1 files changed, 0 insertions, 496 deletions

diff --git a/ext/fiddle/function.c b/ext/fiddle/function.c
deleted file mode 100644
index 5469e09e37..0000000000
--- a/ext/fiddle/function.c
+++ /dev/null
@@ -1,496 +0,0 @@
-#include <fiddle.h>
-#include <ruby/thread.h>
-
-#include <stdbool.h>
-
-#ifdef PRIsVALUE
-# define RB_OBJ_CLASSNAME(obj) rb_obj_class(obj)
-# define RB_OBJ_STRING(obj) (obj)
-#else
-# define PRIsVALUE "s"
-# define RB_OBJ_CLASSNAME(obj) rb_obj_classname(obj)
-# define RB_OBJ_STRING(obj) StringValueCStr(obj)
-#endif
-
-VALUE cFiddleFunction;
-
-#define MAX_ARGS (SIZE_MAX / (sizeof(void *) + sizeof(fiddle_generic)) - 1)
-
-#define Check_Max_Args(name, len) \
-    Check_Max_Args_(name, len, "")
-#define Check_Max_Args_Long(name, len) \
-    Check_Max_Args_(name, len, "l")
-#define Check_Max_Args_(name, len, fmt) \
-    do { \
-        if ((size_t)(len) >= MAX_ARGS) { \
-            rb_raise(rb_eTypeError, \
-                     "%s is so large " \
-                     "that it can cause integer overflow (%"fmt"d)", \
-                     (name), (len)); \
-        } \
-    } while (0)
-
-static void
-deallocate(void *p)
-{
-    ffi_cif *cif = p;
-    if (cif->arg_types) xfree(cif->arg_types);
-    xfree(cif);
-}
-
-static size_t
-function_memsize(const void *p)
-{
-    /* const */ffi_cif *ptr = (ffi_cif *)p;
-    size_t size = 0;
-
-    size += sizeof(*ptr);
-#if !defined(FFI_NO_RAW_API) || !FFI_NO_RAW_API
-    size += ffi_raw_size(ptr);
-#endif
-
-    return size;
-}
-
-const rb_data_type_t function_data_type = {
-    .wrap_struct_name = "fiddle/function",
-    .function = {
-        .dmark = 0,
-        .dfree = deallocate,
-        .dsize = function_memsize
-    },
-    .flags = RUBY_TYPED_FREE_IMMEDIATELY | RUBY_TYPED_WB_PROTECTED,
-};
-
-static VALUE
-allocate(VALUE klass)
-{
-    ffi_cif * cif;
-
-    return TypedData_Make_Struct(klass, ffi_cif, &function_data_type, cif);
-}
-
-VALUE
-rb_fiddle_new_function(VALUE address, VALUE arg_types, VALUE ret_type)
-{
-    VALUE argv[3];
-
-    argv[0] = address;
-    argv[1] = arg_types;
-    argv[2] = ret_type;
-
-    return rb_class_new_instance(3, argv, cFiddleFunction);
-}
-
-static VALUE
-normalize_argument_types(const char *name,
-                         VALUE arg_types,
-                         bool *is_variadic)
-{
-    VALUE normalized_arg_types;
-    int i;
-    int n_arg_types;
-    *is_variadic = false;
-
-    Check_Type(arg_types, T_ARRAY);
-    n_arg_types = RARRAY_LENINT(arg_types);
-    Check_Max_Args(name, n_arg_types);
-
-    normalized_arg_types = rb_ary_new_capa(n_arg_types);
-    for (i = 0; i < n_arg_types; i++) {
-        VALUE arg_type = RARRAY_AREF(arg_types, i);
-        int c_arg_type;
-        arg_type = rb_fiddle_type_ensure(arg_type);
-        c_arg_type = NUM2INT(arg_type);
-        if (c_arg_type == TYPE_VARIADIC) {
-            if (i != n_arg_types - 1) {
-                rb_raise(rb_eArgError,
-                         "Fiddle::TYPE_VARIADIC must be the last argument type: "
-                         "%"PRIsVALUE,
-                         arg_types);
-            }
-            *is_variadic = true;
-            break;
-        }
-        else {
-            (void)INT2FFI_TYPE(c_arg_type); /* raise */
-        }
-        rb_ary_push(normalized_arg_types, INT2FIX(c_arg_type));
-    }
-
-    /* freeze to prevent inconsistency at calling #to_int later */
-    OBJ_FREEZE(normalized_arg_types);
-    return normalized_arg_types;
-}
-
-static VALUE
-initialize(int argc, VALUE argv[], VALUE self)
-{
-    ffi_cif * cif;
-    VALUE ptr, arg_types, ret_type, abi, kwargs;
-    VALUE name = Qnil;
-    VALUE need_gvl = Qfalse;
-    int c_ret_type;
-    bool is_variadic = false;
-    ffi_abi c_ffi_abi;
-    void *cfunc;
-
