NAME

       ost::FixedBuffer -

       A buffer class that holds a known capacity of fixed sized objects defined during creation.

SYNOPSIS

       #include <buffer.h>

       Inherits ost::Buffer.

   Public Member Functions
       FixedBuffer (size_t capacity, size_t objsize)
           Create a buffer of known capacity for objects of a specified size.
       FixedBuffer (const FixedBuffer &fb)
           Create a copy of an existing fixed size buffer and duplicate it's contents.
       virtual ~FixedBuffer ()
           Destroy the fixed buffer and free the memory used to store objects.
       FixedBuffer & operator= (const FixedBuffer &fb)
       bool isValid (void)

   Protected Member Functions
       size_t onPeek (void *buf)
           Return the first object in the buffer.
       size_t onWait (void *buf)
           Wait for and return a fixed object in the buffer.
       size_t onPost (void *buf)
           Post an object of the appropriate size into the buffer.

   Additional Inherited Members

Detailed Description

       A buffer class that holds a known capacity of fixed sized objects defined during creation.

       Author:
           David Sugar dyfet@ostel.com producer/consumer buffer for fixed size objects.

Constructor & Destructor Documentation

   ost::FixedBuffer::FixedBuffer (size_tcapacity, size_tobjsize)
       Create a buffer of known capacity for objects of a specified size.

       Parameters:
           capacity of the buffer.
           objsize for each object held in the buffer.

   ost::FixedBuffer::FixedBuffer (const FixedBuffer &fb)
       Create a copy of an existing fixed size buffer and duplicate it's contents.

       Parameters:
           fb existing FixedBuffer object.

   virtual ost::FixedBuffer::~FixedBuffer () [virtual]
       Destroy the fixed buffer and free the memory used to store objects.

Member Function Documentation

   bool ost::FixedBuffer::isValid (void) [virtual]
       Reimplemented from ost::Buffer.

   size_t ost::FixedBuffer::onPeek (void *buf) [protected],  [virtual]
       Return the first object in the buffer.

       Returns:
           predefined size of this buffers objects.

       Parameters:
           buf pointer to copy contents of head of buffer to.

       Implements ost::Buffer.

   size_t ost::FixedBuffer::onPost (void *buf) [protected],  [virtual]
       Post an object of the appropriate size into the buffer.

       Returns:
           predefined size of this buffers objects.

       Parameters:
           buf pointer to data to copy into the buffer.

       Implements ost::Buffer.

   size_t ost::FixedBuffer::onWait (void *buf) [protected],  [virtual]
       Wait for and return a fixed object in the buffer.

       Returns:
           predefined size of this buffers objects.

       Parameters:
           buf pointer to hold object returned from the buffer.

       Implements ost::Buffer.

   FixedBuffer& ost::FixedBuffer::operator= (const FixedBuffer &fb)

Author

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