Module: Weave::FFI

The FFI module ecapsulates all the native function calls in a single convenient location. I try to keep the wrappers to native functions as thin as possible and implement everything that possible in Ruby.

So you probably shouldn‘t be using these methods …

Methods

define_method define_singleton_method dlclose dlopen dlsym

Public Class methods

define_method(p1, p2, p3, p4)

Weave::FFI.define_method(klass, method_name, symbol, arity)

Define a native ruby method named `method_name` on class `klass`. The method is implemented by `symbol` and takes `arity` arguments.

This is a wrapper around the native `rb_define_method` function. It shouldn‘t be used directly, use the Weave::rb_define_method function instead, it‘s much more convenient.

define_singleton_method(p1, p2, p3, p4)

Weave::FFI.define_singleton_method(object, method_name, symbol, arity)

Define a native ruby singleton method named `method_name` on instance `object`. The method is implemented by `symbol` and takes `arity` arguments.

This is a wrapper around the native `rb_define_singleton_method` function. It shouldn‘t be used directly, use the Weave::rb_define_singleton_method function instead, it‘s much more convenient.

dlclose(p1)

Weave::FFI.dlclose(handle)

close the library indicated by `handle`

dlopen(p1)

Weave::FFI.dlopen(lib_name)

try to open the indicated library. Wrapper around `dlopen`

dlsym(p1, p2)

Weave::FFI.dlsym(library_handle, sym_name)

retrieve the named symbol from the library indicated by `library_handle`. This is a wrapper around the native `dlsym` function.