changeset 6536:7a913131605d

Merge
author lana
date Thu, 12 Jun 2014 19:03:25 -0700
parents 871fd1285484 83be138aecba
children d4cffb3ae621 fedc61f9456a
files test/gc/g1/TestStringDeduplicationMemoryUsage.java
diffstat 51 files changed, 1077 insertions(+), 284 deletions(-) [+]
line wrap: on
line diff
--- a/make/bsd/makefiles/universal.gmk	Thu Jun 12 18:42:33 2014 +0000
+++ b/make/bsd/makefiles/universal.gmk	Thu Jun 12 19:03:25 2014 -0700
@@ -74,19 +74,21 @@
 
 
 # Replace arch specific binaries with universal binaries
+# Do not touch jre/lib/{client,server}/libjsig.$(LIBRARY_SUFFIX)
+# That symbolic link belongs to the 'jdk' build.
 export_universal:
 	$(RM) -r $(EXPORT_PATH)/jre/lib/{i386,amd64}
 	$(RM) -r $(JDK_IMAGE_DIR)/jre/lib/{i386,amd64}
-	$(RM) $(JDK_IMAGE_DIR)/jre/lib/{client,server}/libjsig.$(LIBRARY_SUFFIX)
 	($(CD) $(EXPORT_PATH) && \
 	  $(TAR) -cf - *) | \
 	  ($(CD) $(JDK_IMAGE_DIR) && $(TAR) -xpf -)
 
 
 # Overlay universal binaries
+# Do not touch jre/lib/{client,server}/libjsig.$(LIBRARY_SUFFIX)
+# That symbolic link belongs to the 'jdk' build.
 copy_universal:
 	$(RM) -r $(JDK_IMAGE_DIR)$(COPY_SUBDIR)/jre/lib/{i386,amd64}
-	$(RM) $(JDK_IMAGE_DIR)$(COPY_SUBDIR)/jre/lib/{client,server}/libjsig.$(LIBRARY_SUFFIX)
 	($(CD) $(EXPORT_PATH)$(COPY_SUBDIR) && \
 	  $(TAR) -cf - *) | \
 	  ($(CD) $(JDK_IMAGE_DIR)$(COPY_SUBDIR) && $(TAR) -xpf -)
--- a/src/share/vm/classfile/classFileParser.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/classfile/classFileParser.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -4359,9 +4359,15 @@
   Method* m = k->lookup_method(vmSymbols::finalize_method_name(),
                                  vmSymbols::void_method_signature());
   if (m != NULL && !m->is_empty_method()) {
-    f = true;
+      f = true;
   }
-  assert(f == k->has_finalizer(), "inconsistent has_finalizer");
+
+  // Spec doesn't prevent agent from redefinition of empty finalizer.
+  // Despite the fact that it's generally bad idea and redefined finalizer
+  // will not work as expected we shouldn't abort vm in this case
+  if (!k->has_redefined_this_or_super()) {
+    assert(f == k->has_finalizer(), "inconsistent has_finalizer");
+  }
 #endif
 
   // Check if this klass supports the java.lang.Cloneable interface
--- a/src/share/vm/classfile/javaClasses.hpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/classfile/javaClasses.hpp	Thu Jun 12 19:03:25 2014 -0700
@@ -1181,7 +1181,7 @@
   static oop              target(         oop site)             { return site->obj_field(             _target_offset);         }
   static void         set_target(         oop site, oop target) {        site->obj_field_put(         _target_offset, target); }
 
-  static volatile oop     target_volatile(oop site)             { return site->obj_field_volatile(    _target_offset);         }
+  static volatile oop     target_volatile(oop site)             { return oop((oopDesc *)(site->obj_field_volatile(_target_offset))); }
   static void         set_target_volatile(oop site, oop target) {        site->obj_field_put_volatile(_target_offset, target); }
 
   // Testers
--- a/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -311,8 +311,7 @@
                              _cmsGen->refs_discovery_is_mt(),     // mt discovery
                              (int) MAX2(ConcGCThreads, ParallelGCThreads), // mt discovery degree
                              _cmsGen->refs_discovery_is_atomic(), // discovery is not atomic
-                             &_is_alive_closure,                  // closure for liveness info
-                             false);                              // next field updates do not need write barrier
+                             &_is_alive_closure);                 // closure for liveness info
     // Initialize the _ref_processor field of CMSGen
     _cmsGen->set_ref_processor(_ref_processor);
 
--- a/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -2246,12 +2246,9 @@
                                 // degree of mt discovery
                            false,
                                 // Reference discovery is not atomic
-                           &_is_alive_closure_cm,
+                           &_is_alive_closure_cm);
                                 // is alive closure
                                 // (for efficiency/performance)
-                           true);
-                                // Setting next fields of discovered
-                                // lists requires a barrier.
 
   // STW ref processor
   _ref_processor_stw =
@@ -2266,12 +2263,9 @@
                                 // degree of mt discovery
                            true,
                                 // Reference discovery is atomic
-                           &_is_alive_closure_stw,
+                           &_is_alive_closure_stw);
                                 // is alive closure
                                 // (for efficiency/performance)
-                           false);
-                                // Setting next fields of discovered
-                                // lists does not require a barrier.
 }
 
 size_t G1CollectedHeap::capacity() const {
--- a/src/share/vm/gc_implementation/parNew/parNewGeneration.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/gc_implementation/parNew/parNewGeneration.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -1636,8 +1636,7 @@
                              refs_discovery_is_mt(),     // mt discovery
                              (int) ParallelGCThreads,    // mt discovery degree
                              refs_discovery_is_atomic(), // atomic_discovery
-                             NULL,                       // is_alive_non_header
-                             false);                     // write barrier for next field updates
+                             NULL);                      // is_alive_non_header
   }
 }
 
--- a/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -854,8 +854,7 @@
                            true,          // mt discovery
                            (int) ParallelGCThreads, // mt discovery degree
                            true,          // atomic_discovery
-                           &_is_alive_closure, // non-header is alive closure
-                           false);        // write barrier for next field updates
+                           &_is_alive_closure); // non-header is alive closure
   _counters = new CollectorCounters("PSParallelCompact", 1);
 
   // Initialize static fields in ParCompactionManager.
--- a/src/share/vm/gc_implementation/parallelScavenge/psScavenge.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/gc_implementation/parallelScavenge/psScavenge.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -864,8 +864,7 @@
                            true,                       // mt discovery
                            (int) ParallelGCThreads,    // mt discovery degree
                            true,                       // atomic_discovery
-                           NULL,                       // header provides liveness info
-                           false);                     // next field updates do not need write barrier
+                           NULL);                      // header provides liveness info
 
   // Cache the cardtable
   BarrierSet* bs = Universe::heap()->barrier_set();
--- a/src/share/vm/memory/allocation.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/memory/allocation.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -563,6 +563,7 @@
   _chunk = new (alloc_failmode, len) Chunk(len);
 
   if (_chunk == NULL) {
+    _chunk = k;                 // restore the previous value of _chunk
     return NULL;
   }
   if (k) k->set_next(_chunk);   // Append new chunk to end of linked list
--- a/src/share/vm/memory/metaspace.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/memory/metaspace.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -1423,6 +1423,17 @@
   return (size_t)Atomic::add_ptr(-(intptr_t)v, &_capacity_until_GC);
 }
 
+void MetaspaceGC::initialize() {
+  // Set the high-water mark to MaxMetapaceSize during VM initializaton since
+  // we can't do a GC during initialization.
+  _capacity_until_GC = MaxMetaspaceSize;
+}
+
+void MetaspaceGC::post_initialize() {
+  // Reset the high-water mark once the VM initialization is done.
+  _capacity_until_GC = MAX2(MetaspaceAux::committed_bytes(), MetaspaceSize);
+}
+
 bool MetaspaceGC::can_expand(size_t word_size, bool is_class) {
   // Check if the compressed class space is full.
   if (is_class && Metaspace::using_class_space()) {
@@ -1443,21 +1454,13 @@
 
 size_t MetaspaceGC::allowed_expansion() {
   size_t committed_bytes = MetaspaceAux::committed_bytes();
+  size_t capacity_until_gc = capacity_until_GC();
+
+  assert(capacity_until_gc >= committed_bytes,
+        err_msg("capacity_until_gc: " SIZE_FORMAT " < committed_bytes: " SIZE_FORMAT,
+                capacity_until_gc, committed_bytes));
 
   size_t left_until_max  = MaxMetaspaceSize - committed_bytes;
-
-  // Always grant expansion if we are initiating the JVM,
-  // or if the GC_locker is preventing GCs.
-  if (!is_init_completed() || GC_locker::is_active_and_needs_gc()) {
-    return left_until_max / BytesPerWord;
-  }
-
-  size_t capacity_until_gc = capacity_until_GC();
-
-  if (capacity_until_gc <= committed_bytes) {
-    return 0;
-  }
-
   size_t left_until_GC = capacity_until_gc - committed_bytes;
   size_t left_to_commit = MIN2(left_until_GC, left_until_max);
 
@@ -1469,7 +1472,15 @@
   uint current_shrink_factor = _shrink_factor;
   _shrink_factor = 0;
 
-  const size_t used_after_gc = MetaspaceAux::capacity_bytes();
+  // Using committed_bytes() for used_after_gc is an overestimation, since the
+  // chunk free lists are included in committed_bytes() and the memory in an
+  // un-fragmented chunk free list is available for future allocations.
+  // However, if the chunk free lists becomes fragmented, then the memory may
+  // not be available for future allocations and the memory is therefore "in use".
+  // Including the chunk free lists in the definition of "in use" is therefore
+  // necessary. Not including the chunk free lists can cause capacity_until_GC to
+  // shrink below committed_bytes() and this has caused serious bugs in the past.
+  const size_t used_after_gc = MetaspaceAux::committed_bytes();
   const size_t capacity_until_GC = MetaspaceGC::capacity_until_GC();
 
   const double minimum_free_percentage = MinMetaspaceFreeRatio / 100.0;
@@ -3094,6 +3105,8 @@
 }
 
 void Metaspace::global_initialize() {
+  MetaspaceGC::initialize();
+
   // Initialize the alignment for shared spaces.
   int max_alignment = os::vm_allocation_granularity();
   size_t cds_total = 0;
@@ -3201,10 +3214,13 @@
     }
   }
 
