/*

 * Copyright (c) 2018, 2019, 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.

 */

#include "precompiled.hpp"

#include "gc/z/zAddress.inline.hpp"

#include "gc/z/zThreadLocalAllocBuffer.hpp"

#include "runtime/globals.hpp"

#include "runtime/thread.hpp"

ZPerWorker<ThreadLocalAllocStats>* ZThreadLocalAllocBuffer::_stats = NULL;

void ZThreadLocalAllocBuffer::initialize() {

  if (UseTLAB) {

    assert(_stats == NULL, "Already initialized");

    _stats = new ZPerWorker<ThreadLocalAllocStats>();

    reset_statistics();

  }

}

void ZThreadLocalAllocBuffer::reset_statistics() {

  if (UseTLAB) {

    ZPerWorkerIterator<ThreadLocalAllocStats> iter(_stats);

    for (ThreadLocalAllocStats* stats; iter.next(&stats);) {

      stats->reset();

    }

  }

}

void ZThreadLocalAllocBuffer::publish_statistics() {

  if (UseTLAB) {

    ThreadLocalAllocStats total;

    ZPerWorkerIterator<ThreadLocalAllocStats> iter(_stats);

    for (ThreadLocalAllocStats* stats; iter.next(&stats);) {

      total.update(*stats);

    }

    total.publish();

  }

}

static void fixup_address(HeapWord** p) {

  *p = (HeapWord*)ZAddress::good_or_null((uintptr_t)*p);

}

void ZThreadLocalAllocBuffer::retire(Thread* thread) {

  if (UseTLAB && thread->is_Java_thread()) {

    ThreadLocalAllocStats* const stats = _stats->addr();

    thread->tlab().addresses_do(fixup_address);

    thread->tlab().retire(stats);

    thread->tlab().resize();

  }

}

void ZThreadLocalAllocBuffer::remap(Thread* thread) {

  if (UseTLAB && thread->is_Java_thread()) {

    thread->tlab().addresses_do(fixup_address);

  }

}