# HG changeset patch
# User amurillo
# Date 1414103527 25200
# Node ID 8b9ec2da541a74ac698560b6a2bc45fccb789919
# Parent  8538a606a105b92d273899b640bc8b5e9b6f4fdb# Parent  8e15758b2e94e80c3356b933a690284934ef6892
Merge

diff -r 8538a606a105 -r 8b9ec2da541a make/excludeSrc.make
--- a/make/excludeSrc.make	Wed Oct 22 11:18:17 2014 -0700
+++ b/make/excludeSrc.make	Thu Oct 23 15:32:07 2014 -0700
@@ -97,6 +97,7 @@
 	ageTable.cpp							\
 	collectorCounters.cpp						\
 	cSpaceCounters.cpp						\
+	gcId.cpp							\
 	gcPolicyCounters.cpp						\
 	gcStats.cpp							\
 	gcTimer.cpp							\
diff -r 8538a606a105 -r 8b9ec2da541a make/hotspot_version
--- a/make/hotspot_version	Wed Oct 22 11:18:17 2014 -0700
+++ b/make/hotspot_version	Thu Oct 23 15:32:07 2014 -0700
@@ -35,7 +35,7 @@
 
 HS_MAJOR_VER=25
 HS_MINOR_VER=40
-HS_BUILD_NUMBER=15
+HS_BUILD_NUMBER=16
 
 JDK_MAJOR_VER=1
 JDK_MINOR_VER=8
diff -r 8538a606a105 -r 8b9ec2da541a make/jprt.properties
--- a/make/jprt.properties	Wed Oct 22 11:18:17 2014 -0700
+++ b/make/jprt.properties	Thu Oct 23 15:32:07 2014 -0700
@@ -374,21 +374,25 @@
   ${jprt.my.windows.i586}-fastdebug-c2-internalvmtests, \
   ${jprt.my.windows.x64}-fastdebug-c2-internalvmtests
 
-jprt.make.rule.test.targets.standard.wbapi = \
-  ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-wbapitest, \
-  ${jprt.my.solaris.x64}-{product|fastdebug}-c2-wbapitest, \
-  ${jprt.my.linux.i586}-{product|fastdebug}-c2-wbapitest, \
-  ${jprt.my.linux.x64}-{product|fastdebug}-c2-wbapitest, \
-  ${jprt.my.windows.i586}-{product|fastdebug}-c2-wbapitest, \
-  ${jprt.my.windows.x64}-{product|fastdebug}-c2-wbapitest, \
-  ${jprt.my.linux.i586}-{product|fastdebug}-c1-wbapitest, \
-  ${jprt.my.windows.i586}-{product|fastdebug}-c1-wbapitest
+jprt.make.rule.test.targets.standard.reg.group = \
+  ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GROUP, \
+  ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GROUP, \
+  ${jprt.my.linux.i586}-{product|fastdebug}-c2-GROUP, \
+  ${jprt.my.linux.x64}-{product|fastdebug}-c2-GROUP, \
+  ${jprt.my.windows.i586}-{product|fastdebug}-c2-GROUP, \
+  ${jprt.my.windows.x64}-{product|fastdebug}-c2-GROUP, \
+  ${jprt.my.linux.i586}-{product|fastdebug}-c1-GROUP, \
+  ${jprt.my.windows.i586}-{product|fastdebug}-c1-GROUP
 
 jprt.make.rule.test.targets.standard = \
   ${jprt.make.rule.test.targets.standard.client}, \
   ${jprt.make.rule.test.targets.standard.server}, \
   ${jprt.make.rule.test.targets.standard.internalvmtests}, \
-  ${jprt.make.rule.test.targets.standard.wbapi}
+  ${jprt.make.rule.test.targets.standard.reg.group:GROUP=hotspot_wbapitest}, \
+  ${jprt.make.rule.test.targets.standard.reg.group:GROUP=hotspot_compiler}, \
+  ${jprt.make.rule.test.targets.standard.reg.group:GROUP=hotspot_gc}, \
+  ${jprt.make.rule.test.targets.standard.reg.group:GROUP=hotspot_runtime}, \
+  ${jprt.make.rule.test.targets.standard.reg.group:GROUP=hotspot_serviceability}
 
 jprt.make.rule.test.targets.embedded = \
   ${jprt.make.rule.test.targets.standard.client}
diff -r 8538a606a105 -r 8b9ec2da541a src/cpu/x86/vm/vm_version_x86.cpp
--- a/src/cpu/x86/vm/vm_version_x86.cpp	Wed Oct 22 11:18:17 2014 -0700
+++ b/src/cpu/x86/vm/vm_version_x86.cpp	Thu Oct 23 15:32:07 2014 -0700
@@ -873,14 +873,19 @@
   if (supports_bmi1()) {
     // tzcnt does not require VEX prefix
     if (FLAG_IS_DEFAULT(UseCountTrailingZerosInstruction)) {
-      UseCountTrailingZerosInstruction = true;
+      if (!UseBMI1Instructions && !FLAG_IS_DEFAULT(UseBMI1Instructions)) {
+        // Don't use tzcnt if BMI1 is switched off on command line.
+        UseCountTrailingZerosInstruction = false;
+      } else {
+        UseCountTrailingZerosInstruction = true;
+      }
     }
   } else if (UseCountTrailingZerosInstruction) {
     warning("tzcnt instruction is not available on this CPU");
     FLAG_SET_DEFAULT(UseCountTrailingZerosInstruction, false);
   }
 
