gr_buffer Class Reference
[Implementation Details]

#include <gr_buffer.h>

Collaboration diagram for gr_buffer:

[legend]List of all members.

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Detailed Description

Single writer, multiple reader fifo.

Public Member Functions
virtual	~gr_buffer ()
int	space_available () const
	return number of items worth of space available for writing
void *	write_pointer ()
	return pointer to write buffer.
void	update_write_pointer (int nitems)
	tell buffer that we wrote nitems into it
void	set_done (bool done)
bool	done () const
Protected Attributes
char *	d_base
unsigned int	d_bufsize
Friends
class	gr_buffer_reader
gr_buffer_sptr	gr_make_buffer (int nitems, size_t sizeof_item)
	Allocate a buffer that holds at least nitems of size sizeof_item.
gr_buffer_reader_sptr	gr_buffer_add_reader (gr_buffer_sptr buf, int history)
	create a new gr_buffer_reader and attach it to buffer buf

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Constructor & Destructor Documentation

gr_buffer::~gr_buffer (   )  [virtual]

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Member Function Documentation

bool gr_buffer::done (   )  const [inline]

void gr_buffer::set_done (  bool  done  )  [inline]

int gr_buffer::space_available (   )  const

return number of items worth of space available for writing

void gr_buffer::update_write_pointer (  int  nitems  )

tell buffer that we wrote nitems into it

void * gr_buffer::write_pointer (   )

return pointer to write buffer. The return value points at space that can hold at least space_available() items.

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Friends And Related Function Documentation

gr_buffer_reader_sptr gr_buffer_add_reader (  gr_buffer_sptr  buf, int  history )  [friend]

create a new gr_buffer_reader and attach it to buffer buf

friend class gr_buffer_reader [friend]

gr_buffer_sptr gr_make_buffer (  int  nitems, size_t  sizeof_item )  [friend]

Allocate a buffer that holds at least nitems of size sizeof_item. The total size of the buffer will be rounded up to a system dependent boundary. This is typically the system page size, but under MS windows is 64KB.

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Member Data Documentation

char* gr_buffer::d_base [protected]

unsigned int gr_buffer::d_bufsize [protected]

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The documentation for this class was generated from the following files:

• gr_buffer.h
• gr_buffer.cc

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