On Tue, 5 Oct 2010, Schwab,Wilhelm K wrote:
yes, that's what the link describes. The open question is whether anyone has
successfully done that with 15+ arguments?
It works up to 128 arguments. But why don't you try it yourself?
Levente
________________________________________
From: [email protected]
[[email protected]] On Behalf Of Levente Uzonyi
[[email protected]]
Sent: Tuesday, October 05, 2010 10:26 PM
To: [email protected]
Subject: Re: [Pharo-project] FFI number of arguments
On Tue, 5 Oct 2010, Schwab,Wilhelm K wrote:
Hello all,
I have been bumping into some functions with large numbers of arguments. One
in particular would be best handled in the image if at all possible. The
following might be the answer:
http://thread.gmane.org/gmane.comp.lang.smalltalk.squeak.general/98538/focus=98543
Have any of you done this with >15 (or whatever the cutoff is) arguments?
You can create your own function object and invoke it with an array.
Here's an fprintf example on windows:
fprintf := ExternalLibraryFunction
name: 'fprintf'
module: 'msvcrt.dll'
callType: ExternalFunction callTypeCDecl
returnType: ExternalType signedLong
argumentTypes: {
(ExternalType structTypeNamed: #FILE) asPointerType.
ExternalType string.
ExternalType signedLong }.
file := Stdio default fopenWith: 'test.txt' with: 'w'.
fprintf invokeWithArguments: { file. 'Your number is %d.'. 42 }.
Stdio default fcloseWith: file.
Levente
P.S.: Note that you need the FILE and Stdio classes to run this example.
Bill
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