78 lines
2.4 KiB
C++
78 lines
2.4 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: PortLink.h
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// Author: DarkWyrm <bpmagic@columbus.rr.com>
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// Description: Class for low-overhead port-based messaging
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//
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//------------------------------------------------------------------------------
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#ifndef _PORTLINK_H
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#define _PORTLINK_H
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#include <BeBuild.h>
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#include <OS.h>
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class PortMessage;
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class PortLink
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{
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public:
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PortLink(port_id port);
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PortLink(const PortLink &link);
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virtual ~PortLink(void);
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void SetOpCode(int32 code);
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void SetPort(port_id port);
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port_id GetPort();
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status_t Flush(bigtime_t timeout = B_INFINITE_TIMEOUT);
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status_t FlushWithReply(PortMessage *msg,bigtime_t timeout=B_INFINITE_TIMEOUT);
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status_t FlushToSession();
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void MakeEmpty();
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status_t Attach(const void *data, size_t size);
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status_t AttachString(const char *string);
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template <class Type> status_t Attach(Type data)
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{
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int32 size = sizeof(Type);
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if (4096 - fSendPosition > size){
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memcpy(fSendBuffer + fSendPosition, &data, size);
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fSendPosition += size;
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*fDataSize+=size;
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return B_OK;
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}
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return B_NO_MEMORY;
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}
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private:
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bool port_ok;
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port_id fSendPort;
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port_id fReceivePort;
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char *fSendBuffer;
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int32 fSendPosition;
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int32 fSendCode;
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int32 *fDataSize;
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};
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#endif
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