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path: root/trunk/ext/dl/cptr.c
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Diffstat (limited to 'trunk/ext/dl/cptr.c')
-rw-r--r--trunk/ext/dl/cptr.c482
1 files changed, 0 insertions, 482 deletions
diff --git a/trunk/ext/dl/cptr.c b/trunk/ext/dl/cptr.c
deleted file mode 100644
index 7487b0cf55..0000000000
--- a/trunk/ext/dl/cptr.c
+++ /dev/null
@@ -1,482 +0,0 @@
-/* -*- C -*-
- * $Id$
- */
-
-#include <ruby/ruby.h>
-#include <ruby/io.h>
-#include <ctype.h>
-#include "dl.h"
-
-VALUE rb_cDLCPtr;
-
-static ID id_to_ptr;
-
-static void
-dlptr_free(struct ptr_data *data)
-{
- if (data->ptr) {
- if (data->free) {
- (*(data->free))(data->ptr);
- }
- }
-}
-
-static void
-dlptr_mark(struct ptr_data *data)
-{
-}
-
-void
-dlptr_init(VALUE val)
-{
- struct ptr_data *data;
-
- Data_Get_Struct(val, struct ptr_data, data);
- OBJ_TAINT(val);
-}
-
-VALUE
-rb_dlptr_new2(VALUE klass, void *ptr, long size, freefunc_t func)
-{
- struct ptr_data *data;
- VALUE val;
-
- rb_secure(4);
- val = Data_Make_Struct(klass, struct ptr_data,
- 0, dlptr_free, data);
- data->ptr = ptr;
- data->free = func;
- data->size = size;
- dlptr_init(val);
-
- return val;
-}
-
-VALUE
-rb_dlptr_new(void *ptr, long size, freefunc_t func)
-{
- return rb_dlptr_new2(rb_cDLCPtr, ptr, size, func);
-}
-
-VALUE
-rb_dlptr_malloc(long size, freefunc_t func)
-{
- void *ptr;
-
- rb_secure(4);
- ptr = ruby_xmalloc((size_t)size);
- memset(ptr,0,(size_t)size);
- return rb_dlptr_new(ptr, size, func);
-}
-
-void *
-rb_dlptr2cptr(VALUE val)
-{
- struct ptr_data *data;
- void *ptr;
-
- if (rb_obj_is_kind_of(val, rb_cDLCPtr)) {
- Data_Get_Struct(val, struct ptr_data, data);
- ptr = data->ptr;
- }
- else if (val == Qnil) {
- ptr = NULL;
- }
- else{
- rb_raise(rb_eTypeError, "DL::PtrData was expected");
- }
-
- return ptr;
-}
-
-static VALUE
-rb_dlptr_s_allocate(VALUE klass)
-{
- VALUE obj;
- struct ptr_data *data;
-
- rb_secure(4);
- obj = Data_Make_Struct(klass, struct ptr_data, dlptr_mark, dlptr_free, data);
- data->ptr = 0;
- data->size = 0;
- data->free = 0;
-
- return obj;
-}
-
-static VALUE
-rb_dlptr_initialize(int argc, VALUE argv[], VALUE self)
-{
- VALUE ptr, sym, size;
- struct ptr_data *data;
- void *p = NULL;
- freefunc_t f = NULL;
- long s = 0;
-
- switch (rb_scan_args(argc, argv, "12", &ptr, &size, &sym)) {
- case 1:
- p = (void*)(NUM2PTR(rb_Integer(ptr)));
- break;
- case 2:
- p = (void*)(NUM2PTR(rb_Integer(ptr)));
- s = NUM2LONG(size);
- break;
- case 3:
- p = (void*)(NUM2PTR(rb_Integer(ptr)));
- s = NUM2LONG(size);
- f = NIL_P(sym) ? NULL : RCFUNC_DATA(sym)->ptr;
- break;
- default:
- rb_bug("rb_dlptr_initialize");
- }
-
