# HG changeset patch
# User Tom Rodriguez <tom.rodriguez@oracle.com>
# Date 1470183489 25200
# Node ID 1ceab3d13eb89946bdfa0b6faefe138825c146cf
# Parent  5de73b32cff8db6d29d0d3f7e0b8cbec87866848
Add a vframe_id to jvmtiDeferredLocalVariable to properly track vframe identity

diff -r 5de73b32cff8 -r 1ceab3d13eb8 src/share/vm/runtime/vframe_hp.cpp
--- a/src/share/vm/runtime/vframe_hp.cpp	Fri Jul 29 08:47:59 2016 -0700
+++ b/src/share/vm/runtime/vframe_hp.cpp	Tue Aug 02 17:18:09 2016 -0700
@@ -157,7 +157,7 @@
     deferred =  new(ResourceObj::C_HEAP, mtCompiler) GrowableArray<jvmtiDeferredLocalVariableSet*> (1, true);
     thread()->set_deferred_locals(deferred);
   }
-  deferred->push(new jvmtiDeferredLocalVariableSet(method(), bci(), fr().id()));
+  deferred->push(new jvmtiDeferredLocalVariableSet(method(), bci(), fr().id(), vframe_id()));
   assert(deferred->top()->id() == fr().id(), "Huh? Must match");
   deferred->top()->set_local_at(index, type, value);
 }
@@ -242,6 +242,7 @@
 compiledVFrame::compiledVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread, nmethod* nm)
 : javaVFrame(fr, reg_map, thread) {
   _scope  = NULL;
+  _vframe_id = 0;
   // Compiled method (native stub or Java code)
   // native wrappers have no scope data, it is implied
   if (!nm->is_native_method()) {
@@ -249,9 +250,10 @@
   }
 }
 
-compiledVFrame::compiledVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread, ScopeDesc* scope)
+compiledVFrame::compiledVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread, ScopeDesc* scope, int vframe_id)
 : javaVFrame(fr, reg_map, thread) {
   _scope  = scope;
+  _vframe_id = vframe_id;
   guarantee(_scope != NULL, "scope must be present");
 }
 
@@ -315,14 +317,15 @@
   } else {
     return scope()->is_top()
       ? vframe::sender()
-      : new compiledVFrame(&f, register_map(), thread(), scope()->sender());
+      : new compiledVFrame(&f, register_map(), thread(), scope()->sender(), vframe_id() + 1);
   }
 }
 
-jvmtiDeferredLocalVariableSet::jvmtiDeferredLocalVariableSet(Method* method, int bci, intptr_t* id) {
+jvmtiDeferredLocalVariableSet::jvmtiDeferredLocalVariableSet(Method* method, int bci, intptr_t* id, int vframe_id) {
   _method = method;
   _bci = bci;
   _id = id;
+  _vframe_id = vframe_id;
   // Alway will need at least one, must be on C heap
   _locals = new(ResourceObj::C_HEAP, mtCompiler) GrowableArray<jvmtiDeferredLocalVariable*> (1, true);
 }
@@ -338,7 +341,11 @@
 bool jvmtiDeferredLocalVariableSet::matches(vframe* vf) {
   if (!vf->is_compiled_frame()) return false;
   compiledVFrame* cvf = (compiledVFrame*)vf;
-  return cvf->fr().id() == id() && cvf->method() == method() && cvf->bci() == bci();
+  if (cvf->fr().id() == id() && cvf->vframe_id() == vframe_id()) {
+    assert(cvf->method() == method() && cvf->bci() == bci(), "must agree");
+    return true;
+  }
+  return false;
 }
 
 void jvmtiDeferredLocalVariableSet::set_local_at(int idx, BasicType type, jvalue val) {
diff -r 5de73b32cff8 -r 1ceab3d13eb8 src/share/vm/runtime/vframe_hp.hpp
--- a/src/share/vm/runtime/vframe_hp.hpp	Fri Jul 29 08:47:59 2016 -0700
+++ b/src/share/vm/runtime/vframe_hp.hpp	Tue Aug 02 17:18:09 2016 -0700
@@ -36,6 +36,7 @@
   StackValueCollection*        locals()             const;
   StackValueCollection*        expressions()        const;
   GrowableArray<MonitorInfo*>* monitors()           const;
+  int                          vframe_id()          const { return _vframe_id; }
 
   void set_locals(StackValueCollection* values) const;
 
@@ -68,14 +69,14 @@
 
  protected:
   ScopeDesc* _scope;
-
+  int _vframe_id;
 
   //StackValue resolve(ScopeValue* sv) const;
   BasicLock* resolve_monitor_lock(Location location) const;
   StackValue *create_stack_value(ScopeValue *sv) const;
 
  private:
-  compiledVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread, ScopeDesc* scope);
+  compiledVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread, ScopeDesc* scope, int vframe_id);
 
 #ifndef PRODUCT
  public:
@@ -95,6 +96,7 @@
   Method* _method;
   int       _bci;
   intptr_t* _id;
+  int _vframe_id;
   GrowableArray<jvmtiDeferredLocalVariable*>* _locals;
 
  public:
@@ -102,6 +104,7 @@
   Method*                           method()         const  { return _method; }
   int                               bci()            const  { return _bci; }
   intptr_t*                         id()             const  { return _id; }
+  int                               vframe_id()      const  { return _vframe_id; }
   GrowableArray<jvmtiDeferredLocalVariable*>* locals()         const  { return _locals; }
   void                              set_local_at(int idx, BasicType typ, jvalue val);
 
@@ -111,7 +114,7 @@
   void                              oops_do(OopClosure* f);
 
   // constructor
-  jvmtiDeferredLocalVariableSet(Method* method, int bci, intptr_t* id);
+  jvmtiDeferredLocalVariableSet(Method* method, int bci, intptr_t* id, int vframe_id);
 
   // destructor
   ~jvmtiDeferredLocalVariableSet();