-  MetaspaceGC::initialize();
   _tracer = new MetaspaceTracer();
 }
 
+void Metaspace::post_initialize() {
+  MetaspaceGC::post_initialize();
+}
+
 Metachunk* Metaspace::get_initialization_chunk(MetadataType mdtype,
                                                size_t chunk_word_size,
                                                size_t chunk_bunch) {
--- a/src/share/vm/memory/metaspace.hpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/memory/metaspace.hpp	Thu Jun 12 19:03:25 2014 -0700
@@ -208,6 +208,7 @@
 
   static void ergo_initialize();
   static void global_initialize();
+  static void post_initialize();
 
   static size_t first_chunk_word_size() { return _first_chunk_word_size; }
   static size_t first_class_chunk_word_size() { return _first_class_chunk_word_size; }
@@ -398,7 +399,8 @@
 
  public:
 
-  static void initialize() { _capacity_until_GC = MetaspaceSize; }
+  static void initialize();
+  static void post_initialize();
 
   static size_t capacity_until_GC();
   static size_t inc_capacity_until_GC(size_t v);
--- a/src/share/vm/memory/referenceProcessor.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/memory/referenceProcessor.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -96,12 +96,10 @@
                                        bool      mt_discovery,
                                        uint      mt_discovery_degree,
                                        bool      atomic_discovery,
-                                       BoolObjectClosure* is_alive_non_header,
-                                       bool      discovered_list_needs_post_barrier)  :
+                                       BoolObjectClosure* is_alive_non_header)  :
   _discovering_refs(false),
   _enqueuing_is_done(false),
   _is_alive_non_header(is_alive_non_header),
-  _discovered_list_needs_post_barrier(discovered_list_needs_post_barrier),
   _processing_is_mt(mt_processing),
   _next_id(0)
 {
@@ -340,10 +338,18 @@
   // (java.lang.ref.Reference.discovered), self-loop their "next" field
   // thus distinguishing them from active References, then
   // prepend them to the pending list.
+  //
+  // The Java threads will see the Reference objects linked together through
+  // the discovered field. Instead of trying to do the write barrier updates
+  // in all places in the reference processor where we manipulate the discovered
+  // field we make sure to do the barrier here where we anyway iterate through
+  // all linked Reference objects. Note that it is important to not dirty any
+  // cards during reference processing since this will cause card table
+  // verification to fail for G1.
+  //
   // BKWRD COMPATIBILITY NOTE: For older JDKs (prior to the fix for 4956777),
   // the "next" field is used to chain the pending list, not the discovered
   // field.
-
   if (TraceReferenceGC && PrintGCDetails) {
     gclog_or_tty->print_cr("ReferenceProcessor::enqueue_discovered_reflist list "
                            INTPTR_FORMAT, (address)refs_list.head());
@@ -365,15 +371,15 @@
       assert(java_lang_ref_Reference::next(obj) == NULL,
              "Reference not active; should not be discovered");
       // Self-loop next, so as to make Ref not active.
-      // Post-barrier not needed when looping to self.
       java_lang_ref_Reference::set_next_raw(obj, obj);
-      if (next_d == obj) {  // obj is last
+      if (next_d != obj) {
+        oopDesc::bs()->write_ref_field(java_lang_ref_Reference::discovered_addr(obj), next_d);
+      } else {
+        // This is the last object.
         // Swap refs_list into pending_list_addr and
         // set obj's discovered to what we read from pending_list_addr.
         oop old = oopDesc::atomic_exchange_oop(refs_list.head(), pending_list_addr);
-        // Need post-barrier on pending_list_addr above;
-        // see special post-barrier code at the end of
-        // enqueue_discovered_reflists() further below.
+        // Need post-barrier on pending_list_addr. See enqueue_discovered_ref_helper() above.
         java_lang_ref_Reference::set_discovered_raw(obj, old); // old may be NULL
         oopDesc::bs()->write_ref_field(java_lang_ref_Reference::discovered_addr(obj), old);
       }
@@ -496,20 +502,15 @@
   // pre-barrier here because we know the Reference has already been found/marked,
   // that's how it ended up in the discovered list in the first place.
   oop_store_raw(_prev_next, new_next);
-  if (_discovered_list_needs_post_barrier && _prev_next != _refs_list.adr_head()) {
-    // Needs post-barrier and this is not the list head (which is not on the heap)
-    oopDesc::bs()->write_ref_field(_prev_next, new_next);
-  }
   NOT_PRODUCT(_removed++);
   _refs_list.dec_length(1);
 }
 
 // Make the Reference object active again.
 void DiscoveredListIterator::make_active() {
-  // For G1 we don't want to use set_next - it
-  // will dirty the card for the next field of
-  // the reference object and will fail
-  // CT verification.
+  // The pre barrier for G1 is probably just needed for the old
+  // reference processing behavior. Should we guard this with
+  // ReferenceProcessor::pending_list_uses_discovered_field() ?
   if (UseG1GC) {
     HeapWord* next_addr = java_lang_ref_Reference::next_addr(_ref);
     if (UseCompressedOops) {
@@ -517,10 +518,8 @@
     } else {
       oopDesc::bs()->write_ref_field_pre((oop*)next_addr, NULL);
     }
-    java_lang_ref_Reference::set_next_raw(_ref, NULL);
-  } else {
-    java_lang_ref_Reference::set_next(_ref, NULL);
   }
+  java_lang_ref_Reference::set_next_raw(_ref, NULL);
 }
 
 void DiscoveredListIterator::clear_referent() {
@@ -546,7 +545,7 @@
                                    OopClosure*        keep_alive,
                                    VoidClosure*       complete_gc) {
   assert(policy != NULL, "Must have a non-NULL policy");
-  DiscoveredListIterator iter(refs_list, keep_alive, is_alive, _discovered_list_needs_post_barrier);
+  DiscoveredListIterator iter(refs_list, keep_alive, is_alive);
   // Decide which softly reachable refs should be kept alive.
   while (iter.has_next()) {
     iter.load_ptrs(DEBUG_ONLY(!discovery_is_atomic() /* allow_null_referent */));
@@ -586,7 +585,7 @@
                              BoolObjectClosure* is_alive,
                              OopClosure*        keep_alive) {
   assert(discovery_is_atomic(), "Error");
-  DiscoveredListIterator iter(refs_list, keep_alive, is_alive, _discovered_list_needs_post_barrier);
+  DiscoveredListIterator iter(refs_list, keep_alive, is_alive);
   while (iter.has_next()) {
     iter.load_ptrs(DEBUG_ONLY(false /* allow_null_referent */));
     DEBUG_ONLY(oop next = java_lang_ref_Reference::next(iter.obj());)
@@ -623,7 +622,7 @@
                                                   OopClosure*        keep_alive,
                                                   VoidClosure*       complete_gc) {
   assert(!discovery_is_atomic(), "Error");
-  DiscoveredListIterator iter(refs_list, keep_alive, is_alive, _discovered_list_needs_post_barrier);
+  DiscoveredListIterator iter(refs_list, keep_alive, is_alive);
   while (iter.has_next()) {
     iter.load_ptrs(DEBUG_ONLY(true /* allow_null_referent */));
     HeapWord* next_addr = java_lang_ref_Reference::next_addr(iter.obj());
@@ -666,7 +665,7 @@
                                    OopClosure*        keep_alive,
                                    VoidClosure*       complete_gc) {
   ResourceMark rm;
-  DiscoveredListIterator iter(refs_list, keep_alive, is_alive, _discovered_list_needs_post_barrier);
+  DiscoveredListIterator iter(refs_list, keep_alive, is_alive);
   while (iter.has_next()) {
     iter.update_discovered();
     iter.load_ptrs(DEBUG_ONLY(false /* allow_null_referent */));
@@ -782,13 +781,6 @@
   bool _clear_referent;
 };
 
-void ReferenceProcessor::set_discovered(oop ref, oop value) {
-  java_lang_ref_Reference::set_discovered_raw(ref, value);
-  if (_discovered_list_needs_post_barrier) {
-    oopDesc::bs()->write_ref_field(java_lang_ref_Reference::discovered_addr(ref), value);
-  }
-}
-
 // Balances reference queues.
 // Move entries from all queues[0, 1, ..., _max_num_q-1] to
 // queues[0, 1, ..., _num_q-1] because only the first _num_q
@@ -846,9 +838,9 @@
         // Add the chain to the to list.
         if (ref_lists[to_idx].head() == NULL) {
           // to list is empty. Make a loop at the end.
-          set_discovered(move_tail, move_tail);
+          java_lang_ref_Reference::set_discovered_raw(move_tail, move_tail);
         } else {
-          set_discovered(move_tail, ref_lists[to_idx].head());
+          java_lang_ref_Reference::set_discovered_raw(move_tail, ref_lists[to_idx].head());
         }
         ref_lists[to_idx].set_head(move_head);
         ref_lists[to_idx].inc_length(refs_to_move);
@@ -982,7 +974,7 @@
 
 void ReferenceProcessor::clean_up_discovered_reflist(DiscoveredList& refs_list) {
   assert(!discovery_is_atomic(), "Else why call this method?");
-  DiscoveredListIterator iter(refs_list, NULL, NULL, _discovered_list_needs_post_barrier);
+  DiscoveredListIterator iter(refs_list, NULL, NULL);
   while (iter.has_next()) {
     iter.load_ptrs(DEBUG_ONLY(true /* allow_null_referent */));
     oop next = java_lang_ref_Reference::next(iter.obj());
@@ -1071,16 +1063,6 @@
   // The last ref must have its discovered field pointing to itself.
   oop next_discovered = (current_head != NULL) ? current_head : obj;
 
