Generalize finalizers interruption API

(fix of commit e71a7d653)

* finalize.c (GC_interrupt_finalizers): Move definition upper (to be
before GC_enqueue_all_finalizers); change type from GC_bool to
unsigned; update comment.
* finalize.c [!JAVA_FINALIZATION_NOT_NEEDED] (GC_finalize_all):
Set GC_interrupt_finalizers to 0 after GC_enqueue_all_finalizers()
call.
* finalize.c (GC_set_interrupt_finalizers): Add unsigned argument;
set GC_interrupt_finalizers to the argument value.
* finalize.c (GC_set_interrupt_finalizers, GC_invoke_finalizers):
Wrap access to GC_interrupt_finalizers into LOCK/UNLOCK.
* finalize.c (GC_get_interrupt_finalizers): New public function
definition.
* finalize.c (GC_invoke_finalizers): Do not break the loop (because of
non-zero GC_interrupt_finalizers) on the first iteration or if
iteration number is smaller than GC_interrupt_finalizers value.
* finalize.c (GC_notify_or_invoke_finalizers): Update comment for
the reset of *pnested.
* finalize.c [!THREADS] (GC_notify_or_invoke_finalizers): Allow
finalize_now to be non-null in the assertion in case of a non-zero
value of GC_interrupt_finalizers.
* include/gc/gc.h (GC_set_interrupt_finalizers): Update comment; add
unsigned argument.
* include/gc/gc.h (GC_get_interrupt_finalizers): New public function
declaration.
* tests/gctest.c [GC_PTHREADS && !GC_NO_FINALIZATION] (main): Call
GC_set_interrupt_finalizers() and GC_get_interrupt_finalizers().

1 files changed, 1 insertions, 0 deletions

diff --git a/tests/gctest.c b/tests/gctest.c
index b2bbb96a..709d65cd 100644
--- a/tests/gctest.c
+++ b/tests/gctest.c
@@ -2606,6 +2606,7 @@ int main(void)
 #   endif
 #   ifndef GC_NO_FINALIZATION
       GC_set_await_finalize_proc(GC_get_await_finalize_proc());
+      GC_set_interrupt_finalizers(GC_get_interrupt_finalizers());
 #     ifndef GC_TOGGLE_REFS_NOT_NEEDED
         GC_set_toggleref_func(GC_get_toggleref_func());
 #     endif