Mercurial > hg > truffle

diff src/share/vm/runtime/sweeper.cpp @ 989:148e5441d916

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
6863023: need non-perm oops in code cache for JSR 292 Summary: Make a special root-list for those few nmethods which might contain non-perm oops. Reviewed-by: twisti, kvn, never, jmasa, ysr
author jrose
date Tue, 15 Sep 2009 21:53:47 -0700
parents a61af66fc99e
children 54b3b351d6f9
line wrap: on
line diff
--- a/src/share/vm/runtime/sweeper.cpp	Tue Sep 15 11:09:34 2009 -0700
+++ b/src/share/vm/runtime/sweeper.cpp	Tue Sep 15 21:53:47 2009 -0700
@@ -34,6 +34,17 @@
 jint      NMethodSweeper::_not_entrant_seen_on_stack = 0;
 bool      NMethodSweeper::_rescan = false;
 
+class MarkActivationClosure: public CodeBlobClosure {
+public:
+  virtual void do_code_blob(CodeBlob* cb) {
+    // If we see an activation belonging to a non_entrant nmethod, we mark it.
+    if (cb->is_nmethod() && ((nmethod*)cb)->is_not_entrant()) {
+      ((nmethod*)cb)->mark_as_seen_on_stack();
+    }
+  }
+};
+static MarkActivationClosure mark_activation_closure;
+
 void NMethodSweeper::sweep() {
   assert(SafepointSynchronize::is_at_safepoint(), "must be executed at a safepoint");
   if (!MethodFlushing) return;
@@ -57,7 +68,7 @@
     if (PrintMethodFlushing) {
       tty->print_cr("### Sweep: stack traversal %d", _traversals);
     }
-    Threads::nmethods_do();
+    Threads::nmethods_do(&mark_activation_closure);
 
     // reset the flags since we started a scan from the beginning.
     _rescan = false;