genericopenlibs/openenvcore/libpthread/src/pthread_setspecific.cpp
changeset 0 e4d67989cc36
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/genericopenlibs/openenvcore/libpthread/src/pthread_setspecific.cpp	Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,94 @@
+// 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_setspecific.cpp
+// Part of  : PThread library
+// pthread_setspecific call is implemented.
+// Version:
+//
+
+
+
+#include <pthread.h>
+#include <errno.h>
+#include "threadglobals.h"
+#include "pthreadmisc.h"
+
+EXPORT_C int pthread_setspecific(pthread_key_t key, const void *value)
+{
+
+    _global_data_t *glbPtr;
+    _pthread_node_t *selfNodePtr;
+    _pkey_node_t *tlsPtr;
+    
+    THR_PRINTF("[pthread] Begin pthread_setspecific\n");
+    
+    if (key >= PTHREAD_KEYS_MAX)
+    {
+        THR_PRINTF("[pthread] End pthread_setspecific\n");
+        return EINVAL;
+    }
+        
+    //Get the TLS value (self node pointer)
+    selfNodePtr = (_pthread_node_t*) _pthread_getTls();
+    if (NULL == selfNodePtr)    // This should never happen
+    {
+        return ENOMEM;
+    }
+    
+    glbPtr = selfNodePtr->glbDataPtr;  // point to global struct
+    glbPtr->lockThreadTable.Wait();    // Acquire the thread table lock
+
+    int idx;
+    idx = key / 32;
+    
+    int bitPos;
+    bitPos = key % 32;
+    
+    if (((glbPtr->statusflag[idx]) & (0x1<<bitPos)) == _KEY_UNUSED)
+    {
+        THR_PRINTF("[pthread] End pthread_setspecific\n");
+        glbPtr->lockThreadTable.Signal();  // release thread table lock
+        return EINVAL;
+    }
+    
+    // Lock the TCB
+    selfNodePtr->lockNode.Wait();
+    
+    for (tlsPtr = selfNodePtr->tlsHead; tlsPtr != NULL; tlsPtr = tlsPtr->next)
+    {
+        if (tlsPtr->keyNumber == key)
+        {
+                tlsPtr->tls = (void*)value;
+                break; 
+        }
+    }
+
+    if (tlsPtr == NULL) // First node
+    {
+        // This should never happen; key tobe set
+        selfNodePtr->lockNode.Signal();
+        glbPtr->lockThreadTable.Signal();  // release thread table lock
+        return EINVAL;
+    }
+
+    // Unlock TCB node
+    selfNodePtr->lockNode.Signal();
+        
+    glbPtr->lockThreadTable.Signal();  // release thread table lock
+    
+    THR_PRINTF("[pthread] End pthread_setspecific\n");
+    return 0;
+}
+
+// End of file