changeset 46490:d530e842c512

Merge
author coleenp
date Tue, 23 May 2017 18:42:08 +0000
parents 40abcea5a9d5 01c282163d38
children e43953993af3
files hotspot/make/templates/gpl-cp-header hotspot/make/templates/gpl-header
diffstat 37 files changed, 129 insertions(+), 113 deletions(-) [+]
line wrap: on
line diff
--- a/hotspot/.hgtags	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/.hgtags	Tue May 23 18:42:08 2017 +0000
@@ -579,3 +579,4 @@
 1ca7ed1b17b5776930d641d1379834f3140a74e4 jdk-9+167
 fbb9c802649585d19f6d7e81b4a519d44806225a jdk-9+168
 16d692be099c5c38eb48cc9aca78b0c900910d5b jdk-9+169
+38a240fd58a287acb1963920b92ed4d9c2fd39e3 jdk-9+170
--- a/hotspot/make/templates/gpl-cp-header	Tue May 23 11:58:32 2017 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,22 +0,0 @@
-Copyright (c) %YEARS%, 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.  Oracle designates this
-particular file as subject to the "Classpath" exception as provided
-by Oracle in the LICENSE file that accompanied this code.
-
-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.
--- a/hotspot/make/templates/gpl-header	Tue May 23 11:58:32 2017 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,20 +0,0 @@
-Copyright (c) %YEARS%, 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.
--- a/hotspot/src/share/vm/classfile/stringTable.cpp	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/src/share/vm/classfile/stringTable.cpp	Tue May 23 18:42:08 2017 +0000
@@ -315,7 +315,11 @@
 }
 
 void StringTable::unlink_or_oops_do(BoolObjectClosure* is_alive, OopClosure* f, int* processed, int* removed) {
-  buckets_unlink_or_oops_do(is_alive, f, 0, the_table()->table_size(), processed, removed);
+  BucketUnlinkContext context;
+  buckets_unlink_or_oops_do(is_alive, f, 0, the_table()->table_size(), &context);
+  _the_table->bulk_free_entries(&context);
+  *processed = context._num_processed;
+  *removed = context._num_removed;
 }
 
 void StringTable::possibly_parallel_unlink_or_oops_do(BoolObjectClosure* is_alive, OopClosure* f, int* processed, int* removed) {
@@ -324,6 +328,7 @@
   assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
   const int limit = the_table()->table_size();
 
+  BucketUnlinkContext context;
   for (;;) {
     // Grab next set of buckets to scan
     int start_idx = Atomic::add(ClaimChunkSize, &_parallel_claimed_idx) - ClaimChunkSize;
@@ -333,8 +338,11 @@
     }
 
     int end_idx = MIN2(limit, start_idx + ClaimChunkSize);
-    buckets_unlink_or_oops_do(is_alive, f, start_idx, end_idx, processed, removed);
+    buckets_unlink_or_oops_do(is_alive, f, start_idx, end_idx, &context);
   }
+  _the_table->bulk_free_entries(&context);
+  *processed = context._num_processed;
+  *removed = context._num_removed;
 }
 
 void StringTable::buckets_oops_do(OopClosure* f, int start_idx, int end_idx) {
@@ -360,7 +368,7 @@
   }
 }
 
-void StringTable::buckets_unlink_or_oops_do(BoolObjectClosure* is_alive, OopClosure* f, int start_idx, int end_idx, int* processed, int* removed) {
+void StringTable::buckets_unlink_or_oops_do(BoolObjectClosure* is_alive, OopClosure* f, int start_idx, int end_idx, BucketUnlinkContext* context) {
   const int limit = the_table()->table_size();
 
   assert(0 <= start_idx && start_idx <= limit,
@@ -384,10 +392,9 @@
         p = entry->next_addr();
       } else {
         *p = entry->next();
-        the_table()->free_entry(entry);
-        (*removed)++;
+        context->free_entry(entry);
       }
-      (*processed)++;
+      context->_num_processed++;
       entry = *p;
     }
   }
--- a/hotspot/src/share/vm/classfile/stringTable.hpp	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/src/share/vm/classfile/stringTable.hpp	Tue May 23 18:42:08 2017 +0000
@@ -61,9 +61,13 @@
   // Apply the give oop closure to the entries to the buckets
   // in the range [start_idx, end_idx).
   static void buckets_oops_do(OopClosure* f, int start_idx, int end_idx);
+
+  typedef StringTable::BucketUnlinkContext BucketUnlinkContext;
   // Unlink or apply the give oop closure to the entries to the buckets
-  // in the range [start_idx, end_idx).
-  static void buckets_unlink_or_oops_do(BoolObjectClosure* is_alive, OopClosure* f, int start_idx, int end_idx, int* processed, int* removed);
+  // in the range [start_idx, end_idx). Unlinked bucket entries are collected in the given
+  // context to be freed later.
+  // This allows multiple threads to work on the table at once.
+  static void buckets_unlink_or_oops_do(BoolObjectClosure* is_alive, OopClosure* f, int start_idx, int end_idx, BucketUnlinkContext* context);
 