-  // BMI instructions use an encoding with VEX prefix.
+  // BMI instructions (except tzcnt) use an encoding with VEX prefix.
   // VEX prefix is generated only when AVX > 0.
   if (supports_bmi1() && supports_avx()) {
     if (FLAG_IS_DEFAULT(UseBMI1Instructions)) {
diff -r 8538a606a105 -r 8b9ec2da541a src/share/vm/classfile/classFileParser.cpp
--- a/src/share/vm/classfile/classFileParser.cpp	Wed Oct 22 11:18:17 2014 -0700
+++ b/src/share/vm/classfile/classFileParser.cpp	Thu Oct 23 15:32:07 2014 -0700
@@ -4165,8 +4165,12 @@
         tty->print("[Loaded %s from %s]\n", this_klass->external_name(),
                    cfs->source());
       } else if (class_loader.is_null()) {
-        if (THREAD->is_Java_thread()) {
-          Klass* caller = ((JavaThread*)THREAD)->security_get_caller_class(1);
+        Klass* caller =
+            THREAD->is_Java_thread()
+                ? ((JavaThread*)THREAD)->security_get_caller_class(1)
+                : NULL;
+        // caller can be NULL, for example, during a JVMTI VM_Init hook
+        if (caller != NULL) {
           tty->print("[Loaded %s by instance of %s]\n",
                      this_klass->external_name(),
                      InstanceKlass::cast(caller)->external_name());
diff -r 8538a606a105 -r 8b9ec2da541a src/share/vm/opto/doCall.cpp
--- a/src/share/vm/opto/doCall.cpp	Wed Oct 22 11:18:17 2014 -0700
+++ b/src/share/vm/opto/doCall.cpp	Thu Oct 23 15:32:07 2014 -0700
@@ -799,10 +799,16 @@
     // each arm of the Phi.  If I know something clever about the exceptions
     // I'm loading the class from, I can replace the LoadKlass with the
     // klass constant for the exception oop.
-    if( ex_node->is_Phi() ) {
-      ex_klass_node = new (C) PhiNode( ex_node->in(0), TypeKlassPtr::OBJECT );
-      for( uint i = 1; i < ex_node->req(); i++ ) {
-        Node* p = basic_plus_adr( ex_node->in(i), ex_node->in(i), oopDesc::klass_offset_in_bytes() );
+    if (ex_node->is_Phi()) {
+      ex_klass_node = new (C) PhiNode(ex_node->in(0), TypeKlassPtr::OBJECT);
+      for (uint i = 1; i < ex_node->req(); i++) {
+        Node* ex_in = ex_node->in(i);
+        if (ex_in == top() || ex_in == NULL) {
+          // This path was not taken.
+          ex_klass_node->init_req(i, top());
+          continue;
+        }
+        Node* p = basic_plus_adr(ex_in, ex_in, oopDesc::klass_offset_in_bytes());
         Node* k = _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), p, TypeInstPtr::KLASS, TypeKlassPtr::OBJECT) );
         ex_klass_node->init_req( i, k );
       }
diff -r 8538a606a105 -r 8b9ec2da541a src/share/vm/prims/whitebox.cpp
--- a/src/share/vm/prims/whitebox.cpp	Wed Oct 22 11:18:17 2014 -0700
+++ b/src/share/vm/prims/whitebox.cpp	Thu Oct 23 15:32:07 2014 -0700
@@ -331,7 +331,36 @@
   }
 WB_END
 
+WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
+  // Test that we can downgrade NMT levels but not upgrade them.
+  if (MemTracker::tracking_level() == NMT_off) {
+    MemTracker::transition_to(NMT_off);
+    return MemTracker::tracking_level() == NMT_off;
+  } else {
+    assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
+    MemTracker::transition_to(NMT_summary);
+    assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
 
+    // Can't go to detail once NMT is set to summary.
+    MemTracker::transition_to(NMT_detail);
+    assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
+
+    // Shutdown sets tracking level to minimal.
+    MemTracker::shutdown();
+    assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
+
+    // Once the tracking level is minimal, we cannot increase to summary.
+    // The code ignores this request instead of asserting because if the malloc site
+    // table overflows in another thread, it tries to change the code to summary.
+    MemTracker::transition_to(NMT_summary);
+    assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
+
+    // Really can never go up to detail, verify that the code would never do this.
+    MemTracker::transition_to(NMT_detail);
+    assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
+    return MemTracker::tracking_level() == NMT_minimal;
+  }
+WB_END
 #endif // INCLUDE_NMT
 
 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
@@ -936,6 +965,7 @@
   {CC"NMTReleaseMemory",    CC"(JJ)V",                (void*)&WB_NMTReleaseMemory   },
   {CC"NMTOverflowHashBucket", CC"(J)V",               (void*)&WB_NMTOverflowHashBucket},
   {CC"NMTIsDetailSupported",CC"()Z",                  (void*)&WB_NMTIsDetailSupported},
+  {CC"NMTChangeTrackingLevel", CC"()Z",               (void*)&WB_NMTChangeTrackingLevel},
 #endif // INCLUDE_NMT
   {CC"deoptimizeAll",      CC"()V",                   (void*)&WB_DeoptimizeAll     },
   {CC"deoptimizeMethod",   CC"(Ljava/lang/reflect/Executable;Z)I",
diff -r 8538a606a105 -r 8b9ec2da541a src/share/vm/runtime/os.hpp
--- a/src/share/vm/runtime/os.hpp	Wed Oct 22 11:18:17 2014 -0700
+++ b/src/share/vm/runtime/os.hpp	Thu Oct 23 15:32:07 2014 -0700
@@ -214,13 +214,14 @@
 
   // Interface for detecting multiprocessor system
   static inline bool is_MP() {
-#if !INCLUDE_NMT
-    assert(_processor_count > 0, "invalid processor count");
-    return _processor_count > 1 || AssumeMP;
-#else
-    // NMT needs atomic operations before this initialization.
-    return true;
-#endif
+    // During bootstrap if _processor_count is not yet initialized
+    // we claim to be MP as that is safest. If any platform has a
+    // stub generator that might be triggered in this phase and for
+    // which being declared MP when in fact not, is a problem - then
+    // the bootstrap routine for the stub generator needs to check
+    // the processor count directly and leave the bootstrap routine
+    // in place until called after initialization has ocurred.
+    return (_processor_count != 1) || AssumeMP;
   }
   static julong available_memory();
   static julong physical_memory();
diff -r 8538a606a105 -r 8b9ec2da541a src/share/vm/services/mallocTracker.cpp
--- a/src/share/vm/services/mallocTracker.cpp	Wed Oct 22 11:18:17 2014 -0700
+++ b/src/share/vm/services/mallocTracker.cpp	Thu Oct 23 15:32:07 2014 -0700
@@ -51,14 +51,6 @@
   return amount;
 }
 
