[EXPERIMENTAL: NEED DISCUSS]

* vm_trace.c: add events
* :thread_begin - hook at thread beggining.
* :thead_end - hook at thread ending.
* :b_call - hook at block enter.
* :b_return - hook at block leave.
  This change slow down block invocation.
  Please try and give us feedback until 2.0 code freeze.
* include/ruby/ruby.h: ditto.
* compile.c (rb_iseq_compile_node): ditto.
* insns.def: ditto.
* thread.c: ditto.
* vm.c: ditto.
* include/ruby/debug.h: add a comment.
* test/ruby/test_settracefunc.rb: add a tests.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38007 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 1 deletions

diff --git a/insns.def b/insns.def
index 0cc5bb9c8e..e9716f4d0f 100644
--- a/insns.def
+++ b/insns.def
@@ -871,8 +871,9 @@ trace
                   rb_sourceline());
         }
     }
+
     EXEC_EVENT_HOOK(th, flag, GET_SELF(), 0, 0 /* id and klass are resolved at callee */,
-		    flag & RUBY_EVENT_RETURN ? TOPN(0) : Qundef);
+		    (flag & RUBY_EVENT_RETURN | RUBY_EVENT_B_RETURN) ? TOPN(0) : Qundef);
 }
 
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