From bda37095ca990568069aaf07dc6b3fa8ceebc327 Mon Sep 17 00:00:00 2001 From: ttate Date: Fri, 4 Feb 2005 13:35:37 +0000 Subject: added new files. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@7883 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- ext/dl/cfunc.c | 512 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 512 insertions(+) create mode 100644 ext/dl/cfunc.c (limited to 'ext/dl/cfunc.c') diff --git a/ext/dl/cfunc.c b/ext/dl/cfunc.c new file mode 100644 index 0000000000..6dcca5c6db --- /dev/null +++ b/ext/dl/cfunc.c @@ -0,0 +1,512 @@ +/* -*- C -*- + * $Id$ + */ + +#include +#include +#include "dl.h" + +VALUE rb_cDLCFunc; + +static ID id_last_error; + +static VALUE +rb_dl_get_last_error(VALUE self) +{ + return rb_thread_local_aref(rb_thread_current(), id_last_error); +} + +static VALUE +rb_dl_set_last_error(VALUE self, VALUE val) +{ + rb_thread_local_aset(rb_thread_current(), id_last_error, val); + return Qnil; +} + +#if defined(HAVE_WINDOWS_H) +#include +static ID id_win32_last_error; + +static VALUE +rb_dl_get_win32_last_error(VALUE self) +{ + return rb_thread_local_aref(rb_thread_current(), id_win32_last_error); +} + +static VALUE +rb_dl_set_win32_last_error(VALUE self, VALUE val) +{ + rb_thread_local_aset(rb_thread_current(), id_win32_last_error, val); + return Qnil; +} +#endif + + +void +dlcfunc_free(struct cfunc_data *data) +{ + if( data->name ){ + xfree(data->name); + } + xfree(data); +} + +VALUE +rb_dlcfunc_new(void (*func)(), int type, const char *name, ID calltype) +{ + VALUE val; + struct cfunc_data *data; + + rb_secure(4); + if( func ){ + val = Data_Make_Struct(rb_cDLCFunc, struct cfunc_data, 0, dlcfunc_free, data); + data->ptr = func; + data->name = name ? strdup(name) : NULL; + data->type = type; + data->calltype = calltype; + } + else{ + val = Qnil; + } + + return val; +} + +void * +rb_dlcfunc2ptr(VALUE val) +{ + struct cfunc_data *data; + void * func; + + if( rb_obj_is_kind_of(val, rb_cDLCFunc) ){ + Data_Get_Struct(val, struct cfunc_data, data); + func = data->ptr; + } + else if( val == Qnil ){ + func = NULL; + } + else{ + rb_raise(rb_eTypeError, "DL::CFunc was expected"); + } + + return func; +} + +VALUE +rb_dlcfunc_s_allocate(VALUE klass) +{ + VALUE obj; + struct cfunc_data *data; + + obj = Data_Make_Struct(klass, struct cfunc_data, 0, dlcfunc_free, data); + data->ptr = 0; + data->name = 0; + data->type = 0; + data->calltype = CFUNC_CDECL; + + return obj; +} + +VALUE +rb_dlcfunc_initialize(int argc, VALUE argv[], VALUE self) +{ + VALUE addr, name, type, calltype; + struct cfunc_data *data; + void *saddr; + const char *sname; + + rb_scan_args(argc, argv, "13", &addr, &type, &name, &calltype); + + saddr = (void*)(NUM2PTR(rb_Integer(addr))); + sname = NIL_P(name) ? NULL : StringValuePtr(name); + + Data_Get_Struct(self, struct cfunc_data, data); + if( data->name ) xfree(data->name); + data->ptr = saddr; + data->name = sname ? strdup(sname) : 0; + data->type = (type == Qnil) ? DLTYPE_VOID : NUM2INT(type); + data->calltype = (calltype == Qnil) ? CFUNC_CDECL : SYM2ID(calltype); + + return