* ext/dbm/dbm.c (fdbm_closed): new method DBM#closed?

* ext/gdbm/gdbm.c (fgdbm_closed): new method GDBM#closed?

* ext/sdbm/init.c (fsdbm_closed): new method SDBM#closed?

* test/dbm/test_dbm.rb, test/gdbm/test_gdbm.rb, test/sdbm/test_sdbm.rb
  (teardown): close all db objects before deleting data files.

* win32/win32.{ch} (unlink): hook runtime function to change
  file attribute before unlinking.
  merge from 1.8, see [ruby-dev:26360]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@8650 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 16 insertions, 0 deletions

diff --git a/ext/sdbm/init.c b/ext/sdbm/init.c
index 07e5567329..c8883c9f8d 100644
--- a/ext/sdbm/init.c
+++ b/ext/sdbm/init.c
@@ -62,6 +62,21 @@ fsdbm_close(obj)
     return Qnil;
 }
 
+static VALUE
+fsdbm_closed(obj)
+    VALUE obj;
+{
+    struct dbmdata *dbmp;
+
+    Data_Get_Struct(obj, struct dbmdata, dbmp);
+    if (dbmp == 0)
+	return Qtrue;
+    if (dbmp->di_dbm == 0)
+	return Qtrue;
+
+    return Qfalse;
+}
+
 static VALUE fsdbm_alloc _((VALUE));
 static VALUE
 fsdbm_alloc(klass)
@@ -700,6 +715,7 @@ Init_sdbm()
 
     rb_define_method(rb_cDBM, "initialize", fsdbm_initialize, -1);
     rb_define_method(rb_cDBM, "close", fsdbm_close, 0);
+    rb_define_method(rb_cDBM, "closed?", fsdbm_closed, 0);
     rb_define_method(rb_cDBM, "[]", fsdbm_aref, 1);
     rb_define_method(rb_cDBM, "fetch", fsdbm_fetch_m, -1);
     rb_define_method(rb_cDBM, "[]=", fsdbm_store, 2);