Merge

.hgtags

@@ -402,3 +402,4 @@ b2426da30009cd3069d03de073f351e6432c7682 hs25-b61
 ce42d815dd2130250acf6132b51b624001638f0d jdk8-b119
 05fedd51e40da22c9460bf17c7185889e435db3d hs25-b62
 fca262db9c4309f99d2f5542ab0780e45c2f1578 jdk8-b120
+41f4cad94c581034d4c427d2aaabcc20f26342d0 hs25-b63

agent/src/share/classes/sun/jvm/hotspot/oops/ObjectHeap.java

@@ -364,7 +364,7 @@ public class ObjectHeap {
       }
       catch (AddressException e) {
         // This is okay at the top of these regions
-      }
+          }
       catch (UnknownOopException e) {
         // This is okay at the top of these regions
       }
@@ -373,7 +373,7 @@ public class ObjectHeap {
     visitor.epilogue();
   }
 
-  private void addLiveRegions(List input, List output) {
+  private void addLiveRegions(String name, List input, List output) {
      for (Iterator itr = input.iterator(); itr.hasNext();) {
         MemRegion reg = (MemRegion) itr.next();
         Address top = reg.end();
@@ -386,6 +386,9 @@ public class ObjectHeap {
         }
         output.add(top);
         output.add(bottom);
+        if (DEBUG) {
+          System.err.println("Live region: " + name + ": " + bottom + ", " + top);
+        }
      }
   }
 
@@ -395,7 +398,7 @@ public class ObjectHeap {
      }
 
      public void doSpace(Space s) {
-        addLiveRegions(s.getLiveRegions(), liveRegions);
+        addLiveRegions(s.toString(), s.getLiveRegions(), liveRegions);
      }
      private List liveRegions;
   }
@@ -426,11 +429,11 @@ public class ObjectHeap {
        ParallelScavengeHeap psh = (ParallelScavengeHeap) heap;
        PSYoungGen youngGen = psh.youngGen();
        // Add eden space
-       addLiveRegions(youngGen.edenSpace().getLiveRegions(), liveRegions);
+       addLiveRegions("eden", youngGen.edenSpace().getLiveRegions(), liveRegions);
        // Add from-space but not to-space
-       addLiveRegions(youngGen.fromSpace().getLiveRegions(), liveRegions);
+       addLiveRegions("from", youngGen.fromSpace().getLiveRegions(), liveRegions);
        PSOldGen oldGen = psh.oldGen();
-       addLiveRegions(oldGen.objectSpace().getLiveRegions(), liveRegions);
+       addLiveRegions("old ", oldGen.objectSpace().getLiveRegions(), liveRegions);
     } else if (heap instanceof G1CollectedHeap) {
         G1CollectedHeap g1h = (G1CollectedHeap) heap;
         g1h.heapRegionIterate(lrc);
@@ -451,23 +454,27 @@ public class ObjectHeap {
 
     if (VM.getVM().getUseTLAB()) {
       for (JavaThread thread = VM.getVM().getThreads().first(); thread != null; thread = thread.next()) {
-        if (thread.isJavaThread()) {
-          ThreadLocalAllocBuffer tlab = thread.tlab();
-          if (tlab.start() != null) {
-            if ((tlab.top() == null) || (tlab.end() == null)) {
-              System.err.print("Warning: skipping invalid TLAB for thread ");
+        ThreadLocalAllocBuffer tlab = thread.tlab();
+        if (tlab.start() != null) {
+          if ((tlab.top() == null) || (tlab.end() == null)) {
+            System.err.print("Warning: skipping invalid TLAB for thread ");
+            thread.printThreadIDOn(System.err);
+            System.err.println();
+          } else {
+            if (DEBUG) {
+              System.err.print("TLAB for " + thread.getThreadName() + ", #");
               thread.printThreadIDOn(System.err);
-              System.err.println();
-            } else {
-              // Go from:
-              //  - below start() to start()
-              //  - start() to top()
-              //  - end() and above
-              liveRegions.add(tlab.start());
-              liveRegions.add(tlab.start());
-              liveRegions.add(tlab.top());
-              liveRegions.add(tlab.hardEnd());
+              System.err.print(": ");
+              tlab.printOn(System.err);
             }
+            // Go from:
+            //  - below start() to start()
+            //  - start() to top()
+            //  - end() and above
+            liveRegions.add(tlab.start());
+            liveRegions.add(tlab.start());
+            liveRegions.add(tlab.top());
+            liveRegions.add(tlab.hardEnd());
           }
         }
       }
@@ -480,6 +487,15 @@ public class ObjectHeap {
       Assert.that(liveRegions.size() % 2 == 0, "Must have even number of region boundaries");
     }
 
