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