- if (p) {
- Data_Get_Struct(self, struct ptr_data, data);
- if (data->ptr && data->free) {
- /* Free previous memory. Use of inappropriate initialize may cause SEGV. */
- (*(data->free))(data->ptr);
- }
- data->ptr = p;
- data->size = s;
- data->free = f;
- }
-
- return Qnil;
-}
-
-static VALUE
-rb_dlptr_s_malloc(int argc, VALUE argv[], VALUE klass)
-{
- VALUE size, sym, obj;
- int s;
- freefunc_t f;
-
- switch (rb_scan_args(argc, argv, "11", &size, &sym)) {
- case 1:
- s = NUM2LONG(size);
- f = NULL;
- break;
- case 2:
- s = NUM2LONG(size);
- f = RCFUNC_DATA(sym)->ptr;
- break;
- default:
- rb_bug("rb_dlptr_s_malloc");
- }
-
- obj = rb_dlptr_malloc(s,f);
-
- return obj;
-}
-
-VALUE
-rb_dlptr_to_i(VALUE self)
-{
- struct ptr_data *data;
-
- Data_Get_Struct(self, struct ptr_data, data);
- return PTR2NUM(data->ptr);
-}
-
-VALUE
-rb_dlptr_to_value(VALUE self)
-{
- struct ptr_data *data;
- Data_Get_Struct(self, struct ptr_data, data);
- return (VALUE)(data->ptr);
-}
-
-VALUE
-rb_dlptr_ptr(VALUE self)
-{
- struct ptr_data *data;
-
- Data_Get_Struct(self, struct ptr_data, data);
- return rb_dlptr_new(*((void**)(data->ptr)),0,0);
-}
-
-VALUE
-rb_dlptr_ref(VALUE self)
-{
- struct ptr_data *data;
-
- Data_Get_Struct(self, struct ptr_data, data);
- return rb_dlptr_new(&(data->ptr),0,0);
-}
-
-VALUE
-rb_dlptr_null_p(VALUE self)
-{
- struct ptr_data *data;
-
- Data_Get_Struct(self, struct ptr_data, data);
- return data->ptr ? Qfalse : Qtrue;
-}
-
-VALUE
-rb_dlptr_free_set(VALUE self, VALUE val)
-{
- struct ptr_data *data;
- extern VALUE rb_cDLCFunc;
-
- Data_Get_Struct(self, struct ptr_data, data);
- if( rb_obj_is_kind_of(val, rb_cDLCFunc) == Qtrue ){
- data->free = RCFUNC_DATA(val)->ptr;
- }
- else{
- data->free = NUM2PTR(rb_Integer(val));
- }
-
- return Qnil;
-}
-
-VALUE
-rb_dlptr_free_get(VALUE self)
-{
- struct ptr_data *pdata;
-
- Data_Get_Struct(self, struct ptr_data, pdata);
-
- return rb_dlcfunc_new(pdata->free, DLTYPE_VOID, "free<anonymous>", CFUNC_CDECL);
-}
-
-VALUE
-rb_dlptr_to_s(int argc, VALUE argv[], VALUE self)
-{
- struct ptr_data *data;
- VALUE arg1, val;
- int len;
-
- Data_Get_Struct(self, struct ptr_data, data);
- switch (rb_scan_args(argc, argv, "01", &arg1)) {
- case 0:
- val = rb_tainted_str_new2((char*)(data->ptr));
- break;
- case 1:
- len = NUM2INT(arg1);
- val = rb_tainted_str_new((char*)(data->ptr), len);
- break;
- default:
- rb_bug("rb_dlptr_to_s");
- }
-
- return val;
-}
-
-VALUE
-rb_dlptr_to_str(int argc, VALUE argv[], VALUE self)
-{
- struct ptr_data *data;
- VALUE arg1, val;
- int len;
-
- Data_Get_Struct(self, struct ptr_data, data);
- switch (rb_scan_args(argc, argv, "01", &arg1)) {
- case 0:
