jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/parallelScavenge/adjoiningVirtualSpaces.cpp@b985cbb00e68

8223147: JFR Backport
8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling
8202835: jfr/event/os/TestSystemProcess.java fails on missing events
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens

     1 /*

     2  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #include "precompiled.hpp"

    26 #include "gc_implementation/parallelScavenge/adjoiningVirtualSpaces.hpp"

    27 #include "memory/allocation.inline.hpp"

    28 #include "runtime/java.hpp"

    30 AdjoiningVirtualSpaces::AdjoiningVirtualSpaces(ReservedSpace rs,

    31                                                size_t min_low_byte_size,

    32                                                size_t min_high_byte_size,

    33                                                size_t alignment) :

    34   _reserved_space(rs), _min_low_byte_size(min_low_byte_size),

    35   _min_high_byte_size(min_high_byte_size), _low(0), _high(0),

    36   _alignment(alignment) {}

    38 // The maximum byte sizes are for the initial layout of the

    39 // virtual spaces and are not the limit on the maximum bytes sizes.

    40 void AdjoiningVirtualSpaces::initialize(size_t max_low_byte_size,

    41                                         size_t init_low_byte_size,

    42                                         size_t init_high_byte_size) {

    44   // The reserved spaces for the two parts of the virtual space.

    45   ReservedSpace old_rs   = _reserved_space.first_part(max_low_byte_size);

    46   ReservedSpace young_rs = _reserved_space.last_part(max_low_byte_size);

    48   _low = new PSVirtualSpace(old_rs, alignment());

    49   if (!_low->expand_by(init_low_byte_size)) {

    50     vm_exit_during_initialization("Could not reserve enough space for "

    51                                   "object heap");

    52   }

    54   _high = new PSVirtualSpaceHighToLow(young_rs, alignment());

    55   if (!_high->expand_by(init_high_byte_size)) {

    56     vm_exit_during_initialization("Could not reserve enough space for "

    57                                   "object heap");

    58   }

    59 }

    61 bool AdjoiningVirtualSpaces::adjust_boundary_up(size_t change_in_bytes) {

    62   assert(UseAdaptiveSizePolicy && UseAdaptiveGCBoundary, "runtime check");

    63   size_t actual_change = low()->expand_into(high(), change_in_bytes);

    64   return actual_change != 0;

    65 }

    67 bool AdjoiningVirtualSpaces::adjust_boundary_down(size_t change_in_bytes) {

    68   assert(UseAdaptiveSizePolicy && UseAdaptiveGCBoundary, "runtime check");

    69   size_t actual_change = high()->expand_into(low(), change_in_bytes);

    70   return actual_change != 0;

    71 }

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/gc_implementation/parallelScavenge/adjoiningVirtualSpaces.cpp@b985cbb00e68

src/share/vm/gc_implementation/parallelScavenge/adjoiningVirtualSpaces.cpp