1/*
2 * Copyright (c) 2015, 2018, 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 */
24
25#include "precompiled.hpp"
26#include "gc/parallel/jvmFlagConstraintsParallel.hpp"
27#include "runtime/globals.hpp"
28#include "utilities/globalDefinitions.hpp"
29
30JVMFlag::Error ParallelGCThreadsConstraintFuncParallel(uint value, bool verbose) {
31 // Parallel GC passes ParallelGCThreads when creating GrowableArray as 'int' type parameter.
32 // So can't exceed with "max_jint"
33
34 if (UseParallelGC && (value > (uint)max_jint)) {
35 JVMFlag::printError(verbose,
36 "ParallelGCThreads (" UINT32_FORMAT ") must be "
37 "less than or equal to " UINT32_FORMAT " for Parallel GC\n",
38 value, max_jint);
39 return JVMFlag::VIOLATES_CONSTRAINT;
40 }
41 return JVMFlag::SUCCESS;
42}
43
44JVMFlag::Error InitialTenuringThresholdConstraintFuncParallel(uintx value, bool verbose) {
45 // InitialTenuringThreshold is only used for ParallelGC.
46 if (UseParallelGC && (value > MaxTenuringThreshold)) {
47 JVMFlag::printError(verbose,
48 "InitialTenuringThreshold (" UINTX_FORMAT ") must be "
49 "less than or equal to MaxTenuringThreshold (" UINTX_FORMAT ")\n",
50 value, MaxTenuringThreshold);
51 return JVMFlag::VIOLATES_CONSTRAINT;
52 }
53 return JVMFlag::SUCCESS;
54}
55
56JVMFlag::Error MaxTenuringThresholdConstraintFuncParallel(uintx value, bool verbose) {
57 // As only ParallelGC uses InitialTenuringThreshold,
58 // we don't need to compare InitialTenuringThreshold with MaxTenuringThreshold.
59 if (UseParallelGC && (value < InitialTenuringThreshold)) {
60 JVMFlag::printError(verbose,
61 "MaxTenuringThreshold (" UINTX_FORMAT ") must be "
62 "greater than or equal to InitialTenuringThreshold (" UINTX_FORMAT ")\n",
63 value, InitialTenuringThreshold);
64 return JVMFlag::VIOLATES_CONSTRAINT;
65 }
66
67 return JVMFlag::SUCCESS;
68}
69