-
-void MallocMemorySnapshot::reset() {
-  _tracking_header.reset();
-  for (int index = 0; index < mt_number_of_types; index ++) {
-    _malloc[index].reset();
-  }
-}
-
 // Make adjustment by subtracting chunks used by arenas
 // from total chunks to get total free chunck size
 void MallocMemorySnapshot::make_adjustment() {
@@ -116,14 +108,9 @@
 bool MallocTracker::transition(NMT_TrackingLevel from, NMT_TrackingLevel to) {
   assert(from != NMT_off, "Can not transition from off state");
   assert(to != NMT_off, "Can not transition to off state");
-  if (from == NMT_minimal) {
-    MallocMemorySummary::reset();
-  }
+  assert (from != NMT_minimal, "cannot transition from minimal state");
 
-  if (to == NMT_detail) {
-    assert(from == NMT_minimal || from == NMT_summary, "Just check");
-    return MallocSiteTable::initialize();
-  } else if (from == NMT_detail) {
+  if (from == NMT_detail) {
     assert(to == NMT_minimal || to == NMT_summary, "Just check");
     MallocSiteTable::shutdown();
   }
diff -r 8538a606a105 -r 8b9ec2da541a src/share/vm/services/mallocTracker.hpp
--- a/src/share/vm/services/mallocTracker.hpp	Wed Oct 22 11:18:17 2014 -0700
+++ b/src/share/vm/services/mallocTracker.hpp	Thu Oct 23 15:32:07 2014 -0700
@@ -51,14 +51,6 @@
     DEBUG_ONLY(_peak_size  = 0;)
   }
 
-  // Reset counters
-  void reset() {
-    _size  = 0;
-    _count = 0;
-    DEBUG_ONLY(_peak_size = 0;)
-    DEBUG_ONLY(_peak_count = 0;)
-  }
-
   inline void allocate(size_t sz) {
     Atomic::add(1, (volatile MemoryCounterType*)&_count);
     if (sz > 0) {
@@ -124,11 +116,6 @@
     _arena.resize(sz);
   }
 
-  void reset() {
-    _malloc.reset();
-    _arena.reset();
-  }
-
   inline size_t malloc_size()  const { return _malloc.size(); }
   inline size_t malloc_count() const { return _malloc.count();}
   inline size_t arena_size()   const { return _arena.size();  }
@@ -176,8 +163,6 @@
     return s->by_type(mtThreadStack)->malloc_count();
   }
 
-  void reset();
-
   void copy_to(MallocMemorySnapshot* s) {
     s->_tracking_header = _tracking_header;
     for (int index = 0; index < mt_number_of_types; index ++) {
@@ -240,11 +225,6 @@
      return as_snapshot()->malloc_overhead()->size();
    }
 
-   // Reset all counters to zero
-   static void reset() {
-     as_snapshot()->reset();
-   }
-
   static MallocMemorySnapshot* as_snapshot() {
     return (MallocMemorySnapshot*)_snapshot;
   }
diff -r 8538a606a105 -r 8b9ec2da541a src/share/vm/services/memBaseline.hpp
--- a/src/share/vm/services/memBaseline.hpp	Wed Oct 22 11:18:17 2014 -0700
+++ b/src/share/vm/services/memBaseline.hpp	Thu Oct 23 15:32:07 2014 -0700
@@ -90,10 +90,6 @@
     _class_count(0) {
   }
 
-  ~MemBaseline() {
-    reset();
-  }
-
   bool baseline(bool summaryOnly = true);
 
   BaselineType baseline_type() const { return _baseline_type; }
@@ -169,8 +165,7 @@
   // reset the baseline for reuse
   void reset() {
     _baseline_type = Not_baselined;
-    _malloc_memory_snapshot.reset();
-    _virtual_memory_snapshot.reset();
+    // _malloc_memory_snapshot and _virtual_memory_snapshot are copied over.
     _class_count  = 0;
 
     _malloc_sites.clear();
diff -r 8538a606a105 -r 8b9ec2da541a src/share/vm/services/memReporter.hpp
--- a/src/share/vm/services/memReporter.hpp	Wed Oct 22 11:18:17 2014 -0700
+++ b/src/share/vm/services/memReporter.hpp	Thu Oct 23 15:32:07 2014 -0700
@@ -96,20 +96,6 @@
   size_t                  _class_count;
 
  public:
-  // Report summary tracking data from global snapshots directly.
-  // This constructor is used for final reporting and hs_err reporting.
-  MemSummaryReporter(MallocMemorySnapshot* malloc_snapshot,
-    VirtualMemorySnapshot* vm_snapshot, outputStream* output,
-    size_t class_count = 0, size_t scale = K) :
-    MemReporterBase(output, scale),
-    _malloc_snapshot(malloc_snapshot),
-    _vm_snapshot(vm_snapshot) {
-    if (class_count == 0) {
-      _class_count = InstanceKlass::number_of_instance_classes();
-    } else {
-      _class_count = class_count;
-    }
-  }
   // This constructor is for normal reporting from a recent baseline.
   MemSummaryReporter(MemBaseline& baseline, outputStream* output,
     size_t scale = K) : MemReporterBase(output, scale),
diff -r 8538a606a105 -r 8b9ec2da541a src/share/vm/services/memTracker.cpp
--- a/src/share/vm/services/memTracker.cpp	Wed Oct 22 11:18:17 2014 -0700
+++ b/src/share/vm/services/memTracker.cpp	Thu Oct 23 15:32:07 2014 -0700
@@ -144,11 +144,9 @@
 }
 
 
-// Shutdown can only be issued via JCmd, and NMT JCmd is serialized
-// by lock
+// Shutdown can only be issued via JCmd, and NMT JCmd is serialized by lock
 void MemTracker::shutdown() {
-  // We can only shutdown NMT to minimal tracking level if it is
-  // ever on.
+  // We can only shutdown NMT to minimal tracking level if it is ever on.
   if (tracking_level () > NMT_minimal) {
     transition_to(NMT_minimal);
   }
@@ -157,45 +155,36 @@
 bool MemTracker::transition_to(NMT_TrackingLevel level) {
   NMT_TrackingLevel current_level = tracking_level();
 
