2006-01-26 Frank Ch. Eigler <fche@elastic.org>

	PR 2060: lock elevation, mop-up
	* staptree.cxx (functioncall_traversing_visitor): Store a
	current_function pointer during traversal.
	(visit_embeddedcode): Use it to handle $target-synthesized functions.
	(varuse_collecting_visitor::visit_assignment): Correct l-lr typo.
	(visit_foreach_loop): Note added write on sorted foreach.
	(visit_delete_statement): Note as read+write.
	* staptree.h: Corresponding changes.
	* elaborate.cxx (dead_assignment_remover::visit_expr_statement):
	Correct stmt token after possible expression rewriting.
	* tapsets.cxx (visit_target_symbol): Create naming convention
	to recognize $target-synthesized functions.
	* translate.cxx (emit_locks, emit_unlocks): New functions to
	emit lock/unlock sequences at the outermost level of a probe.
	(emit_probe): Call them.
	(varlock_*): #if-0 out the lock code generation.  Later, these
	classes should be removed.
	(translate_pass): Emit read_trylock() kludge macro for old kernels.

1 files changed, 4 insertions, 0 deletions

diff --git a/staptree.h b/staptree.h
index fecd6aaf..cde87372 100644
--- a/staptree.h
+++ b/staptree.h
@@ -676,6 +676,8 @@ struct traversing_visitor: public visitor
 struct functioncall_traversing_visitor: public traversing_visitor
 {
   std::set<functiondecl*> traversed;
+  functiondecl* current_function;
+  functioncall_traversing_visitor(): current_function(0) {}
   void visit_functioncall (functioncall* e);
 };
 
@@ -696,12 +698,14 @@ struct varuse_collecting_visitor: public functioncall_traversing_visitor
     current_lvalue(0),
     current_lrvalue(0) {}
   void visit_embeddedcode (embeddedcode *s);
+  void visit_delete_statement (delete_statement *s);
   void visit_print_format (print_format *e);
   void visit_assignment (assignment *e);
   void visit_arrayindex (arrayindex *e);
   void visit_symbol (symbol *e);
   void visit_pre_crement (pre_crement *e);
   void visit_post_crement (post_crement *e);
+  void visit_foreach_loop (foreach_loop *s);
 };