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Viewing changes to win32/3rdparty/pthreads/pthread_setspecific.c

  • Committer: Bazaar Package Importer
  • Author(s): Scott Kitterman
  • Date: 2011-02-19 09:51:33 UTC
  • mfrom: (0.35.19 sid)
  • Revision ID: james.westby@ubuntu.com-20110219095133-sde2dyj8a6bjbkdh
Tags: 0.97+dfsg-0ubuntu1
* Merge from debian unstable (0ubuntu1 because the Debian upload was
  inadvertently left marked UNRELEASED).  Remaining changes:
  - Drop initial signature definitions from clamav-base
  - Drop build-dep on electric-fence (in Universe)
  - Add apparmor profiles for clamd and freshclam along with maintainer
    script changes

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win32/3rdparty/pthreads/pthread_setspecific.c
 
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/*
 
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 * pthread_setspecific.c
 
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 *
 
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 * Description:
 
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 * POSIX thread functions which implement thread-specific data (TSD).
 
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 *
 
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 * --------------------------------------------------------------------------
 
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 *
 
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 *      Pthreads-win32 - POSIX Threads Library for Win32
 
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 *      Copyright(C) 1998 John E. Bossom
 
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 *      Copyright(C) 1999,2005 Pthreads-win32 contributors
 
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 * 
 
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 *      Contact Email: rpj@callisto.canberra.edu.au
 
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 * 
 
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 *      The current list of contributors is contained
 
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 *      in the file CONTRIBUTORS included with the source
 
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 *      code distribution. The list can also be seen at the
 
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 *      following World Wide Web location:
 
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 *      http://sources.redhat.com/pthreads-win32/contributors.html
 
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 * 
 
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 *      This library is free software; you can redistribute it and/or
 
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 *      modify it under the terms of the GNU Lesser General Public
 
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 *      License as published by the Free Software Foundation; either
 
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 *      version 2 of the License, or (at your option) any later version.
 
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 * 
 
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 *      This library is distributed in the hope that it will be useful,
 
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 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 
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 *      Lesser General Public License for more details.
 
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 * 
 
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 *      You should have received a copy of the GNU Lesser General Public
 
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 *      License along with this library in the file COPYING.LIB;
 
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 *      if not, write to the Free Software Foundation, Inc.,
 
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 *      59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 
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 */
 
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#include "pthread.h"
 
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#include "implement.h"
 
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int
 
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pthread_setspecific (pthread_key_t key, const void *value)
 
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     /*
 
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      * ------------------------------------------------------
 
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      * DOCPUBLIC
 
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      *      This function sets the value of the thread specific
 
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      *      key in the calling thread.
 
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      *
 
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      * PARAMETERS
 
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      *      key
 
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      *              an instance of pthread_key_t
 
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      *      value
 
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      *              the value to set key to
 
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      *
 
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      *
 
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      * DESCRIPTION
 
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      *      This function sets the value of the thread specific
 
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      *      key in the calling thread.
 
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      *
 
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      * RESULTS
 
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      *              0               successfully set value
 
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      *              EAGAIN          could not set value
 
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      *              ENOENT          SERIOUS!!
 
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      *
 
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      * ------------------------------------------------------
 
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      */
 
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{
 
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  pthread_t self;
 
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  int result = 0;
 
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  if (key != ptw32_selfThreadKey)
 
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    {
 
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      /*
 
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       * Using pthread_self will implicitly create
 
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       * an instance of pthread_t for the current
 
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       * thread if one wasn't explicitly created
 
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       */
 
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      self = pthread_self ();
 
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      if (self.p == NULL)
 
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        {
 
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          return ENOENT;
 
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        }
 
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    }
 
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  else
 
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    {
 
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      /*
 
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       * Resolve catch-22 of registering thread with selfThread
 
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       * key
 
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       */
 
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      ptw32_thread_t * sp = (ptw32_thread_t *) pthread_getspecific (ptw32_selfThreadKey);
 
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      if (sp == NULL)
 
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        {
 
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          if (value == NULL)
 
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            {
 
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              return ENOENT;
 
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            }
 
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          self = *((pthread_t *) value);
 
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        }
 
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      else
 
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        {
 
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          self = sp->ptHandle;
 
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        }
 
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    }
 
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  result = 0;
 
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  if (key != NULL)
 
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    {
 
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      if (self.p != NULL && key->destructor != NULL && value != NULL)
 
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        {
 
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          /*
 
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           * Only require associations if we have to
 
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           * call user destroy routine.
 
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           * Don't need to locate an existing association
 
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           * when setting data to NULL for WIN32 since the
 
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           * data is stored with the operating system; not
 
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           * on the association; setting assoc to NULL short
 
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           * circuits the search.
 
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           */
 
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          ThreadKeyAssoc *assoc;
 
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          if (pthread_mutex_lock(&(key->keyLock)) == 0)
 
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            {
 
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              ptw32_thread_t * sp = (ptw32_thread_t *) self.p;
 
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              (void) pthread_mutex_lock(&(sp->threadLock));
 
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              assoc = (ThreadKeyAssoc *) sp->keys;
 
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              /*
 
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               * Locate existing association
 
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               */
 
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              while (assoc != NULL)
 
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                {
 
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                  if (assoc->key == key)
 
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                    {
 
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                      /*
 
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                       * Association already exists
 
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                       */
 
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                      break;
 
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                    }
 
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                  assoc = assoc->nextKey;
 
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                }
 
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              /*
 
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               * create an association if not found
 
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               */
 
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              if (assoc == NULL)
 
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                {
 
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                  result = ptw32_tkAssocCreate (sp, key);
 
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                }
 
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              (void) pthread_mutex_unlock(&(sp->threadLock));
 
154
            }
 
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          (void) pthread_mutex_unlock(&(key->keyLock));
 
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        }
 
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      if (result == 0)
 
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        {
 
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          if (!TlsSetValue (key->key, (LPVOID) value))
 
161
            {
 
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              result = EAGAIN;
 
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            }
 
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        }
 
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    }
 
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  return (result);
 
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}                               /* pthread_setspecific */