68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
/*
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* Copyright 2001-2006, Haiku.
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* Distributed under the terms of the MIT License.
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*
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* Authors:
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* DarkWyrm <bpmagic@columbus.rr.com>
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* Pahtz <pahtz@yahoo.com.au>
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* Axel Dörfler, axeld@pinc-software.de
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*/
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#ifndef _LINK_RECEIVER_H
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#define _LINK_RECEIVER_H
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#include <OS.h>
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class BGradient;
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class BString;
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class BRegion;
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namespace BPrivate {
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class LinkReceiver {
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public:
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LinkReceiver(port_id port);
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virtual ~LinkReceiver(void);
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void SetPort(port_id port);
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port_id Port(void) { return fReceivePort; }
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status_t GetNextMessage(int32& code, bigtime_t timeout = B_INFINITE_TIMEOUT);
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bool HasMessages() const;
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bool NeedsReply() const;
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int32 Code() const;
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virtual status_t Read(void* data, ssize_t size);
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status_t ReadString(char** _string, size_t* _length = NULL);
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status_t ReadString(BString& string, size_t* _length = NULL);
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status_t ReadString(char* buffer, size_t bufferSize);
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status_t ReadRegion(BRegion* region);
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status_t ReadGradient(BGradient** gradient);
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template <class Type> status_t Read(Type *data)
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{ return Read(data, sizeof(Type)); }
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protected:
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virtual status_t ReadFromPort(bigtime_t timeout);
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virtual status_t AdjustReplyBuffer(bigtime_t timeout);
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void ResetBuffer();
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port_id fReceivePort;
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char* fRecvBuffer;
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int32 fRecvPosition; //current read position
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int32 fRecvStart; //start of current message
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int32 fRecvBufferSize;
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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 fReadError; //Read failed for current message
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};
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} // namespace BPrivate
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#endif // _LINK_RECEIVER_H
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