1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/ipc/SharedDIB.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,77 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "SharedDIB.h"
1.10 +
1.11 +namespace mozilla {
1.12 +namespace gfx {
1.13 +
1.14 +SharedDIB::SharedDIB() :
1.15 + mShMem(nullptr)
1.16 +{
1.17 +}
1.18 +
1.19 +SharedDIB::~SharedDIB()
1.20 +{
1.21 + Close();
1.22 +}
1.23 +
1.24 +nsresult
1.25 +SharedDIB::Create(uint32_t aSize)
1.26 +{
1.27 + Close();
1.28 +
1.29 + mShMem = new base::SharedMemory();
1.30 + if (!mShMem || !mShMem->Create("", false, false, aSize))
1.31 + return NS_ERROR_OUT_OF_MEMORY;
1.32 +
1.33 + return NS_OK;
1.34 +}
1.35 +
1.36 +bool
1.37 +SharedDIB::IsValid()
1.38 +{
1.39 + if (!mShMem)
1.40 + return false;
1.41 +
1.42 + return mShMem->IsHandleValid(mShMem->handle());
1.43 +}
1.44 +
1.45 +nsresult
1.46 +SharedDIB::Close()
1.47 +{
1.48 + delete mShMem;
1.49 +
1.50 + mShMem = nullptr;
1.51 +
1.52 + return NS_OK;
1.53 +}
1.54 +
1.55 +nsresult
1.56 +SharedDIB::Attach(Handle aHandle, uint32_t aSize)
1.57 +{
1.58 + Close();
1.59 +
1.60 + mShMem = new base::SharedMemory(aHandle, false);
1.61 + if(!mShMem)
1.62 + return NS_ERROR_OUT_OF_MEMORY;
1.63 +
1.64 + return NS_OK;
1.65 +}
1.66 +
1.67 +nsresult
1.68 +SharedDIB::ShareToProcess(base::ProcessHandle aChildProcess, Handle *aChildHandle)
1.69 +{
1.70 + if (!mShMem)
1.71 + return NS_ERROR_UNEXPECTED;
1.72 +
1.73 + if (!mShMem->ShareToProcess(aChildProcess, aChildHandle))
1.74 + return NS_ERROR_UNEXPECTED;
1.75 +
1.76 + return NS_OK;
1.77 +}
1.78 +
1.79 +} // gfx
1.80 +} // mozilla