-  // Note: In the case of G1, this specific pre-barrier is strictly
-  // not necessary because the only case we are interested in
-  // here is when *discovered_addr is NULL (see the CAS further below),
-  // so this will expand to nothing. As a result, we have manually
-  // elided this out for G1, but left in the test for some future
-  // collector that might have need for a pre-barrier here, e.g.:-
-  // oopDesc::bs()->write_ref_field_pre((oop* or narrowOop*)discovered_addr, next_discovered);
-  assert(!_discovered_list_needs_post_barrier || UseG1GC,
-         "Need to check non-G1 collector: "
-         "may need a pre-write-barrier for CAS from NULL below");
   oop retest = oopDesc::atomic_compare_exchange_oop(next_discovered, discovered_addr,
                                                     NULL);
   if (retest == NULL) {
@@ -1089,9 +1071,6 @@
     // is necessary.
     refs_list.set_head(obj);
     refs_list.inc_length(1);
-    if (_discovered_list_needs_post_barrier) {
-      oopDesc::bs()->write_ref_field((void*)discovered_addr, next_discovered);
-    }
 
     if (TraceReferenceGC) {
       gclog_or_tty->print_cr("Discovered reference (mt) (" INTPTR_FORMAT ": %s)",
@@ -1242,24 +1221,14 @@
   if (_discovery_is_mt) {
     add_to_discovered_list_mt(*list, obj, discovered_addr);
   } else {
-    // If "_discovered_list_needs_post_barrier", we do write barriers when
-    // updating the discovered reference list.  Otherwise, we do a raw store
-    // here: the field will be visited later when processing the discovered
-    // references.
+    // We do a raw store here: the field will be visited later when processing
+    // the discovered references.
     oop current_head = list->head();
     // The last ref must have its discovered field pointing to itself.
     oop next_discovered = (current_head != NULL) ? current_head : obj;
 
-    // As in the case further above, since we are over-writing a NULL
-    // pre-value, we can safely elide the pre-barrier here for the case of G1.
-    // e.g.:- oopDesc::bs()->write_ref_field_pre((oop* or narrowOop*)discovered_addr, next_discovered);
     assert(discovered == NULL, "control point invariant");
-    assert(!_discovered_list_needs_post_barrier || UseG1GC,
-           "For non-G1 collector, may need a pre-write-barrier for CAS from NULL below");
     oop_store_raw(discovered_addr, next_discovered);
-    if (_discovered_list_needs_post_barrier) {
-      oopDesc::bs()->write_ref_field((void*)discovered_addr, next_discovered);
-    }
     list->set_head(obj);
     list->inc_length(1);
 
@@ -1353,7 +1322,7 @@
                                                 OopClosure*        keep_alive,
                                                 VoidClosure*       complete_gc,
                                                 YieldClosure*      yield) {
-  DiscoveredListIterator iter(refs_list, keep_alive, is_alive, _discovered_list_needs_post_barrier);
+  DiscoveredListIterator iter(refs_list, keep_alive, is_alive);
   while (iter.has_next()) {
     iter.load_ptrs(DEBUG_ONLY(true /* allow_null_referent */));
     oop obj = iter.obj();
--- a/src/share/vm/memory/referenceProcessor.hpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/memory/referenceProcessor.hpp	Thu Jun 12 19:03:25 2014 -0700
@@ -99,7 +99,6 @@
   oop                _referent;
   OopClosure*        _keep_alive;
   BoolObjectClosure* _is_alive;
-  bool               _discovered_list_needs_post_barrier;
 
   DEBUG_ONLY(
   oop                _first_seen; // cyclic linked list check
@@ -113,8 +112,7 @@
 public:
   inline DiscoveredListIterator(DiscoveredList&    refs_list,
                                 OopClosure*        keep_alive,
-                                BoolObjectClosure* is_alive,
-                                bool               discovered_list_needs_post_barrier = false):
+                                BoolObjectClosure* is_alive):
     _refs_list(refs_list),
     _prev_next(refs_list.adr_head()),
     _prev(NULL),
@@ -128,8 +126,7 @@
 #endif
     _next(NULL),
     _keep_alive(keep_alive),
-    _is_alive(is_alive),
-    _discovered_list_needs_post_barrier(discovered_list_needs_post_barrier)
+    _is_alive(is_alive)
 { }
 
   // End Of List.
@@ -230,14 +227,6 @@
                                         // other collectors in configuration
   bool        _discovery_is_mt;         // true if reference discovery is MT.
 
-  // If true, setting "next" field of a discovered refs list requires
-  // write post barrier.  (Must be true if used in a collector in which
-  // elements of a discovered list may be moved during discovery: for
-  // example, a collector like Garbage-First that moves objects during a
-  // long-term concurrent marking phase that does weak reference
-  // discovery.)
-  bool        _discovered_list_needs_post_barrier;
-
   bool        _enqueuing_is_done;       // true if all weak references enqueued
   bool        _processing_is_mt;        // true during phases when
                                         // reference processing is MT.
@@ -382,11 +371,6 @@
   void enqueue_discovered_reflists(HeapWord* pending_list_addr, AbstractRefProcTaskExecutor* task_executor);
 
  protected:
-  // Set the 'discovered' field of the given reference to
-  // the given value - emitting post barriers depending upon
-  // the value of _discovered_list_needs_post_barrier.
-  void set_discovered(oop ref, oop value);
-
   // "Preclean" the given discovered reference list
   // by removing references with strongly reachable referents.
   // Currently used in support of CMS only.
@@ -427,8 +411,7 @@
                      bool mt_processing = false, uint mt_processing_degree = 1,
                      bool mt_discovery  = false, uint mt_discovery_degree  = 1,
                      bool atomic_discovery = true,
-                     BoolObjectClosure* is_alive_non_header = NULL,
-                     bool discovered_list_needs_post_barrier = false);
+                     BoolObjectClosure* is_alive_non_header = NULL);
 
   // RefDiscoveryPolicy values
   enum DiscoveryPolicy {
--- a/src/share/vm/oops/instanceKlass.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/oops/instanceKlass.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -1501,6 +1501,21 @@
   return NULL;
 }
 
+#ifdef ASSERT
+// search through class hierarchy and return true if this class or
+// one of the superclasses was redefined
+bool InstanceKlass::has_redefined_this_or_super() const {
+  const InstanceKlass* klass = this;
+  while (klass != NULL) {
+    if (klass->has_been_redefined()) {
+      return true;
+    }
+    klass = InstanceKlass::cast(klass->super());
+  }
+  return false;
+}
+#endif
+
 // lookup a method in the default methods list then in all transitive interfaces
 // Do NOT return private or static methods
 Method* InstanceKlass::lookup_method_in_ordered_interfaces(Symbol* name,
--- a/src/share/vm/oops/instanceKlass.hpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/oops/instanceKlass.hpp	Thu Jun 12 19:03:25 2014 -0700
@@ -754,6 +754,11 @@
   bool implements_interface(Klass* k) const;
   bool is_same_or_direct_interface(Klass* k) const;
 
+#ifdef ASSERT
+  // check whether this class or one of its superclasses was redefined
+  bool has_redefined_this_or_super() const;
+#endif
+
   // Access to the implementor of an interface.
   Klass* implementor() const
   {
@@ -811,8 +816,8 @@
 
   // Casting from Klass*
   static InstanceKlass* cast(Klass* k) {
-    assert(k->is_klass(), "must be");
-    assert(k->oop_is_instance(), "cast to InstanceKlass");
+    assert(k == NULL || k->is_klass(), "must be");
+    assert(k == NULL || k->oop_is_instance(), "cast to InstanceKlass");
     return (InstanceKlass*) k;
   }
 
--- a/src/share/vm/oops/oopsHierarchy.hpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/oops/oopsHierarchy.hpp	Thu Jun 12 19:03:25 2014 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2014, 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
@@ -112,9 +112,7 @@
 
   // Assignment
   oop& operator=(const oop& o)                            { _o = o.obj(); return *this; }
-#ifndef SOLARIS
   volatile oop& operator=(const oop& o) volatile          { _o = o.obj(); return *this; }
-#endif
   volatile oop& operator=(const volatile oop& o) volatile { _o = o.obj(); return *this; }
 
   // Explict user conversions
@@ -123,11 +121,10 @@
   operator void* () const volatile    { return (void *)obj(); }
 #endif
   operator HeapWord* () const         { return (HeapWord*)obj(); }
-  operator oopDesc* () const          { return obj(); }
+  operator oopDesc* () const volatile { return obj(); }
   operator intptr_t* () const         { return (intptr_t*)obj(); }
   operator PromotedObject* () const   { return (PromotedObject*)obj(); }
   operator markOop () const           { return markOop(obj()); }
-
   operator address   () const         { return (address)obj(); }
 
   // from javaCalls.cpp
@@ -161,11 +158,10 @@
             oop::operator=(o);                                             \
             return *this;                                                  \
        }                                                                   \
-       NOT_SOLARIS(                                                        \
        volatile type##Oop& operator=(const type##Oop& o) volatile {        \
             (void)const_cast<oop&>(oop::operator=(o));                     \
             return *this;                                                  \
-       })                                                                  \
+       }                                                                   \
        volatile type##Oop& operator=(const volatile type##Oop& o) volatile {\
             (void)const_cast<oop&>(oop::operator=(o));                     \
             return *this;                                                  \
--- a/src/share/vm/runtime/mutexLocker.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/runtime/mutexLocker.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -280,10 +280,10 @@
 
