| /* |
| * Copyright (C) 2010 Apple Inc. All rights reserved. |
| * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies) |
| * Copyright (C) 2011,2017 Igalia S.L. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| #include "Attachment.h" |
| #include <wtf/Vector.h> |
| |
| namespace IPC { |
| |
| class MessageInfo { |
| public: |
| MessageInfo() = default; |
| |
| MessageInfo(size_t bodySize, size_t initialAttachmentCount) |
| : m_bodySize(bodySize) |
| , m_attachmentCount(initialAttachmentCount) |
| { |
| } |
| |
| void setBodyOutOfLine() |
| { |
| ASSERT(!isBodyOutOfLine()); |
| |
| m_isBodyOutOfLine = true; |
| m_attachmentCount++; |
| } |
| |
| bool isBodyOutOfLine() const { return m_isBodyOutOfLine; } |
| size_t bodySize() const { return m_bodySize; } |
| size_t attachmentCount() const { return m_attachmentCount; } |
| |
| private: |
| size_t m_bodySize { 0 }; |
| size_t m_attachmentCount { 0 }; |
| bool m_isBodyOutOfLine { false }; |
| }; |
| |
| class UnixMessage { |
| WTF_MAKE_FAST_ALLOCATED; |
| public: |
| UnixMessage(Encoder& encoder) |
| : m_attachments(encoder.releaseAttachments()) |
| , m_messageInfo(encoder.bufferSize(), m_attachments.size()) |
| , m_body(encoder.buffer()) |
| { |
| } |
| |
| UnixMessage(UnixMessage&& other) |
| { |
| m_attachments = WTFMove(other.m_attachments); |
| m_messageInfo = WTFMove(other.m_messageInfo); |
| if (other.m_bodyOwned) { |
| std::swap(m_body, other.m_body); |
| std::swap(m_bodyOwned, other.m_bodyOwned); |
| } else if (!m_messageInfo.isBodyOutOfLine()) { |
| m_body = static_cast<uint8_t*>(fastMalloc(m_messageInfo.bodySize())); |
| memcpy(m_body, other.m_body, m_messageInfo.bodySize()); |
| m_bodyOwned = true; |
| other.m_body = nullptr; |
| other.m_bodyOwned = false; |
| } |
| } |
| |
| ~UnixMessage() |
| { |
| if (m_bodyOwned) |
| fastFree(m_body); |
| } |
| |
| const Vector<Attachment>& attachments() const { return m_attachments; } |
| MessageInfo& messageInfo() { return m_messageInfo; } |
| |
| uint8_t* body() const { return m_body; } |
| size_t bodySize() const { return m_messageInfo.bodySize(); } |
| |
| void appendAttachment(Attachment&& attachment) |
| { |
| m_attachments.append(WTFMove(attachment)); |
| } |
| |
| private: |
| Vector<Attachment> m_attachments; |
| MessageInfo m_messageInfo; |
| uint8_t* m_body { nullptr }; |
| bool m_bodyOwned { false }; |
| }; |
| |
| } // namespace IPC |