Extended maintenance of Ruby versions 1.8.7 and 1.9.2 ended on July 31, 2014. Read more
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# File dl/lib/dl/func.rb, line 14 def initialize cfunc, argtypes, abi = nil, &block if DL.fiddle? abi ||= Fiddle::Function::DEFAULT if block_given? @cfunc = Class.new(Fiddle::Closure) { define_method(:call, block) }.new(cfunc.ctype, argtypes) else @cfunc = cfunc end @args = argtypes super(@cfunc, @args.reject { |x| x == TYPE_VOID }, cfunc.ctype, abi) else @cfunc = cfunc @stack = Stack.new(argtypes.collect{|ty| ty.abs}) if( @cfunc.ctype < 0 ) @cfunc.ctype = @cfunc.ctype.abs @unsigned = true else @unsigned = false end if block_given? bind(&block) end end end
# File dl/lib/dl/func.rb, line 77 def bind(&block) if DL.fiddle? @cfunc = Class.new(Fiddle::Closure) { def initialize ctype, args, block super(ctype, args) @block = block end def call *args @block.call(*args) end }.new(@cfunc.ctype, @args, block) else if( !block ) raise(RuntimeError, "block must be given.") end if( @cfunc.ptr == 0 ) cb = Proc.new{|*args| ary = @stack.unpack(args) @stack.types.each_with_index{|ty, idx| case ty when TYPE_VOIDP ary[idx] = CPtr.new(ary[idx]) end } r = block.call(*ary) wrap_arg(r, @cfunc.ctype, []) } case @cfunc.calltype when :cdecl @cfunc.ptr = set_cdecl_callback(@cfunc.ctype, @stack.size, &cb) when :stdcall @cfunc.ptr = set_stdcall_callback(@cfunc.ctype, @stack.size, &cb) else raise(RuntimeError, "unsupported calltype: #{@cfunc.calltype}") end if( @cfunc.ptr == 0 ) raise(RuntimeException, "can't bind C function.") end end end end
# File dl/lib/dl/func.rb, line 138 def bind_at_call(&block) bind(&block) end
# File dl/lib/dl/func.rb, line 50 def call(*args, &block) if DL.fiddle? if block_given? args.find { |a| DL::Function === a }.bind_at_call(&block) end super else funcs = [] _args = wrap_args(args, @stack.types, funcs, &block) r = @cfunc.call(@stack.pack(_args)) funcs.each{|f| f.unbind_at_call()} return wrap_result(r) end end
# File dl/lib/dl/func.rb, line 120 def unbind() if( @cfunc.ptr != 0 ) case @cfunc.calltype when :cdecl remove_cdecl_callback(@cfunc.ptr, @cfunc.ctype) when :stdcall remove_stdcall_callback(@cfunc.ptr, @cfunc.ctype) else raise(RuntimeError, "unsupported calltype: #{@cfunc.calltype}") end @cfunc.ptr = 0 end end