ext/objspace: remove OS.after_gc_start_hook= and move internal test

* ext/objspace/gc_hook.c: remove this file
* ext/-test-/tracepoint/gc_hook.c: new filename for above
* ext/objspace/objspace.c: remove ObjectSpace.after_gc_start_hook=
* test/objspace/test_objspace.rb: remove test
* test/-ext-/tracepoint/test_tracepoint.rb: add above test for
  tracepoint re-entry

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44007 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 0 insertions, 97 deletions

diff --git a/ext/objspace/gc_hook.c b/ext/objspace/gc_hook.c
deleted file mode 100644
index eb6ac7401a..0000000000
--- a/ext/objspace/gc_hook.c
+++ /dev/null
@@ -1,95 +0,0 @@
-/**********************************************************************
-
-  gc_hook.c - GC hook mechanism/ObjectSpace extender for MRI.
-
-  $Author$
-  created at: Tue May 28 01:34:25 2013
-
-  NOTE: This extension library is not expected to exist except C Ruby.
-  NOTE: This feature is an example usage of internal event tracing APIs.
-
-  All the files in this distribution are covered under the Ruby's
-  license (see the file COPYING).
-
-**********************************************************************/
-
-#include "ruby/ruby.h"
-#include "ruby/debug.h"
-
-static int invoking; /* TODO: should not be global variable */
-
-static VALUE
-invoke_proc_ensure(void *dmy)
-{
-    invoking = 0;
-    return Qnil;
-}
-
-static VALUE
-invoke_proc_begin(VALUE proc)
-{
-    return rb_proc_call(proc, rb_ary_new());
-}
-
-static void
-invoke_proc(void *data)
-{
-    VALUE proc = (VALUE)data;
-    invoking += 1;
-    rb_ensure(invoke_proc_begin, proc, invoke_proc_ensure, 0);
-}
-
-static void
-gc_start_end_i(VALUE tpval, void *data)
-{
-    if (0) {
-	rb_trace_arg_t *tparg = rb_tracearg_from_tracepoint(tpval);
-	fprintf(stderr, "trace: %s\n", rb_tracearg_event_flag(tparg) == RUBY_INTERNAL_EVENT_GC_START ? "gc_start" : "gc_end");
-    }
-
-    if (invoking == 0) {
-	rb_postponed_job_register(0, invoke_proc, data);
-    }
-}
-
-static VALUE
-set_gc_hook(VALUE rb_mObjSpace, VALUE proc, rb_event_flag_t event, const char *tp_str, const char *proc_str)
-{
-    VALUE tpval;
-    ID tp_key = rb_intern(tp_str);
-    ID proc_key = rb_intern(proc_str);
-
-    /* disable previous keys */
-    if (rb_ivar_defined(rb_mObjSpace, tp_key) != 0 &&
-	RTEST(tpval = rb_ivar_get(rb_mObjSpace, tp_key))) {
-	rb_tracepoint_disable(tpval);
-	rb_ivar_set(rb_mObjSpace, tp_key, Qnil);
-	rb_ivar_set(rb_mObjSpace, proc_key, Qnil);
-    }
-
-    if (RTEST(proc)) {
-	if (!rb_obj_is_proc(proc)) {
-	    rb_raise(rb_eTypeError, "trace_func needs to be Proc");
-	}
-
-	tpval = rb_tracepoint_new(0, event, gc_start_end_i, (void *)proc);
-	rb_ivar_set(rb_mObjSpace, tp_key, tpval);
-	rb_ivar_set(rb_mObjSpace, proc_key, proc); /* GC guard */
-	rb_tracepoint_enable(tpval);
-    }
-
-    return proc;
-}
-
-static VALUE
-set_after_gc_start(VALUE rb_mObjSpace, VALUE proc)
-{
-    return set_gc_hook(rb_mObjSpace, proc, RUBY_INTERNAL_EVENT_GC_START,
-		       "__set_after_gc_start_tpval__", "__set_after_gc_start_proc__");
-}
-
-void
-Init_gc_hook(VALUE rb_mObjSpace)
-{
-    rb_define_module_function(rb_mObjSpace, "after_gc_start_hook=", set_after_gc_start, 1);
-}
diff --git a/ext/objspace/objspace.c b/ext/objspace/objspace.c
index f9fa833c99..6dce515bf6 100644
--- a/ext/objspace/objspace.c
+++ b/ext/objspace/objspace.c
@@ -716,7 +716,6 @@ reachable_objects_from_root(VALUE self)
 }
 
 void Init_object_tracing(VALUE rb_mObjSpace);
-void Init_gc_hook(VALUE rb_mObjSpace);
 void Init_objspace_dump(VALUE rb_mObjSpace);
 
 /*
@@ -768,6 +767,5 @@ Init_objspace(void)
     rb_define_method(rb_mInternalObjectWrapper, "internal_object_id", iow_internal_object_id, 0);
 
     Init_object_tracing(rb_mObjSpace);
-    Init_gc_hook(rb_mObjSpace);
     Init_objspace_dump(rb_mObjSpace);
 }