   // Hashing algorithm, used as the hash value used by the
   //     StringTable for bucket selection and comparison (stored in the
--- a/hotspot/src/share/vm/classfile/symbolTable.cpp	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/src/share/vm/classfile/symbolTable.cpp	Tue May 23 18:42:08 2017 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2017, 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
@@ -98,7 +98,7 @@
 int SymbolTable::_symbols_counted = 0;
 volatile int SymbolTable::_parallel_claimed_idx = 0;
 
-void SymbolTable::buckets_unlink(int start_idx, int end_idx, int* processed, int* removed) {
+void SymbolTable::buckets_unlink(int start_idx, int end_idx, BucketUnlinkContext* context) {
   for (int i = start_idx; i < end_idx; ++i) {
     HashtableEntry<Symbol*, mtSymbol>** p = the_table()->bucket_addr(i);
     HashtableEntry<Symbol*, mtSymbol>* entry = the_table()->bucket(i);
@@ -111,15 +111,14 @@
         break;
       }
       Symbol* s = entry->literal();
-      (*processed)++;
+      context->_num_processed++;
       assert(s != NULL, "just checking");
       // If reference count is zero, remove.
       if (s->refcount() == 0) {
         assert(!entry->is_shared(), "shared entries should be kept live");
         delete s;
-        (*removed)++;
         *p = entry->next();
-        the_table()->free_entry(entry);
+        context->free_entry(entry);
       } else {
         p = entry->next_addr();
       }
@@ -132,17 +131,20 @@
 // Remove unreferenced symbols from the symbol table
 // This is done late during GC.
 void SymbolTable::unlink(int* processed, int* removed) {
-  size_t memory_total = 0;
-  buckets_unlink(0, the_table()->table_size(), processed, removed);
-  _symbols_removed += *removed;
-  _symbols_counted += *processed;
+  BucketUnlinkContext context;
+  buckets_unlink(0, the_table()->table_size(), &context);
+  _the_table->bulk_free_entries(&context);
+  *processed = context._num_processed;
+  *removed = context._num_removed;
+
+  _symbols_removed = context._num_removed;
+  _symbols_counted = context._num_processed;
 }
 
 void SymbolTable::possibly_parallel_unlink(int* processed, int* removed) {
   const int limit = the_table()->table_size();
 
-  size_t memory_total = 0;
-
+  BucketUnlinkContext context;
   for (;;) {
     // Grab next set of buckets to scan
     int start_idx = Atomic::add(ClaimChunkSize, &_parallel_claimed_idx) - ClaimChunkSize;
@@ -152,10 +154,15 @@
     }
 
     int end_idx = MIN2(limit, start_idx + ClaimChunkSize);
-    buckets_unlink(start_idx, end_idx, processed, removed);
+    buckets_unlink(start_idx, end_idx, &context);
   }
-  Atomic::add(*processed, &_symbols_counted);
-  Atomic::add(*removed, &_symbols_removed);
+
+  _the_table->bulk_free_entries(&context);
+  *processed = context._num_processed;
+  *removed = context._num_removed;
+
+  Atomic::add(context._num_processed, &_symbols_counted);
+  Atomic::add(context._num_removed, &_symbols_removed);
 }
 
 // Create a new table and using alternate hash code, populate the new table
--- a/hotspot/src/share/vm/classfile/symbolTable.hpp	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/src/share/vm/classfile/symbolTable.hpp	Tue May 23 18:42:08 2017 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2017, 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
@@ -154,8 +154,11 @@
 
   static volatile int _parallel_claimed_idx;
 