Qnil; +} + +VALUE +rb_dlcfunc_name(VALUE self) +{ + struct cfunc_data *cfunc; + + Data_Get_Struct(self, struct cfunc_data, cfunc); + return cfunc->name ? rb_tainted_str_new2(cfunc->name) : Qnil; +} + +VALUE +rb_dlcfunc_ctype(VALUE self) +{ + struct cfunc_data *cfunc; + + Data_Get_Struct(self, struct cfunc_data, cfunc); + return INT2NUM(cfunc->type); +} + +VALUE +rb_dlcfunc_set_ctype(VALUE self, VALUE ctype) +{ + struct cfunc_data *cfunc; + + Data_Get_Struct(self, struct cfunc_data, cfunc); + cfunc->type = NUM2INT(ctype); + return ctype; +} + +VALUE +rb_dlcfunc_calltype(VALUE self) +{ + struct cfunc_data *cfunc; + + Data_Get_Struct(self, struct cfunc_data, cfunc); + return ID2SYM(cfunc->calltype); +} + +VALUE +rb_dlcfunc_set_calltype(VALUE self, VALUE sym) +{ + struct cfunc_data *cfunc; + + Data_Get_Struct(self, struct cfunc_data, cfunc); + cfunc->calltype = SYM2ID(sym); + return sym; +} + + +VALUE +rb_dlcfunc_ptr(VALUE self) +{ + struct cfunc_data *cfunc; + + Data_Get_Struct(self, struct cfunc_data, cfunc); + return PTR2NUM(cfunc->ptr); +} + +VALUE +rb_dlcfunc_set_ptr(VALUE self, VALUE addr) +{ + struct cfunc_data *cfunc; + + Data_Get_Struct(self, struct cfunc_data, cfunc); + cfunc->ptr = NUM2PTR(addr); + + return Qnil; +} + +VALUE +rb_dlcfunc_inspect(VALUE self) +{ + VALUE val; + char *str; + int str_size; + struct cfunc_data *cfunc; + + Data_Get_Struct(self, struct cfunc_data, cfunc); + + str_size = (cfunc->name ? strlen(cfunc->name) : 0) + 100; + str = ruby_xmalloc(str_size); + snprintf(str, str_size - 1, + "#", + cfunc, + cfunc->ptr, + cfunc->type, + cfunc->name ? cfunc->name : ""); + val = rb_tainted_str_new2(str); + ruby_xfree(str); + + return val; +} + +#if defined(__GNUC__) +# define DECL_FUNC(f,ret,args,calltype) ret (__attribute__((calltype)) *f)(args) +/* # define DECL_FUNC(f,ret,args,calltype) ret (*f)(args) */ +#else +# error "unsupported compiler." +#endif + +#define CALL_CASE switch( RARRAY(ary)->len ){ \ + CASE(0); break; \ + CASE(1); break; CASE(2); break; CASE(3); break; CASE(4); break; CASE(5); break; \ + CASE(6); break; CASE(7); break; CASE(8); break; CASE(9); break; CASE(10);break; \ + CASE(11);break; CASE(12);break; CASE(13);break; CASE(14);break; CASE(15);break; \ + CASE(16);break; CASE(17);break; CASE(18);break; CASE(19);break; CASE(20);break; \ + default: rb_raise(rb_eArgError, "too many arguments."); \ +} + + +VALUE +rb_dlcfunc_call(VALUE self, VALUE ary) +{ + struct cfunc_data *cfunc; + int i; + DLSTACK_TYPE stack[DLSTACK_SIZE]; + VALUE result = Qnil; + + rb_secure_update(self); + + memset(stack, 0, sizeof(DLSTACK_TYPE) * DLSTACK_SIZE); + Check_Type(ary, T_ARRAY); + + Data_Get_Struct(self, struct cfunc_data, cfunc); + + if( cfunc->ptr == 0 ){ + rb_raise(rb_eDLError, "can't call null-function."); + return Qnil; + } + + for( i = 0; i < RARRAY(ary)->len; i++ ){ + if( i >= DLSTACK_SIZE ){ + rb_raise(rb_eDLError, "too many arguments (stack overflow)"); + } + stack[i] = NUM2LONG(RARRAY(ary)->ptr[i]); + } + + /* calltype == CFUNC_CDECL */ + if( cfunc->calltype == CFUNC_CDECL ){ + switch( cfunc->type ){ + case DLTYPE_VOID: +#define CASE(n) case n: { \ + DECL_FUNC(f,void,DLSTACK_PROTO##n,cdecl) = cfunc->ptr; \ + f(DLSTACK_ARGS##n(stack)); \ + result = Qnil; \ +} + CALL_CASE; +#undef CASE + break; + case DLTYPE_VOIDP: +#define CASE(n) case n: { \ + DECL_FUNC(f,void*,DLSTACK_PROTO##n,cdecl) = cfunc->ptr; \ + void * ret; \ + ret = f(DLSTACK_ARGS##n(stack)); \ + result = PTR2NUM(ret); \ +} + CALL_CASE; +#undef CASE + break; + case DLTYPE_CHAR: +#define CASE(n) case n: { \ + DECL_FUNC(f,char,DLSTACK_PROTO##n,cdecl) = cfunc->ptr; \ + char ret; \ + ret = f(DLSTACK_ARGS##n(stack)); \ + result = CHR2FIX(ret); \ +} + CALL_CASE; +#undef CASE + break; + case DLTYPE_SHORT: +#define CASE(n) case n: { \ + DECL_FUNC(f,short,DLSTACK_PROTO##n,cdecl) = cfunc->ptr; \ + short ret; \ + ret = f(DLSTACK_ARGS##n(stack)); \ + result = INT2NUM((int)ret); \ +} + CALL_CASE; +#undef CASE + break; + case DLTYPE_INT: +#define CASE(n) case n: { \ + DECL_FUNC(f,int,DLSTACK_PROTO##n,cdecl) = cfunc->ptr; \ + int ret; \ + ret = f(DLSTACK_ARGS##n(stack)); \ + result = INT2NUM(ret); \ +} + CALL_CASE; +#undef CASE + break; + case DLTYPE_LONG: +#define CASE(n) case n: { \ + DECL_FUNC(f,long,DLSTACK_PROTO##n,cdecl) = cfunc->ptr; \ + long ret; \ + ret = f(DLSTACK_ARGS##n(stack)); \ + result = LONG2NUM(ret); \ +} + CALL_CASE; +#undef CASE + break; +#if HAVE_LONG_LONG /* used in ruby.h */ + case DLTYPE_LONG_LONG: +#define CASE(n) case n: { \ + DECL_FUNC(f,long long,DLSTACK_PROTO,cdecl) = cfunc->ptr; \ + LONG_LONG ret; \ + ret = f(DLSTACK_ARGS(stack)); \ + result = LL2NUM(ret); \ +} + CALL_CASE; +#undef CASE + break; +#endif + case DLTYPE_FLOAT: +#define CASE(n) case n: { \ + DECL_FUNC(f,float,DLSTACK_PROTO,cdecl) = cfunc->ptr; \ + float ret; \ + ret = f(DLSTACK_ARGS(stack)); \ + result = rb_float_new(ret); \ +} + CALL_CASE; +#undef CASE + break; + case DLTYPE_DOUBLE: +#define CASE(n) case n: { \ + DECL_FUNC(f,double,DLSTACK_PROTO,cdecl) = cfunc->ptr; \ + double ret; \ + ret = f(DLSTACK_ARGS(stack)); \ + result = rb_float_new(ret); \ +} + CALL_CASE; +#undef CASE + break; + default: + rb_raise(rb_eDLTypeError, "unknown type %d", cfunc->type); + } + } + else if( cfunc->calltype == CFUNC_STDCALL ){ + /* calltype == CFUNC_STDCALL */ + switch( cfunc->type ){ + case DLTYPE_VOID: +#define CASE(n) case n: { \ + DECL_FUNC(f,void,DLSTACK_PROTO##n,stdcall) = cfunc->ptr; \ + f(DLSTACK_ARGS##n(stack)); \ + result = Qnil; \ +} + CALL_CASE; +#undef CASE + break; + case DLTYPE_VOIDP: +#define CASE(n) case n: { \ + DECL_FUNC(f,void*,DLSTACK_PROTO##n,stdcall) = cfunc->ptr; \ + void * ret; \ + ret = f(DLSTACK_ARGS##n(stack)); \ + result = PTR2NUM(ret); \ +} + CALL_CASE; +#undef CASE + break; + case DLTYPE_CHAR: +#define CASE(n) case n: { \ + DECL_FUNC(f,char,DLSTACK_PROTO##n,stdcall) = cfunc->ptr; \ + char ret; \ + ret = f(DLSTACK_ARGS##n(stack)); \ + result = CHR2FIX(ret); \ +} + CALL_CASE; +#undef CASE + break; + case DLTYPE_SHORT: +#define CASE(n) case n: { \ + DECL_FUNC(f,short,DLSTACK_PROTO##n,stdcall) = cfunc->ptr; \ + short ret; \ + ret = f(DLSTACK_ARGS##n(stack)); \ + result = INT2NUM((int)ret); \ +} + CALL_CASE; +#undef CASE + break; + case DLTYPE_INT: +#define CASE(n) case n: { \ + DECL_FUNC(f,int,DLSTACK_PROTO##n,stdcall) = cfunc->ptr; \ + int ret; \ + ret = f(DLSTACK_ARGS##n(stack)); \ + result = INT2NUM(ret); \ +} + CALL_CASE; +#undef CASE + break; + case DLTYPE_LONG: +#define CASE(n) case n: { \ + DECL_FUNC(f,long,DLSTACK_PROTO##n,stdcall) = cfunc->ptr; \ + long ret; \ + ret = f(DLSTACK_ARGS##n(stack)); \ + result = LONG2NUM(ret); \ +} + CALL_CASE; +#undef CASE + break; +#if HAVE_LONG_LONG /* used in ruby.h */ + case DLTYPE_LONG_LONG: +#define CASE(n) case n: { \ + DECL_FUNC(f,long long,DLSTACK_PROTO,stdcall) = cfunc->ptr; \ + LONG_LONG ret; \ + ret = f(DLSTACK_ARGS(stack)); \ + result = LL2NUM(ret); \ +} + CALL_CASE; +#undef CASE + break; +#endif + case DLTYPE_FLOAT: +#define CASE(n) case n: { \ + DECL_FUNC(f,float,DLSTACK_PROTO,stdcall) = cfunc->ptr; \ + float ret; \ + ret = f(DLSTACK_ARGS(stack)); \ + result = rb_float_new(ret); \ +} + CALL_CASE; +#undef CASE + break; + case DLTYPE_DOUBLE: +#define CASE(n) case n: { \ + DECL_FUNC(f,double,DLSTACK_PROTO,stdcall) = cfunc->ptr; \ + double ret; \ + ret = f(DLSTACK_ARGS(stack)); \ + result = rb_float_new(ret); \ +} + CALL_CASE; +#undef CASE + break; + default: + rb_raise(rb_eDLTypeError, "unknown type %d", cfunc->type); + } + } + else{ + rb_raise(rb_eDLError, "unsupported call type: %x", cfunc->calltype); + } + + rb_dl_set_last_error(self, INT2NUM(errno)); +#if defined(HAVE_WINDOWS_H) + rb_dl_set_win32_last_error(self, INT2NUM(GetLastError())); +#endif + + return result; +} + +VALUE +rb_dlcfunc_to_i(VALUE self) +{ + struct cfunc_data *cfunc; + + Data_Get_Struct(self, struct cfunc_data, cfunc); + return PTR2NUM(cfunc->ptr); +} + +void +Init_dlcfunc() +{ + id_last_error = rb_intern("__DL2_LAST_ERROR__"); +#if defined(HAVE_WINDOWS_H) + id_win32_last_error = rb_intern("__DL2_WIN32_LAST_ERROR__"); +#endif + rb_cDLCFunc = rb_define_class_under(rb_mDL, "CFunc", rb_cObject); + rb_define_alloc_func(rb_cDLCFunc, rb_dlcfunc_s_allocate); + rb_define_module_function(rb_cDLCFunc, "last_error", rb_dl_get_last_error, 0); +#if defined(HAVE_WINDOWS_H) + rb_define_module_function(rb_cDLCFunc, "win32_last_error", rb_dl_get_win32_last_error, 0); +#endif + rb_define_method(rb_cDLCFunc, "initialize", rb_dlcfunc_initialize, -1); + rb_define_method(rb_cDLCFunc, "call", rb_dlcfunc_call, 1); + rb_define_method(rb_cDLCFunc, "[]", rb_dlcfunc_call, 1); + rb_define_method(rb_cDLCFunc, "name", rb_dlcfunc_name, 0); + rb_define_method(rb_cDLCFunc, "ctype", rb_dlcfunc_ctype, 0); + rb_define_method(rb_cDLCFunc, "ctype=", rb_dlcfunc_set_ctype, 1); + rb_define_method(rb_cDLCFunc, "calltype", rb_dlcfunc_calltype, 0); + rb_define_method(rb_cDLCFunc, "calltype=", rb_dlcfunc_set_calltype, 1); + rb_define_method(rb_cDLCFunc, "ptr", rb_dlcfunc_ptr, 0); + rb_define_method(rb_cDLCFunc, "ptr=", rb_dlcfunc_set_ptr, 1); + rb_define_method(rb_cDLCFunc, "inspect", rb_dlcfunc_inspect, 0); + rb_define_method(rb_cDLCFunc, "to_s", rb_dlcfunc_inspect, 0); + rb_define_method(rb_cDLCFunc, "to_i", rb_dlcfunc_to_i, 0); +} -- cgit v1.2.3