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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "SharedDIB.h"
namespace mozilla {
namespace gfx {
SharedDIB::SharedDIB() :
mShMem(nullptr)
{
}
SharedDIB::~SharedDIB()
{
Close();
}
nsresult
SharedDIB::Create(uint32_t aSize)
{
Close();
mShMem = new base::SharedMemory();
if (!mShMem || !mShMem->Create("", false, false, aSize))
return NS_ERROR_OUT_OF_MEMORY;
return NS_OK;
}
bool
SharedDIB::IsValid()
{
if (!mShMem)
return false;
return mShMem->IsHandleValid(mShMem->handle());
}
nsresult
SharedDIB::Close()
{
delete mShMem;
mShMem = nullptr;
return NS_OK;
}
nsresult
SharedDIB::Attach(Handle aHandle, uint32_t aSize)
{
Close();
mShMem = new base::SharedMemory(aHandle, false);
if(!mShMem)
return NS_ERROR_OUT_OF_MEMORY;
return NS_OK;
}
nsresult
SharedDIB::ShareToProcess(base::ProcessId aTargetPid, Handle *aNewHandle)
{
if (!mShMem)
return NS_ERROR_UNEXPECTED;
if (!mShMem->ShareToProcess(aTargetPid, aNewHandle))
return NS_ERROR_UNEXPECTED;
return NS_OK;
}
} // namespace gfx
} // namespace mozilla
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