mirror of
https://github.com/mozilla/gecko-dev.git
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119 lines
2.9 KiB
C++
119 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2009
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Jim Mathies <jmathies@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "SharedDIB.h"
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namespace mozilla {
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namespace gfx {
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SharedDIB::SharedDIB() :
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mShMem(nsnull)
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{
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}
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SharedDIB::~SharedDIB()
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{
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Close();
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}
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nsresult
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SharedDIB::Create(PRUint32 aSize)
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{
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Close();
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mShMem = new base::SharedMemory();
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if (!mShMem || !mShMem->Create("", false, false, aSize))
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return NS_ERROR_OUT_OF_MEMORY;
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// Map the entire section
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if (!mShMem->Map(0))
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return NS_ERROR_FAILURE;
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return NS_OK;
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}
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bool
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SharedDIB::IsValid()
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{
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if (!mShMem)
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return false;
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return mShMem->IsHandleValid(mShMem->handle());
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}
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nsresult
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SharedDIB::Close()
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{
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if (mShMem)
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delete mShMem;
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mShMem = nsnull;
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return NS_OK;
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}
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nsresult
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SharedDIB::Attach(Handle aHandle, PRUint32 aSize)
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{
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Close();
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mShMem = new base::SharedMemory(aHandle, false);
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if(!mShMem)
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return NS_ERROR_OUT_OF_MEMORY;
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if (!mShMem->Map(aSize))
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return NS_ERROR_FAILURE;
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return NS_OK;
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}
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nsresult
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SharedDIB::ShareToProcess(base::ProcessHandle aChildProcess, Handle *aChildHandle)
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{
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if (!mShMem)
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return NS_ERROR_UNEXPECTED;
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if (!mShMem->ShareToProcess(aChildProcess, aChildHandle))
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return NS_ERROR_UNEXPECTED;
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return NS_OK;
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}
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} // gfx
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} // mozilla
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