зеркало из https://github.com/mozilla/gecko-dev.git
56 строки
1.3 KiB
C++
56 строки
1.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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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() : mShMem(nullptr) {}
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SharedDIB::~SharedDIB() { Close(); }
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nsresult SharedDIB::Create(uint32_t aSize) {
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Close();
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mShMem = new base::SharedMemory();
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if (!mShMem || !mShMem->Create(aSize)) return NS_ERROR_OUT_OF_MEMORY;
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return NS_OK;
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}
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bool SharedDIB::IsValid() { return mShMem && mShMem->IsValid(); }
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nsresult SharedDIB::Close() {
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delete mShMem;
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mShMem = nullptr;
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return NS_OK;
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}
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nsresult SharedDIB::Attach(Handle aHandle, uint32_t aSize) {
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Close();
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mShMem = new base::SharedMemory(aHandle, false);
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if (!mShMem) return NS_ERROR_OUT_OF_MEMORY;
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return NS_OK;
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}
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nsresult SharedDIB::ShareToProcess(base::ProcessId aTargetPid,
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Handle* aNewHandle) {
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if (!mShMem) return NS_ERROR_UNEXPECTED;
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if (!mShMem->ShareToProcess(aTargetPid, aNewHandle))
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return NS_ERROR_UNEXPECTED;
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return NS_OK;
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}
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} // namespace gfx
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} // namespace mozilla
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