wtf/ThreadSpecificWin.cpp

   1 /*
   2  * Copyright (C) 2009 Jian Li <jianli@chromium.org>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public License
  15  * along with this library; see the file COPYING.LIB.  If not, write to
  16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA 02110-1301, USA.
  18  *
  19  */
  20
  21 #include "config.h"
  22
  23 #include "ThreadSpecific.h"
  24 #include <wtf/Noncopyable.h>
  25
  26 #if USE(PTHREADS)
  27 #error This file should not be compiled by ports that do not use Windows native ThreadSpecific implementation.
  28 #endif
  29
  30 namespace WTF {
  31
  32 long& tlsKeyCount()
  33 {
  34     static long count;
  35     return count;
  36 }
  37
  38 DWORD* tlsKeys()
  39 {
  40     static DWORD keys[kMaxTlsKeySize];
  41     return keys;
  42 }
  43
  44 void ThreadSpecificThreadExit()
  45 {
  46     for (long i = 0; i < tlsKeyCount(); i++) {
  47         // The layout of ThreadSpecific<T>::Data does not depend on T. So we are safe to do the static cast to ThreadSpecific<int> in order to access its data member.
  48         ThreadSpecific<int>::Data* data = static_cast<ThreadSpecific<int>::Data*>(TlsGetValue(tlsKeys()[i]));
  49         if (data)
  50             data->destructor(data);
  51     }
  52 }
  53
  54 } // namespace WTF