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authorttate <ttate@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2002-04-02 10:56:13 +0000
committerttate <ttate@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2002-04-02 10:56:13 +0000
commit7d711b817e62eb6c8dee01ea2283fcb1ad90f8ac (patch)
treeb1b54ab76217775071de4e3669674aa7887aa6b9 /ext/dl/handle.c
parent64b6406445e53f187d2982f87becff8065edd0cc (diff)
Add ruby-dl
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2324 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'ext/dl/handle.c')
-rw-r--r--ext/dl/handle.c207
1 files changed, 207 insertions, 0 deletions
diff --git a/ext/dl/handle.c b/ext/dl/handle.c
new file mode 100644
index 00000000000..d75cb11a8c2
--- /dev/null
+++ b/ext/dl/handle.c
@@ -0,0 +1,207 @@
+/* -*- C -*-
+ * $Id$
+ */
+
+#include <ruby.h>
+#include "dl.h"
+
+VALUE rb_cDLHandle;
+
+void
+dlhandle_free(struct dl_handle *dlhandle)
+{
+ if( dlhandle->ptr && dlhandle->open && dlhandle->enable_close ){
+ dlclose(dlhandle->ptr);
+ };
+};
+
+VALUE
+rb_dlhandle_close(VALUE self)
+{
+ struct dl_handle *dlhandle;
+
+ Data_Get_Struct(self, struct dl_handle, dlhandle);
+ dlhandle->open = 0;
+ return INT2NUM(dlclose(dlhandle->ptr));
+};
+
+VALUE
+rb_dlhandle_s_new(int argc, VALUE argv[], VALUE self)
+{
+ void *ptr;
+ VALUE val;
+ struct dl_handle *dlhandle;
+ VALUE lib, flag;
+ char *clib;
+ int cflag;
+ const char *err;
+
+ switch( rb_scan_args(argc, argv, "11", &lib, &flag) ){
+ case 1:
+ clib = STR2CSTR(lib);
+ cflag = RTLD_LAZY | RTLD_GLOBAL;
+ break;
+ case 2:
+ clib = STR2CSTR(lib);
+ cflag = NUM2INT(flag);
+ break;
+ default:
+ rb_bug("rb_dlhandle_new");
+ };
+
+ ptr = dlopen(clib, cflag);
+#if defined(HAVE_DLERROR)
+ if( (err = dlerror()) ){
+ rb_raise(rb_eRuntimeError, err);
+ };
+#else
+ if( !ptr ){
+ err = dlerror();
+ rb_raise(rb_eRuntimeError, err);
+ };
+#endif
+ val = Data_Make_Struct(rb_cDLHandle, struct dl_handle, 0,
+ dlhandle_free, dlhandle);
+ dlhandle->ptr = ptr;
+ dlhandle->open = 1;
+ dlhandle->enable_close = 0;
+
+ rb_obj_call_init(val, argc, argv);
+
+ if( rb_block_given_p() ){
+ rb_ensure(rb_yield, val, rb_dlhandle_close, val);
+ };
+
+ return val;
+};
+
+VALUE
+rb_dlhandle_init(int argc, VALUE argv[], VALUE self)
+{
+ return Qnil;
+};
+
+VALUE
+rb_dlhandle_enable_close(VALUE self)
+{
+ struct dl_handle *dlhandle;
+
+ Data_Get_Struct(self, struct dl_handle, dlhandle);
+ dlhandle->enable_close = 1;
+ return Qnil;
+};
+
+VALUE
+rb_dlhandle_disable_close(VALUE self)
+{
+ struct dl_handle *dlhandle;
+
+ Data_Get_Struct(self, struct dl_handle, dlhandle);
+ dlhandle->enable_close = 0;
+ return Qnil;
+};
+
+VALUE
+rb_dlhandle_to_i(VALUE self)
+{
+ struct dl_handle *dlhandle;
+
+ Data_Get_Struct(self, struct dl_handle, dlhandle);
+ return DLLONG2NUM(dlhandle);
+};
+
+VALUE
+rb_dlhandle_to_ptr(VALUE self)
+{
+ struct dl_handle *dlhandle;
+
+ Data_Get_Struct(self, struct dl_handle, dlhandle);
+ return rb_dlptr_new(dlhandle, sizeof(dlhandle), 0);
+};
+
+VALUE
+rb_dlhandle_sym(int argc, VALUE argv[], VALUE self)
+{
+ VALUE sym, type;
+ void (*func)();
+ VALUE val;
+ struct sym_data *data;
+ int *ctypes;
+ int i, ctypes_len;
+ struct dl_handle *dlhandle;
+ void *handle;
+ const char *name, *stype;
+ const char *err;
+
+ if( rb_scan_args(argc, argv, "11", &sym, &type) == 2 ){
+ Check_Type(type, T_STRING);
+ stype = STR2CSTR(type);
+ }
+ else{
+ stype = NULL;
+ };
+
+ if( sym == Qnil ){
+#if defined(RTLD_NEXT)
+ name = RTLD_NEXT;
+#else
+ name = NULL;
+#endif
+ }
+ else{
+ Check_Type(sym, T_STRING);
+ name = STR2CSTR(sym);
+ };
+
+
+ Data_Get_Struct(self, struct dl_handle, dlhandle);
+ handle = dlhandle->ptr;
+
+ func = dlsym(handle, name);
+#if defined(HAVE_DLERROR)
+ if( (err = dlerror()) && (!func) )
+#else
+ if( !func )
+#endif
+ {
+#if defined(__CYGWIN__) || defined(WIN32) || defined(__MINGW32__)
+ {
+ int len = strlen(name);
+ char *name_a = (char*)dlmalloc(len+2);
+ strcpy(name_a, name);
+ name_a[len] = 'A';
+ name_a[len+1] = '\0';
+ func = dlsym(handle, name_a);
+ dlfree(name_a);
+#if defined(HAVE_DLERROR)
+ if( (err = dlerror()) && (!func) )
+#else
+ if( !func )
+#endif
+ {
+ rb_raise(rb_eRuntimeError, "Unknown symbol \"%sA\".", name);
+ };
+ }
+#else
+ rb_raise(rb_eRuntimeError, "Unknown symbol \"%s\".", name);
+#endif
+ };
+ val = rb_dlsym_new(func, name, stype);
+
+ return val;
+};
+
+void
+Init_dlhandle()
+{
+ rb_cDLHandle = rb_define_class_under(rb_mDL, "Handle", rb_cData);
+ rb_define_singleton_method(rb_cDLHandle, "new", rb_dlhandle_s_new, -1);
+ rb_define_method(rb_cDLHandle, "initialize", rb_dlhandle_init, -1);
+ rb_define_method(rb_cDLHandle, "to_i", rb_dlhandle_to_i, 0);
+ rb_define_method(rb_cDLHandle, "to_ptr", rb_dlhandle_to_ptr, 0);
+ rb_define_method(rb_cDLHandle, "close", rb_dlhandle_close, 0);
+ rb_define_method(rb_cDLHandle, "sym", rb_dlhandle_sym, -1);
+ rb_define_method(rb_cDLHandle, "[]", rb_dlhandle_sym, -1);
+ rb_define_method(rb_cDLHandle, "disable_close", rb_dlhandle_disable_close, 0);
+ rb_define_method(rb_cDLHandle, "enable_close", rb_dlhandle_enable_close, 0);
+};