+    if (DEBUG) {
+      System.err.println("liveRegions:");
+      for (int i = 0; i < liveRegions.size(); i += 2) {
+          Address bottom = (Address) liveRegions.get(i);
+          Address top    = (Address) liveRegions.get(i+1);
+          System.err.println(" " + bottom + " - " + top);
+      }
+    }
+
     return liveRegions;
   }
 

agent/src/share/classes/sun/jvm/hotspot/runtime/ThreadLocalAllocBuffer.java

@@ -109,6 +109,6 @@ public class ThreadLocalAllocBuffer extends VMObject {
 
   public void printOn(PrintStream tty) {
     tty.println(" [" + start() + "," +
-                top() + "," + end() + ")");
+                top() + "," + end() + ",{" + hardEnd() + "})");
   }
 }

make/hotspot_version

@@ -35,7 +35,7 @@ HOTSPOT_VM_COPYRIGHT=Copyright 2013
 
 HS_MAJOR_VER=25
 HS_MINOR_VER=0
-HS_BUILD_NUMBER=62
+HS_BUILD_NUMBER=63
 
 JDK_MAJOR_VER=1
 JDK_MINOR_VER=8

src/cpu/x86/vm/frame_x86.cpp

@@ -94,13 +94,6 @@ bool frame::safe_for_sender(JavaThread *thread) {
     // other generic buffer blobs are more problematic so we just assume they are
     // ok. adapter blobs never have a frame complete and are never ok.
 
-    // check for a valid frame_size, otherwise we are unlikely to get a valid sender_pc
-
-    if (!Interpreter::contains(_pc) && _cb->frame_size() <= 0) {
-      //assert(0, "Invalid frame_size");
-      return false;
-    }
-
     if (!_cb->is_frame_complete_at(_pc)) {
       if (_cb->is_nmethod() || _cb->is_adapter_blob() || _cb->is_runtime_stub()) {
         return false;
@@ -144,6 +137,11 @@ bool frame::safe_for_sender(JavaThread *thread) {
       // must be some sort of compiled/runtime frame
       // fp does not have to be safe (although it could be check for c1?)
 
+      // check for a valid frame_size, otherwise we are unlikely to get a valid sender_pc
+      if (_cb->frame_size() <= 0) {
+        return false;
+      }
+
       sender_sp = _unextended_sp + _cb->frame_size();
       // On Intel the return_address is always the word on the stack
       sender_pc = (address) *(sender_sp-1);

src/share/vm/code/compiledIC.cpp

@@ -418,7 +418,7 @@ void CompiledIC::compute_monomorphic_entry(methodHandle method,
                                            TRAPS) {
   nmethod* method_code = method->code();
   address entry = NULL;
-  if (method_code != NULL) {
+  if (method_code != NULL && method_code->is_in_use()) {
     // Call to compiled code
     if (static_bound || is_optimized) {
       entry      = method_code->verified_entry_point();
@@ -545,7 +545,7 @@ void CompiledStaticCall::set(const StaticCallInfo& info) {
 void CompiledStaticCall::compute_entry(methodHandle m, StaticCallInfo& info) {
   nmethod* m_code = m->code();
   info._callee = m;
-  if (m_code != NULL) {
+  if (m_code != NULL && m_code->is_in_use()) {
     info._to_interpreter = false;
     info._entry  = m_code->verified_entry_point();
   } else {

src/share/vm/code/nmethod.cpp

@@ -459,7 +459,7 @@ const char* nmethod::compile_kind() const {
 
 // Fill in default values for various flag fields
 void nmethod::init_defaults() {
-  _state                      = alive;
+  _state                      = in_use;
   _marked_for_reclamation     = 0;
   _has_flushed_dependencies   = 0;
   _has_unsafe_access          = 0;
@@ -1660,8 +1660,8 @@ void nmethod::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred)
           CompiledICHolder* cichk_oop = ic->cached_icholder();
           if (cichk_oop->holder_method()->method_holder()->is_loader_alive(is_alive) &&
               cichk_oop->holder_klass()->is_loader_alive(is_alive)) {
-              continue;
-            }
+            continue;
+          }
         } else {
           Metadata* ic_oop = ic->cached_metadata();
           if (ic_oop != NULL) {
@@ -1677,8 +1677,8 @@ void nmethod::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred)
               ShouldNotReachHere();
             }
           }
-          }
-          ic->set_to_clean();
+        }
+        ic->set_to_clean();
       }
     }
   }
@@ -2393,8 +2393,8 @@ void nmethod::verify() {
 
 void nmethod::verify_interrupt_point(address call_site) {
   // Verify IC only when nmethod installation is finished.
-  bool is_installed = (method()->code() == this) // nmethod is in state 'alive' and installed
-                      || !this->is_in_use();     // nmethod is installed, but not in 'alive' state
+  bool is_installed = (method()->code() == this) // nmethod is in state 'in_use' and installed
+                      || !this->is_in_use();     // nmethod is installed, but not in 'in_use' state
   if (is_installed) {
     Thread *cur = Thread::current();
     if (CompiledIC_lock->owner() == cur ||

src/share/vm/code/nmethod.hpp

@@ -184,11 +184,12 @@ class nmethod : public CodeBlob {
   bool _oops_are_stale;  // indicates that it's no longer safe to access oops section
 #endif
 
