haiku/src/servers/app/RAMLinkMsgReader.h
Axel Dörfler 33bbe22391 Moved app_server files to app/.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@11972 a95241bf-73f2-0310-859d-f6bbb57e9c96
2005-03-24 14:45:52 +00:00

78 lines
2.5 KiB
C++

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