+  assert(level != NMT_off || current_level == NMT_off, "Cannot transition NMT to off");
+
   if (current_level == level) {
     return true;
   } else if (current_level > level) {
-    // Downgrade tracking level, we want to lower the tracking
-    // level first
+    // Downgrade tracking level, we want to lower the tracking level first
     _tracking_level = level;
     // Make _tracking_level visible immediately.
     OrderAccess::fence();
     VirtualMemoryTracker::transition(current_level, level);
     MallocTracker::transition(current_level, level);
-
-    if (level == NMT_minimal) _baseline.reset();
   } else {
-    VirtualMemoryTracker::transition(current_level, level);
-    MallocTracker::transition(current_level, level);
-
-    _tracking_level = level;
-    // Make _tracking_level visible immediately.
-    OrderAccess::fence();
+    // Upgrading tracking level is not supported and has never been supported.
+    // Allocating and deallocating malloc tracking structures is not thread safe and
+    // leads to inconsistencies unless a lot coarser locks are added.
   }
-
   return true;
 }
 
-void MemTracker::final_report(outputStream* output) {
-  assert(output != NULL, "No output stream");
-  if (tracking_level() >= NMT_summary) {
-    MallocMemorySnapshot* malloc_memory_snapshot =
-      MallocMemorySummary::as_snapshot();
-    malloc_memory_snapshot->make_adjustment();
-
-    VirtualMemorySnapshot* virtual_memory_snapshot =
-      VirtualMemorySummary::as_snapshot();
-
-    MemSummaryReporter rptr(malloc_memory_snapshot,
-      virtual_memory_snapshot, output);
-    rptr.report();
-    // shutdown NMT, the data no longer accurate
-    shutdown();
+void MemTracker::report(bool summary_only, outputStream* output) {
+ assert(output != NULL, "No output stream");
+  MemBaseline baseline;
+  if (baseline.baseline(summary_only)) {
+    if (summary_only) {
+      MemSummaryReporter rpt(baseline, output);
+      rpt.report();
+    } else {
+      MemDetailReporter rpt(baseline, output);
+      rpt.report();
+    }
   }
 }
 
diff -r 8538a606a105 -r 8b9ec2da541a src/share/vm/services/memTracker.hpp
--- a/src/share/vm/services/memTracker.hpp	Wed Oct 22 11:18:17 2014 -0700
+++ b/src/share/vm/services/memTracker.hpp	Thu Oct 23 15:32:07 2014 -0700
@@ -70,6 +70,7 @@
   static inline void release_thread_stack(void* addr, size_t size) { }
 
   static void final_report(outputStream*) { }
+  static void error_report(outputStream*) { }
 };
 
 #else
@@ -270,13 +271,20 @@
   // other tools.
   static inline Mutex* query_lock() { return _query_lock; }
 
-  // Make a final report and shutdown.
-  // This function generates summary report without creating snapshots,
-  // to avoid additional memory allocation. It uses native memory summary
-  // counters, and makes adjustment to them, once the adjustment is made,
-  // the counters are no longer accurate. As the result, this function
-  // should only be used for final reporting before shutting down.
-  static void final_report(outputStream*);
+  // Make a final report or report for hs_err file.
+  static void error_report(outputStream* output) {
+    if (tracking_level() >= NMT_summary) {
+      report(true, output);  // just print summary for error case.
+    }
+   }
+
+  static void final_report(outputStream* output) {
+    NMT_TrackingLevel level = tracking_level();
+    if (level >= NMT_summary) {
+      report(level == NMT_summary, output);
+    }
+  }
+
 
   // Stored baseline
   static inline MemBaseline& get_baseline() {
@@ -291,6 +299,7 @@
 
  private:
   static NMT_TrackingLevel init_tracking_level();
+  static void report(bool summary_only, outputStream* output);
 
  private:
   // Tracking level
diff -r 8538a606a105 -r 8b9ec2da541a src/share/vm/services/virtualMemoryTracker.cpp
--- a/src/share/vm/services/virtualMemoryTracker.cpp	Wed Oct 22 11:18:17 2014 -0700
+++ b/src/share/vm/services/virtualMemoryTracker.cpp	Thu Oct 23 15:32:07 2014 -0700
@@ -443,26 +443,28 @@
 bool VirtualMemoryTracker::walk_virtual_memory(VirtualMemoryWalker* walker) {
   assert(_reserved_regions != NULL, "Sanity check");
   ThreadCritical tc;
-  LinkedListNode<ReservedMemoryRegion>* head = _reserved_regions->head();
-  while (head != NULL) {
-    const ReservedMemoryRegion* rgn = head->peek();
-    if (!walker->do_allocation_site(rgn)) {
-      return false;
+  // Check that the _reserved_regions haven't been deleted.
+  if (_reserved_regions != NULL) {
+    LinkedListNode<ReservedMemoryRegion>* head = _reserved_regions->head();
+    while (head != NULL) {
+      const ReservedMemoryRegion* rgn = head->peek();
+      if (!walker->do_allocation_site(rgn)) {
+        return false;
+      }
+      head = head->next();
     }
-    head = head->next();
-  }
+   }
   return true;
 }
 
 // Transition virtual memory tracking level.
 bool VirtualMemoryTracker::transition(NMT_TrackingLevel from, NMT_TrackingLevel to) {
-  if (from == NMT_minimal) {
-    assert(to == NMT_summary || to == NMT_detail, "Just check");
-    VirtualMemorySummary::reset();
-  } else if (to == NMT_minimal) {
+  assert (from != NMT_minimal, "cannot convert from the lowest tracking level to anything");
+  if (to == NMT_minimal) {
     assert(from == NMT_summary || from == NMT_detail, "Just check");
     // Clean up virtual memory tracking data structures.
     ThreadCritical tc;
+    // Check for potential race with other thread calling transition
     if (_reserved_regions != NULL) {
       delete _reserved_regions;
       _reserved_regions = NULL;
diff -r 8538a606a105 -r 8b9ec2da541a src/share/vm/services/virtualMemoryTracker.hpp
--- a/src/share/vm/services/virtualMemoryTracker.hpp	Wed Oct 22 11:18:17 2014 -0700
+++ b/src/share/vm/services/virtualMemoryTracker.hpp	Thu Oct 23 15:32:07 2014 -0700
@@ -62,11 +62,6 @@
     _committed -= sz;
   }
 
