72 lines
2.4 KiB
C++
72 lines
2.4 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: LinkMsgReader.h
|
|
// Author: DarkWyrm <bpmagic@columbus.rr.com>
|
|
// Pahtz <pahtz@yahoo.com.au>
|
|
// Description: Class for receiving low-overhead port-based messages
|
|
//
|
|
//------------------------------------------------------------------------------
|
|
#ifndef _LINKMSGREADER_H
|
|
#define _LINKMSGREADER_H
|
|
|
|
#include <OS.h>
|
|
|
|
class LinkMsgReader
|
|
{
|
|
public:
|
|
LinkMsgReader(port_id port);
|
|
virtual ~LinkMsgReader(void);
|
|
|
|
virtual void SetPort(port_id port);
|
|
virtual port_id GetPort(void);
|
|
|
|
virtual status_t GetNextMessage(int32 *code, bigtime_t timeout = B_INFINITE_TIMEOUT);
|
|
virtual status_t Read(void *data, ssize_t size);
|
|
virtual status_t ReadString(char **string);
|
|
template <class Type> status_t Read(Type *data)
|
|
{
|
|
return Read(data, sizeof(Type));
|
|
}
|
|
|
|
protected:
|
|
virtual status_t ReadFromPort(bigtime_t timeout);
|
|
virtual status_t AdjustReplyBuffer(bigtime_t timeout);
|
|
void ResetBuffer();
|
|
|
|
port_id fReceivePort;
|
|
|
|
char *fRecvBuffer;
|
|
|
|
int32 fRecvPosition; //current read position
|
|
|
|
int32 fRecvStart; //start of current message
|
|
|
|
int32 fRecvBufferSize;
|
|
|
|
int32 fDataSize; //size of data in recv buffer
|
|
int32 fReplySize; //size of current reply message
|
|
|
|
status_t fReadError; //Read failed for current message
|
|
};
|
|
|
|
#endif
|