--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/isolationserver/messagequeue/src/msgqinternals.cpp Tue Feb 02 01:10:06 2010 +0200
@@ -0,0 +1,236 @@
+/**
+ * @file MsgQInternals.cpp
+ * Description: Source file for MsgQLib
+ * Copyright (c) 2007 Nokia Corporation.
+* All rights reserved.
+* Redistribution and use in source and binary forms, with or without modification,
+* are permitted provided that the following conditions are met:
+* Redistributions of source code must retain the above copyright notice, this list
+* of conditions and the following disclaimer.Redistributions in binary form must
+* reproduce the above copyright notice, this list of conditions and the following
+* disclaimer in the documentation and/or other materials provided with the distribution.
+* Neither the name of the Nokia Corporation nor the names of its contributors may be used
+* to endorse or promote products derived from this software without specific prior written
+* permission.
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+* SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+#include <stdlib.h>
+#include <msgqinternal.h>
+#include <e32property.h>
+
+/* Declaration and definition of Internal Functions and data structures */
+#ifdef __WINSCW__
+
+#include <e32std.h>
+typedef void TAny;
+#include <pls.h> // For emulator WSD API
+
+const TUid KMsgQLibUid3 = {0xA0001319};
+
+
+typedef struct {
+ MSGQ_INFO_PTR _MsgQInfo[MSGQ_TBL_SZ];
+ MSGQ_INFO_LIST_PTR _MsgQListHead;
+}MsgQGlobalData;
+
+int InitWSDVar(MsgQGlobalData* p) {
+ p->_MsgQListHead = NULL;
+ return 0;
+}
+MsgQGlobalData* GetGlobal() {
+ // Access the PLS of this process
+ MsgQGlobalData* p = Pls<MsgQGlobalData>(KMsgQLibUid3, &InitWSDVar);
+ return p;
+}
+
+
+MSGQ_INFO_PTR* _MsgQInfo() {
+ //return &(GetGlobal()->_MsgQInfo[0]); // orig code
+ MSGQ_INFO_PTR* p = (GetGlobal()->_MsgQInfo);
+ return p;
+ //return (GetGlobal()->_MsgQInfo); // modified line
+};
+
+MSGQ_INFO_LIST_PTR* _MsgQListHead() {
+ return &(GetGlobal()->_MsgQListHead);
+};
+
+#define MsgQInfo (_MsgQInfo())
+#define MsgQListHead (*_MsgQListHead())
+
+#else
+MSGQ_INFO_PTR MsgQInfo[MSGQ_TBL_SZ];
+MSGQ_INFO_LIST_PTR MsgQListHead = NULL;
+#endif
+
+inline unsigned int HashIndex(ULONG qName);
+
+/*************** INTERNAL FUNCTIONS ******************************/
+
+/***************************************************************************
+* InstallMsqQTable (qName, qid, semId, sendState, numMsgs, err)
+* Function: This function installs a queue into the hash table
+****************************************************************************/
+
+int InstallMsqQTable(ULONG qName, int qId, int semId, int* err) {
+
+ MSGQ_INFO_PTR pMsgQInfo = NULL;
+ unsigned int index;
+
+ if ((pMsgQInfo = MsgQTableLookup(qName)) == NULL) {
+ pMsgQInfo = (MSGQ_INFO_PTR)malloc(sizeof(*pMsgQInfo));
+
+ if(pMsgQInfo != NULL) {
+ index = HashIndex(qName);
+
+ pMsgQInfo->next = MsgQInfo[index];
+ MsgQInfo[index] = pMsgQInfo;
+ pMsgQInfo->qName = qName;
+ pMsgQInfo->qId = qId;
+ pMsgQInfo->semId = semId;
+ pMsgQInfo->sendState = MSG_Q_READY;
+ pMsgQInfo->numMsgs = 0;
+
+ *err = OK;
+ return (OK);
+ }
+ else
+ *err = KMsgQLibNoMemoryErr;
+ }
+ else
+ *err = KMsgQLibQIdErr;
+
+ return(ERROR);
+
+}
+
+
+/******************************************************************************