-  void reset() {
-    _reserved  = 0;
-    _committed = 0;
-  }
-
   inline size_t reserved()  const { return _reserved;  }
   inline size_t committed() const { return _committed; }
 };
@@ -123,12 +118,6 @@
     return amount;
   }
 
-  inline void reset() {
-    for (int index = 0; index < mt_number_of_types; index ++) {
-      _virtual_memory[index].reset();
-    }
-  }
-
   void copy_to(VirtualMemorySnapshot* s) {
     for (int index = 0; index < mt_number_of_types; index ++) {
       s->_virtual_memory[index] = _virtual_memory[index];
@@ -174,10 +163,6 @@
     as_snapshot()->copy_to(s);
   }
 
-  static inline void reset() {
-    as_snapshot()->reset();
-  }
-
   static VirtualMemorySnapshot* as_snapshot() {
     return (VirtualMemorySnapshot*)_snapshot;
   }
diff -r 8538a606a105 -r 8b9ec2da541a src/share/vm/utilities/vmError.cpp
--- a/src/share/vm/utilities/vmError.cpp	Wed Oct 22 11:18:17 2014 -0700
+++ b/src/share/vm/utilities/vmError.cpp	Thu Oct 23 15:32:07 2014 -0700
@@ -774,7 +774,7 @@
 
   STEP(228, "(Native Memory Tracking)" )
      if (_verbose) {
-       MemTracker::final_report(st);
+       MemTracker::error_report(st);
      }
 
   STEP(230, "" )
diff -r 8538a606a105 -r 8b9ec2da541a test/Makefile
--- a/test/Makefile	Wed Oct 22 11:18:17 2014 -0700
+++ b/test/Makefile	Thu Oct 23 15:32:07 2014 -0700
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 1995, 2013, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 1995, 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
@@ -23,14 +23,36 @@
 #
 
 #
-# Makefile to run various jdk tests
+# Makefile to run various hotspot tests
 #
 
 GETMIXEDPATH=echo
 
-# Get OS/ARCH specifics
-OSNAME = $(shell uname -s)
-ifeq ($(OSNAME), SunOS)
+# Utilities used
+AWK       = awk
+CAT       = cat
+CD        = cd
+CHMOD     = chmod
+CP        = cp
+CUT       = cut
+DIRNAME   = dirname
+ECHO      = echo
+EGREP     = egrep
+EXPAND    = expand
+FIND      = find
+MKDIR     = mkdir
+PWD       = pwd
+SED       = sed
+SORT      = sort
+TEE       = tee
+UNAME     = uname
+UNIQ      = uniq
+WC        = wc
+ZIP       = zip
+
+# Get OS name from uname (Cygwin inexplicably adds _NT-5.1)
+UNAME_S := $(shell $(UNAME) -s | $(CUT) -f1 -d_)
+ifeq ($(UNAME_S), SunOS)
   PLATFORM = solaris
   SLASH_JAVA = /java
   ARCH = $(shell uname -p)
@@ -38,7 +60,7 @@
     ARCH=i586
   endif
 endif
-ifeq ($(OSNAME), Linux)
+ifeq ($(UNAME_S), Linux)
   PLATFORM = linux
   SLASH_JAVA = /java
   ARCH = $(shell uname -m)
@@ -46,7 +68,7 @@
     ARCH = i586
   endif
 endif
-ifeq ($(OSNAME), Darwin)
+ifeq ($(UNAME_S), Darwin)
   PLATFORM = bsd
   SLASH_JAVA = /java
   ARCH = $(shell uname -m)
@@ -54,7 +76,7 @@
     ARCH = i586
   endif
 endif
-ifeq ($(findstring BSD,$(OSNAME)), BSD)
+ifeq ($(findstring BSD,$(UNAME_S)), BSD)
   PLATFORM = bsd
   SLASH_JAVA = /java
   ARCH = $(shell uname -m)
@@ -63,12 +85,12 @@
   endif
 endif
 ifeq ($(PLATFORM),)
-  # detect wether we're running in MKS or cygwin
-  ifeq ($(OSNAME), Windows_NT) # MKS
+  # detect whether we're running in MKS or cygwin
+  ifeq ($(UNAME_S), Windows_NT) # MKS
     GETMIXEDPATH=dosname -s
   endif
-  ifeq ($(findstring CYGWIN,$(OSNAME)), CYGWIN)
-    GETMIXEDPATH=cygpath -m -s
+  ifeq ($(findstring CYGWIN,$(UNAME_S)), CYGWIN)
+    GETMIXEDPATH=cygpath -m
   endif
   PLATFORM = windows
   SLASH_JAVA = J:
@@ -92,13 +114,6 @@
   SLASH_JAVA = $(ALT_SLASH_JAVA)
 endif
 
-# Utilities used
-CD    = cd
-CP    = cp
-ECHO  = echo
-MKDIR = mkdir
-ZIP   = zip
-
 # Root of this test area (important to use full paths in some places)
 TEST_ROOT := $(shell pwd)
 
