1/*
 2 * Copyright 2001-2005, Haiku.
 3 * Distributed under the terms of the MIT License.
 4 *
 5 * Authors:
 6 *		DarkWyrm <bpmagic@columbus.rr.com>
 7 *		Pahtz <pahtz@yahoo.com.au>
 8 *		Axel Dörfler, axeld@pinc-software.de
 9 */
10#ifndef _LINK_SENDER_H
11#define _LINK_SENDER_H
12
13
14#include <OS.h>
15
16
17namespace BPrivate {
18	
19class LinkSender {
20	public:
21		LinkSender(port_id sendport);
22		virtual ~LinkSender(void);
23
24		void SetPort(port_id port);
25		port_id	Port() const { return fPort; }
26
27		team_id TargetTeam() const;
28		void SetTargetTeam(team_id team);
29
30		status_t StartMessage(int32 code, size_t minSize = 0);
31		void CancelMessage(void);
32		status_t EndMessage(bool needsReply = false);
33
34		status_t Flush(bigtime_t timeout = B_INFINITE_TIMEOUT, bool needsReply = false);
35
36		status_t Attach(const void *data, size_t size);
37		status_t AttachString(const char *string, int32 maxLength = -1);
38		template <class Type> status_t Attach(const Type& data)
39		{
40			return Attach(&data, sizeof(Type));
41		}
42
43	protected:
44		size_t SpaceLeft() const { return fBufferSize - fCurrentEnd; }
45		size_t CurrentMessageSize() const { return fCurrentEnd - fCurrentStart; }
46
47		status_t AdjustBuffer(size_t newBufferSize, char **_oldBuffer = NULL);
48		status_t FlushCompleted(size_t newBufferSize);
49
50		port_id	fPort;
51		team_id fTargetTeam;
52
53		char	*fBuffer;
54		size_t	fBufferSize;
55
56		uint32	fCurrentEnd;		// current append position
57		uint32	fCurrentStart;		// start of current message
58
59		status_t fCurrentStatus;
60};
61
62
63inline team_id
64LinkSender::TargetTeam() const
65{
66	return fTargetTeam;
67}
68
69
70inline void
71LinkSender::SetTargetTeam(team_id team)
72{
73	fTargetTeam = team;
74}
75
76}	// namespace BPrivate
77
78#endif	/* _LINK_SENDER_H */