33bbe22391
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@11972 a95241bf-73f2-0310-859d-f6bbb57e9c96
78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
// Copyright (c) 2001-2002, Haiku
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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// File Name: RAMLinkMsgReader.h
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// Author: DarkWyrm <bpmagic@columbus.rr.com>
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// Description: Class for reading Link messages from a memory buffer
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//
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//------------------------------------------------------------------------------
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#ifndef RAM_LINK_MSG_READER_H
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#define RAM_LINK_MSG_READER_H
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#include <LinkMsgReader.h>
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/*
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This class is somewhat an inheritance hack to avoid some *serious* code
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duplication in the app_server. Its only intended use is for reading back
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PortLink message sent over an area in cases where it is too large to fit
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through a port.
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Expected format:
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int32 message code
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size_t buffer size
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[data buffer]
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*/
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class RAMLinkMsgReader : public LinkMsgReader
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{
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public:
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RAMLinkMsgReader(int8 *buffer);
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RAMLinkMsgReader(void);
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~RAMLinkMsgReader(void);
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void SetBuffer(int8 *buffer);
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int8 *GetBuffer(void);
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size_t GetBufferSize(void);
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int32 Code(void) { return fCode; }
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status_t Read(void *data, ssize_t size);
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status_t ReadString(char **string);
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template <class Type> status_t Read(Type *data)
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{
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return Read(data, sizeof(Type));
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}
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// These should never need to be called where this class is used. However, we do
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// need to make debugging easier for such contexts...
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status_t GetNextMessage(int32 *code, bigtime_t timeout);
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void SetPort(port_id port);
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port_id GetPort(void);
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protected:
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int8 *fBuffer, *fAttachStart;
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int8 *fPosition;
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size_t fAttachSize;
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int32 fCode;
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};
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#endif
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