-  // Release any dead symbols
-  static void buckets_unlink(int start_idx, int end_idx, int* processed, int* removed);
+  typedef SymbolTable::BucketUnlinkContext BucketUnlinkContext;
+  // Release any dead symbols. Unlinked bucket entries are collected in the given
+  // context to be freed later.
+  // This allows multiple threads to work on the table at once.
+  static void buckets_unlink(int start_idx, int end_idx, BucketUnlinkContext* context);
 public:
   enum {
     symbol_alloc_batch_size = 8,
--- a/hotspot/src/share/vm/runtime/vmStructs.cpp	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/src/share/vm/runtime/vmStructs.cpp	Tue May 23 18:42:08 2017 +0000
@@ -676,7 +676,7 @@
                                                                                                                                      \
   nonstatic_field(BasicHashtable<mtInternal>,  _table_size,                                   int)                                   \
   nonstatic_field(BasicHashtable<mtInternal>,  _buckets,                                      HashtableBucket<mtInternal>*)          \
-  nonstatic_field(BasicHashtable<mtInternal>,  _free_list,                                    BasicHashtableEntry<mtInternal>*)      \
+  volatile_nonstatic_field(BasicHashtable<mtInternal>,  _free_list,                           BasicHashtableEntry<mtInternal>*)      \
   nonstatic_field(BasicHashtable<mtInternal>,  _first_free_entry,                             char*)                                 \
   nonstatic_field(BasicHashtable<mtInternal>,  _end_block,                                    char*)                                 \
   nonstatic_field(BasicHashtable<mtInternal>,  _entry_size,                                   int)                                   \
--- a/hotspot/src/share/vm/utilities/hashtable.cpp	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/src/share/vm/utilities/hashtable.cpp	Tue May 23 18:42:08 2017 +0000
@@ -159,6 +159,35 @@
   }
 }
 
+template <MEMFLAGS F> void BasicHashtable<F>::BucketUnlinkContext::free_entry(BasicHashtableEntry<F>* entry) {
+  entry->set_next(_removed_head);
+  _removed_head = entry;
+  if (_removed_tail == NULL) {
+    _removed_tail = entry;
+  }
+  _num_removed++;
+}
+
+template <MEMFLAGS F> void BasicHashtable<F>::bulk_free_entries(BucketUnlinkContext* context) {
+  if (context->_num_removed == 0) {
+    assert(context->_removed_head == NULL && context->_removed_tail == NULL,
+           "Zero entries in the unlink context, but elements linked from " PTR_FORMAT " to " PTR_FORMAT,
+           p2i(context->_removed_head), p2i(context->_removed_tail));
+    return;
+  }
+
+  // MT-safe add of the list of BasicHashTableEntrys from the context to the free list.
+  BasicHashtableEntry<F>* current = _free_list;
+  while (true) {
+    context->_removed_tail->set_next(current);
+    BasicHashtableEntry<F>* old = (BasicHashtableEntry<F>*)Atomic::cmpxchg_ptr(context->_removed_head, &_free_list, current);
+    if (old == current) {
+      break;
+    }
+    current = old;
+  }
+  Atomic::add(-context->_num_removed, &_number_of_entries);
+}
 
 // Copy the table to the shared space.
 
@@ -192,7 +221,6 @@
   }
 }
 
-
 template <class T, MEMFLAGS F> int RehashableHashtable<T, F>::literal_size(Symbol *symbol) {
   return symbol->size() * HeapWordSize;
 }
--- a/hotspot/src/share/vm/utilities/hashtable.hpp	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/src/share/vm/utilities/hashtable.hpp	Tue May 23 18:42:08 2017 +0000
@@ -162,11 +162,11 @@
   // Instance variables
   int               _table_size;
   HashtableBucket<F>*     _buckets;
-  BasicHashtableEntry<F>* _free_list;
+  BasicHashtableEntry<F>* volatile _free_list;
   char*             _first_free_entry;
   char*             _end_block;
   int               _entry_size;
-  int               _number_of_entries;
+  volatile int      _number_of_entries;
 
 protected:
 
@@ -211,6 +211,24 @@
   // Free the buckets in this hashtable
   void free_buckets();
 
