52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
#ifndef CBUFFEREDINPUTSTREAM_H
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#define CBUFFEREDINPUTSTREAM_H
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#include "CStreamBuffer.h"
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#include "CCondVar.h"
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#include "IInputStream.h"
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class CMutex;
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class IJob;
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class CBufferedInputStream : public IInputStream {
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public:
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CBufferedInputStream(CMutex*, IJob* adoptedCloseCB);
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~CBufferedInputStream();
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// the caller is expected to lock the mutex before calling
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// methods unless otherwise noted.
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// manipulators
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// write() appends n bytes to the buffer
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void write(const void*, UInt32 n) throw();
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// causes read() to always return immediately. if there is no
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// more data then it returns 0. further writes are discarded.
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void hangup() throw();
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// same as read() but caller must lock the mutex
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UInt32 readNoLock(void*, UInt32 count) throw(XIO);
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// accessors
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// same as getSize() but caller must lock the mutex
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UInt32 getSizeNoLock() const throw();
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// IInputStream overrides
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// these all lock the mutex for their duration
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virtual void close() throw(XIO);
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virtual UInt32 read(void*, UInt32 count) throw(XIO);
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virtual UInt32 getSize() const throw();
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private:
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CMutex* m_mutex;
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CCondVar<bool> m_empty;
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IJob* m_closeCB;
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CStreamBuffer m_buffer;
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bool m_closed;
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bool m_hungup;
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};
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#endif
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