jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.cpp@8a5ea0a9ccc4 (annotated)

src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.cpp@8a5ea0a9ccc4 (annotated)

src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.cpp

Sat, 06 Oct 2012 01:17:44 -0700

author: johnc
date: Sat, 06 Oct 2012 01:17:44 -0700
changeset 4173: 8a5ea0a9ccc4
parent 3156: f08d439fab8c
child 4299: f34d701e952e
permissions: -rw-r--r--

7127708: G1: change task num types from int to uint in concurrent mark
Summary: Change the type of various task num fields, parameters etc to unsigned and rename them to be more consistent with the other collectors. Code changes were also reviewed by Vitaly Davidovich.
Reviewed-by: johnc
Contributed-by: Kaushik Srenevasan <kaushik@twitter.com>

 /*
  * Copyright (c) 2001, 2011, 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
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 #include "precompiled.hpp"
 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
 #include "gc_implementation/g1/heapRegion.hpp"
 #include "gc_implementation/g1/satbQueue.hpp"
 #include "runtime/mutexLocker.hpp"
 #include "runtime/thread.hpp"
 #ifdef TARGET_OS_FAMILY_linux
 # include "thread_linux.inline.hpp"
 #endif
 #ifdef TARGET_OS_FAMILY_solaris
 # include "thread_solaris.inline.hpp"
 #endif
 #ifdef TARGET_OS_FAMILY_windows
 # include "thread_windows.inline.hpp"
 #endif
 #ifdef TARGET_OS_FAMILY_bsd
 # include "thread_bsd.inline.hpp"
 #endif
 G1SATBCardTableModRefBS::G1SATBCardTableModRefBS(MemRegion whole_heap,
                                                  int max_covered_regions) :
     CardTableModRefBSForCTRS(whole_heap, max_covered_regions)
 {
   _kind = G1SATBCT;
 }
 void G1SATBCardTableModRefBS::enqueue(oop pre_val) {
   // Nulls should have been already filtered.
   assert(pre_val->is_oop(true), "Error");
   if (!JavaThread::satb_mark_queue_set().is_active()) return;
   Thread* thr = Thread::current();
   if (thr->is_Java_thread()) {
     JavaThread* jt = (JavaThread*)thr;
     jt->satb_mark_queue().enqueue(pre_val);
   } else {
     MutexLocker x(Shared_SATB_Q_lock);
     JavaThread::satb_mark_queue_set().shared_satb_queue()->enqueue(pre_val);
   }
 }
 template <class T> void
 G1SATBCardTableModRefBS::write_ref_array_pre_work(T* dst, int count) {
   if (!JavaThread::satb_mark_queue_set().is_active()) return;
   T* elem_ptr = dst;
   for (int i = 0; i < count; i++, elem_ptr++) {
     T heap_oop = oopDesc::load_heap_oop(elem_ptr);
     if (!oopDesc::is_null(heap_oop)) {
       enqueue(oopDesc::decode_heap_oop_not_null(heap_oop));
     }
   }
 }
 G1SATBCardTableLoggingModRefBS::
 G1SATBCardTableLoggingModRefBS(MemRegion whole_heap,
                                int max_covered_regions) :
   G1SATBCardTableModRefBS(whole_heap, max_covered_regions),
   _dcqs(JavaThread::dirty_card_queue_set())
 {
   _kind = G1SATBCTLogging;
 }
 void
 G1SATBCardTableLoggingModRefBS::write_ref_field_work(void* field,
                                                      oop new_val) {
   jbyte* byte = byte_for(field);
   if (*byte != dirty_card) {
     *byte = dirty_card;
     Thread* thr = Thread::current();
     if (thr->is_Java_thread()) {
       JavaThread* jt = (JavaThread*)thr;
       jt->dirty_card_queue().enqueue(byte);
     } else {
       MutexLockerEx x(Shared_DirtyCardQ_lock,
                       Mutex::_no_safepoint_check_flag);
       _dcqs.shared_dirty_card_queue()->enqueue(byte);
     }
   }
 }
 void
 G1SATBCardTableLoggingModRefBS::write_ref_field_static(void* field,
                                                        oop new_val) {
   uintptr_t field_uint = (uintptr_t)field;
   uintptr_t new_val_uint = (uintptr_t)new_val;
   uintptr_t comb = field_uint ^ new_val_uint;
   comb = comb >> HeapRegion::LogOfHRGrainBytes;
   if (comb == 0) return;
   if (new_val == NULL) return;
   // Otherwise, log it.
   G1SATBCardTableLoggingModRefBS* g1_bs =
     (G1SATBCardTableLoggingModRefBS*)Universe::heap()->barrier_set();
   g1_bs->write_ref_field_work(field, new_val);
 }
 void
 G1SATBCardTableLoggingModRefBS::invalidate(MemRegion mr, bool whole_heap) {
   jbyte* byte = byte_for(mr.start());
   jbyte* last_byte = byte_for(mr.last());
   Thread* thr = Thread::current();
   if (whole_heap) {
     while (byte <= last_byte) {
       *byte = dirty_card;
       byte++;
     }
   } else {
     // Enqueue if necessary.
     if (thr->is_Java_thread()) {
       JavaThread* jt = (JavaThread*)thr;
       while (byte <= last_byte) {
         if (*byte != dirty_card) {
           *byte = dirty_card;
           jt->dirty_card_queue().enqueue(byte);
         }
         byte++;
       }
     } else {
       MutexLockerEx x(Shared_DirtyCardQ_lock,
                       Mutex::_no_safepoint_check_flag);
       while (byte <= last_byte) {
         if (*byte != dirty_card) {
           *byte = dirty_card;
           _dcqs.shared_dirty_card_queue()->enqueue(byte);
         }
         byte++;
       }
     }
   }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.cpp@8a5ea0a9ccc4 (annotated)

src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.cpp