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astPutChannelData
-
Store arbitrary data to be passed to a source or sink function
- Description:
- This function stores a supplied arbitrary pointer in the Channel.
When a source or sink function is invoked by the Channel, the
invoked function can use the astChannelData macro to retrieve the
pointer. This provides a thread-safe alternative to passing file
descriptors, etc, via global static variables.
- Synopsis:
- void astPutChannelData( AstChannel
this, void
data )
- Parameters:
-
this
-
Pointer to the Channel.
-
data
-
A pointer to be made available to the source and sink functions
via the astChannelData macro. May be NULL.
- Class Applicability:
-
Channel
-
All Channels have this function.
- Notes:
- This routine is not available in the Fortran 77 interface to
the AST library.
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Up: AST Function Descriptions
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AST A Library for Handling World Coordinate Systems in Astronomy
Starlink User Note 211
R.F. Warren-Smith & D.S. Berry
24th May 2011
E-mail:ussc@star.rl.ac.uk
Copyright (C) 2009 Science \& Technology Facilities Council