-    rb_scan_args(argc, argv, "31:", &ptr, &arg_types, &ret_type, &abi, &kwargs);
-    rb_iv_set(self, "@closure", ptr);
-
-    if (!NIL_P(kwargs)) {
-        enum {
-            kw_name,
-            kw_need_gvl,
-            kw_max_,
-        };
-        static ID kw[kw_max_];
-        VALUE args[kw_max_];
-        if (!kw[0]) {
-            kw[kw_name] = rb_intern_const("name");
-            kw[kw_need_gvl] = rb_intern_const("need_gvl");
-        }
-        rb_get_kwargs(kwargs, kw, 0, kw_max_, args);
-        if (args[kw_name] != Qundef) {
-            name = args[kw_name];
-        }
-        if (args[kw_need_gvl] != Qundef) {
-            need_gvl = args[kw_need_gvl];
-        }
-    }
-    rb_iv_set(self, "@name", name);
-    rb_iv_set(self, "@need_gvl", need_gvl);
-
-    ptr = rb_Integer(ptr);
-    cfunc = NUM2PTR(ptr);
-    PTR2NUM(cfunc);
-    c_ffi_abi = NIL_P(abi) ? FFI_DEFAULT_ABI : NUM2INT(abi);
-    abi = INT2FIX(c_ffi_abi);
-    ret_type = rb_fiddle_type_ensure(ret_type);
-    c_ret_type = NUM2INT(ret_type);
-    (void)INT2FFI_TYPE(c_ret_type); /* raise */
-    ret_type = INT2FIX(c_ret_type);
-
-    arg_types = normalize_argument_types("argument types",
-                                         arg_types,
-                                         &is_variadic);
-#ifndef HAVE_FFI_PREP_CIF_VAR
-    if (is_variadic) {
-        rb_raise(rb_eNotImpError,
-                 "ffi_prep_cif_var() is required in libffi "
-                 "for variadic arguments");
-    }
-#endif
-
-    rb_iv_set(self, "@ptr", ptr);
-    rb_iv_set(self, "@argument_types", arg_types);
-    rb_iv_set(self, "@return_type", ret_type);
-    rb_iv_set(self, "@abi", abi);
-    rb_iv_set(self, "@is_variadic", is_variadic ? Qtrue : Qfalse);
-
-    TypedData_Get_Struct(self, ffi_cif, &function_data_type, cif);
-    cif->arg_types = NULL;
-
-    return self;
-}
-
-struct nogvl_ffi_call_args {
-    ffi_cif *cif;
-    void (*fn)(void);
-    void **values;
-    fiddle_generic retval;
-};
-
-static void *
-nogvl_ffi_call(void *ptr)
-{
-    struct nogvl_ffi_call_args *args = ptr;
-
-    ffi_call(args->cif, args->fn, &args->retval, args->values);
-
-    return NULL;
-}
-
-static VALUE
-function_call(int argc, VALUE argv[], VALUE self)
-{
-    struct nogvl_ffi_call_args args = { 0 };
-    fiddle_generic *generic_args;
-    VALUE cfunc;
-    VALUE abi;
-    VALUE arg_types;
-    VALUE cPointer;
-    VALUE is_variadic;
-    VALUE need_gvl;
-    int n_arg_types;
-    int n_fixed_args = 0;
-    int n_call_args = 0;
-    int i;
-    int i_call;
-    VALUE converted_args = Qnil;
-    VALUE alloc_buffer = 0;
-
-    cfunc    = rb_iv_get(self, "@ptr");
-    abi      = rb_iv_get(self, "@abi");
-    arg_types = rb_iv_get(self, "@argument_types");
-    cPointer = rb_const_get(mFiddle, rb_intern("Pointer"));
-    is_variadic = rb_iv_get(self, "@is_variadic");
-    need_gvl = rb_iv_get(self, "@need_gvl");
-
-    n_arg_types = RARRAY_LENINT(arg_types);
-    n_fixed_args = n_arg_types;
-    if (RTEST(is_variadic)) {
-        if (argc < n_arg_types) {
-            rb_error_arity(argc, n_arg_types, UNLIMITED_ARGUMENTS);
-        }
-        if (((argc - n_arg_types) % 2) != 0) {
-            rb_raise(rb_eArgError,
-                     "variadic arguments must be type and value pairs: "
-                     "%"PRIsVALUE,
-                     rb_ary_new_from_values(argc, argv));
-        }
-        n_call_args = n_arg_types + ((argc - n_arg_types) / 2);
-    }
-    else {
-        if (argc != n_arg_types) {
-            rb_error_arity(argc, n_arg_types, n_arg_types);
-        }
-        n_call_args = n_arg_types;
-    }
-    Check_Max_Args("the number of arguments", n_call_args);
-
-    TypedData_Get_Struct(self, ffi_cif, &function_data_type, args.cif);
-
-    if (is_variadic && args.cif->arg_types) {
-        xfree(args.cif->arg_types);