@@ -136,21 +151,82 @@
 endif
 
 # How to create the test bundle (pass or fail, we want to create this)
-BUNDLE_UP = ( $(MKDIR) -p `dirname $(ARCHIVE_BUNDLE)`     \
-	      && $(CD) $(ABS_TEST_OUTPUT_DIR)             \
-	      && $(ZIP) -q -r $(ARCHIVE_BUNDLE) . )
-BUNDLE_UP_FAILED = ( exitCode=$$? && $(BUNDLE_UP) && exit $${exitCode} )
+#   Follow command with ";$(BUNDLE_UP_AND_EXIT)", so it always gets executed.
+ZIP_UP_RESULTS = ( $(MKDIR) -p `$(DIRNAME) $(ARCHIVE_BUNDLE)`     \
+	           && $(CD) $(ABS_TEST_OUTPUT_DIR)             \
+	           && $(CHMOD) -R a+r . \
+	           && $(ZIP) -q -r $(ARCHIVE_BUNDLE) . )
+
+# important results files
+SUMMARY_TXT = $(shell $(GETMIXEDPATH) "$(ABS_TEST_OUTPUT_DIR)/JTreport/text/summary.txt")
+STATS_TXT_NAME = Stats.txt
+STATS_TXT = $(shell $(GETMIXEDPATH) "$(ABS_TEST_OUTPUT_DIR)/$(STATS_TXT_NAME)")
+RUNLIST   = $(shell $(GETMIXEDPATH) "$(ABS_TEST_OUTPUT_DIR)/runlist.txt")
+PASSLIST  = $(shell $(GETMIXEDPATH) "$(ABS_TEST_OUTPUT_DIR)/passlist.txt")
+FAILLIST  = $(shell $(GETMIXEDPATH) "$(ABS_TEST_OUTPUT_DIR)/faillist.txt")
+EXITCODE  = $(shell $(GETMIXEDPATH) "$(ABS_TEST_OUTPUT_DIR)/exitcode.txt")
+
+TESTEXIT = \
+  if [ ! -s $(EXITCODE) ] ; then \
+    $(ECHO) "ERROR: EXITCODE file not filled in."; \
+    $(ECHO) "1" > $(EXITCODE); \
+  fi ; \
+  testExitCode=`$(CAT) $(EXITCODE)`; \
+  $(ECHO) "EXIT CODE: $${testExitCode}"; \
+  exit $${testExitCode}
+
+BUNDLE_UP_AND_EXIT = \
+( \
+  jtregExitCode=$$? && \
+  _summary="$(SUMMARY_TXT)"; \
+  $(RM) -f $(STATS_TXT) $(RUNLIST) $(PASSLIST) $(FAILLIST) $(EXITCODE); \
+  $(ECHO) "$${jtregExitCode}" > $(EXITCODE); \
+  if [ -r "$${_summary}" ] ; then \
+    $(ECHO) "Summary: $(UNIQUE_DIR)" > $(STATS_TXT); \
+    $(EXPAND) $${_summary} | $(EGREP) -v ' Not run\.' > $(RUNLIST); \
+    $(EGREP) ' Passed\.' $(RUNLIST) \
+      | $(EGREP) -v ' Error\.' \
+      | $(EGREP) -v ' Failed\.' > $(PASSLIST); \
+    ( $(EGREP) ' Failed\.' $(RUNLIST); \
+      $(EGREP) ' Error\.' $(RUNLIST); \
+      $(EGREP) -v ' Passed\.' $(RUNLIST) ) \
+      | $(SORT) | $(UNIQ) > $(FAILLIST); \
+    if [ $${jtregExitCode} != 0 -o -s $(FAILLIST) ] ; then \
+      $(EXPAND) $(FAILLIST) \
+        | $(CUT) -d' ' -f1 \
+        | $(SED) -e 's@^@FAILED: @' >> $(STATS_TXT); \
+      if [ $${jtregExitCode} = 0 ] ; then \
+        jtregExitCode=1; \
+      fi; \
+    fi; \
+    runc="`$(CAT) $(RUNLIST)      | $(WC) -l | $(AWK) '{print $$1;}'`"; \
+    passc="`$(CAT) $(PASSLIST)    | $(WC) -l | $(AWK) '{print $$1;}'`"; \
+    failc="`$(CAT) $(FAILLIST)    | $(WC) -l | $(AWK) '{print $$1;}'`"; \
+    exclc="FIXME CODETOOLS-7900176"; \
+    $(ECHO) "TEST STATS: name=$(UNIQUE_DIR)  run=$${runc}  pass=$${passc}  fail=$${failc}" \
+      >> $(STATS_TXT); \
+  else \
+    $(ECHO) "Missing file: $${_summary}" >> $(STATS_TXT); \
+  fi; \
+  if [ -f $(STATS_TXT) ] ; then \
+    $(CAT) $(STATS_TXT); \
+  fi; \
+  $(ZIP_UP_RESULTS) ; \
+  $(TESTEXIT) \
+)
 
 ################################################################
 
 # Default make rule (runs jtreg_tests)
-all: jtreg_tests
+all: hotspot_all
 	@$(ECHO) "Testing completed successfully"
 
-# Support "hotspot_" prefixed test make targets too
-# The hotspot_% targets are for example invoked by the top level Makefile
+# Support "hotspot_" prefixed test make targets (too)
+# The hotspot_% targets are used by the top level Makefile
+# Unless explicitly defined below, hotspot_<x> is interpreted as a jtreg test group name
 hotspot_%:
-	$(MAKE) $*
+	$(ECHO) "Running tests: $@"
+	$(MAKE) -j 1 TEST_SELECTION=":$@" UNIQUE_DIR=$@ jtreg_tests;
 
 # Prep for output
 prep: clean
@@ -168,41 +244,64 @@
 
 # Expect JT_HOME to be set for jtreg tests. (home for jtreg)
 ifndef JT_HOME
-  JT_HOME = $(SLASH_JAVA)/re/jtreg/4.0/promoted/latest/binaries/jtreg
-endif
-ifdef JPRT_JTREG_HOME
-  JT_HOME = $(JPRT_JTREG_HOME)
+  JT_HOME = $(SLASH_JAVA)/re/jtreg/4.1/promoted/latest/binaries/jtreg
+  ifdef JPRT_JTREG_HOME
+    JT_HOME = $(JPRT_JTREG_HOME)
+  endif
 endif
 
-# Expect JPRT to set TESTDIRS to the jtreg test dirs
-JTREG_TESTDIRS = demo/jvmti/gctest demo/jvmti/hprof
+# When called from JPRT the TESTDIRS variable is set to the jtreg tests to run
 ifdef TESTDIRS
-  JTREG_TESTDIRS = $(TESTDIRS)
+  TEST_SELECTION = $(TESTDIRS)
+endif
+
+ifdef CONCURRENCY
+  EXTRA_JTREG_OPTIONS += -concurrency:$(CONCURRENCY)
 endif
 