+  // Helper data structure containing context for the bucket entry unlink process,
+  // storing the unlinked buckets in a linked list.
+  // Also avoids the need to pass around these four members as parameters everywhere.
+  struct BucketUnlinkContext {
+    int _num_processed;
+    int _num_removed;
+    // Head and tail pointers for the linked list of removed entries.
+    BasicHashtableEntry<F>* _removed_head;
+    BasicHashtableEntry<F>* _removed_tail;
+
+    BucketUnlinkContext() : _num_processed(0), _num_removed(0), _removed_head(NULL), _removed_tail(NULL) {
+    }
+
+    void free_entry(BasicHashtableEntry<F>* entry);
+  };
+  // Add of bucket entries linked together in the given context to the global free list. This method
+  // is mt-safe wrt. to other calls of this method.
+  void bulk_free_entries(BucketUnlinkContext* context);
 public:
   int table_size() { return _table_size; }
   void set_entry(int index, BasicHashtableEntry<F>* entry);
--- a/hotspot/test/gc/arguments/TestDynMaxHeapFreeRatio.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/gc/arguments/TestDynMaxHeapFreeRatio.java	Tue May 23 18:42:08 2017 +0000
@@ -24,7 +24,7 @@
 import static jdk.test.lib.Asserts.assertEQ;
 import static jdk.test.lib.Asserts.assertFalse;
 import static jdk.test.lib.Asserts.assertTrue;
-import jdk.test.lib.DynamicVMOption;
+import jdk.test.lib.management.DynamicVMOption;
 
 /**
  * @test TestDynMaxHeapFreeRatio
--- a/hotspot/test/gc/arguments/TestDynMinHeapFreeRatio.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/gc/arguments/TestDynMinHeapFreeRatio.java	Tue May 23 18:42:08 2017 +0000
@@ -38,7 +38,7 @@
 import static jdk.test.lib.Asserts.assertEQ;
 import static jdk.test.lib.Asserts.assertFalse;
 import static jdk.test.lib.Asserts.assertTrue;
-import jdk.test.lib.DynamicVMOption;
+import jdk.test.lib.management.DynamicVMOption;
 
 public class TestDynMinHeapFreeRatio {
 
--- a/hotspot/test/gc/metaspace/TestMetaspacePerfCounters.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/gc/metaspace/TestMetaspacePerfCounters.java	Tue May 23 18:42:08 2017 +0000
@@ -26,7 +26,7 @@
 import java.util.ArrayList;
 
 import jdk.test.lib.ByteCodeLoader;
-import jdk.test.lib.InMemoryJavaCompiler;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 import jdk.test.lib.Platform;
 
 import sun.management.ManagementFactoryHelper;
--- a/hotspot/test/gc/parallel/TestDynShrinkHeap.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/gc/parallel/TestDynShrinkHeap.java	Tue May 23 18:42:08 2017 +0000
@@ -31,7 +31,7 @@
  * @library /test/lib /
  * @run main/othervm -XX:+UseAdaptiveSizePolicyWithSystemGC -XX:+UseParallelGC -XX:MinHeapFreeRatio=0 -XX:MaxHeapFreeRatio=100 -Xmx1g -verbose:gc TestDynShrinkHeap
  */
-import jdk.test.lib.DynamicVMOption;
+import jdk.test.lib.management.DynamicVMOption;
 import java.lang.management.ManagementFactory;
 import java.lang.management.MemoryUsage;
 import java.util.ArrayList;
--- a/hotspot/test/runtime/BadObjectClass/BootstrapRedefine.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/BadObjectClass/BootstrapRedefine.java	Tue May 23 18:42:08 2017 +0000
@@ -31,7 +31,7 @@
  * @run main BootstrapRedefine
  */
 
-import jdk.test.lib.InMemoryJavaCompiler;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 import jdk.test.lib.process.ProcessTools;
 import jdk.test.lib.process.OutputAnalyzer;
 
--- a/hotspot/test/runtime/CommandLine/OptionsValidation/TestJcmdOutput.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/CommandLine/OptionsValidation/TestJcmdOutput.java	Tue May 23 18:42:08 2017 +0000
@@ -34,7 +34,7 @@
  */
 
 import jdk.test.lib.Asserts;
-import jdk.test.lib.DynamicVMOption;
+import jdk.test.lib.management.DynamicVMOption;
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.process.ProcessTools;
 import jdk.test.lib.dcmd.PidJcmdExecutor;
--- a/hotspot/test/runtime/CommandLine/OptionsValidation/common/optionsvalidation/JVMOption.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/CommandLine/OptionsValidation/common/optionsvalidation/JVMOption.java	Tue May 23 18:42:08 2017 +0000
@@ -29,7 +29,7 @@
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
-import jdk.test.lib.DynamicVMOption;
+import jdk.test.lib.management.DynamicVMOption;
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.process.ProcessTools;
 import jdk.test.lib.dcmd.CommandExecutor;
--- a/hotspot/test/runtime/CommandLine/VMOptionsFile/TestVMOptionsFile.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/CommandLine/VMOptionsFile/TestVMOptionsFile.java	Tue May 23 18:42:08 2017 +0000
@@ -51,7 +51,7 @@
 import java.util.Properties;
 import java.util.Set;
 import jdk.test.lib.Asserts;
-import jdk.test.lib.DynamicVMOption;
+import jdk.test.lib.management.DynamicVMOption;
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.process.ProcessTools;
 