-        args.cif->arg_types = NULL;
-    }
-
-    if (!args.cif->arg_types) {
-        VALUE fixed_arg_types = arg_types;
-        VALUE return_type;
-        int c_return_type;
-        ffi_type *ffi_return_type;
-        ffi_type **ffi_arg_types;
-        ffi_status result;
-
-        arg_types = rb_ary_dup(fixed_arg_types);
-        for (i = n_fixed_args; i < argc; i += 2) {
-          VALUE arg_type = argv[i];
-          int c_arg_type;
-          arg_type = rb_fiddle_type_ensure(arg_type);
-          c_arg_type = NUM2INT(arg_type);
-          (void)INT2FFI_TYPE(c_arg_type); /* raise */
-          rb_ary_push(arg_types, INT2FIX(c_arg_type));
-        }
-
-        return_type = rb_iv_get(self, "@return_type");
-        c_return_type = FIX2INT(return_type);
-        ffi_return_type = INT2FFI_TYPE(c_return_type);
-
-        ffi_arg_types = xcalloc(n_call_args + 1, sizeof(ffi_type *));
-        for (i_call = 0; i_call < n_call_args; i_call++) {
-            VALUE arg_type;
-            int c_arg_type;
-            arg_type = RARRAY_AREF(arg_types, i_call);
-            c_arg_type = FIX2INT(arg_type);
-            ffi_arg_types[i_call] = INT2FFI_TYPE(c_arg_type);
-        }
-        ffi_arg_types[i_call] = NULL;
-
-        if (is_variadic) {
-#ifdef HAVE_FFI_PREP_CIF_VAR
-            result = ffi_prep_cif_var(args.cif,
-                                      FIX2INT(abi),
-                                      n_fixed_args,
-                                      n_call_args,
-                                      ffi_return_type,
-                                      ffi_arg_types);
-#else
-            /* This code is never used because ffi_prep_cif_var()
-             * availability check is done in #initialize. */
-            result = FFI_BAD_TYPEDEF;
-#endif
-        }
-        else {
-            result = ffi_prep_cif(args.cif,
-                                  FIX2INT(abi),
-                                  n_call_args,
-                                  ffi_return_type,
-                                  ffi_arg_types);
-        }
-        if (result != FFI_OK) {
-            xfree(ffi_arg_types);
-            args.cif->arg_types = NULL;
-            rb_raise(rb_eRuntimeError, "error creating CIF %d", result);
-        }
-    }
-
-    generic_args = ALLOCV(alloc_buffer,
-                          sizeof(fiddle_generic) * n_call_args +
-                          sizeof(void *) * (n_call_args + 1));
-    args.values = (void **)((char *)generic_args +
-                            sizeof(fiddle_generic) * n_call_args);
-
-    for (i = 0, i_call = 0;
-         i < argc && i_call < n_call_args;
-         i++, i_call++) {
-        VALUE arg_type;
-        int c_arg_type;
-        VALUE original_src;
-        VALUE src;
-        arg_type = RARRAY_AREF(arg_types, i_call);
-        c_arg_type = FIX2INT(arg_type);
-        if (i >= n_fixed_args) {
-            i++;
-        }
-        src = argv[i];
-
-        if (c_arg_type == TYPE_VOIDP) {
-            if (NIL_P(src)) {
-                src = INT2FIX(0);
-            }
-            else if (cPointer != CLASS_OF(src)) {
-                src = rb_funcall(cPointer, rb_intern("[]"), 1, src);
-                if (NIL_P(converted_args)) {
-                    converted_args = rb_ary_new();
-                }
-                rb_ary_push(converted_args, src);
-            }
-            src = rb_Integer(src);
-        }
-
-        original_src = src;
-        VALUE2GENERIC(c_arg_type, src, &generic_args[i_call]);
-        if (src != original_src) {
-            if (NIL_P(converted_args)) {
-                converted_args = rb_ary_new();
-            }
-            rb_ary_push(converted_args, src);
-        }
-        args.values[i_call] = (void *)&generic_args[i_call];
-    }
-    args.values[i_call] = NULL;