 #ifdef INCLUDE_TRACE
   def(JfrMsg_lock                  , Monitor, leaf,        true);
-  def(JfrBuffer_lock               , Mutex,   nonleaf+1,   true);
-  def(JfrThreadGroups_lock         , Mutex,   nonleaf+1,   true);
-  def(JfrStream_lock               , Mutex,   nonleaf+2,   true);
-  def(JfrStacktrace_lock           , Mutex,   special,     true );
+  def(JfrBuffer_lock               , Mutex,   leaf,        true);
+  def(JfrThreadGroups_lock         , Mutex,   leaf,        true);
+  def(JfrStream_lock               , Mutex,   nonleaf,     true);
+  def(JfrStacktrace_lock           , Mutex,   special,     true);
 #endif
 
 }
--- a/src/share/vm/runtime/objectMonitor.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/runtime/objectMonitor.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -385,6 +385,15 @@
       jt->java_suspend_self();
     }
     Self->set_current_pending_monitor(NULL);
+
+    // We cleared the pending monitor info since we've just gotten past
+    // the enter-check-for-suspend dance and we now own the monitor free
+    // and clear, i.e., it is no longer pending. The ThreadBlockInVM
+    // destructor can go to a safepoint at the end of this block. If we
+    // do a thread dump during that safepoint, then this thread will show
+    // as having "-locked" the monitor, but the OS and java.lang.Thread
+    // states will still report that the thread is blocked trying to
+    // acquire it.
   }
 
   Atomic::dec_ptr(&_count);
--- a/src/share/vm/runtime/thread.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/runtime/thread.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -1434,7 +1434,7 @@
   _in_deopt_handler = 0;
   _doing_unsafe_access = false;
   _stack_guard_state = stack_guard_unused;
-  (void)const_cast<oop&>(_exception_oop = NULL);
+  (void)const_cast<oop&>(_exception_oop = oop(NULL));
   _exception_pc  = 0;
   _exception_handler_pc = 0;
   _is_method_handle_return = 0;
@@ -3543,6 +3543,8 @@
   // debug stuff, that does not work until all basic classes have been initialized.
   set_init_completed();
 
+  Metaspace::post_initialize();
+
   HOTSPOT_VM_INIT_END();
 
   // record VM initialization completion time
--- a/src/share/vm/runtime/vframe.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/runtime/vframe.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -199,6 +199,7 @@
         continue;
       }
       if (monitor->owner() != NULL) {
+        // the monitor is associated with an object, i.e., it is locked
 
         // First, assume we have the monitor locked. If we haven't found an
         // owned monitor before and this is the first frame, then we need to
@@ -209,7 +210,11 @@
         if (!found_first_monitor && frame_count == 0) {
           markOop mark = monitor->owner()->mark();
           if (mark->has_monitor() &&
-              mark->monitor() == thread()->current_pending_monitor()) {
+              ( // we have marked ourself as pending on this monitor
+                mark->monitor() == thread()->current_pending_monitor() ||
+                // we are not the owner of this monitor
+                !mark->monitor()->is_entered(thread())
+              )) {
             lock_state = "waiting to lock";
           }
         }
--- a/src/share/vm/services/attachListener.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/services/attachListener.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -162,10 +162,7 @@
     java_lang_Throwable::print(PENDING_EXCEPTION, out);
     out->cr();
     CLEAR_PENDING_EXCEPTION;
-    // The exception has been printed on the output stream
-    // If the JVM returns JNI_ERR, the attachAPI throws a generic I/O
-    // exception and the content of the output stream is not processed.
-    // By returning JNI_OK, the exception will be displayed on the client side
+    return JNI_ERR;
   }
   return JNI_OK;
 }
--- a/src/share/vm/services/memoryManager.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/services/memoryManager.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2014, 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
@@ -39,7 +39,7 @@
 
 MemoryManager::MemoryManager() {
   _num_pools = 0;
-  (void)const_cast<instanceOop&>(_memory_mgr_obj = NULL);
+  (void)const_cast<instanceOop&>(_memory_mgr_obj = instanceOop(NULL));
 }
 
 void MemoryManager::add_pool(MemoryPool* pool) {
--- a/src/share/vm/services/memoryPool.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/services/memoryPool.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2014, 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
@@ -46,7 +46,7 @@
   _name = name;
   _initial_size = init_size;
   _max_size = max_size;
-  (void)const_cast<instanceOop&>(_memory_pool_obj = NULL);
+  (void)const_cast<instanceOop&>(_memory_pool_obj = instanceOop(NULL));
   _available_for_allocation = true;
   _num_managers = 0;
   _type = type;
--- a/src/share/vm/utilities/debug.cpp	Thu Jun 12 18:42:33 2014 +0000
+++ b/src/share/vm/utilities/debug.cpp	Thu Jun 12 19:03:25 2014 -0700
@@ -263,13 +263,11 @@
 
 void report_out_of_shared_space(SharedSpaceType shared_space) {
   static const char* name[] = {
-    "native memory for metadata",
     "shared read only space",
     "shared read write space",
     "shared miscellaneous data space"
   };
   static const char* flag[] = {
-    "Metaspace",
     "SharedReadOnlySize",
     "SharedReadWriteSize",
     "SharedMiscDataSize"
--- a/test/TEST.groups	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/TEST.groups	Thu Jun 12 19:03:25 2014 -0700
@@ -81,6 +81,7 @@
   runtime/NMT/ThreadedVirtualAllocTestType.java \
   runtime/NMT/VirtualAllocTestType.java \
   runtime/RedefineObject/TestRedefineObject.java \
+  runtime/Thread/TestThreadDumpMonitorContention.java \
   runtime/XCheckJniJsig/XCheckJSig.java \
   serviceability/attach/AttachWithStalePidFile.java \
   serviceability/jvmti/8036666/GetObjectLockCount.java \
--- a/test/gc/arguments/TestParallelHeapSizeFlags.java	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/gc/arguments/TestParallelHeapSizeFlags.java	Thu Jun 12 19:03:25 2014 -0700
@@ -22,6 +22,7 @@
 */
 
 /*
+ * @ignore 8027915
  * @test TestParallelHeapSizeFlags
  * @key gc
  * @bug 8006088
--- a/test/gc/arguments/TestUseCompressedOopsErgo.java	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/gc/arguments/TestUseCompressedOopsErgo.java	Thu Jun 12 19:03:25 2014 -0700
@@ -22,6 +22,7 @@
 */
 
 /*
+ * @ignore 8025645
  * @test TestUseCompressedOopsErgo
  * @key gc
  * @bug 8010722
--- a/test/gc/g1/TestHumongousShrinkHeap.java	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/gc/g1/TestHumongousShrinkHeap.java	Thu Jun 12 19:03:25 2014 -0700
@@ -22,6 +22,7 @@
  */
 
 /**
+ * @ignore 8041506, 8041946, 8042051
  * @test TestHumongousShrinkHeap
  * @bug 8036025
  * @summary Verify that heap shrinks after GC in the presence of fragmentation due to humongous objects
--- a/test/gc/g1/TestStringDeduplicationMemoryUsage.java	Thu Jun 12 18:42:33 2014 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,36 +0,0 @@
-/*
- * Copyright (c) 2014, 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 TestStringDeduplicationMemoryUsage
- * @summary Test string deduplication memory usage
- * @bug 8029075
- * @key gc
- * @library /testlibrary
- */
-
-public class TestStringDeduplicationMemoryUsage {
-    public static void main(String[] args) throws Exception {
-        TestStringDeduplicationTools.testMemoryUsage();
-    }
-}
--- a/test/gc/g1/TestStringDeduplicationTools.java	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/gc/g1/TestStringDeduplicationTools.java	Thu Jun 12 19:03:25 2014 -0700
@@ -294,55 +294,6 @@
         }
     }
 