-  enum { alive        = 0,
-         not_entrant  = 1, // uncommon trap has happened but activations may still exist
-         zombie       = 2,
-         unloaded     = 3 };
-
+  enum { in_use       = 0,   // executable nmethod
+         not_entrant  = 1,   // marked for deoptimization but activations may still exist,
+                             // will be transformed to zombie when all activations are gone
+         zombie       = 2,   // no activations exist, nmethod is ready for purge
+         unloaded     = 3 }; // there should be no activations, should not be called,
+                             // will be transformed to zombie immediately
 
   jbyte _scavenge_root_state;
 
@@ -407,8 +408,8 @@ class nmethod : public CodeBlob {
   address verified_entry_point() const            { return _verified_entry_point;    } // if klass is correct
 
   // flag accessing and manipulation
-  bool  is_in_use() const                         { return _state == alive; }
-  bool  is_alive() const                          { return _state == alive || _state == not_entrant; }
+  bool  is_in_use() const                         { return _state == in_use; }
+  bool  is_alive() const                          { return _state == in_use || _state == not_entrant; }
   bool  is_not_entrant() const                    { return _state == not_entrant; }
   bool  is_zombie() const                         { return _state == zombie; }
   bool  is_unloaded() const                       { return _state == unloaded;   }

src/share/vm/gc_implementation/g1/concurrentG1Refine.cpp

@@ -27,6 +27,7 @@
 #include "gc_implementation/g1/concurrentG1RefineThread.hpp"
 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
 #include "gc_implementation/g1/g1HotCardCache.hpp"
+#include "runtime/java.hpp"
 
 ConcurrentG1Refine::ConcurrentG1Refine(G1CollectedHeap* g1h) :
   _threads(NULL), _n_threads(0),
@@ -62,6 +63,10 @@ ConcurrentG1Refine::ConcurrentG1Refine(G1CollectedHeap* g1h) :
   for (int i = _n_threads - 1; i >= 0; i--) {
     ConcurrentG1RefineThread* t = new ConcurrentG1RefineThread(this, next, worker_id_offset, i);
     assert(t != NULL, "Conc refine should have been created");
+    if (t->osthread() == NULL) {
+        vm_shutdown_during_initialization("Could not create ConcurrentG1RefineThread");
+    }
+
     assert(t->cg1r() == this, "Conc refine thread should refer to this");
     _threads[i] = t;
     next = t;

src/share/vm/gc_implementation/g1/concurrentMark.cpp

@@ -553,6 +553,9 @@ ConcurrentMark::ConcurrentMark(G1CollectedHeap* g1h, ReservedSpace heap_rs) :
   _cmThread = new ConcurrentMarkThread(this);
   assert(cmThread() != NULL, "CM Thread should have been created");
   assert(cmThread()->cm() != NULL, "CM Thread should refer to this cm");
+  if (_cmThread->osthread() == NULL) {
+      vm_shutdown_during_initialization("Could not create ConcurrentMarkThread");
+  }
 
   assert(CGC_lock != NULL, "Where's the CGC_lock?");
   assert(_markBitMap1.covers(heap_rs), "_markBitMap1 inconsistency");

src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp

@@ -2433,20 +2433,6 @@ void PSParallelCompact::marking_phase(ParCompactionManager* cm,
   _gc_tracer.report_object_count_after_gc(is_alive_closure());
 }
 
-void PSParallelCompact::follow_klass(ParCompactionManager* cm, Klass* klass) {
-  ClassLoaderData* cld = klass->class_loader_data();
-  // The actual processing of the klass is done when we
-  // traverse the list of Klasses in the class loader data.
-  PSParallelCompact::follow_class_loader(cm, cld);
-}
-
-void PSParallelCompact::adjust_klass(ParCompactionManager* cm, Klass* klass) {
-  ClassLoaderData* cld = klass->class_loader_data();
-  // The actual processing of the klass is done when we
-  // traverse the list of Klasses in the class loader data.
-  PSParallelCompact::adjust_class_loader(cm, cld);
-}
-
 void PSParallelCompact::follow_class_loader(ParCompactionManager* cm,
                                             ClassLoaderData* cld) {
   PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
@@ -2455,13 +2441,6 @@ void PSParallelCompact::follow_class_loader(ParCompactionManager* cm,
   cld->oops_do(&mark_and_push_closure, &follow_klass_closure, true);
 }
 
-void PSParallelCompact::adjust_class_loader(ParCompactionManager* cm,
-                                            ClassLoaderData* cld) {
-  cld->oops_do(PSParallelCompact::adjust_pointer_closure(),
-               PSParallelCompact::adjust_klass_closure(),
-               true);
-}
-
 // This should be moved to the shared markSweep code!
 class PSAlwaysTrueClosure: public BoolObjectClosure {
 public:

src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.hpp

@@ -1200,13 +1200,10 @@ class PSParallelCompact : AllStatic {
                                                       T* p);
   template <class T> static inline void adjust_pointer(T* p);
 
