* include/ruby/debug.h, vm_trace.c: add rb_postponed_job API.

  Postponed jobs are registered with this API. Registered jobs
  are invoked at `ruby-running-safe-point' as soon as possible.
  This timing is completely same as finalizer timing.
  There are two APIs:
* rb_postponed_job_register(flags, func, data): register a
  postponed job with data. flags are reserved.
* rb_postponed_job_register_one(flags, func, data): same as
  `rb_postponed_job_register', but only one `func' job is
  registered (skip if `func' is already registered).
  This change is mostly written by Aman Gupta (tmm1).
  https://bugs.ruby-lang.org/issues/8107#note-15
  [Feature #8107]
* gc.c: use postponed job API for finalizer.
* common.mk: add dependency from vm_trace.c to debug.h.
* ext/-test-/postponed_job/extconf.rb, postponed_job.c,
  test/-ext-/postponed_job/test_postponed_job.rb: add a test.
* thread.c: implement postponed API.
* vm_core.h: ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40940 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 17 insertions, 3 deletions

diff --git a/gc.c b/gc.c
index 05050f1e22..a9a92b8bb3 100644
--- a/gc.c
+++ b/gc.c
@@ -17,6 +17,7 @@
 #include "ruby/io.h"
 #include "ruby/thread.h"
 #include "ruby/util.h"
+#include "ruby/debug.h"
 #include "eval_intern.h"
 #include "vm_core.h"
 #include "internal.h"
@@ -1644,8 +1645,8 @@ finalize_deferred(rb_objspace_t *objspace)
     }
 }
 
-void
-rb_gc_finalize_deferred(void)
+static void
+gc_finalize_deferred(void *dmy)
 {
     rb_objspace_t *objspace = &rb_objspace;
     if (ATOMIC_EXCHANGE(finalizing, 1)) return;
@@ -1653,6 +1654,19 @@ rb_gc_finalize_deferred(void)
     ATOMIC_SET(finalizing, 0);
 }
 
+/* TODO: to keep compatibility, maybe unused. */
+void
+rb_gc_finalize_deferred(void)
+{
+    gc_finalize_deferred(0);
+}
+
+static void
+gc_finalize_deferred_register()
+{
+    rb_postponed_job_register_one(0, gc_finalize_deferred, 0);
+}
+
 struct force_finalize_list {
     VALUE obj;
     VALUE table;
@@ -2179,7 +2193,7 @@ slot_sweep_body(rb_objspace_t *objspace, struct heaps_slot *sweep_slot, const in
     if (deferred_final_list && !finalizing) {
         rb_thread_t *th = GET_THREAD();
         if (th) {
-            RUBY_VM_SET_FINALIZER_INTERRUPT(th);
+	    gc_finalize_deferred_register();
         }
     }