- val = rb_tainted_str_new((char*)(data->ptr),data->size);
- break;
- case 1:
- len = NUM2INT(arg1);
- val = rb_tainted_str_new((char*)(data->ptr), len);
- break;
- default:
- rb_bug("rb_dlptr_to_str");
- }
-
- return val;
-}
-
-VALUE
-rb_dlptr_inspect(VALUE self)
-{
- struct ptr_data *data;
- char str[1024];
-
- Data_Get_Struct(self, struct ptr_data, data);
- snprintf(str, 1023, "#<%s:%p ptr=%p size=%ld free=%p>",
- rb_class2name(CLASS_OF(self)), data, data->ptr, data->size, data->free);
- return rb_str_new2(str);
-}
-
-VALUE
-rb_dlptr_eql(VALUE self, VALUE other)
-{
- void *ptr1, *ptr2;
- ptr1 = rb_dlptr2cptr(self);
- ptr2 = rb_dlptr2cptr(other);
-
- return ptr1 == ptr2 ? Qtrue : Qfalse;
-}
-
-VALUE
-rb_dlptr_cmp(VALUE self, VALUE other)
-{
- void *ptr1, *ptr2;
- ptr1 = rb_dlptr2cptr(self);
- ptr2 = rb_dlptr2cptr(other);
- return PTR2NUM((long)ptr1 - (long)ptr2);
-}
-
-VALUE
-rb_dlptr_plus(VALUE self, VALUE other)
-{
- void *ptr;
- long num, size;
-
- ptr = rb_dlptr2cptr(self);
- size = RPTR_DATA(self)->size;
- num = NUM2LONG(other);
- return rb_dlptr_new((char *)ptr + num, size - num, 0);
-}
-
-VALUE
-rb_dlptr_minus(VALUE self, VALUE other)
-{
- void *ptr;
- long num, size;
-
- ptr = rb_dlptr2cptr(self);
- size = RPTR_DATA(self)->size;
- num = NUM2LONG(other);
- return rb_dlptr_new((char *)ptr - num, size + num, 0);
-}
-
-VALUE
-rb_dlptr_aref(int argc, VALUE argv[], VALUE self)
-{
- VALUE arg0, arg1;
- VALUE retval = Qnil;
- size_t offset, len;
-
- switch( rb_scan_args(argc, argv, "11", &arg0, &arg1) ){
- case 1:
- offset = NUM2ULONG(arg0);
- retval = INT2NUM(*((char*)RPTR_DATA(self)->ptr + offset));
- break;
- case 2:
- offset = NUM2ULONG(arg0);
- len = NUM2ULONG(arg1);
- retval = rb_tainted_str_new((char *)RPTR_DATA(self)->ptr + offset, len);
- break;
- default:
- rb_bug("rb_dlptr_aref()");
- }
- return retval;
-}
-
-VALUE
-rb_dlptr_aset(int argc, VALUE argv[], VALUE self)
-{
- VALUE arg0, arg1, arg2;
- VALUE retval = Qnil;
- size_t offset, len;
- void *mem;
-
- switch( rb_scan_args(argc, argv, "21", &arg0, &arg1, &arg2) ){
- case 2:
- offset = NUM2ULONG(arg0);
- ((char*)RPTR_DATA(self)->ptr)[offset] = NUM2UINT(arg1);
- retval = arg1;
- break;
- case 3:
- offset = NUM2ULONG(arg0);
- len = NUM2ULONG(arg1);
- if( TYPE(arg2) == T_STRING ){
- mem = StringValuePtr(arg2);
- }
- else if( rb_obj_is_kind_of(arg2, rb_cDLCPtr) ){
- mem = rb_dlptr2cptr(arg2);
- }
- else{
- mem = NUM2PTR(arg2);
- }
- memcpy((char *)RPTR_DATA(self)->ptr + offset, mem, len);
- retval = arg2;
- break;
- default:
- rb_bug("rb_dlptr_aset()");
- }
- return retval;
-}
-
-VALUE
-rb_dlptr_size(int argc, VALUE argv[], VALUE self)
-{
- VALUE size;
-
- if (rb_scan_args(argc, argv, "01", &size) == 0){