-  static void follow_klass(ParCompactionManager* cm, Klass* klass);
-  static void adjust_klass(ParCompactionManager* cm, Klass* klass);
+  static inline void follow_klass(ParCompactionManager* cm, Klass* klass);
 
   static void follow_class_loader(ParCompactionManager* cm,
                                   ClassLoaderData* klass);
-  static void adjust_class_loader(ParCompactionManager* cm,
-                                  ClassLoaderData* klass);
 
   // Compaction support.
   // Return true if p is in the range [beg_addr, end_addr).
@@ -1380,6 +1377,11 @@ inline void PSParallelCompact::adjust_pointer(T* p) {
   }
 }
 
+inline void PSParallelCompact::follow_klass(ParCompactionManager* cm, Klass* klass) {
+  oop holder = klass->klass_holder();
+  PSParallelCompact::mark_and_push(cm, &holder);
+}
+
 template <class T>
 inline void PSParallelCompact::KeepAliveClosure::do_oop_work(T* p) {
   mark_and_push(_compaction_manager, p);

src/share/vm/interpreter/linkResolver.cpp

@@ -242,8 +242,20 @@ void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, i
 
 // Look up method in klasses, including static methods
 // Then look up local default methods
-void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, bool checkpolymorphism, TRAPS) {
+void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, bool checkpolymorphism, bool in_imethod_resolve, TRAPS) {
   Method* result_oop = klass->uncached_lookup_method(name, signature);
+
+  // JDK 8, JVMS 5.4.3.4: Interface method resolution should
+  // ignore static and non-public methods of java.lang.Object,
+  // like clone, finalize, registerNatives.
+  if (in_imethod_resolve &&
+      result_oop != NULL &&
+      klass->is_interface() &&
+      (result_oop->is_static() || !result_oop->is_public()) &&
+      result_oop->method_holder() == SystemDictionary::Object_klass()) {
+    result_oop = NULL;
+  }
+
   if (result_oop == NULL) {
     Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods();
     if (default_methods != NULL) {
@@ -420,28 +432,18 @@ void LinkResolver::check_method_accessability(KlassHandle ref_klass,
 
   AccessFlags flags = sel_method->access_flags();
 
-  // Special case #1:  arrays always override "clone". JVMS 2.15.
+  // Special case:  arrays always override "clone". JVMS 2.15.
   // If the resolved klass is an array class, and the declaring class
   // is java.lang.Object and the method is "clone", set the flags
   // to public.
-  // Special case #2:  If the resolved klass is an interface, and
-  // the declaring class is java.lang.Object, and the method is
-  // "clone" or "finalize", set the flags to public. If the
-  // resolved interface does not contain "clone" or "finalize"
-  // methods, the method/interface method resolution looks to
-  // the interface's super class, java.lang.Object.  With JDK 8
-  // interface accessability check requirement, special casing
-  // this scenario is necessary to avoid an IAE.
   //
-  // We'll check for each method name first and then java.lang.Object
-  // to best short-circuit out of these tests.
-  if (((sel_method->name() == vmSymbols::clone_name() &&
-        (resolved_klass->oop_is_array() || resolved_klass->is_interface())) ||
-       (sel_method->name() == vmSymbols::finalize_method_name() &&
-        resolved_klass->is_interface())) &&
-      sel_klass() == SystemDictionary::Object_klass()) {
+  // We'll check for the method name first, as that's most likely
+  // to be false (so we'll short-circuit out of these tests).
+  if (sel_method->name() == vmSymbols::clone_name() &&
+      sel_klass() == SystemDictionary::Object_klass() &&
+      resolved_klass->oop_is_array()) {
     // We need to change "protected" to "public".
-    assert(flags.is_protected(), "clone or finalize not protected?");
+    assert(flags.is_protected(), "clone not protected?");
     jint new_flags = flags.as_int();
     new_flags = new_flags & (~JVM_ACC_PROTECTED);
     new_flags = new_flags | JVM_ACC_PUBLIC;
@@ -531,7 +533,7 @@ void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle res
   }
 
   // 2. lookup method in resolved klass and its super klasses
-  lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, true, CHECK);
+  lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, true, false, CHECK);
 
   if (resolved_method.is_null()) { // not found in the class hierarchy
     // 3. lookup method in all the interfaces implemented by the resolved klass
@@ -628,7 +630,7 @@ void LinkResolver::resolve_interface_method(methodHandle& resolved_method,
 
