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, 1 insertions, 0 deletions

diff --git a/elaborate.cxx b/elaborate.cxx
index 613d85ae..b0f784d4 100644
--- a/elaborate.cxx
+++ b/elaborate.cxx
@@ -1303,6 +1303,7 @@ dead_assignment_remover::visit_expr_statement (expr_statement* s)
   expression** last_expr = current_expr;
   current_expr = & s->value;
   s->value->visit (this);
+  s->tok = s->value->tok; // in case it was replaced
   current_expr = last_expr;
 }