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Re: SHMMAP and IDL_IDLBridge [message #63153 is a reply to message #63082]

Tue, 28 October 2008 20:17

Robbie
Messages: 165
Registered: February 2006

Senior Member

You should be able to map a structure using SHMMAP, however, there are
a number of limitations which make it nearly useless:

1) You cannot have pointers or objects in your structure. This makes
sending variable size datasets very difficult
2) You cannot use strings. Instead you must create a fixed width
bytarr() and cast it to and from a string.

An alternative solution is to use CMSVLIB written by Craig Markwardt
http://www.physics.wisc.edu/~craigm/idl/
Using this package you should be able to convert any combination of
IDL variables into a bytarr() which can then be copied to shared
memory. This might be notably slower than the above solution but it is
more flexible.

Personally, I have taken a backwards step from using SHMMAP. If I
really need threads, then I choose a language which supports them.

Regards,

Robbie

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		SHMMAP and IDL_IDLBridge By: Dan[1] on Tue, 28 October 2008 11:11
		Re: SHMMAP and IDL_IDLBridge By: Robbie on Tue, 28 October 2008 20:17

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