-    private static class MemoryUsageTest {
-        public static void main(String[] args) {
-            System.out.println("Begin: MemoryUsageTest");
-
-            final boolean useStringDeduplication = Boolean.parseBoolean(args[0]);
-            final int numberOfStrings = LargeNumberOfStrings;
-            final int numberOfUniqueStrings = 1;
-
-            ArrayList<String> list = createStrings(numberOfStrings, numberOfUniqueStrings);
-            forceDeduplication(DefaultAgeThreshold, FullGC);
-
-            if (useStringDeduplication) {
-                verifyStrings(list, numberOfUniqueStrings);
-            }
-
-            System.gc();
-
-            System.out.println("Heap Memory Usage: " + ManagementFactory.getMemoryMXBean().getHeapMemoryUsage().getUsed());
-            System.out.println("Array Header Size: " + unsafe.ARRAY_CHAR_BASE_OFFSET);
-
-            System.out.println("End: MemoryUsageTest");
-        }
-
-        public static OutputAnalyzer run(boolean useStringDeduplication) throws Exception {
-            String[] extraArgs = new String[0];
-
-            if (useStringDeduplication) {
-                extraArgs = new String[] {
-                    "-XX:+UseStringDeduplication",
-                    "-XX:+PrintStringDeduplicationStatistics",
-                    "-XX:StringDeduplicationAgeThreshold=" + DefaultAgeThreshold
-                };
-            }
-
-            String[] defaultArgs = new String[] {
-                "-XX:+PrintGC",
-                "-XX:+PrintGCDetails",
-                MemoryUsageTest.class.getName(),
-                "" + useStringDeduplication
-            };
-
-            ArrayList<String> args = new ArrayList<String>();
-            args.addAll(Arrays.asList(extraArgs));
-            args.addAll(Arrays.asList(defaultArgs));
-
-            return runTest(args.toArray(new String[args.size()]));
-        }
-    }
-
     /*
      * Tests
      */
@@ -480,44 +431,4 @@
         OutputAnalyzer output = InternedTest.run();
         output.shouldHaveExitValue(0);
     }
-
-    public static void testMemoryUsage() throws Exception {
-        // Test that memory usage is reduced after deduplication
-        OutputAnalyzer output;
-        final String heapMemoryUsagePattern = "Heap Memory Usage: (\\d+)";
-        final String arrayHeaderSizePattern = "Array Header Size: (\\d+)";
-
-        // Run without deduplication
-        output = MemoryUsageTest.run(false);
-        output.shouldHaveExitValue(0);
-        final long heapMemoryUsageWithoutDedup = Long.parseLong(output.firstMatch(heapMemoryUsagePattern, 1));
-        final long arrayHeaderSizeWithoutDedup = Long.parseLong(output.firstMatch(arrayHeaderSizePattern, 1));
-
-        // Run with deduplication
-        output = MemoryUsageTest.run(true);
-        output.shouldHaveExitValue(0);
-        final long heapMemoryUsageWithDedup = Long.parseLong(output.firstMatch(heapMemoryUsagePattern, 1));
-        final long arrayHeaderSizeWithDedup = Long.parseLong(output.firstMatch(arrayHeaderSizePattern, 1));
-
-        // Sanity check to make sure one instance isn't using compressed class pointers and the other not
-        if (arrayHeaderSizeWithoutDedup != arrayHeaderSizeWithDedup) {
-            throw new Exception("Unexpected difference between array header sizes");
-        }
-
-        // Calculate expected memory usage with deduplication enabled. This calculation does
-        // not take alignment and padding into account, so it's a conservative estimate.
-        final long sizeOfChar = unsafe.ARRAY_CHAR_INDEX_SCALE;
-        final long sizeOfCharArray = StringLength * sizeOfChar + arrayHeaderSizeWithoutDedup;
-        final long bytesSaved = (LargeNumberOfStrings - 1) * sizeOfCharArray;
-        final long heapMemoryUsageWithDedupExpected = heapMemoryUsageWithoutDedup - bytesSaved;
-
-        System.out.println("Memory usage summary:");
-        System.out.println("   heapMemoryUsageWithoutDedup:      " + heapMemoryUsageWithoutDedup);
-        System.out.println("   heapMemoryUsageWithDedup:         " + heapMemoryUsageWithDedup);
-        System.out.println("   heapMemoryUsageWithDedupExpected: " + heapMemoryUsageWithDedupExpected);
-
-        if (heapMemoryUsageWithDedup > heapMemoryUsageWithDedupExpected) {
-            throw new Exception("Unexpected memory usage, heapMemoryUsageWithDedup should be less or equal to heapMemoryUsageWithDedupExpected");
-        }
-    }
 }
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/gc/metaspace/TestMetaspaceInitialization.java	Thu Jun 12 19:03:25 2014 -0700
@@ -0,0 +1,48 @@
+/*
+ * 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.
+ */
+
+import java.util.ArrayList;
+
+/* @test TestMetaspaceInitialization
+ * @bug 8042933
+ * @summary Tests to initialize metaspace with a very low MetaspaceSize
+ * @library /testlibrary
+ * @run main/othervm -XX:MetaspaceSize=2m TestMetaspaceInitialization
+ */
+public class TestMetaspaceInitialization {
+    private class Internal {
+        public int x;
+        public Internal(int x) {
+            this.x = x;
+        }
+    }
+
+    private void test() {
+        ArrayList<Internal> l = new ArrayList<>();
+        l.add(new Internal(17));
+    }
+
+    public static void main(String[] args) {
+        new TestMetaspaceInitialization().test();
+    }
+}
--- a/test/gc/parallelScavenge/TestDynShrinkHeap.java	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/gc/parallelScavenge/TestDynShrinkHeap.java	Thu Jun 12 19:03:25 2014 -0700
@@ -22,6 +22,7 @@
  */
 
 /**
+ * @ignore 8042051
  * @test TestDynShrinkHeap
  * @bug 8016479
  * @summary Verify that the heap shrinks after full GC according to the current values of the Min/MaxHeapFreeRatio flags
--- a/test/runtime/CommandLine/TestHexArguments.java	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/runtime/CommandLine/TestHexArguments.java	Thu Jun 12 19:03:25 2014 -0700
@@ -35,14 +35,14 @@
 public class TestHexArguments {
     public static void main(String args[]) throws Exception {
       String[] javaArgs = {"-XX:SharedBaseAddress=0x1D000000", "-version"};
-      ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true, javaArgs);
+      ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(javaArgs);
 
       OutputAnalyzer output = new OutputAnalyzer(pb.start());
       output.shouldNotContain("Could not create the Java Virtual Machine");
       output.shouldHaveExitValue(0);
 
