--- a/hotspot/src/share/vm/gc/g1/satbQueue.hpp Fri Nov 20 15:41:49 2015 -0800
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,123 +0,0 @@
-/*
- * Copyright (c) 2001, 2015, 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.
- *
- */
-
-#ifndef SHARE_VM_GC_G1_SATBQUEUE_HPP
-#define SHARE_VM_GC_G1_SATBQUEUE_HPP
-
-#include "gc/g1/ptrQueue.hpp"
-#include "memory/allocation.hpp"
-
-class JavaThread;
-class SATBMarkQueueSet;
-
-// Base class for processing the contents of a SATB buffer.
-class SATBBufferClosure : public StackObj {
-protected:
- ~SATBBufferClosure() { }
-
-public:
- // Process the SATB entries in the designated buffer range.
- virtual void do_buffer(void** buffer, size_t size) = 0;
-};
-
-// A ptrQueue whose elements are "oops", pointers to object heads.
-class ObjPtrQueue: public PtrQueue {
- friend class SATBMarkQueueSet;
-
-private:
- // Filter out unwanted entries from the buffer.
- void filter();
-
-public:
- ObjPtrQueue(PtrQueueSet* qset, bool perm = false) :
- // SATB queues are only active during marking cycles. We create
- // them with their active field set to false. If a thread is
- // created during a cycle and its SATB queue needs to be activated
- // before the thread starts running, we'll need to set its active
- // field to true. This is done in JavaThread::initialize_queues().
- PtrQueue(qset, perm, false /* active */) { }
-
- // Process queue entries and free resources.
- void flush();
-
- // Apply cl to the active part of the buffer.
- // Prerequisite: Must be at a safepoint.
- void apply_closure_and_empty(SATBBufferClosure* cl);
-
- // Overrides PtrQueue::should_enqueue_buffer(). See the method's
- // definition for more information.
- virtual bool should_enqueue_buffer();
-
-#ifndef PRODUCT
- // Helpful for debugging
- void print(const char* name);
- static void print(const char* name, void** buf, size_t index, size_t sz);
-#endif // PRODUCT
-};
-
-class SATBMarkQueueSet: public PtrQueueSet {
- ObjPtrQueue _shared_satb_queue;
-
-#ifdef ASSERT
- void dump_active_states(bool expected_active);
- void verify_active_states(bool expected_active);
-#endif // ASSERT
-
-public:
- SATBMarkQueueSet();
-
- void initialize(Monitor* cbl_mon, Mutex* fl_lock,
- int process_completed_threshold,
- Mutex* lock);
-
- static void handle_zero_index_for_thread(JavaThread* t);
-
- // Apply "set_active(active)" to all SATB queues in the set. It should be
- // called only with the world stopped. The method will assert that the
- // SATB queues of all threads it visits, as well as the SATB queue
- // set itself, has an active value same as expected_active.
- void set_active_all_threads(bool active, bool expected_active);
-
- // Filter all the currently-active SATB buffers.
- void filter_thread_buffers();
-
- // If there exists some completed buffer, pop and process it, and
- // return true. Otherwise return false. Processing a buffer
- // consists of applying the closure to the buffer range starting
- // with the first non-NULL entry to the end of the buffer; the
- // leading entries may be NULL due to filtering.
- bool apply_closure_to_completed_buffer(SATBBufferClosure* cl);
-
-#ifndef PRODUCT
- // Helpful for debugging
- void print_all(const char* msg);
-#endif // PRODUCT
-
- ObjPtrQueue* shared_satb_queue() { return &_shared_satb_queue; }
-
- // If a marking is being abandoned, reset any unprocessed log buffers.
- void abandon_partial_marking();
-};
-
-#endif // SHARE_VM_GC_G1_SATBQUEUE_HPP