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MultiplexStreamBuf Class Reference

Used by MultiplexStream to implement an ostream that sends what is written to it to any number of additional sources, like other ostreams. More...

#include <multiplexStreamBuf.h>

List of all members.

Public Types
enum	BufferType { BT_none, BT_line }
enum	OutputType { OT_ostream, OT_stdio, OT_system_debug }
Public Member Functions
	MultiplexStreamBuf ()
virtual	~MultiplexStreamBuf ()
void	add_output (BufferType buffer_type, OutputType output_type, ostream *out=(ostream *) NULL, FILE *fout=(FILE *) NULL, bool owns_obj=false)
	Adds the indicated output destinition to the set of things that will be written to when characters are output to the MultiplexStream.
void	flush ()
	Forces out all output that hasn't yet been written.
Protected Member Functions
virtual int	overflow (int c)
	Called by the system ostream implementation when its internal buffer is filled, plus one character.
virtual int	sync ()
	Called by the system ostream implementation when the buffer should be flushed to output (for instance, on destruction).
Private Types
typedef pvector< Output >	Outputs
Private Member Functions
void	write_chars (const char *start, int length, bool flush)
	An internal function called by sync() and overflow() to store one or more characters written to the stream into the memory buffer.
Private Attributes
Outputs	_outputs
string	_line_buffer

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Detailed Description

Used by MultiplexStream to implement an ostream that sends what is written to it to any number of additional sources, like other ostreams.

Definition at line 45 of file multiplexStreamBuf.h.

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Member Typedef Documentation

typedef pvector<Output> MultiplexStreamBuf::Outputs [private]

Definition at line 88 of file multiplexStreamBuf.h.

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Member Enumeration Documentation

enum MultiplexStreamBuf::BufferType

Enumeration values: BT_none  BT_line  Definition at line 50 of file multiplexStreamBuf.h.

enum MultiplexStreamBuf::OutputType

Enumeration values: OT_ostream  OT_stdio  OT_system_debug  Definition at line 55 of file multiplexStreamBuf.h.

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Constructor & Destructor Documentation

MultiplexStreamBuf::MultiplexStreamBuf (   )

Definition at line 109 of file multiplexStreamBuf.cxx. References _outputs, MultiplexStreamBuf::Output::close(), and sync().

MultiplexStreamBuf::~MultiplexStreamBuf (   )  [virtual]

Definition at line 125 of file multiplexStreamBuf.cxx. References MultiplexStreamBuf::Output::_buffer_type, MultiplexStreamBuf::Output::_fout, MultiplexStreamBuf::Output::_out, MultiplexStreamBuf::Output::_output_type, _outputs, and MultiplexStreamBuf::Output::_owns_obj.

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Member Function Documentation

void MultiplexStreamBuf::add_output (  MultiplexStreamBuf::BufferType  buffer_type, MultiplexStreamBuf::OutputType  output_type, ostream *  out = (ostream *)NULL, FILE *  fout = (FILE *)NULL, bool  owns_obj = false )

Adds the indicated output destinition to the set of things that will be written to when characters are output to the MultiplexStream. Definition at line 149 of file multiplexStreamBuf.cxx. References write_chars(). Referenced by MultiplexStream::add_file(), MultiplexStream::add_ostream(), and MultiplexStream::MultiplexStream().

void MultiplexStreamBuf::flush (  void   )

Forces out all output that hasn't yet been written. Definition at line 177 of file multiplexStreamBuf.cxx. References write_chars().

int MultiplexStreamBuf::overflow (  int  c  )  [protected, virtual]

Called by the system ostream implementation when its internal buffer is filled, plus one character. Definition at line 196 of file multiplexStreamBuf.cxx. References streamsize, and write_chars().

int MultiplexStreamBuf::sync (  void   )  [protected, virtual]

Called by the system ostream implementation when the buffer should be flushed to output (for instance, on destruction). Definition at line 230 of file multiplexStreamBuf.cxx. References _line_buffer, length, and size_t. Referenced by MultiplexStreamBuf().

void MultiplexStreamBuf::write_chars (  const char *  start, int  length, bool  flush )  [private]

An internal function called by sync() and overflow() to store one or more characters written to the stream into the memory buffer. It is assumed that there is only one thread at a time running this code; it is the responsibility of the caller to grab the _lock mutex before calling this. Definition at line 269 of file multiplexStreamBuf.cxx. Referenced by add_output(), flush(), and overflow().

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Member Data Documentation

string MultiplexStreamBuf::_line_buffer [private]

Definition at line 91 of file multiplexStreamBuf.h. Referenced by sync().

Outputs MultiplexStreamBuf::_outputs [private]

Definition at line 89 of file multiplexStreamBuf.h. Referenced by MultiplexStreamBuf(), and ~MultiplexStreamBuf().

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

• panda/src/downloader/multiplexStreamBuf.h
• panda/src/downloader/multiplexStreamBuf.cxx

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