+* HashIndex
+* Function: This function returns the hash index
+*******************************************************************************/
+
+inline unsigned int HashIndex(ULONG qName) {
+ unsigned int hash_index = (qName % MSGQ_TBL_SZ);
+ //return(qName % MSGQ_TBL_SZ);
+ return hash_index;
+}
+
+
+/************************************************************************
+* MsgQTableLookup (qName)
+* Function: This function finds the block pointer for each queue
+*************************************************************************/
+
+MSGQ_INFO* MsgQTableLookup(ULONG qName) {
+ MSGQ_INFO_PTR pMsgQInfo = NULL;
+
+ for (pMsgQInfo = MsgQInfo[HashIndex(qName)]; pMsgQInfo != NULL; pMsgQInfo = pMsgQInfo->next) {
+ if (qName == pMsgQInfo->qName)
+ return(pMsgQInfo);
+ }
+
+ return(NULL);
+}
+
+
+/*************************************************************************
+* RemoveFromMsqQTable (qName, err)
+* Function: This function removes a queue from the hash table
+**************************************************************************/
+
+
+int RemoveFromMsqQTable(ULONG qName, int* err) {
+ unsigned int index = 0;
+ MSGQ_INFO_PTR prev = NULL;
+ MSGQ_INFO_PTR pMsgQInfo = NULL;
+
+ index = HashIndex(qName);
+ for (pMsgQInfo = MsgQInfo[index]; pMsgQInfo != NULL; pMsgQInfo = pMsgQInfo->next) {
+ if (qName == pMsgQInfo->qName)
+ break;
+ prev = pMsgQInfo;
+ }
+
+ if (pMsgQInfo != NULL) {
+ if (prev == NULL)
+ MsgQInfo[index] = pMsgQInfo->next;
+ else
+ prev->next = pMsgQInfo->next;
+
+ free((void*)pMsgQInfo);
+ *err = OK;
+ return (OK);
+ }
+ else
+ *err = KMsgQLibQIdErr;
+
+ return(ERROR);
+}
+
+
+/************************************************************************
+* AddToMsgQTable (qName)
+* Function: Adding a queue to list
+*************************************************************************/
+
+void AddToMsgQTable(ULONG qName) {
+ MSGQ_INFO_LIST_PTR tempNext;
+
+ if (MsgQListHead != NULL) {
+ /* subsequent entries */
+ tempNext = MsgQListHead->next;
+
+ if ((MsgQListHead->next = (MSGQ_INFO_LIST*)malloc(sizeof(MSGQ_INFO_LIST))) != NULL) {
+ MsgQListHead->next->next = tempNext;
+ MsgQListHead->next->qName = qName;
+ }
+ else
+ MsgQListHead->next = tempNext;
+ }
+ else {
+ if ((MsgQListHead = (MSGQ_INFO_LIST*)malloc(sizeof(MSGQ_INFO_LIST))) != NULL) {
+ MsgQListHead->next = NULL;
+ MsgQListHead->qName = qName;
+ }
+ }
+}
+
+/************************************************************************
+* DeleteFromMsgQTable (qName)
+* Function: removing a queu entry from list
+*************************************************************************/
+
+void DeleteFromMsgQTable(ULONG qName) {
+ MSGQ_INFO_LIST_PTR prev = NULL;
+ MSGQ_INFO_LIST_PTR pMsgQInfo = NULL;
+
+ for (pMsgQInfo = MsgQListHead; pMsgQInfo != NULL; pMsgQInfo = pMsgQInfo->next) {
+ if (qName == pMsgQInfo->qName)
+ break;
+ prev = pMsgQInfo;
+ }
+
+ if (pMsgQInfo != NULL) {
+ /* Check whether prev pointer is null or not. If it is Null, update Head pointer */
+ if( prev == NULL )
+ MsgQListHead = MsgQListHead->next ;
+
+ /* Else update the linked list by removing present node and updating prev next pointer */
+ else
+ prev->next = pMsgQInfo->next;
+
+ /* Now free up the memory used by the present node */
+ free((void*) pMsgQInfo);
+ }
+}
+
+// end of fil