   // lookup method in this interface or its super, java.lang.Object
   // JDK8: also look for static methods
-  lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, false, CHECK);
+  lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, false, true, CHECK);
 
   if (resolved_method.is_null()) {
     // lookup method in all the super-interfaces
@@ -943,8 +945,17 @@ void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method
     Klass *klass_to_check = !InstanceKlass::cast(current_klass())->is_anonymous() ?
                                   current_klass() :
                                   InstanceKlass::cast(current_klass())->host_klass();
-
-    if (!InstanceKlass::cast(klass_to_check)->is_same_or_direct_interface(resolved_klass())) {
+    // As of the fix for 4486457 we disable verification for all of the
+    // dynamically-generated bytecodes associated with the 1.4
+    // reflection implementation, not just those associated with
+    // sun/reflect/SerializationConstructorAccessor.
+    bool is_reflect = JDK_Version::is_gte_jdk14x_version() &&
+                      UseNewReflection &&
+                      klass_to_check->is_subclass_of(
+                        SystemDictionary::reflect_MagicAccessorImpl_klass());
+
+    if (!is_reflect &&
+        !InstanceKlass::cast(klass_to_check)->is_same_or_direct_interface(resolved_klass())) {
       ResourceMark rm(THREAD);
       char buf[200];
       jio_snprintf(buf, sizeof(buf),

src/share/vm/interpreter/linkResolver.hpp

@@ -124,7 +124,7 @@ class LinkResolver: AllStatic {
   friend class klassItable;
 
  private:
-  static void lookup_method_in_klasses          (methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, bool checkpolymorphism, TRAPS);
+  static void lookup_method_in_klasses          (methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, bool checkpolymorphism, bool in_imethod_resolve, TRAPS);
   static void lookup_instance_method_in_klasses (methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS);
   static void lookup_method_in_interfaces       (methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS);
   static void lookup_polymorphic_method         (methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature,

src/share/vm/memory/metaspace.cpp

@@ -287,7 +287,7 @@ class VirtualSpaceNode : public CHeapObj<mtClass> {
   VirtualSpace* virtual_space() const { return (VirtualSpace*) &_virtual_space; }
 
   // Returns true if "word_size" is available in the VirtualSpace
-  bool is_available(size_t word_size) { return _top + word_size <= end(); }
+  bool is_available(size_t word_size) { return word_size <= pointer_delta(end(), _top, sizeof(MetaWord)); }
 
   MetaWord* top() const { return _top; }
   void inc_top(size_t word_size) { _top += word_size; }
@@ -3641,10 +3641,82 @@ class TestVirtualSpaceNodeTest {
     }
 
   }
+
+#define assert_is_available_positive(word_size) \
+  assert(vsn.is_available(word_size), \
+    err_msg(#word_size ": " PTR_FORMAT " bytes were not available in " \
+            "VirtualSpaceNode [" PTR_FORMAT ", " PTR_FORMAT ")", \
+            (uintptr_t)(word_size * BytesPerWord), vsn.bottom(), vsn.end()));
+
+#define assert_is_available_negative(word_size) \
+  assert(!vsn.is_available(word_size), \
+    err_msg(#word_size ": " PTR_FORMAT " bytes should not be available in " \
+            "VirtualSpaceNode [" PTR_FORMAT ", " PTR_FORMAT ")", \
+            (uintptr_t)(word_size * BytesPerWord), vsn.bottom(), vsn.end()));
+
+  static void test_is_available_positive() {
+    // Reserve some memory.
+    VirtualSpaceNode vsn(os::vm_allocation_granularity());
+    assert(vsn.initialize(), "Failed to setup VirtualSpaceNode");
+
+    // Commit some memory.
+    size_t commit_word_size = os::vm_allocation_granularity() / BytesPerWord;
+    bool expanded = vsn.expand_by(commit_word_size, commit_word_size);
+    assert(expanded, "Failed to commit");
+
+    // Check that is_available accepts the committed size.
+    assert_is_available_positive(commit_word_size);
+
+    // Check that is_available accepts half the committed size.
+    size_t expand_word_size = commit_word_size / 2;
+    assert_is_available_positive(expand_word_size);
+  }
+
+  static void test_is_available_negative() {
+    // Reserve some memory.
+    VirtualSpaceNode vsn(os::vm_allocation_granularity());
+    assert(vsn.initialize(), "Failed to setup VirtualSpaceNode");
+
+    // Commit some memory.
+    size_t commit_word_size = os::vm_allocation_granularity() / BytesPerWord;
+    bool expanded = vsn.expand_by(commit_word_size, commit_word_size);
+    assert(expanded, "Failed to commit");
+
+    // Check that is_available doesn't accept a too large size.
+    size_t two_times_commit_word_size = commit_word_size * 2;
+    assert_is_available_negative(two_times_commit_word_size);
+  }
+
+  static void test_is_available_overflow() {
+    // Reserve some memory.
+    VirtualSpaceNode vsn(os::vm_allocation_granularity());
+    assert(vsn.initialize(), "Failed to setup VirtualSpaceNode");
+
+    // Commit some memory.
+    size_t commit_word_size = os::vm_allocation_granularity() / BytesPerWord;
+    bool expanded = vsn.expand_by(commit_word_size, commit_word_size);
+    assert(expanded, "Failed to commit");
+
+    // Calculate a size that will overflow the virtual space size.
+    void* virtual_space_max = (void*)(uintptr_t)-1;
+    size_t bottom_to_max = pointer_delta(virtual_space_max, vsn.bottom(), 1);
+    size_t overflow_size = bottom_to_max + BytesPerWord;
+    size_t overflow_word_size = overflow_size / BytesPerWord;
+
+    // Check that is_available can handle the overflow.
+    assert_is_available_negative(overflow_word_size);
+  }
+
+  static void test_is_available() {
+    TestVirtualSpaceNodeTest::test_is_available_positive();
+    TestVirtualSpaceNodeTest::test_is_available_negative();
+    TestVirtualSpaceNodeTest::test_is_available_overflow();
+  }
 };
 
