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

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• Hash : 277ec183
  Author :
  Date : 2010-04-23T16:07:34
  

  Added support for building glsl translator on posix platforms.
  Review URL: http://codereview.appspot.com/958043
  
  git-svn-id: https://angleproject.googlecode.com/svn/trunk@184 736b8ea6-26fd-11df-bfd4-992fa37f6226
  

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• src/compiler/ossource_posix.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.
  //
  
  //
  // This file contains the posix specific functions
  //
  #include "compiler/osinclude.h"
  
  #if !defined(ANGLE_OS_POSIX)
  #error Trying to build a posix specific file in a non-posix build.
  #endif
  
  //
  // Thread cleanup
  //
  
  //
  // Wrapper for Linux call to DetachThread.
  // This is required as pthread_cleanup_push() expects the cleanup routine
  // to return void.
  // 
  void DetachThreadLinux(void *)
  {
      DetachThread();
  }
  
  //
  // Registers cleanup handler, sets cancel type and state, and excecutes
  // the thread specific cleanup handler. When OpenGL applications are run with
  // the driver code, Linux OS does the thread cleanup.
  // 
  void OS_CleanupThreadData(void)
  {
      int old_cancel_state, old_cancel_type;
      void *cleanupArg = NULL;
  
      //
      // Set thread cancel state and push cleanup handler.
      //
      pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &old_cancel_state);
      pthread_cleanup_push(DetachThreadLinux, (void *) cleanupArg);
  
      //
      // Put the thread in deferred cancellation mode.
      //
      pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, &old_cancel_type);
  
      //
      // Pop cleanup handler and execute it prior to unregistering
      // the cleanup handler.
      //
      pthread_cleanup_pop(1);
  
      //
      // Restore the thread's previous cancellation mode.
      //
      pthread_setcanceltype(old_cancel_state, NULL);
  }
  
  //
  // Thread Local Storage Operations
  //
  OS_TLSIndex OS_AllocTLSIndex()
  {
      pthread_key_t pPoolIndex;
  
      //
      // Create global pool key.
      //
      if ((pthread_key_create(&pPoolIndex, NULL)) != 0) {
          assert(0 && "OS_AllocTLSIndex(): Unable to allocate Thread Local Storage");
          return false;
      }
      else {
          return pPoolIndex;
      }
  }
  
  
  bool OS_SetTLSValue(OS_TLSIndex nIndex, void *lpvValue)
  {
      if (nIndex == OS_INVALID_TLS_INDEX) {
          assert(0 && "OS_SetTLSValue(): Invalid TLS Index");
          return false;
      }
  
      if (pthread_setspecific(nIndex, lpvValue) == 0)
          return true;
      else
          return false;
  }
  
  
  bool OS_FreeTLSIndex(OS_TLSIndex nIndex)
  {
      if (nIndex == OS_INVALID_TLS_INDEX) {
          assert(0 && "OS_SetTLSValue(): Invalid TLS Index");
          return false;
      }
  
      //
      // Delete the global pool key.
      //
      if (pthread_key_delete(nIndex) == 0)
          return true;
      else
          return false;
  }
  

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