 # Default JTREG to run
 JTREG = $(JT_HOME)/bin/jtreg
 
+# Only run automatic tests
+JTREG_BASIC_OPTIONS += -a
+# Report details on all failed or error tests, times too
+JTREG_BASIC_OPTIONS += -v:fail,error,time
+# Retain all files for failing tests
+JTREG_BASIC_OPTIONS += -retain:fail,error
+# Ignore tests are not run and completely silent about it
+JTREG_IGNORE_OPTION = -ignore:quiet
+JTREG_BASIC_OPTIONS += $(JTREG_IGNORE_OPTION)
+# Add any extra options
+JTREG_BASIC_OPTIONS += $(EXTRA_JTREG_OPTIONS)
+# Set other vm and test options
+JTREG_TEST_OPTIONS = $(JAVA_ARGS:%=-javaoptions:%) $(JAVA_OPTIONS:%=-vmoption:%) $(JAVA_VM_ARGS:%=-vmoption:%)
+
 # Option to tell jtreg to not run tests marked with "ignore"
 ifeq ($(PLATFORM), windows)
   JTREG_KEY_OPTION = -k:!ignore
 else
   JTREG_KEY_OPTION = -k:\!ignore
 endif
-
-#EXTRA_JTREG_OPTIONS =
+JTREG_BASIC_OPTIONS += $(JTREG_KEY_OPTION)
+ 
+# Make sure jtreg exists
+$(JTREG): $(JT_HOME)
 
-jtreg_tests: prep $(JT_HOME) $(PRODUCT_HOME) $(JTREG)
-	$(JTREG) -a -v:fail,error               \
-          $(JTREG_KEY_OPTION)                   \
-          $(EXTRA_JTREG_OPTIONS)                \
-          -r:$(shell $(GETMIXEDPATH) "$(ABS_TEST_OUTPUT_DIR)")/JTreport    \
-          -w:$(shell $(GETMIXEDPATH) "$(ABS_TEST_OUTPUT_DIR)")/JTwork      \
-          -jdk:$(shell $(GETMIXEDPATH) "$(PRODUCT_HOME)")                  \
-          $(JAVA_OPTIONS:%=-vmoption:%)         \
-          $(JTREG_TESTDIRS)                     \
-	  || $(BUNDLE_UP_FAILED)
-	$(BUNDLE_UP)
+jtreg_tests: prep $(PRODUCT_HOME) $(JTREG)
+	(                                                                    \
+	  ( JT_HOME=$(shell $(GETMIXEDPATH) "$(JT_HOME)");                   \
+            export JT_HOME;                                                  \
+            $(shell $(GETMIXEDPATH) "$(JTREG)")                              \
+              $(JTREG_BASIC_OPTIONS)                                         \
+              -r:$(shell $(GETMIXEDPATH) "$(ABS_TEST_OUTPUT_DIR)/JTreport")  \
+              -w:$(shell $(GETMIXEDPATH) "$(ABS_TEST_OUTPUT_DIR)/JTwork")    \
+              -jdk:$(shell $(GETMIXEDPATH) "$(PRODUCT_HOME)")                \
+              $(JTREG_EXCLUSIONS)                                            \
+              $(JTREG_TEST_OPTIONS)                                          \
+              $(TEST_SELECTION)                                              \
+	  ) ;                                                                \
+	  $(BUNDLE_UP_AND_EXIT)                                              \
+	) 2>&1 | $(TEE) $(ABS_TEST_OUTPUT_DIR)/output.txt ; $(TESTEXIT)
 
 PHONY_LIST += jtreg_tests
 
@@ -210,7 +309,7 @@
 
 # clienttest (make sure various basic java client options work)
 
-clienttest: prep $(PRODUCT_HOME)
+hotspot_clienttest clienttest: prep $(PRODUCT_HOME)
 	$(PRODUCT_HOME)/bin/java $(JAVA_OPTIONS) -version
 	$(PRODUCT_HOME)/bin/java $(JAVA_OPTIONS) -help
 	$(PRODUCT_HOME)/bin/java $(JAVA_OPTIONS) -X
@@ -218,73 +317,38 @@
 	$(RM) $(PRODUCT_HOME)/jre/bin/client/classes.jsa
 	$(PRODUCT_HOME)/bin/java $(JAVA_OPTIONS) -Xshare:dump
 
-PHONY_LIST += clienttest
+PHONY_LIST += hotspot_clienttest clienttest
+
+################################################################
+
+# minimaltest (make sure various basic java minimal options work)
+
+hotspot_minimaltest minimaltest: prep $(PRODUCT_HOME)
+	$(PRODUCT_HOME)/bin/java $(JAVA_OPTIONS) -version
+	$(PRODUCT_HOME)/bin/java $(JAVA_OPTIONS) -help
+	$(PRODUCT_HOME)/bin/java $(JAVA_OPTIONS) -X
+
+PHONY_LIST += hotspot_minimaltest minimaltest
 
 ################################################################
 
 # servertest (make sure various basic java server options work)
 
-servertest: prep $(PRODUCT_HOME)
+hotspot_servertest servertest: prep $(PRODUCT_HOME)
 	$(PRODUCT_HOME)/bin/java $(JAVA_OPTIONS) -version
 	$(PRODUCT_HOME)/bin/java $(JAVA_OPTIONS) -help
 	$(PRODUCT_HOME)/bin/java $(JAVA_OPTIONS) -X
 
-PHONY_LIST += servertest
+PHONY_LIST += hotspot_servertest servertest
 
 ################################################################
 
 # internalvmtests (run internal unit tests inside the VM)
 
-internalvmtests: prep $(PRODUCT_HOME)
+hotspot_internalvmtests internalvmtests: prep $(PRODUCT_HOME)
 	$(PRODUCT_HOME)/bin/java $(JAVA_OPTIONS) -XX:+ExecuteInternalVMTests -version
 