       String[] javaArgs1 = {"-XX:SharedBaseAddress=1D000000", "-version"};
-      pb = ProcessTools.createJavaProcessBuilder(true, javaArgs1);
+      pb = ProcessTools.createJavaProcessBuilder(javaArgs1);
       output = new OutputAnalyzer(pb.start());
       output.shouldContain("Could not create the Java Virtual Machine");
   }
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/RedefineFinalizer/RedefineFinalizer.java	Thu Jun 12 19:03:25 2014 -0700
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2014, 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 6904403
+ * @summary Don't assert if we redefine finalize method
+ * @library /testlibrary
+ * @build RedefineClassHelper
+ * @run main RedefineClassHelper
+ * @run main/othervm -javaagent:redefineagent.jar RedefineFinalizer
+ */
+
+/*
+ * Regression test for hitting:
+ *
+ * assert(f == k->has_finalizer()) failed: inconsistent has_finalizer
+ *
+ * when redefining finalizer method
+ */
+public class RedefineFinalizer {
+
+    public static String newB =
+                "class RedefineFinalizer$B {" +
+                "   protected void finalize() { " +
+                "       System.out.println(\"Finalizer called\");" +
+                "   }" +
+                "}";
+
+    public static void main(String[] args) throws Exception {
+        RedefineClassHelper.redefineClass(B.class, newB);
+
+        A a = new A();
+    }
+
+    static class A extends B {
+    }
+
+    static class B {
+        protected void finalize() {
+            // should be empty
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/SharedArchiveFile/LimitSharedSizes.java	Thu Jun 12 19:03:25 2014 -0700
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2014, 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.
+ */
+
+/* @ignore JDK-8043896
+ * @test LimitSharedSizes
+ * @summary Test handling of limits on shared space size
+ * @library /testlibrary
+ * @run main LimitSharedSizes
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class LimitSharedSizes {
+    private static class SharedSizeTestData {
+        public String optionName;
+        public String optionValue;
+        public String expectedErrorMsg;
+
+        public SharedSizeTestData(String name, String value, String msg) {
+            optionName = name;
+            optionValue = value;
+            expectedErrorMsg = msg;
+        }
+    }
+
+    private static final SharedSizeTestData[] testTable = {
+        // values in this part of the test table should cause failure
+        // (shared space sizes are deliberately too small)
+        new SharedSizeTestData("-XX:SharedReadOnlySize", "4M",      "read only"),
+        new SharedSizeTestData("-XX:SharedReadWriteSize","4M",      "read write"),
+
+        // Known issue, JDK-8038422 (assert() on Windows)
+        // new SharedSizeTestData("-XX:SharedMiscDataSize", "500k",    "miscellaneous data"),
+
+        // This will cause a VM crash; commenting out for now; see bug JDK-8038268
+        // @ignore JDK-8038268
+        // new SharedSizeTestData("-XX:SharedMiscCodeSize", "20k",     "miscellaneous code"),
+
+        // these values are larger than default ones, but should
+        // be acceptable and not cause failure
+        new SharedSizeTestData("-XX:SharedReadOnlySize",    "20M", null),
+        new SharedSizeTestData("-XX:SharedReadWriteSize",   "20M", null),
+        new SharedSizeTestData("-XX:SharedMiscDataSize",    "20M", null),
+        new SharedSizeTestData("-XX:SharedMiscCodeSize",    "20M", null)
+    };
+
+    public static void main(String[] args) throws Exception {
+        String fileName = "test.jsa";
+
+        for (SharedSizeTestData td : testTable) {
+            String option = td.optionName + "=" + td.optionValue;
+            System.out.println("testing option <" + option + ">");
+
+            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+               "-XX:+UnlockDiagnosticVMOptions",
+               "-XX:SharedArchiveFile=./" + fileName,
+               option,
+               "-Xshare:dump");
+
+            OutputAnalyzer output = new OutputAnalyzer(pb.start());
+
+            if (td.expectedErrorMsg != null) {
+                output.shouldContain("The shared " + td.expectedErrorMsg
+                    + " space is not large enough");
+
+                output.shouldHaveExitValue(2);
+            } else {
+                output.shouldNotContain("space is not large enough");
+                output.shouldHaveExitValue(0);
+            }
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/SharedArchiveFile/SharedBaseAddress.java	Thu Jun 12 19:03:25 2014 -0700
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2014, 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 SharedBaseAddress
+ * @summary Test variety of values for SharedBaseAddress, making sure
+ *          VM handles normal values as well as edge values w/o a crash.
+ * @library /testlibrary
+ * @run main SharedBaseAddress
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class SharedBaseAddress {
+
+    // shared base address test table
+    private static final String[] testTable = {
+        "1g", "8g", "64g","512g", "4t",
+        "32t", "128t", "0",
+        "1", "64k", "64M"
+    };
+
+    public static void main(String[] args) throws Exception {
+        // Known issue on Solaris-Sparc
+        // @ignore JDK-8044600
+        if (Platform.isSolaris() && Platform.isSparc())
+            return;
+
+        for (String testEntry : testTable) {
+            System.out.println("sharedBaseAddress = " + testEntry);
+
+            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+               "-XX:+UnlockDiagnosticVMOptions",
+               "-XX:SharedArchiveFile=test.jsa",
+               "-XX:SharedBaseAddress=" + testEntry,
+               "-Xshare:dump");
+
+            OutputAnalyzer output = new OutputAnalyzer(pb.start());
+
+            output.shouldContain("Loading classes to share");
+
+            try {
+                pb = ProcessTools.createJavaProcessBuilder(
+                    "-XX:+UnlockDiagnosticVMOptions",
+                    "-XX:SharedArchiveFile=test.jsa",
+                    "-Xshare:on",
+                    "-version");
+                output = new OutputAnalyzer(pb.start());
+                output.shouldContain("sharing");
+                output.shouldHaveExitValue(0);
+            } catch (RuntimeException e) {
+                output.shouldContain("Unable to use shared archive");
+                output.shouldHaveExitValue(1);
+            }
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/SharedArchiveFile/SpaceUtilizationCheck.java	Thu Jun 12 19:03:25 2014 -0700
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2014, 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 SpaceUtilizationCheck
+ * @summary Check if the space utilization for shared spaces is adequate
+ * @library /testlibrary
+ * @run main SpaceUtilizationCheck
+ */
+
+import com.oracle.java.testlibrary.*;
+
+import java.util.regex.Pattern;
+import java.util.regex.Matcher;
+import java.util.ArrayList;
+import java.lang.Integer;
+
+public class SpaceUtilizationCheck {
+    // Minimum allowed utilization value (percent)
+    // The goal is to have this number to be 50% for RO and RW regions
+    // Once that feature is implemented, increase the MIN_UTILIZATION to 50
+    private static final int MIN_UTILIZATION = 30;
+
+    // Only RO and RW regions are considered for this check, since they
+    // currently account for the bulk of the shared space
+    private static final int NUMBER_OF_CHECKED_SHARED_REGIONS = 2;
+
+    public static void main(String[] args) throws Exception {
+        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+           "-XX:+UnlockDiagnosticVMOptions",
+           "-XX:SharedArchiveFile=./test.jsa",
+           "-Xshare:dump");
+
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        String stdout = output.getStdout();
+        ArrayList<String> utilization = findUtilization(stdout);
+
+        if (utilization.size() != NUMBER_OF_CHECKED_SHARED_REGIONS )
+            throw new RuntimeException("The output format of sharing summary has changed");
+
+        for(String str : utilization) {
+            int value = Integer.parseInt(str);
+            if (value < MIN_UTILIZATION) {
+                System.out.println(stdout);
+                throw new RuntimeException("Utilization for one of the regions" +
+                    "is below a threshold of " + MIN_UTILIZATION + "%");
+            }
+        }
+    }
+
+    public static ArrayList<String> findUtilization(String input) {
+        ArrayList<String> regions = filterRegionsOfInterest(input.split("\n"));
+        return filterByPattern(filterByPattern(regions, "bytes \\[.*% used\\]"), "\\d+");
+    }
+
+    private static ArrayList<String> filterByPattern(Iterable<String> input, String pattern) {
+        ArrayList<String> result = new ArrayList<String>();
+        for (String str : input) {
+            Matcher matcher = Pattern.compile(pattern).matcher(str);
+            if (matcher.find()) {
+                result.add(matcher.group());
+            }
+        }
+        return result;
+    }
+
+    private static ArrayList<String> filterRegionsOfInterest(String[] inputLines) {
+        ArrayList<String> result = new ArrayList<String>();
+        for (String str : inputLines) {
+            if (str.contains("ro space:") || str.contains("rw space:")) {
+                result.add(str);
+            }
+        }
+        return result;
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/Thread/TestThreadDumpMonitorContention.java	Thu Jun 12 19:03:25 2014 -0700
@@ -0,0 +1,405 @@
+/*
+ * Copyright (c) 2014, 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     8036823
+ * @summary Creates two threads contending for the same lock and checks
+ *      whether jstack reports "locked" by more than one thread.
+ *
+ * @library /testlibrary
+ * @run main/othervm TestThreadDumpMonitorContention
+ */
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.lang.management.ManagementFactory;
+import java.lang.management.RuntimeMXBean;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import com.oracle.java.testlibrary.*;
+
+public class TestThreadDumpMonitorContention {
+    // jstack tends to be closely bound to the VM that we are running
+    // so use getTestJDKTool() instead of getCompileJDKTool() or even
+    // getJDKTool() which can fall back to "compile.jdk".
+    final static String JSTACK = JDKToolFinder.getTestJDKTool("jstack");
+    final static String PID = getPid();
+
+    // looking for header lines with these patterns:
+    // "ContendingThread-1" #19 prio=5 os_prio=64 tid=0x000000000079c000 nid=0x23 runnable [0xffff80ffb8b87000]
+    // "ContendingThread-2" #21 prio=5 os_prio=64 tid=0x0000000000780000 nid=0x2f waiting for monitor entry [0xfffffd7fc1111000]
+    final static Pattern HEADER_PREFIX_PATTERN = Pattern.compile(
+        "^\"ContendingThread-.*");
+    final static Pattern HEADER_WAITING_PATTERN = Pattern.compile(
+        "^\"ContendingThread-.* waiting for monitor entry .*");
+    final static Pattern HEADER_RUNNABLE_PATTERN = Pattern.compile(
+        "^\"ContendingThread-.* runnable .*");
+
+    // looking for thread state lines with these patterns:
+    // java.lang.Thread.State: RUNNABLE
+    // java.lang.Thread.State: BLOCKED (on object monitor)
+    final static Pattern THREAD_STATE_PREFIX_PATTERN = Pattern.compile(
+        " *java\\.lang\\.Thread\\.State: .*");
+    final static Pattern THREAD_STATE_BLOCKED_PATTERN = Pattern.compile(
+        " *java\\.lang\\.Thread\\.State: BLOCKED \\(on object monitor\\)");
+    final static Pattern THREAD_STATE_RUNNABLE_PATTERN = Pattern.compile(
+        " *java\\.lang\\.Thread\\.State: RUNNABLE");
+
+    // looking for duplicates of this pattern:
+    // - locked <0x000000076ac59e20> (a TestThreadDumpMonitorContention$1)
+    final static Pattern LOCK_PATTERN = Pattern.compile(
+        ".* locked \\<.*\\(a TestThreadDumpMonitorContention.*");
+
+    // sanity checking header and thread state lines associated
+    // with this pattern:
+    // - waiting to lock <0x000000076ac59e20> (a TestThreadDumpMonitorContention$1)
+    final static Pattern WAITING_PATTERN = Pattern.compile(
+        ".* waiting to lock \\<.*\\(a TestThreadDumpMonitorContention.*");
+
+    volatile static boolean done = false;
+
+    static int error_cnt = 0;
+    static String header_line = null;
+    static boolean have_header_line = false;
+    static boolean have_thread_state_line = false;
+    static int match_cnt = 0;
+    static String[] match_list = new String[2];
+    static int n_samples = 15;
+    static String thread_state_line = null;
+    static boolean verbose = false;
+
+    public static void main(String[] args) throws Exception {
+        if (args.length != 0) {
+            int arg_i = 0;
+            if (args[arg_i].equals("-v")) {
+                verbose = true;
+                arg_i++;
