83 lines
2.6 KiB
C++
83 lines
2.6 KiB
C++
//------------------------------------------------------------------------------
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// Copyright (c) 2001-2002, OpenBeOS
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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: LinkMsgSender.h
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// Author: DarkWyrm <bpmagic@columbus.rr.com>
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// Pahtz <pahtz@yahoo.com.au>
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// Description: Class for sending low-overhead port-based messaging
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//
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//------------------------------------------------------------------------------
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#ifndef LINKMSGSENDER_H
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#define LINKMSGSENDER_H
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#include <OS.h>
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class LinkMsgSender
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{
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public:
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LinkMsgSender(port_id sendport);
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virtual ~LinkMsgSender(void);
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status_t StartMessage(int32 code);
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void CancelMessage(void);
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status_t EndMessage(void);
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status_t Flush(bigtime_t timeout = B_INFINITE_TIMEOUT);
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// see BPrivate::BAppServerLink which inherits from BPortLink
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//status_t FlushWithReply(int32 *code);
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void SetPort(port_id port);
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port_id GetPort();
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status_t Attach(const void *data, ssize_t size);
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status_t AttachString(const char *string);
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template <class Type> status_t Attach(const Type& data)
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{
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return Attach(&data, sizeof(Type));
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}
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protected:
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status_t FlushCompleted(ssize_t newbuffersize);
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status_t AdjustReplyBuffer(bigtime_t timeout);
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void ResetReplyBuffer();
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port_id fSendPort;
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char *fSendBuffer;
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int32 fSendPosition; //current append position
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int32 fSendStart; //start of current message
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int32 fSendBufferSize;
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int32 fSendCount; //number of completed messages in buffer
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int32 fDataSize; //size of data in recv buffer
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int32 fReplySize; //size of current reply message
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status_t fWriteError; //Attach failed for current message
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};
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#endif
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