- return LONG2NUM(RPTR_DATA(self)->size);
- }
- else{
- RPTR_DATA(self)->size = NUM2LONG(size);
- return size;
- }
-}
-
-VALUE
-rb_dlptr_s_to_ptr(VALUE self, VALUE val)
-{
- VALUE ptr;
-
- if (rb_obj_is_kind_of(val, rb_cIO) == Qtrue){
- rb_io_t *fptr;
- FILE *fp;
- GetOpenFile(val, fptr);
- fp = rb_io_stdio_file(fptr);
- ptr = rb_dlptr_new(fp, 0, NULL);
- }
- else if (rb_obj_is_kind_of(val, rb_cString) == Qtrue){
- char *str = StringValuePtr(val);
- ptr = rb_dlptr_new(str, RSTRING_LEN(val), NULL);
- }
- else if (rb_respond_to(val, id_to_ptr)){
- VALUE vptr = rb_funcall(val, id_to_ptr, 0);
- if (rb_obj_is_kind_of(vptr, rb_cDLCPtr)){
- ptr = vptr;
- }
- else{
- rb_raise(rb_eDLError, "to_ptr should return a CPtr object");
- }
- }
- else{
- ptr = rb_dlptr_new(NUM2PTR(rb_Integer(val)), 0, NULL);
- }
- OBJ_INFECT(ptr, val);
- return ptr;
-}
-
-void
-Init_dlptr()
-{
- id_to_ptr = rb_intern("to_ptr");
-
- rb_cDLCPtr = rb_define_class_under(rb_mDL, "CPtr", rb_cObject);
- rb_define_alloc_func(rb_cDLCPtr, rb_dlptr_s_allocate);
- rb_define_singleton_method(rb_cDLCPtr, "malloc", rb_dlptr_s_malloc, -1);
- rb_define_singleton_method(rb_cDLCPtr, "to_ptr", rb_dlptr_s_to_ptr, 1);
- rb_define_singleton_method(rb_cDLCPtr, "[]", rb_dlptr_s_to_ptr, 1);
- rb_define_method(rb_cDLCPtr, "initialize", rb_dlptr_initialize, -1);
- rb_define_method(rb_cDLCPtr, "free=", rb_dlptr_free_set, 1);
- rb_define_method(rb_cDLCPtr, "free", rb_dlptr_free_get, 0);
- rb_define_method(rb_cDLCPtr, "to_i", rb_dlptr_to_i, 0);
- rb_define_method(rb_cDLCPtr, "to_value", rb_dlptr_to_value, 0);
- rb_define_method(rb_cDLCPtr, "ptr", rb_dlptr_ptr, 0);
- rb_define_method(rb_cDLCPtr, "+@", rb_dlptr_ptr, 0);
- rb_define_method(rb_cDLCPtr, "ref", rb_dlptr_ref, 0);
- rb_define_method(rb_cDLCPtr, "-@", rb_dlptr_ref, 0);
- rb_define_method(rb_cDLCPtr, "null?", rb_dlptr_null_p, 0);
- rb_define_method(rb_cDLCPtr, "to_s", rb_dlptr_to_s, -1);
- rb_define_method(rb_cDLCPtr, "to_str", rb_dlptr_to_str, -1);
- rb_define_method(rb_cDLCPtr, "inspect", rb_dlptr_inspect, 0);
- rb_define_method(rb_cDLCPtr, "<=>", rb_dlptr_cmp, 1);
- rb_define_method(rb_cDLCPtr, "==", rb_dlptr_eql, 1);
- rb_define_method(rb_cDLCPtr, "eql?", rb_dlptr_eql, 1);
- rb_define_method(rb_cDLCPtr, "+", rb_dlptr_plus, 1);
- rb_define_method(rb_cDLCPtr, "-", rb_dlptr_minus, 1);
- rb_define_method(rb_cDLCPtr, "[]", rb_dlptr_aref, -1);
- rb_define_method(rb_cDLCPtr, "[]=", rb_dlptr_aset, -1);
- rb_define_method(rb_cDLCPtr, "size", rb_dlptr_size, -1);
- rb_define_method(rb_cDLCPtr, "size=", rb_dlptr_size, -1);
-
- rb_define_const(rb_mDL, "NULL", rb_dlptr_new(0, 0, 0));
-}
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