merges r21438 from trunk into ruby_1_9_1.

* thread.c: fix comment (terminology: Global VM Lock).
* thread.c (blocking_region_begin, blocking_region_end):
  save and clear th->blocking_region_buffer.
* thread.c (rb_thread_call_with_gvl): check if it has GVL.
* thread.c (ruby_thread_has_gvl_p): added.
* vm_core.h: add decls.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@21462 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 0 deletions

diff --git a/vm_core.h b/vm_core.h
index b2ebbc8155..cd5e73fe2b 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -588,6 +588,9 @@ VALUE vm_invoke_proc(rb_thread_t *th, rb_proc_t *proc, VALUE self,
 VALUE vm_make_proc(rb_thread_t *th, const rb_block_t *block, VALUE klass);
 VALUE vm_make_env_object(rb_thread_t *th, rb_control_frame_t *cfp);
 
+void *rb_thread_call_with_gvl(void *(*func)(void *), void *data1);
+int ruby_thread_has_gvl_p(void);
+
 NOINLINE(void rb_gc_save_machine_context(rb_thread_t *));
 
 #define sysstack_error GET_VM()->special_exceptions[ruby_error_sysstack]