+            }
+
+            try {
+                n_samples = Integer.parseInt(args[arg_i]);
+            } catch (NumberFormatException nfe) {
+                System.err.println(nfe);
+                usage();
+            }
+        }
+
+        Runnable runnable = new Runnable() {
+            public void run() {
+                while (!done) {
+                    synchronized (this) { }
+                }
+            }
+        };
+        Thread[] thread_list = new Thread[2];
+        thread_list[0] = new Thread(runnable, "ContendingThread-1");
+        thread_list[1] = new Thread(runnable, "ContendingThread-2");
+        thread_list[0].start();
+        thread_list[1].start();
+
+        doSamples();
+
+        done = true;
+
+        thread_list[0].join();
+        thread_list[1].join();
+
+        if (error_cnt == 0) {
+            System.out.println("Test PASSED.");
+        } else {
+            System.out.println("Test FAILED.");
+            throw new AssertionError("error_cnt=" + error_cnt);
+        }
+    }
+
+    // Reached a blank line which is the end of the
+    // stack trace without matching either LOCK_PATTERN
+    // or WAITING_PATTERN. Rare, but it's not an error.
+    //
+    // Example:
+    // "ContendingThread-1" #21 prio=5 os_prio=64 tid=0x00000000007b9000 nid=0x2f runnable [0xfffffd7fc1111000]
+    //    java.lang.Thread.State: RUNNABLE
+    //         at TestThreadDumpMonitorContention$1.run(TestThreadDumpMonitorContention.java:67)
+    //         at java.lang.Thread.run(Thread.java:745)
+    //
+    static boolean checkBlankLine(String line) {
+        if (line.length() == 0) {
+            have_header_line = false;
+            have_thread_state_line = false;
+            return true;
+        }
+
+        return false;
+    }
+
+    // Process the locked line here if we found one.
+    //
+    // Example 1:
+    // "ContendingThread-1" #21 prio=5 os_prio=64 tid=0x00000000007b9000 nid=0x2f runnable [0xfffffd7fc1111000]
+    //    java.lang.Thread.State: RUNNABLE
+    //         at TestThreadDumpMonitorContention$1.run(TestThreadDumpMonitorContention.java:67)
+    //         - locked <0xfffffd7e6a2912f8> (a TestThreadDumpMonitorContention$1)
+    //         at java.lang.Thread.run(Thread.java:745)
+    //
+    // Example 2:
+    // "ContendingThread-1" #21 prio=5 os_prio=64 tid=0x00000000007b9000 nid=0x2f waiting for monitor entry [0xfffffd7fc1111000]
+    //    java.lang.Thread.State: BLOCKED (on object monitor)
+    //         at TestThreadDumpMonitorContention$1.run(TestThreadDumpMonitorContention.java:67)
+    //         - locked <0xfffffd7e6a2912f8> (a TestThreadDumpMonitorContention$1)
+    //         at java.lang.Thread.run(Thread.java:745)
+    //
+    static boolean checkLockedLine(String line) {
+        Matcher matcher = LOCK_PATTERN.matcher(line);
+        if (matcher.matches()) {
+            if (verbose) {
+                System.out.println("locked_line='" + line + "'");
+            }
+            match_list[match_cnt] = new String(line);
+            match_cnt++;
+
+            matcher = HEADER_RUNNABLE_PATTERN.matcher(header_line);
+            if (!matcher.matches()) {
+                // It's strange, but a locked line can also
+                // match the HEADER_WAITING_PATTERN.
+                matcher = HEADER_WAITING_PATTERN.matcher(header_line);
+                if (!matcher.matches()) {
+                    System.err.println();
+                    System.err.println("ERROR: header line does " +
+                        "not match runnable or waiting patterns.");
+                    System.err.println("ERROR: header_line='" +
+                        header_line + "'");
+                    System.err.println("ERROR: locked_line='" + line + "'");
+                    error_cnt++;
+                }
+            }
+
+            matcher = THREAD_STATE_RUNNABLE_PATTERN.matcher(thread_state_line);
+            if (!matcher.matches()) {
+                // It's strange, but a locked line can also
+                // match the THREAD_STATE_BLOCKED_PATTERN.
+                matcher = THREAD_STATE_BLOCKED_PATTERN.matcher(
+                              thread_state_line);
+                if (!matcher.matches()) {
+                    System.err.println();
+                    System.err.println("ERROR: thread state line does not " +
+                        "match runnable or waiting patterns.");
+                    System.err.println("ERROR: " + "thread_state_line='" +
+                        thread_state_line + "'");
+                    System.err.println("ERROR: locked_line='" + line + "'");
+                    error_cnt++;
+                }
+            }
+
+            // Have everything we need from this thread stack
+            // that matches the LOCK_PATTERN.
+            have_header_line = false;
+            have_thread_state_line = false;
+            return true;
+        }
+
+        return false;
+    }
+
+    // Process the waiting line here if we found one.
+    //
+    // Example:
+    // "ContendingThread-2" #22 prio=5 os_prio=64 tid=0x00000000007b9800 nid=0x30 waiting for monitor entry [0xfffffd7fc1010000]
+    //    java.lang.Thread.State: BLOCKED (on object monitor)
+    //         at TestThreadDumpMonitorContention$1.run(TestThreadDumpMonitorContention.java:67)
+    //         - waiting to lock <0xfffffd7e6a2912f8> (a TestThreadDumpMonitorContention$1)
+    //         at java.lang.Thread.run(Thread.java:745)
+    //
+    static boolean checkWaitingLine(String line) {
+        Matcher matcher = WAITING_PATTERN.matcher(line);
+        if (matcher.matches()) {
+            if (verbose) {
+                System.out.println("waiting_line='" + line + "'");
+            }
+
+            matcher = HEADER_WAITING_PATTERN.matcher(header_line);
+            if (!matcher.matches()) {
+                System.err.println();
+                System.err.println("ERROR: header line does " +
+                    "not match a waiting pattern.");
+                System.err.println("ERROR: header_line='" + header_line + "'");
+                System.err.println("ERROR: waiting_line='" + line + "'");
+                error_cnt++;
+            }
+
+            matcher = THREAD_STATE_BLOCKED_PATTERN.matcher(thread_state_line);
+            if (!matcher.matches()) {
+                System.err.println();
+                System.err.println("ERROR: thread state line " +
+                    "does not match a waiting pattern.");
+                System.err.println("ERROR: thread_state_line='" +
+                    thread_state_line + "'");
+                System.err.println("ERROR: waiting_line='" + line + "'");
+                error_cnt++;
+            }
+
+            // Have everything we need from this thread stack
+            // that matches the WAITING_PATTERN.
+            have_header_line = false;
+            have_thread_state_line = false;
+            return true;
+        }
+
+        return false;
+    }
+
+    static void doSamples() throws Exception {
+        for (int count = 0; count < n_samples; count++) {
+            match_cnt = 0;
+            // verbose mode or an error has a lot of output so add more space
+            if (verbose || error_cnt > 0) System.out.println();
+            System.out.println("Sample #" + count);
+
+            // We don't use the ProcessTools, OutputBuffer or
+            // OutputAnalyzer classes from the testlibrary because
+            // we have a complicated multi-line parse to perform
+            // on a narrow subset of the JSTACK output.
+            //
+            // - we only care about stack traces that match
+            //   HEADER_PREFIX_PATTERN; only two should match
+            // - we care about at most three lines from each stack trace
+            // - if both stack traces match LOCKED_PATTERN, then that's
+            //   a failure and we report it
+            // - for a stack trace that matches LOCKED_PATTERN, we verify:
+            //   - the header line matches HEADER_RUNNABLE_PATTERN
+            //     or HEADER_WAITING_PATTERN
+            //   - the thread state line matches THREAD_STATE_BLOCKED_PATTERN
+            //     or THREAD_STATE_RUNNABLE_PATTERN
+            //   - we report any mismatches as failures
+            // - for a stack trace that matches WAITING_PATTERN, we verify:
+            //   - the header line matches HEADER_WAITING_PATTERN
+            //   - the thread state line matches THREAD_STATE_BLOCKED_PATTERN
+            //   - we report any mismatches as failures
+            // - the stack traces that match HEADER_PREFIX_PATTERN may
+            //   not match either LOCKED_PATTERN or WAITING_PATTERN
+            //   because we might observe the thread outside of
+            //   monitor operations; this is not considered a failure
+            //
+            // When we do observe LOCKED_PATTERN or WAITING_PATTERN,
+            // then we are checking the header and thread state patterns
+            // that occurred earlier in the current stack trace that
+            // matched HEADER_PREFIX_PATTERN. We don't use data from
+            // stack traces that don't match HEADER_PREFIX_PATTERN and
+            // we don't mix data between the two stack traces that do
+            // match HEADER_PREFIX_PATTERN.
+            //
+            Process process = new ProcessBuilder(JSTACK, PID)
+                .redirectErrorStream(true).start();
+
+            BufferedReader reader = new BufferedReader(new InputStreamReader(
+                                        process.getInputStream()));
+            String line;
+            while ((line = reader.readLine()) != null) {
+                Matcher matcher = null;
+
+                // process the header line here
+                if (!have_header_line) {
+                    matcher = HEADER_PREFIX_PATTERN.matcher(line);
+                    if (matcher.matches()) {
+                        if (verbose) {
+                            System.out.println();
+                            System.out.println("header='" + line + "'");
+                        }
+                        header_line = new String(line);
+                        have_header_line = true;
+                        continue;
+                    }
+                    continue;  // skip until have a header line
+                }
+
+                // process the thread state line here
+                if (!have_thread_state_line) {
+                    matcher = THREAD_STATE_PREFIX_PATTERN.matcher(line);
+                    if (matcher.matches()) {
+                        if (verbose) {
+                            System.out.println("thread_state='" + line + "'");
+                        }
+                        thread_state_line = new String(line);
+                        have_thread_state_line = true;
+                        continue;
+                    }
+                    continue;  // skip until we have a thread state line
+                }
+
+                // process the locked line here if we find one
+                if (checkLockedLine(line)) {
+                    continue;
+                }
+
+                // process the waiting line here if we find one
+                if (checkWaitingLine(line)) {
+                    continue;
+                }
+
+                // process the blank line here if we find one
+                if (checkBlankLine(line)) {
+                    continue;
+                }
+            }
+            process.waitFor();
+
+           if (match_cnt == 2) {
+               if (match_list[0].equals(match_list[1])) {
+                   System.err.println();
+                   System.err.println("ERROR: matching lock lines:");
+                   System.err.println("ERROR: line[0]'" + match_list[0] + "'");
+                   System.err.println("ERROR: line[1]'" + match_list[1] + "'");
+                   error_cnt++;
+               }
+           }
+
+            // slight delay between jstack launches
+            Thread.sleep(500);
+        }
+    }
+
+    // This helper relies on RuntimeMXBean.getName() returning a string
+    // that looks like this: 5436@mt-haku
+    //
+    // The testlibrary has tryFindJvmPid(), but that uses a separate
+    // process which is much more expensive for finding out your own PID.
+    //
+    static String getPid() {
+        RuntimeMXBean runtimebean = ManagementFactory.getRuntimeMXBean();
+        String vmname = runtimebean.getName();
+        int i = vmname.indexOf('@');
+        if (i != -1) {
+            vmname = vmname.substring(0, i);
+        }
+        return vmname;
+    }
+
+    static void usage() {
+        System.err.println("Usage: " +
+            "java TestThreadDumpMonitorContention [-v] [n_samples]");
+        System.exit(1);
+    }
+}
--- a/test/serviceability/ParserTest.java	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/serviceability/ParserTest.java	Thu Jun 12 19:03:25 2014 -0700
@@ -22,10 +22,10 @@
  */
 
