
  74   sp = (ptw32_thread_t *) pthread_getspecific (ptw32_selfThreadKey);
  75
  76 #if defined(_UWIN)
  77   if (--pthread_count <= 0)
  78     exit ((int) value_ptr);
  79 #endif
  80
  81   if (NULL == sp)
  82     {
  83       /*
  84        * A POSIX thread handle was never created. I.e. this is a
  85        * Win32 thread that has never called a pthreads-win32 routine that
  86        * required a POSIX handle.
  87        *
  88        * Implicit POSIX handles are cleaned up in ptw32_throw() now.
  89        */
  90
  91 #if ! (defined (__MINGW64__) || defined(__MINGW32__)) || defined (__MSVCRT__)  || defined (__DMC__)
  92       _endthreadex ((unsigned) (size_t) value_ptr);
  93 #else
  94       _endthread ();
  95 #endif
  96
  97       /* Never reached */
  98     }
  99
 100   sp->exitStatus = value_ptr;
 101
 102   ptw32_throw (PTW32_EPS_EXIT);
 103
 104   /* Never reached. */
 105
 106 }