src/hotspot/share/gc/epsilon/epsilonMemoryPool.cpp
author shade
Tue, 12 Jun 2018 15:03:00 +0200
changeset 50523 7b7c75d87f9b
child 51332 c25572739e7c
permissions -rw-r--r--
8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector Summary: Introduce Epsilon GC Reviewed-by: rkennke, ihse, pliden, eosterlund, lmesnik, jgeorge, stefank
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
50523
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
     1
/*
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
     2
 * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved.
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
     3
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
     4
 *
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
     5
 * This code is free software; you can redistribute it and/or modify it
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
     6
 * under the terms of the GNU General Public License version 2 only, as
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
     7
 * published by the Free Software Foundation.
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
     8
 *
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
     9
 * This code is distributed in the hope that it will be useful, but WITHOUT
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    10
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    11
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    12
 * version 2 for more details (a copy is included in the LICENSE file that
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    13
 * accompanied this code).
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    14
 *
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    15
 * You should have received a copy of the GNU General Public License version
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    16
 * 2 along with this work; if not, write to the Free Software Foundation,
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    17
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    18
 *
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    19
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    20
 * or visit www.oracle.com if you need additional information or have any
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    21
 * questions.
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    22
 *
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    23
 */
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    24
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    25
#include "precompiled.hpp"
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    26
#include "gc/epsilon/epsilonHeap.hpp"
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    27
#include "gc/epsilon/epsilonMemoryPool.hpp"
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    28
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    29
EpsilonMemoryPool::EpsilonMemoryPool(EpsilonHeap* heap) :
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    30
        _heap(heap),
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    31
        CollectedMemoryPool("Epsilon Heap",
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    32
                            heap->capacity(),
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    33
                            heap->max_capacity(),
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    34
                            false) {
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    35
  assert(UseEpsilonGC, "sanity");
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    36
}
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    37
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    38
MemoryUsage EpsilonMemoryPool::get_memory_usage() {
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    39
  size_t initial_sz = initial_size();
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    40
  size_t max_sz     = max_size();
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    41
  size_t used       = used_in_bytes();
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    42
  size_t committed  = committed_in_bytes();
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    43
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    44
  return MemoryUsage(initial_sz, used, committed, max_sz);
7b7c75d87f9b 8204180: Implementation: JEP 318: Epsilon, A No-Op Garbage Collector
shade
parents:
diff changeset
    45
}