-    args.fn = (void(*)(void))NUM2PTR(cfunc);
-
-    if (RTEST(need_gvl)) {
-        ffi_call(args.cif, args.fn, &(args.retval), args.values);
-    }
-    else {
-        (void)rb_thread_call_without_gvl(nogvl_ffi_call, &args, 0, 0);
-    }
-
-    {
-        int errno_keep = errno;
-#if defined(_WIN32)
-        DWORD error = WSAGetLastError();
-        int socket_error = WSAGetLastError();
-        rb_funcall(mFiddle, rb_intern("win32_last_error="), 1,
-                   ULONG2NUM(error));
-        rb_funcall(mFiddle, rb_intern("win32_last_socket_error="), 1,
-                   INT2NUM(socket_error));
-#endif
-        rb_funcall(mFiddle, rb_intern("last_error="), 1, INT2NUM(errno_keep));
-    }
-
-    ALLOCV_END(alloc_buffer);
-
-    return GENERIC2VALUE(rb_iv_get(self, "@return_type"), args.retval);
-}
-
-void
-Init_fiddle_function(void)
-{
-    /*
-     * Document-class: Fiddle::Function
-     *
-     * == Description
-     *
-     * A representation of a C function
-     *
-     * == Examples
-     *
-     * === 'strcpy'
-     *
-     *   @libc = Fiddle.dlopen "/lib/libc.so.6"
-     *	    #=> #<Fiddle::Handle:0x00000001d7a8d8>
-     *   f = Fiddle::Function.new(
-     *     @libc['strcpy'],
-     *     [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP],
-     *     Fiddle::TYPE_VOIDP)
-     *	    #=> #<Fiddle::Function:0x00000001d8ee00>
-     *   buff = "000"
-     *	    #=> "000"
-     *   str = f.call(buff, "123")
-     *	    #=> #<Fiddle::Pointer:0x00000001d0c380 ptr=0x000000018a21b8 size=0 free=0x00000000000000>
-     *   str.to_s
-     *   => "123"
-     *
-     * === ABI check
-     *
-     *   @libc = Fiddle.dlopen "/lib/libc.so.6"
-     *	    #=> #<Fiddle::Handle:0x00000001d7a8d8>
-     *   f = Fiddle::Function.new(@libc['strcpy'], [TYPE_VOIDP, TYPE_VOIDP], TYPE_VOIDP)
-     *	    #=> #<Fiddle::Function:0x00000001d8ee00>
-     *   f.abi == Fiddle::Function::DEFAULT
-     *	    #=> true
-     */
-    cFiddleFunction = rb_define_class_under(mFiddle, "Function", rb_cObject);
-
-    /*
-     * Document-const: DEFAULT
-     *
-     * Default ABI
-     *
-     */
-    rb_define_const(cFiddleFunction, "DEFAULT", INT2NUM(FFI_DEFAULT_ABI));
-
-#ifdef HAVE_CONST_FFI_STDCALL
-    /*
-     * Document-const: STDCALL
-     *
-     * FFI implementation of WIN32 stdcall convention
-     *
-     */
-    rb_define_const(cFiddleFunction, "STDCALL", INT2NUM(FFI_STDCALL));
-#endif
-
-    rb_define_alloc_func(cFiddleFunction, allocate);
-
-    /*
-     * Document-method: call
-     *
-     * Calls the constructed Function, with +args+.
-     * Caller must ensure the underlying function is called in a
-     * thread-safe manner if running in a multi-threaded process.
-     *
-     * Note that it is not thread-safe to use this method to
-     * directly or indirectly call many Ruby C-extension APIs unless
-     * you don't pass +need_gvl: true+ to Fiddle::Function#new.
-     *
-     * For an example see Fiddle::Function
-     *
-     */
-    rb_define_method(cFiddleFunction, "call", function_call, -1);
-
-    /*
-     * Document-method: new
-     * call-seq: new(ptr,
-     *               args,
-     *               ret_type,
-     *               abi = DEFAULT,
-     *               name: nil,
-     *               need_gvl: false)
-     *
-     * Constructs a Function object.
-     * * +ptr+ is a referenced function, of a Fiddle::Handle
-     * * +args+ is an Array of arguments, passed to the +ptr+ function
-     * * +ret_type+ is the return type of the function
-     * * +abi+ is the ABI of the function
-     * * +name+ is the name of the function
-     * * +need_gvl+ is whether GVL is needed to call the function
-     *
-     */
-    rb_define_method(cFiddleFunction, "initialize", initialize, -1);
-}
-/* vim: set noet sws=4 sw=4: */