 void TestVirtualSpaceNode_test() {
   TestVirtualSpaceNodeTest::test();
+  TestVirtualSpaceNodeTest::test_is_available();
 }
 
 #endif

src/share/vm/oops/instanceClassLoaderKlass.cpp

@@ -150,10 +150,6 @@ void InstanceClassLoaderKlass::oop_push_contents(PSPromotionManager* pm, oop obj
 
 int InstanceClassLoaderKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
   InstanceKlass::oop_update_pointers(cm, obj);
-  ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj);
-  if (loader_data != NULL) {
-    PSParallelCompact::adjust_class_loader(cm, loader_data);
-  }
   return size_helper();
 }
 #endif // INCLUDE_ALL_GCS

src/share/vm/oops/instanceKlass.cpp

@@ -2199,7 +2199,6 @@ int InstanceKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
     obj, \
     PSParallelCompact::adjust_pointer(p), \
     assert_is_in)
-  obj->update_header(cm);
   return size;
 }
 

src/share/vm/oops/instanceMirrorKlass.cpp

@@ -155,8 +155,13 @@ void InstanceMirrorKlass::oop_follow_contents(oop obj) {
   // Follow the klass field in the mirror.
   Klass* klass = java_lang_Class::as_Klass(obj);
   if (klass != NULL) {
-    // For anonymous classes we need to handle the class loader data,
-    // otherwise it won't be claimed and can be unloaded.
+    // An anonymous class doesn't have its own class loader, so the call
+    // to follow_klass will mark and push its java mirror instead of the
+    // class loader. When handling the java mirror for an anonymous class
+    // we need to make sure its class loader data is claimed, this is done
+    // by calling follow_class_loader explicitly. For non-anonymous classes
+    // the call to follow_class_loader is made when the class loader itself
+    // is handled.
     if (klass->oop_is_instance() && InstanceKlass::cast(klass)->is_anonymous()) {
       MarkSweep::follow_class_loader(klass->class_loader_data());
     } else {
@@ -183,7 +188,18 @@ void InstanceMirrorKlass::oop_follow_contents(ParCompactionManager* cm,
   // Follow the klass field in the mirror.
   Klass* klass = java_lang_Class::as_Klass(obj);
   if (klass != NULL) {
-    PSParallelCompact::follow_klass(cm, klass);
+    // An anonymous class doesn't have its own class loader, so the call
+    // to follow_klass will mark and push its java mirror instead of the
+    // class loader. When handling the java mirror for an anonymous class
+    // we need to make sure its class loader data is claimed, this is done
+    // by calling follow_class_loader explicitly. For non-anonymous classes
+    // the call to follow_class_loader is made when the class loader itself
+    // is handled.
+    if (klass->oop_is_instance() && InstanceKlass::cast(klass)->is_anonymous()) {
+      PSParallelCompact::follow_class_loader(cm, klass->class_loader_data());
+    } else {
+      PSParallelCompact::follow_klass(cm, klass);
+    }
   } else {
     // If klass is NULL then this a mirror for a primitive type.
     // We don't have to follow them, since they are handled as strong
@@ -332,17 +348,6 @@ int InstanceMirrorKlass::oop_update_pointers(ParCompactionManager* cm, oop obj)
   int size = oop_size(obj);
   InstanceKlass::oop_update_pointers(cm, obj);
 
-  // Follow the klass field in the mirror.
-  Klass* klass = java_lang_Class::as_Klass(obj);
-  if (klass != NULL) {
-    PSParallelCompact::adjust_klass(cm, klass);
-  } else {
-    // If klass is NULL then this a mirror for a primitive type.
-    // We don't have to follow them, since they are handled as strong
-    // roots in Universe::oops_do.
-    assert(java_lang_Class::is_primitive(obj), "Sanity check");
-  }
-
   InstanceMirrorKlass_OOP_ITERATE(                                            \
     start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj),\
     PSParallelCompact::adjust_pointer(p),                                     \

src/share/vm/oops/objArrayKlass.cpp

@@ -587,7 +587,6 @@ int ObjArrayKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
   assert (obj->is_objArray(), "obj must be obj array");
   objArrayOop a = objArrayOop(obj);
   int size = a->object_size();
-  a->update_header(cm);
   ObjArrayKlass_OOP_ITERATE(a, p, PSParallelCompact::adjust_pointer(p))
   return size;
 }

src/share/vm/oops/oop.hpp

@@ -328,11 +328,6 @@ class oopDesc {
   // return the size of this oop.  This is used by the MarkSweep collector.
   int adjust_pointers();
 