--- a/hotspot/test/runtime/RedefineTests/ModifyAnonymous.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/RedefineTests/ModifyAnonymous.java	Tue May 23 18:42:08 2017 +0000
@@ -34,15 +34,14 @@
 
 import java.io.FileNotFoundException;
 import java.io.PrintWriter;
-import java.lang.NoSuchFieldException;
-import java.lang.NoSuchMethodException;
 import java.lang.RuntimeException;
 import java.lang.instrument.ClassDefinition;
 import java.lang.instrument.ClassFileTransformer;
 import java.lang.instrument.IllegalClassFormatException;
 import java.lang.instrument.Instrumentation;
 import java.security.ProtectionDomain;
-import jdk.test.lib.*;
+
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 
 public class ModifyAnonymous {
 
--- a/hotspot/test/runtime/Unsafe/DefineClass.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/Unsafe/DefineClass.java	Tue May 23 18:42:08 2017 +0000
@@ -32,8 +32,8 @@
  */
 
 import java.security.ProtectionDomain;
-import java.io.InputStream;
-import jdk.test.lib.InMemoryJavaCompiler;
+
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
--- a/hotspot/test/runtime/Unsafe/NestedUnsafe.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/Unsafe/NestedUnsafe.java	Tue May 23 18:42:08 2017 +0000
@@ -31,12 +31,9 @@
  * @run main NestedUnsafe
  */
 
-import java.security.ProtectionDomain;
-import java.io.InputStream;
 import java.lang.*;
-import jdk.test.lib.InMemoryJavaCompiler;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 import jdk.internal.misc.Unsafe;
-import static jdk.test.lib.Asserts.*;
 
 // package p;
 
--- a/hotspot/test/runtime/defineAnonClass/NestedUnsafe.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/defineAnonClass/NestedUnsafe.java	Tue May 23 18:42:08 2017 +0000
@@ -34,11 +34,10 @@
 
 package p;
 
-import java.security.ProtectionDomain;
-import java.io.InputStream;
 import java.lang.*;
-import jdk.test.lib.*;
+
 import jdk.internal.misc.Unsafe;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 
 
 // Test that an anonymous class in package 'p' cannot define its own anonymous class
--- a/hotspot/test/runtime/defineAnonClass/NestedUnsafe2.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/defineAnonClass/NestedUnsafe2.java	Tue May 23 18:42:08 2017 +0000
@@ -34,11 +34,10 @@
 
 package p;
 
-import java.security.ProtectionDomain;
-import java.io.InputStream;
 import java.lang.*;
-import jdk.test.lib.*;
+
 import jdk.internal.misc.Unsafe;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 
 
 // Test that an anonymous class that gets put in its host's package cannot define
--- a/hotspot/test/runtime/getSysPackage/GetSysPkgTest.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/getSysPackage/GetSysPkgTest.java	Tue May 23 18:42:08 2017 +0000
@@ -33,7 +33,7 @@
 import java.io.File;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
-import jdk.test.lib.InMemoryJavaCompiler;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 import jdk.test.lib.process.ProcessTools;
 import jdk.test.lib.process.OutputAnalyzer;
 
--- a/hotspot/test/runtime/modules/ModuleStress/ModuleStress.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/modules/ModuleStress/ModuleStress.java	Tue May 23 18:42:08 2017 +0000
@@ -38,8 +38,7 @@
 
 import jdk.test.lib.process.ProcessTools;
 import jdk.test.lib.process.OutputAnalyzer;
-import jdk.test.lib.InMemoryJavaCompiler;
-import java.io.File;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 
 public class ModuleStress {
 
--- a/hotspot/test/runtime/modules/PatchModule/PatchModule2Dirs.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/modules/PatchModule/PatchModule2Dirs.java	Tue May 23 18:42:08 2017 +0000
@@ -30,10 +30,9 @@
  * @run main PatchModule2Dirs
  */
 
-import jdk.test.lib.InMemoryJavaCompiler;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.process.ProcessTools;
-import java.io.File;
 
 public class PatchModule2Dirs {
 
--- a/hotspot/test/runtime/modules/PatchModule/PatchModuleCDS.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/modules/PatchModule/PatchModuleCDS.java	Tue May 23 18:42:08 2017 +0000
@@ -31,8 +31,7 @@
  * @run main PatchModuleCDS
  */
 