 /*
- * @test ParserTest
+ * @test
  * @summary Test that the diagnostic command arguemnt parser works
  * @library /testlibrary /testlibrary/whitebox
- * @build ParserTest
+ * @build ClassFileInstaller sun.hotspot.WhiteBox sun.hotspot.parser.*
  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI ParserTest
  */
--- a/test/serviceability/attach/AttachWithStalePidFile.java	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/serviceability/attach/AttachWithStalePidFile.java	Thu Jun 12 19:03:25 2014 -0700
@@ -27,7 +27,7 @@
  * @key regression
  * @summary Regression test for attach issue where stale pid files in /tmp lead to connection issues
  * @library /testlibrary
- * @compile AttachWithStalePidFileTarget.java
+ * @build com.oracle.java.testlibrary.* AttachWithStalePidFileTarget
  * @run main AttachWithStalePidFile
  */
 
--- a/test/serviceability/dcmd/DynLibDcmdTest.java	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/serviceability/dcmd/DynLibDcmdTest.java	Thu Jun 12 19:03:25 2014 -0700
@@ -29,7 +29,7 @@
  * @test
  * @summary Test of VM.dynlib diagnostic command via MBean
  * @library /testlibrary
- * @compile DcmdUtil.java
+ * @build com.oracle.java.testlibrary.* DcmdUtil
  * @run main DynLibDcmdTest
  */
 
--- a/test/serviceability/jvmti/GetObjectSizeOverflow.java	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/serviceability/jvmti/GetObjectSizeOverflow.java	Thu Jun 12 19:03:25 2014 -0700
@@ -29,7 +29,7 @@
  * @test
  * @bug 8027230
  * @library /testlibrary
- * @build GetObjectSizeOverflowAgent
+ * @build ClassFileInstaller com.oracle.java.testlibrary.* GetObjectSizeOverflowAgent
  * @run main ClassFileInstaller GetObjectSizeOverflowAgent
  * @run main GetObjectSizeOverflow
  */
--- a/test/serviceability/jvmti/TestRedefineWithUnresolvedClass.java	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/serviceability/jvmti/TestRedefineWithUnresolvedClass.java	Thu Jun 12 19:03:25 2014 -0700
@@ -26,7 +26,7 @@
  * @summary Redefine a class with an UnresolvedClass reference in the constant pool.
  * @bug 8035150
  * @library /testlibrary
- * @build UnresolvedClassAgent com.oracle.java.testlibrary.ProcessTools com.oracle.java.testlibrary.OutputAnalyzer
+ * @build com.oracle.java.testlibrary.* UnresolvedClassAgent
  * @run main TestRedefineWithUnresolvedClass
  */
 
--- a/test/serviceability/sa/jmap-hashcode/Test8028623.java	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/serviceability/sa/jmap-hashcode/Test8028623.java	Thu Jun 12 19:03:25 2014 -0700
@@ -26,6 +26,7 @@
  * @bug 8028623
  * @summary Test hashing of extended characters in Serviceability Agent.
  * @library /testlibrary
+ * @build com.oracle.java.testlibrary.*
  * @compile -encoding utf8 Test8028623.java
  * @run main Test8028623
  */
--- a/test/serviceability/sa/jmap-hprof/JMapHProfLargeHeapTest.java	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/serviceability/sa/jmap-hprof/JMapHProfLargeHeapTest.java	Thu Jun 12 19:03:25 2014 -0700
@@ -44,7 +44,7 @@
  * @key regression
  * @summary Regression test for hprof export issue due to large heaps (>2G)
  * @library /testlibrary
- * @compile JMapHProfLargeHeapProc.java
+ * @build com.oracle.java.testlibrary.* JMapHProfLargeHeapProc
  * @run main JMapHProfLargeHeapTest
  */
 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/RedefineClassHelper.java	Thu Jun 12 19:03:25 2014 -0700
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2014, 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.
+ */
+
+import java.io.PrintWriter;
+import java.lang.instrument.*;
+import com.oracle.java.testlibrary.*;
+
+/*
+ * Helper class to write tests that redefine classes.
+ * When main method is run, it will create a redefineagent.jar that can be used
+ * with the -javaagent option to support redefining classes in jtreg tests.
+ *
+ * See sample test in test/testlibrary_tests/RedefineClassTest.java
+ */
+public class RedefineClassHelper {
+
+    public static Instrumentation instrumentation;
+    public static void premain(String agentArgs, Instrumentation inst) {
+        instrumentation = inst;
+    }
+
+    /**
+     * Redefine a class
+     *
+     * @param clazz Class to redefine
+     * @param javacode String with the new java code for the class to be redefined
+     */
+    public static void redefineClass(Class clazz, String javacode) throws Exception {
+        byte[] bytecode = InMemoryJavaCompiler.compile(clazz.getName(), javacode);
+        redefineClass(clazz, bytecode);
+    }
+
+    /**
+     * Redefine a class
+     *
+     * @param clazz Class to redefine
+     * @param bytecode byte[] with the new class
+     */
+    public static void redefineClass(Class clazz, byte[] bytecode) throws Exception {
+        instrumentation.redefineClasses(new ClassDefinition(clazz, bytecode));
+    }
+
+    /**
+     * Main method to be invoked before test to create the redefineagent.jar
+     */
+    public static void main(String[] args) throws Exception {
+        ClassFileInstaller.main("RedefineClassHelper");
+
+        PrintWriter pw = new PrintWriter("MANIFEST.MF");
+        pw.println("Premain-Class: RedefineClassHelper");
+        pw.println("Can-Redefine-Classes: true");
+        pw.close();
+
+        sun.tools.jar.Main jarTool = new sun.tools.jar.Main(System.out, System.err, "jar");
+        if (!jarTool.run(new String[] { "-cmf", "MANIFEST.MF", "redefineagent.jar", "RedefineClassHelper.class" })) {
+            throw new Exception("jar operation failed");
+        }
+    }
+}
--- a/test/testlibrary/ctw/test/ClassesDirTest.java	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/testlibrary/ctw/test/ClassesDirTest.java	Thu Jun 12 19:03:25 2014 -0700
@@ -22,10 +22,10 @@
  */
 
 /*
- * @test ClassesDirTest
+ * @test
  * @bug 8012447
  * @library /testlibrary /testlibrary/whitebox /testlibrary/ctw/src
- * @build sun.hotspot.tools.ctw.CompileTheWorld sun.hotspot.WhiteBox ClassesDirTest Foo Bar
+ * @build ClassFileInstaller sun.hotspot.tools.ctw.CompileTheWorld sun.hotspot.WhiteBox Foo Bar
  * @run main ClassFileInstaller sun.hotspot.WhiteBox Foo Bar
  * @run main ClassesDirTest prepare
  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Dsun.hotspot.tools.ctw.logfile=ctw.log sun.hotspot.tools.ctw.CompileTheWorld classes
--- a/test/testlibrary/ctw/test/ClassesListTest.java	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/testlibrary/ctw/test/ClassesListTest.java	Thu Jun 12 19:03:25 2014 -0700
@@ -22,10 +22,10 @@
  */
 
 /*
- * @test ClassesListTest
+ * @test
  * @bug 8012447
  * @library /testlibrary /testlibrary/whitebox /testlibrary/ctw/src
- * @build sun.hotspot.tools.ctw.CompileTheWorld sun.hotspot.WhiteBox ClassesListTest Foo Bar
+ * @build ClassFileInstaller sun.hotspot.tools.ctw.CompileTheWorld sun.hotspot.WhiteBox Foo Bar
  * @run main ClassFileInstaller sun.hotspot.WhiteBox Foo Bar
  * @run main ClassesListTest prepare
  * @run main/othervm/timeout=600 -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Dsun.hotspot.tools.ctw.logfile=ctw.log sun.hotspot.tools.ctw.CompileTheWorld classes.lst
--- a/test/testlibrary/ctw/test/JarDirTest.java	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/testlibrary/ctw/test/JarDirTest.java	Thu Jun 12 19:03:25 2014 -0700
@@ -22,10 +22,10 @@
  */
 
 /*
- * @test JarDirTest
+ * @test
  * @bug 8012447
  * @library /testlibrary /testlibrary/whitebox /testlibrary/ctw/src
- * @build sun.hotspot.tools.ctw.CompileTheWorld sun.hotspot.WhiteBox JarDirTest Foo Bar
+ * @build ClassFileInstaller com.oracle.java.testlibrary.* sun.hotspot.tools.ctw.CompileTheWorld sun.hotspot.WhiteBox Foo Bar
  * @run main ClassFileInstaller sun.hotspot.WhiteBox Foo Bar
  * @run main JarDirTest prepare
  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Dsun.hotspot.tools.ctw.logfile=ctw.log sun.hotspot.tools.ctw.CompileTheWorld jars/*
--- a/test/testlibrary/ctw/test/JarsTest.java	Thu Jun 12 18:42:33 2014 +0000
+++ b/test/testlibrary/ctw/test/JarsTest.java	Thu Jun 12 19:03:25 2014 -0700
@@ -22,10 +22,10 @@
  */
 
 /*
- * @test JarsTest
+ * @test
  * @bug 8012447
  * @library /testlibrary /testlibrary/whitebox /testlibrary/ctw/src
- * @build sun.hotspot.tools.ctw.CompileTheWorld sun.hotspot.WhiteBox JarsTest Foo Bar
+ * @build ClassFileInstaller com.oracle.java.testlibrary.* sun.hotspot.tools.ctw.CompileTheWorld sun.hotspot.WhiteBox Foo Bar
  * @run main ClassFileInstaller sun.hotspot.WhiteBox Foo Bar
  * @run main JarsTest prepare
  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Dsun.hotspot.tools.ctw.logfile=ctw.log sun.hotspot.tools.ctw.CompileTheWorld foo.jar bar.jar
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary_tests/RedefineClassTest.java	Thu Jun 12 19:03:25 2014 -0700
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2014, 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
+ * @library /testlibrary
+ * @summary Proof of concept test for RedefineClassHelper
+ * @build RedefineClassHelper
+ * @run main RedefineClassHelper
+ * @run main/othervm -javaagent:redefineagent.jar RedefineClassTest
+ */
+
+import static com.oracle.java.testlibrary.Asserts.*;
+import com.oracle.java.testlibrary.*;
+
+/*
+ * Proof of concept test for the test utility class RedefineClassHelper
+ */
+public class RedefineClassTest {
+
+    public static String newClass = "class RedefineClassTest$A { public int Method() { return 2; } }";
+    public static void main(String[] args) throws Exception {
+        A a = new A();
+        assertTrue(a.Method() == 1);
+        RedefineClassHelper.redefineClass(A.class, newClass);
+        assertTrue(a.Method() == 2);
+    }
+
+    static class A {
+        public int Method() {
+            return 1;
+        }
+    }
+}