-#if INCLUDE_ALL_GCS
-  // Parallel old
-  void update_header(ParCompactionManager* cm);
-#endif // INCLUDE_ALL_GCS
-
   // mark-sweep support
   void follow_body(int begin, int end);
 

src/share/vm/oops/oop.pcgc.inline.hpp

@@ -80,8 +80,4 @@ inline oop oopDesc::forward_to_atomic(oop p) {
   return forwardee();
 }
 
-inline void oopDesc::update_header(ParCompactionManager* cm) {
-  PSParallelCompact::adjust_klass(cm, klass());
-}
-
 #endif // SHARE_VM_OOPS_OOP_PCGC_INLINE_HPP

src/share/vm/opto/memnode.cpp

@@ -2071,6 +2071,11 @@ const Type *LoadNode::klass_value_common( PhaseTransform *phase ) const {
       if (t != NULL) {
         // constant oop => constant klass
         if (offset == java_lang_Class::array_klass_offset_in_bytes()) {
+          if (t->is_void()) {
+            // We cannot create a void array.  Since void is a primitive type return null
+            // klass.  Users of this result need to do a null check on the returned klass.
+            return TypePtr::NULL_PTR;
+          }
           return TypeKlassPtr::make(ciArrayKlass::make(t));
         }
         if (!t->is_klass()) {

src/share/vm/runtime/reflection.cpp

@@ -537,15 +537,26 @@ bool Reflection::verify_field_access(Klass* current_class,
     return true;
   }
 
+  Klass* host_class = current_class;
+  while (host_class->oop_is_instance() &&
+         InstanceKlass::cast(host_class)->is_anonymous()) {
+    Klass* next_host_class = InstanceKlass::cast(host_class)->host_klass();
+    if (next_host_class == NULL)  break;
+    host_class = next_host_class;
+  }
+  if (host_class == field_class) {
+    return true;
+  }
+
   if (access.is_protected()) {
     if (!protected_restriction) {
-      // See if current_class is a subclass of field_class
-      if (current_class->is_subclass_of(field_class)) {
+      // See if current_class (or outermost host class) is a subclass of field_class
+      if (host_class->is_subclass_of(field_class)) {
         if (access.is_static() || // static fields are ok, see 6622385
             current_class == resolved_class ||
             field_class == resolved_class ||
-            current_class->is_subclass_of(resolved_class) ||
-            resolved_class->is_subclass_of(current_class)) {
+            host_class->is_subclass_of(resolved_class) ||
+            resolved_class->is_subclass_of(host_class)) {
           return true;
         }
       }

src/share/vm/runtime/sharedRuntime.cpp

@@ -1178,12 +1178,12 @@ methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread,
   CodeBlob* caller_cb = caller_frame.cb();
   guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod");
   nmethod* caller_nm = caller_cb->as_nmethod_or_null();
+
   // make sure caller is not getting deoptimized
   // and removed before we are done with it.
   // CLEANUP - with lazy deopt shouldn't need this lock
   nmethodLocker caller_lock(caller_nm);
 
-
   // determine call info & receiver
   // note: a) receiver is NULL for static calls
   //       b) an exception is thrown if receiver is NULL for non-static calls
@@ -1198,6 +1198,11 @@ methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread,
          (!is_virtual && invoke_code == Bytecodes::_invokedynamic) ||
          ( is_virtual && invoke_code != Bytecodes::_invokestatic ), "inconsistent bytecode");
 
+  // We do not patch the call site if the caller nmethod has been made non-entrant.
+  if (!caller_nm->is_in_use()) {
+    return callee_method;
+  }
+
 #ifndef PRODUCT
   // tracing/debugging/statistics
   int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) :
@@ -1237,6 +1242,10 @@ methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread,
   // Make sure the callee nmethod does not get deoptimized and removed before
   // we are done patching the code.
   nmethod* callee_nm = callee_method->code();
+  if (callee_nm != NULL && !callee_nm->is_in_use()) {
+    // Patch call site to C2I adapter if callee nmethod is deoptimized or unloaded.
+    callee_nm = NULL;
+  }
   nmethodLocker nl_callee(callee_nm);
 #ifdef ASSERT
   address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below
@@ -1258,15 +1267,24 @@ methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread,
   {
     MutexLocker ml_patch(CompiledIC_lock);
 
