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weissi/FFPointer-Bridging-Header.h

Last active August 29, 2015 14:07
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FFPointer-Bridging-Header.h
int invoke_fun(int (*f)(void));
Raw
invoke_fun.c
#include "invoke_fun.h"
int invoke_fun(int (*f)(void)) {
return f();
}
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invoke_fun.h
#ifndef __SwiftTestApp__invoke_fun__
#define __SwiftTestApp__invoke_fun__
int invoke_fun(int (*f)(void));
#endif
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main.swift
import Darwin
import Foundation
let handle = dlopen("/usr/lib/libc.dylib", RTLD_NOW)
let sym : UnsafeMutablePointer<Void> = dlsym(handle, "random")
let rawPointer = UnsafeMutablePointer<() -> Int32>(sym)
let opaquePtr : COpaquePointer = COpaquePointer(rawPointer)
let cFunPointer = CFunctionPointer<() -> Int32>(opaquePtr)
println(invoke_fun(cFunPointer))
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