зеркало из https://github.com/mozilla/gecko-dev.git
93 строки
2.0 KiB
C++
93 строки
2.0 KiB
C++
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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//
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// Necessary hooks for QA partner to access custom objects within
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// Communicator
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//
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#include <windows.h>
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#include <windowsx.h>
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#include "qahook.h"
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static HANDLE hSharedMemory = NULL;
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static CSharedData *pData = NULL;
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//
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// *open existing* shared memory chunk
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// once you have the pointer to the new segment
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// use this pointer to access data, e.g.:
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//
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// if(pData->m_dwBytesUsed > 0)
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// {
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// // use pData->m_buf here
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// }
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//
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CSharedData *
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OpenExistingSharedMemory(void)
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{
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#ifdef WIN32
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DWORD dwSize;
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LPCTSTR szObjectName = SHARED_MEMORY_CHUNK_NAME;
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if (pData != NULL)
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return pData;
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hSharedMemory = OpenFileMapping(
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FILE_MAP_WRITE /*PAGE_READWRITE*/,FALSE,szObjectName);
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if(hSharedMemory == 0)
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{
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return NULL;
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}
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pData = (CSharedData *)MapViewOfFile(
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hSharedMemory,FILE_MAP_ALL_ACCESS,0,0,0);
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if(pData == NULL)
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{
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return NULL;
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}
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dwSize = pData->m_dwSize;
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return pData;
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#else
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return NULL;
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#endif // WIN32
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}
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//
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// to close shared memory segment
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//
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void
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CloseSharedMemory(void)
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{
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#ifdef WIN32
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if (pData != 0)
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{
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UnmapViewOfFile(pData);
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pData = 0;
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}
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if(hSharedMemory != 0)
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{
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CloseHandle(hSharedMemory);
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hSharedMemory = 0;
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}
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#else
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return;
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#endif // WIN32
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}
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