-PHONY_LIST += internalvmtests
-
-################################################################
-
-# wbapitest (make sure the whitebox testing api classes work
-
-wbapitest: prep $(JT_HOME) $(PRODUCT_HOME) $(JTREG)
-	$(JTREG) -a -v:fail,error               \
-          $(JTREG_KEY_OPTION)                   \
-          $(EXTRA_JTREG_OPTIONS)                \
-          -r:$(shell $(GETMIXEDPATH) "$(ABS_TEST_OUTPUT_DIR)")/JTreport    \
-          -w:$(shell $(GETMIXEDPATH) "$(ABS_TEST_OUTPUT_DIR)")/JTwork      \
-          -jdk:$(shell $(GETMIXEDPATH) "$(PRODUCT_HOME)")                  \
-          $(JAVA_OPTIONS:%=-vmoption:%)         \
-          $(shell $(GETMIXEDPATH) "$(TEST_ROOT)")/sanity                   \
-	  || $(BUNDLE_UP_FAILED)
-	$(BUNDLE_UP)
-
-PHONY_LIST += wbapitest
-
-################################################################
-
-# packtest
-
-# Expect JPRT to set JPRT_PACKTEST_HOME.
-PACKTEST_HOME = /net/jprt-web.sfbay.sun.com/jprt/allproducts/packtest
-ifdef JPRT_PACKTEST_HOME
-  PACKTEST_HOME = $(JPRT_PACKTEST_HOME)
-endif
-
-#EXTRA_PACKTEST_OPTIONS =
-
-packtest: prep $(PACKTEST_HOME)/ptest $(PRODUCT_HOME)
-	( $(CD) $(PACKTEST_HOME) &&            \
-	    $(PACKTEST_HOME)/ptest             \
-		 -t "$(PRODUCT_HOME)"          \
-	         $(PACKTEST_STRESS_OPTION)     \
-		 $(EXTRA_PACKTEST_OPTIONS)     \
-		 -W $(ABS_TEST_OUTPUT_DIR)     \
-                 $(JAVA_OPTIONS:%=-J %)        \
-	 ) || $(BUNDLE_UP_FAILED)
-	$(BUNDLE_UP)
-
-packtest_stress: PACKTEST_STRESS_OPTION=-s
-packtest_stress: packtest
-
-PHONY_LIST += packtest packtest_stress
+PHONY_LIST += hotspot_internalvmtests internalvmtests
 
 ################################################################
 
@@ -292,4 +356,3 @@
 .PHONY: all clean prep $(PHONY_LIST)
 
 ################################################################
-
diff -r 8538a606a105 -r 8b9ec2da541a test/TEST.groups
--- a/test/TEST.groups	Wed Oct 22 11:18:17 2014 -0700
+++ b/test/TEST.groups	Thu Oct 23 15:32:07 2014 -0700
@@ -125,6 +125,27 @@
  -:needs_jdk
 
 
+# When called from top level the test suites use the hotspot_ prefix
+hotspot_wbapitest = \
+  sanity/
+
+hotspot_compiler = \
+  sanity/ExecuteInternalVMTests.java
+
+hotspot_gc = \
+  sanity/ExecuteInternalVMTests.java
+
+hotspot_runtime = \
+  sanity/ExecuteInternalVMTests.java
+
+hotspot_serviceability = \
+  sanity/ExecuteInternalVMTests.java
+
+hotspot_all = \
+  :hotspot_compiler \
+  :hotspot_gc \
+  :hotspot_runtime \
+  :hotspot_serviceability
 # Tests that require compact3 API's
 #
 needs_compact3 = \
diff -r 8538a606a105 -r 8b9ec2da541a test/compiler/exceptions/CatchInlineExceptions.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/compiler/exceptions/CatchInlineExceptions.java	Thu Oct 23 15:32:07 2014 -0700
@@ -0,0 +1,81 @@
+/*
+ * 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 8059299
+ * @summary assert(adr_type != NULL) failed: expecting TypeKlassPtr
+ * @run main/othervm -Xbatch CatchInlineExceptions
+ */
+
+class Exception1 extends Exception {};
+class Exception2 extends Exception {};
+
+public class CatchInlineExceptions {
+    private static int counter0;
+    private static int counter1;
+    private static int counter2;
+    private static int counter;
+
+    static void foo(int i) throws Exception {
+        if ((i & 1023) == 2) {
+            counter0++;
+            throw new Exception2();
+        }
+    }
+
+    static void test(int i) throws Exception {
+        try {
+           foo(i);
+        }
+        catch (Exception e) {
+            if (e instanceof Exception1) {
+                counter1++;
+            } else if (e instanceof Exception2) {
+                counter2++;
+            }
+            counter++;
+            throw e;
+        }
+    }
+
+    public static void main(String[] args) throws Throwable {
+        for (int i = 0; i < 15000; i++) {
+            try {
+                test(i);
+            } catch (Exception e) {
+                // expected
+            }
+        }
+        if (counter1 != 0) {
+            throw new RuntimeException("Failed: counter1(" + counter1  + ") != 0");
+        }
+        if (counter2 != counter0) {
+            throw new RuntimeException("Failed: counter2(" + counter2  + ") != counter0(" + counter0  + ")");
+        }
+        if (counter2 != counter) {
+            throw new RuntimeException("Failed: counter2(" + counter2  + ") != counter(" + counter  + ")");
+        }
+        System.out.println("TEST PASSED");
+    }
+}
diff -r 8538a606a105 -r 8b9ec2da541a test/runtime/NMT/ChangeTrackingLevel.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/NMT/ChangeTrackingLevel.java	Thu Oct 23 15:32:07 2014 -0700
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2013, 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 8059100
+ * @summary Test that you can decrease NMT tracking level but not increase it.
+ * @key nmt
+ * @library /testlibrary /testlibrary/whitebox
+ * @build ChangeTrackingLevel
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ *                              sun.hotspot.WhiteBox$WhiteBoxPermission
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail ChangeTrackingLevel
+ */
+
+import com.oracle.java.testlibrary.*;
+import sun.hotspot.WhiteBox;
+
+public class ChangeTrackingLevel {
+
+    public static WhiteBox wb = WhiteBox.getWhiteBox();
+    public static void main(String args[]) throws Exception {
+        boolean testChangeLevel = wb.NMTChangeTrackingLevel();
+        if (testChangeLevel) {
+            System.out.println("NMT level change test passed.");
+        } else {
+            // it also fails if the VM asserts.
+            throw new RuntimeException("NMT level change test failed");
+        }
+    }
+};
diff -r 8538a606a105 -r 8b9ec2da541a test/testlibrary/whitebox/sun/hotspot/WhiteBox.java
--- a/test/testlibrary/whitebox/sun/hotspot/WhiteBox.java	Wed Oct 22 11:18:17 2014 -0700
+++ b/test/testlibrary/whitebox/sun/hotspot/WhiteBox.java	Thu Oct 23 15:32:07 2014 -0700
@@ -101,6 +101,7 @@
   public native void NMTOverflowHashBucket(long num);
   public native long NMTMallocWithPseudoStack(long size, int index);
   public native boolean NMTIsDetailSupported();
+  public native boolean NMTChangeTrackingLevel();
 
   // Compiler
   public native void    deoptimizeAll();