From 0a8699c4610bd0bb73c86a4b1c11c240a15f1dd0 Mon Sep 17 00:00:00 2001
From: iignatyev <unknown>
Date: Wed, 9 Apr 2014 22:37:37 +0400
Subject: [PATCH] 8039597: WhiteBox :: clean type profiling data Reviewed-by:
 kvn, roland

---
 src/share/vm/prims/whitebox.cpp        | 26 ++++++++++++++++++++++++++
 src/share/vm/runtime/vm_operations.hpp |  1 +
 2 files changed, 27 insertions(+)

diff --git a/src/share/vm/prims/whitebox.cpp b/src/share/vm/prims/whitebox.cpp
index 76f38fc9d..80cb0dfa5 100644
--- a/src/share/vm/prims/whitebox.cpp
+++ b/src/share/vm/prims/whitebox.cpp
@@ -438,6 +438,30 @@ WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobjec
   return (mh->queued_for_compilation() || nm != NULL);
 WB_END
 
+class VM_WhiteBoxOperation : public VM_Operation {
+ public:
+  VM_WhiteBoxOperation()                         { }
+  VMOp_Type type()                  const        { return VMOp_WhiteBoxOperation; }
+  bool allow_nested_vm_operations() const        { return true; }
+};
+
+class AlwaysFalseClosure : public BoolObjectClosure {
+ public:
+  bool do_object_b(oop p) { return false; }
+};
+
+static AlwaysFalseClosure always_false;
+
+class VM_WhiteBoxCleanMethodData : public VM_WhiteBoxOperation {
+ public:
+  VM_WhiteBoxCleanMethodData(MethodData* mdo) : _mdo(mdo) { }
+  void doit() {
+    _mdo->clean_method_data(&always_false);
+  }
+ private:
+  MethodData* _mdo;
+};
+
 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
   CHECK_JNI_EXCEPTION(env);
@@ -453,6 +477,8 @@ WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
     for (int i = 0; i < arg_count; i++) {
       mdo->set_arg_modified(i, 0);
     }
+    VM_WhiteBoxCleanMethodData op(mdo);
+    VMThread::execute(&op);
   }
 
   mh->clear_not_c1_compilable();
diff --git a/src/share/vm/runtime/vm_operations.hpp b/src/share/vm/runtime/vm_operations.hpp
index 0cb3a18f9..34151e0e4 100644
--- a/src/share/vm/runtime/vm_operations.hpp
+++ b/src/share/vm/runtime/vm_operations.hpp
@@ -95,6 +95,7 @@
   template(Exit)                                  \
   template(LinuxDllLoad)                          \
   template(RotateGCLog)                           \
+  template(WhiteBoxOperation)                     \
 
 class VM_Operation: public CHeapObj<mtInternal> {
  public:
-- 
GitLab