-import java.io.File;
-import jdk.test.lib.InMemoryJavaCompiler;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.process.ProcessTools;
 
--- a/hotspot/test/runtime/modules/PatchModule/PatchModuleClassList.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/modules/PatchModule/PatchModuleClassList.java	Tue May 23 18:42:08 2017 +0000
@@ -33,7 +33,7 @@
 
 import java.nio.file.Files;
 import java.nio.file.Paths;
-import jdk.test.lib.InMemoryJavaCompiler;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.process.ProcessTools;
 
--- a/hotspot/test/runtime/modules/PatchModule/PatchModuleJavaBase.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/modules/PatchModule/PatchModuleJavaBase.java	Tue May 23 18:42:08 2017 +0000
@@ -31,7 +31,7 @@
  * @run main PatchModuleJavaBase
  */
 
-import jdk.test.lib.InMemoryJavaCompiler;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.process.ProcessTools;
 
--- a/hotspot/test/runtime/modules/PatchModule/PatchModuleTest.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/modules/PatchModule/PatchModuleTest.java	Tue May 23 18:42:08 2017 +0000
@@ -31,7 +31,7 @@
  * @run main PatchModuleTest
  */
 
-import jdk.test.lib.InMemoryJavaCompiler;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.process.ProcessTools;
 
--- a/hotspot/test/runtime/modules/PatchModule/PatchModuleTestJar.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/modules/PatchModule/PatchModuleTestJar.java	Tue May 23 18:42:08 2017 +0000
@@ -31,7 +31,7 @@
  * @run main PatchModuleTestJar
  */
 
-import jdk.test.lib.InMemoryJavaCompiler;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.process.ProcessTools;
 
--- a/hotspot/test/runtime/modules/PatchModule/PatchModuleTestJarDir.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/modules/PatchModule/PatchModuleTestJarDir.java	Tue May 23 18:42:08 2017 +0000
@@ -32,8 +32,8 @@
  */
 
 import java.io.File;
-import java.nio.file.Files;
-import jdk.test.lib.InMemoryJavaCompiler;
+
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.process.ProcessTools;
 
--- a/hotspot/test/runtime/modules/PatchModule/PatchModuleTraceCL.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/modules/PatchModule/PatchModuleTraceCL.java	Tue May 23 18:42:08 2017 +0000
@@ -32,8 +32,7 @@
  * @run main PatchModuleTraceCL
  */
 
-import java.io.File;
-import jdk.test.lib.InMemoryJavaCompiler;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.process.ProcessTools;
 
--- a/hotspot/test/runtime/modules/Visibility/PatchModuleVisibility.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/modules/Visibility/PatchModuleVisibility.java	Tue May 23 18:42:08 2017 +0000
@@ -36,7 +36,7 @@
 import java.nio.file.Files;
 import java.nio.file.Paths;
 
-import jdk.test.lib.InMemoryJavaCompiler;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.process.ProcessTools;
 
--- a/hotspot/test/runtime/modules/Visibility/XbootcpNoVisibility.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/modules/Visibility/XbootcpNoVisibility.java	Tue May 23 18:42:08 2017 +0000
@@ -31,7 +31,7 @@
  * @run main/othervm XbootcpNoVisibility
  */
 
-import jdk.test.lib.InMemoryJavaCompiler;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 import jdk.test.lib.process.ProcessTools;
 import jdk.test.lib.process.OutputAnalyzer;
 
--- a/hotspot/test/runtime/modules/Visibility/XbootcpVisibility.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/modules/Visibility/XbootcpVisibility.java	Tue May 23 18:42:08 2017 +0000
@@ -36,7 +36,7 @@
 import java.nio.file.Files;
 import java.nio.file.Paths;
 
-import jdk.test.lib.InMemoryJavaCompiler;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.process.ProcessTools;
 
--- a/hotspot/test/runtime/noClassDefFoundMsg/NoClassDefFoundMsg.java	Tue May 23 11:58:32 2017 -0400
+++ b/hotspot/test/runtime/noClassDefFoundMsg/NoClassDefFoundMsg.java	Tue May 23 18:42:08 2017 +0000
@@ -31,7 +31,7 @@
  * @run main/native NoClassDefFoundMsg
  */
 
-import jdk.test.lib.InMemoryJavaCompiler;
+import jdk.test.lib.compiler.InMemoryJavaCompiler;
 import jdk.internal.misc.Unsafe;
 
 public class NoClassDefFoundMsg {