// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// Name     : pthread_detach.cpp

// Part of  : PThread library

// pthread_detach call is implemented.

// Version:

//

#include <pthread.h>

#include <stdio.h>

#include <errno.h>

#include "threadglobals.h"

#include "pthreadmisc.h"

EXPORT_C int pthread_detach(pthread_t thrHandle)

{

    _global_data_t *glbPtr;

    _pthread_node_t *tempPtr;

    _pthread_node_t *selfNodePtr;

    _pthread_node_t *thHandle;

    THR_PRINTF("[pthread] Begin pthread_detach\n");

    //Get the TLS value (self node pointer)

    selfNodePtr = (_pthread_node_t*) _pthread_getTls();

	//coverity[var_compare_op]

    if (NULL == selfNodePtr)

    {

        THR_PRINTF("[pthread] FATAL :TLS is not initialized \n");

        THR_PRINTF("[pthread] Terminating the process\n");

        RProcess rp;

        rp.Kill(0);                // Terminate the process

    }

    thHandle = (_pthread_node_t *)thrHandle;

	//coverity[var_deref_op]

    glbPtr = selfNodePtr->glbDataPtr;  // point to global struct

    glbPtr->lockThreadTable.Wait();    // Acquire the thread table lock

    // Traverse through the list, till destination node is reached

    for (tempPtr = glbPtr->start; 

         ((tempPtr != thHandle) && (tempPtr != NULL)); 

         tempPtr = tempPtr->next)

    {

        ;                 // Empty loop 

    }

    if (NULL == tempPtr)                    // Not found; 

    {

        THR_PRINTF("[pthread] End of pthread_detach");

        glbPtr->lockThreadTable.Signal();  //release global lock

        return ESRCH;

    }

    thHandle->lockNode.Wait(); // Acquire the node lock 

    if (PTHREAD_CREATE_DETACHED == thHandle->detachState) //already detached

    {

        thHandle->lockNode.Signal();      // release the node lock

        glbPtr->lockThreadTable.Signal(); // release global lock

        THR_PRINTF("[pthread] End of pthread_detach\n");

        return EINVAL;

    }

    if (thHandle->hasAnyThreadJoined)  // some thread has already joined

    {                                               

        thHandle->lockNode.Signal();      // release the node lock

        glbPtr->lockThreadTable.Signal(); // release global lock

        THR_PRINTF("[pthread] End of pthread_detach\n");

        return EINVAL;

    }

    if (_THREAD_ZOMBIE == thHandle->threadState) // already terminated

    {

        _pthread_deleteNode(thHandle, glbPtr, NULL); //Free it

        THR_PRINTF("[pthread] End of pthread_detach\n");

        return 0;

    }

    glbPtr->lockThreadTable.Signal();  // release thread table lock

    // Now it is clear to detach....

    thHandle->detachState = PTHREAD_CREATE_DETACHED;

    thHandle->lockNode.Signal();      // release the node lock    

    THR_PRINTF("[pthread] End of pthread_detach\n");

    return 0;

}

// End of file