author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 02:01:42 +0200 | |
changeset 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
0
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// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// Name : pthread_key_create.cpp |
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// Part of : PThread library |
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// pthread_key_create call is implemented. |
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// Version: |
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// |
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#include <pthread.h> |
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#include <errno.h> |
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#include "threadglobals.h" |
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#include "pthreadmisc.h" |
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|
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int _insertKeyNodeInList(_pkey_node_t *newTlsPtr,_pthread_node_t *temp) |
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{ |
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_pkey_node_t *tlsPtr; |
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_pkey_node_t *prevTlsPtr; |
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|
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// Insert in a sorted list |
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tlsPtr = temp->tlsHead; |
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if (tlsPtr == NULL) // First node |
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{ |
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temp->tlsHead = newTlsPtr; |
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} |
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else |
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{ |
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for (tlsPtr = temp->tlsHead, prevTlsPtr = NULL; |
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tlsPtr != NULL; |
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prevTlsPtr = tlsPtr,tlsPtr = tlsPtr->next) |
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{ |
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if (tlsPtr->keyNumber == newTlsPtr->keyNumber) |
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{ |
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// This happen very rearly, but valid when called from |
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// _createKeyList |
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return -1; |
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} |
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else if(tlsPtr->keyNumber > newTlsPtr->keyNumber) |
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{ |
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if (temp->tlsHead == tlsPtr) //Sorted first node case |
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{ |
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newTlsPtr->next = tlsPtr; |
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temp->tlsHead = newTlsPtr; |
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break; |
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} |
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else // other than first node |
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{ |
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newTlsPtr->next = tlsPtr; |
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prevTlsPtr->next = newTlsPtr; |
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break; |
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} |
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} |
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|
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} |
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|
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if (tlsPtr == NULL) // Means add at the end |
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{ |
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prevTlsPtr->next = newTlsPtr; |
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} |
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} |
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return 0; |
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} |
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|
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|
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static int _createKeyInAllThreads(_global_data_t *glbPtr, int keyNumber) |
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{ |
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_pthread_node_t *temp; |
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_pkey_node_t *newTlsPtr; |
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|
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//For all threads |
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for (temp = glbPtr->start; temp != NULL; temp = temp->next) |
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{ |
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newTlsPtr = new _pkey_node_t; |
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if (NULL == newTlsPtr) // This is a temporary fix for the OOM bug. |
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{ |
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newTlsPtr = new _pkey_node_t; |
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} |
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if (NULL == newTlsPtr) // Memory really exhausted |
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{ // Permanent fix is to delete old keys from all threads |
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return -1; |
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} |
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newTlsPtr->next = NULL; |
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newTlsPtr->tls = NULL; |
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newTlsPtr->keyNumber = keyNumber; |
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|
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// Lock the TCB |
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temp->lockNode.Wait(); |
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|
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_insertKeyNodeInList(newTlsPtr,temp); |
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|
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// Unlock TCB node |
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temp->lockNode.Signal(); |
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} // end of outer for loop |
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return 0; |
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} |
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EXPORT_C int pthread_key_create(pthread_key_t *key, destructor_routine dest) |
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{ |
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int loopvar; |
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_global_data_t *glbPtr; |
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_pthread_node_t *selfNodePtr; |
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THR_PRINTF("[pthread] Begin pthread_key_create\n"); |
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//Get the TLS value (self node pointer) |
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selfNodePtr = (_pthread_node_t*) _pthread_getTls(); |
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//coverity[var_compare_op] |
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if (NULL == selfNodePtr) // This should never happen |
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{ |
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THR_PRINTF("[pthread] FATAL :TLS is not initialized \n"); |
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THR_PRINTF("[pthread] Terminating the process\n"); |
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RProcess rp; |
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rp.Kill(0); // Terminate the process |
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} |
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//coverity[var_deref_op] |
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glbPtr = selfNodePtr->glbDataPtr; // point to global struct |
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glbPtr->lockThreadTable.Wait(); // Acquire the thread table lock |
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// Find a free key in pthread_key_list |
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for (loopvar = 0; loopvar < PTHREAD_KEYS_MAX; loopvar++) |
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{ |
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int idx; |
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idx = loopvar / 32; |
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int bitPos; |
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bitPos = loopvar % 32; |
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if (((glbPtr->statusflag[idx]) & (0x1<<bitPos)) == _KEY_UNUSED) |
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{ |
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// Set it to used |
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glbPtr->statusflag[idx] |= (0x1<<bitPos); |
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glbPtr->pthread_key_list[loopvar].destr = dest; |
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// Create one key node in all the threads |
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if (_createKeyInAllThreads(glbPtr, loopvar) == -1) |
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{ |
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// Error : Should not hit any time |
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glbPtr->lockThreadTable.Signal(); //release thread table lock |
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return EAGAIN; |
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} |
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glbPtr->lockThreadTable.Signal(); // release thread table lock |
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*key = loopvar; |
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THR_PRINTF("[pthread] End pthread_key_create\n"); |
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return 0; |
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} |
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} |
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glbPtr->lockThreadTable.Signal(); // release thread table lock |
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THR_PRINTF("[pthread] End pthread_key_create\n"); |
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return EAGAIN; |
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} |
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// End of file |