+    // Lock blocks for safepoint during which both nmethods can change state.
+
     // Now that we are ready to patch if the Method* was redefined then
     // don't update call site and let the caller retry.
-
-    if (!callee_method->is_old()) {
+    // Don't update call site if caller nmethod has been made non-entrant
+    // as it is a waste of time.
+    // Don't update call site if callee nmethod was unloaded or deoptimized.
+    // Don't update call site if callee nmethod was replaced by an other nmethod
+    // which may happen when multiply alive nmethod (tiered compilation)
+    // will be supported.
+    if (!callee_method->is_old() && caller_nm->is_in_use() &&
+        (callee_nm == NULL || callee_nm->is_in_use() && (callee_method->code() == callee_nm))) {
 #ifdef ASSERT
       // We must not try to patch to jump to an already unloaded method.
       if (dest_entry_point != 0) {
-        assert(CodeCache::find_blob(dest_entry_point) != NULL,
-               "should not unload nmethod while locked");
+        CodeBlob* cb = CodeCache::find_blob(dest_entry_point);
+        assert((cb != NULL) && cb->is_nmethod() && (((nmethod*)cb) == callee_nm),
+               "should not call unloaded nmethod");
       }
 #endif
       if (is_virtual) {

src/share/vm/utilities/globalDefinitions_gcc.hpp

@@ -174,6 +174,7 @@ typedef uint64_t julong;
 
 inline jint    jint_cast   (jfloat  x)           { return *(jint*   )&x; }
 inline jlong   jlong_cast  (jdouble x)           { return *(jlong*  )&x; }
+inline julong  julong_cast (jdouble x)           { return *(julong* )&x; }
 
 inline jfloat  jfloat_cast (jint    x)           { return *(jfloat* )&x; }
 inline jdouble jdouble_cast(jlong   x)           { return *(jdouble*)&x; }

test/compiler/7141637/SpreadNullArg.java

@@ -46,13 +46,17 @@ public class SpreadNullArg {
       mh_spread_target =
         MethodHandles.lookup().findStatic(SpreadNullArg.class, "target_spread_arg", mt_ref_arg);
       result = (int) mh_spreadInvoker.invokeExact(mh_spread_target, (Object[]) null);
-    } catch(NullPointerException e) {
-      // Expected exception - do nothing!
-    } catch(Throwable e) {
+      throw new Error("Expected IllegalArgumentException was not thrown");
+    } catch (IllegalArgumentException e) {
+      System.out.println("Expected exception : " + e);
+    } catch (Throwable e) {
       throw new Error(e);
     }
 
-    if (result != 42) throw new Error("Expected NullPointerException was not thrown");
+    if (result != 42) {
+      throw new Error("result [" + result
+        + "] != 42 : Expected IllegalArgumentException was not thrown?");
+    }
   }
 
   public static int target_spread_arg(Integer i1) {

test/compiler/reflection/ArrayNewInstanceOfVoid.java

+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8029366
+ * @summary ShouldNotReachHere error when creating an array with component type of void
+ */
+
+public class ArrayNewInstanceOfVoid {
+    public static void main(String[] args) {
+        for (int i = 0; i < 100_000; i++) {
+            test();
+        }
+    }
+
+    private static void test() {
+        try {
+            java.lang.reflect.Array.newInstance(void.class, 2);
+        } catch (IllegalArgumentException e) {
+            // expected
+        }
+    }
+}

test/compiler/regalloc/C1ObjectSpillInLogicOp.java

@@ -34,8 +34,9 @@
  */
 
 import java.util.concurrent.atomic.*;
-class C1ObjectSpillInLogicOp {
-  static public void main(String[] args) {
+
+public class C1ObjectSpillInLogicOp {
+  public static void main(String[] args) {
     AtomicReferenceArray<Integer> x = new AtomicReferenceArray(128);
     Integer y = new Integer(0);
     for (int i = 0; i < 50000; i++) {

test/runtime/8024804/RegisterNatives.java

@@ -22,10 +22,10 @@
  */
 
 /*
- * @ignore 8028741
  * @test
  * @bug 8024804
- * @summary registerNatives() interface resolution should receive IAE
+ * @bug 8028741
+ * @summary interface method resolution should skip finding j.l.Object's registerNatives() and succeed in selecting class B's registerNatives()
  * @run main RegisterNatives
  */
 public class RegisterNatives {
@@ -38,10 +38,10 @@ public class RegisterNatives {
     try {
       val.registerNatives();
     } catch (IllegalAccessError e) {
-      System.out.println("TEST PASSES - according to current JVM spec, IAE expected\n");
-      return;
+      System.out.println("TEST FAILS - JDK 8 JVMS, static and non-public methods of j.l.Object should be ignored during interface method resolution\n");
+      e.printStackTrace();
+      throw e;
     }
-    System.out.println("TEST FAILS - no IAE resulted\n");
-    System.exit(1);
+    System.out.println("TEST PASSES - no IAE resulted\n");
   }
 }