kc3-lang/angle/src/compiler/InitializeDll.cpp

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• Author : alokp@chromium.org
  Date : 2010-07-27 18:37:55
  Hash : 34b99cdf
  Message : De-allocate memory in ShFinalize(). There still seems to be a bug here if the translator is used in a multi-threaded environment. It seems memory local to only one thread is being deallocated - the thread from which ShFinalize() is called. I will look into it closely in the next CL. Review URL: http://codereview.appspot.com/1878044 git-svn-id: https://angleproject.googlecode.com/svn/trunk@353 736b8ea6-26fd-11df-bfd4-992fa37f6226

• src/compiler/InitializeDll.cpp

• //
  // Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  #include "compiler/InitializeDll.h"
  
  #include "compiler/InitializeGlobals.h"
  #include "compiler/InitializeParseContext.h"
  #include "compiler/osinclude.h"
  
  OS_TLSIndex ThreadInitializeIndex = OS_INVALID_TLS_INDEX;
  
  bool InitProcess()
  {
      if (ThreadInitializeIndex != OS_INVALID_TLS_INDEX) {
          //
          // Function is re-entrant.
          //
          return true;
      }
  
      ThreadInitializeIndex = OS_AllocTLSIndex();
  
      if (ThreadInitializeIndex == OS_INVALID_TLS_INDEX) {
          assert(0 && "InitProcess(): Failed to allocate TLS area for init flag");
          return false;
      }
  
  
      if (!InitializePoolIndex()) {
          assert(0 && "InitProcess(): Failed to initalize global pool");
          return false;
      }
  
      if (!InitializeParseContextIndex()) {
          assert(0 && "InitProcess(): Failed to initalize parse context");
          return false;
      }
  
      return InitThread();
  }
  
  bool DetachProcess()
  {
      bool success = true;
  
      if (ThreadInitializeIndex == OS_INVALID_TLS_INDEX)
          return true;
  
      success = DetachThread();
  
      if (!FreeParseContextIndex())
          success = false;
  
      FreePoolIndex();
  
      OS_FreeTLSIndex(ThreadInitializeIndex);
      ThreadInitializeIndex = OS_INVALID_TLS_INDEX;
  
      return success;
  }
  
  bool InitThread()
  {
      //
      // This function is re-entrant
      //
      if (ThreadInitializeIndex == OS_INVALID_TLS_INDEX) {
          assert(0 && "InitThread(): Process hasn't been initalised.");
          return false;
      }
  
      if (OS_GetTLSValue(ThreadInitializeIndex) != 0)
          return true;
  
      InitializeGlobalPools();
  
      if (!InitializeGlobalParseContext())
          return false;
  
      if (!OS_SetTLSValue(ThreadInitializeIndex, (void *)1)) {
          assert(0 && "InitThread(): Unable to set init flag.");
          return false;
      }
  
      return true;
  }
  
  bool DetachThread()
  {
      bool success = true;
  
      if (ThreadInitializeIndex == OS_INVALID_TLS_INDEX)
          return true;
  
      //
      // Function is re-entrant and this thread may not have been initalised.
      //
      if (OS_GetTLSValue(ThreadInitializeIndex) != 0) {
          if (!OS_SetTLSValue(ThreadInitializeIndex, (void *)0)) {
              assert(0 && "DetachThread(): Unable to clear init flag.");
              success = false;
          }
  
          if (!FreeParseContext())
              success = false;
  
          FreeGlobalPools();
      }
  
      return success;
  }