gr_top_block Class Reference
[Implementation Details]

Top-level hierarchical block representing a flowgraph. More...

#include <gr_top_block.h>

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List of all members.

Public Member Functions

 ~gr_top_block ()
void run ()
 The simple interface to running a flowgraph.
void start ()
void stop ()
void wait ()
virtual void lock ()
virtual void unlock ()
void dump ()

Protected Member Functions

 gr_top_block (const std::string &name)

Friends

gr_top_block_sptr gr_make_top_block (const std::string &name)


Detailed Description

Top-level hierarchical block representing a flowgraph.

Constructor & Destructor Documentation

gr_top_block::gr_top_block ( const std::string &  name  )  [protected]

gr_top_block::~gr_top_block (  ) 


Member Function Documentation

void gr_top_block::dump (  ) 

Displays flattened flowgraph edges and block connectivity

virtual void gr_top_block::lock (  )  [virtual]

Lock a flowgraph in preparation for reconfiguration. When an equal number of calls to lock() and unlock() have occurred, the flowgraph will be restarted automatically.

N.B. lock() and unlock() cannot be called from a flowgraph thread (E.g., gr_block::work method) or deadlock will occur when reconfiguration happens.

Reimplemented from gr_hier_block2.

void gr_top_block::run (  ) 

The simple interface to running a flowgraph.

Calls start() then wait(). Used to run a flowgraph that will stop on its own, or to run a flowgraph indefinitely until SIGINT is received.

void gr_top_block::start (  ) 

Start the contained flowgraph. Creates one or more threads to execute the flow graph. Returns to the caller once the threads are created.

void gr_top_block::stop (  ) 

Stop the running flowgraph. Notifies each thread created by the scheduler to shutdown, then returns to caller.

virtual void gr_top_block::unlock (  )  [virtual]

Unlock a flowgraph in preparation for reconfiguration. When an equal number of calls to lock() and unlock() have occurred, the flowgraph will be restarted automatically.

N.B. lock() and unlock() cannot be called from a flowgraph thread (E.g., gr_block::work method) or deadlock will occur when reconfiguration happens.

Reimplemented from gr_hier_block2.

void gr_top_block::wait (  ) 

Wait for a flowgraph to complete. Flowgraphs complete when either (1) all blocks indicate that they are done (typically only when using gr.file_source, or gr.head, or (2) after stop() has been called to request shutdown.


Friends And Related Function Documentation

gr_top_block_sptr gr_make_top_block ( const std::string &  name  )  [friend]


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

Generated on Thu Mar 5 09:03:13 2009 for GNU Radio 3.1.3 by  doxygen 1.5.8