Libffi

libffi is a foreign function interface library. It provides a C programming language interface for calling natively compiled functions given information about the target function at run time instead of compile time. It also implements the opposite functionality: libffi can produce a pointer to a function that can accept and decode any combination of arguments defined at run time.

libffi is most often used as a bridging technology between compiled and interpreted language implementations. libffi may also be used to implement plug-ins, where the plug-in's function signatures are not known at the time of creating the host application.

Notable users include Python, Haskell, Dalvik, F-Script, PyPy, PyObjC, RubyCocoa, JRuby, Rubinius, MacRuby, gcj, GNU Smalltalk, IcedTea, Cycript, Pawn, Squeak, Java Native Access, Racket, Embeddable Common Lisp and Mozilla.

On Mac OS X libffi is commonly used with BridgeSupport, which provides programming language neutral descriptions of framework interfaces, and Nu which binds direct Objective-C access from Lisp.

libffi has been widely ported and is released under a MIT license.

Read more about LibffiHistory, Adoption

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