1 /*
2 * Copyright (c) 2018, 2019, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package jdk.internal.platform.cgroupv1;
27
28 import jdk.internal.platform.CgroupSubsystemController;
29
30 public class CgroupV1SubsystemController implements CgroupSubsystemController {
31
32 // Values returned larger than this number are unlimited.
33 static long UNLIMITED_MIN = 0x7FFFFFFFFF000000L;
34 String root;
35 String mountPoint;
36 String path;
37
38 public CgroupV1SubsystemController(String root, String mountPoint) {
39 this.root = root;
40 this.mountPoint = mountPoint;
41 }
42
43 public void setPath(String cgroupPath) {
44 if (root != null && cgroupPath != null) {
45 if (root.equals("/")) {
46 if (!cgroupPath.equals("/")) {
47 path = mountPoint + cgroupPath;
48 }
59 if (cgroupPath.length() > root.length()) {
60 String cgroupSubstr = cgroupPath.substring(root.length());
61 path = mountPoint + cgroupSubstr;
62 }
63 }
64 }
65 }
66 }
67 }
68
69 @Override
70 public String path() {
71 return path;
72 }
73
74 public static long convertStringToLong(String strval) {
75 return CgroupSubsystemController.convertStringToLong(strval, Long.MAX_VALUE);
76 }
77
78 public static long longValOrUnlimited(long value) {
79 return value > UNLIMITED_MIN ? CgroupSubsystemController.RETVAL_UNLIMITED : value;
80 }
81 }
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1 /*
2 * Copyright (c) 2018, 2020, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package jdk.internal.platform.cgroupv1;
27
28 import jdk.internal.platform.CgroupSubsystemController;
29 import jdk.internal.platform.Metrics;
30
31 public class CgroupV1SubsystemController implements CgroupSubsystemController {
32
33 // Values returned larger than this number are unlimited.
34 static long UNLIMITED_MIN = 0x7FFFFFFFFF000000L;
35 String root;
36 String mountPoint;
37 String path;
38
39 public CgroupV1SubsystemController(String root, String mountPoint) {
40 this.root = root;
41 this.mountPoint = mountPoint;
42 }
43
44 public void setPath(String cgroupPath) {
45 if (root != null && cgroupPath != null) {
46 if (root.equals("/")) {
47 if (!cgroupPath.equals("/")) {
48 path = mountPoint + cgroupPath;
49 }
60 if (cgroupPath.length() > root.length()) {
61 String cgroupSubstr = cgroupPath.substring(root.length());
62 path = mountPoint + cgroupSubstr;
63 }
64 }
65 }
66 }
67 }
68 }
69
70 @Override
71 public String path() {
72 return path;
73 }
74
75 public static long convertStringToLong(String strval) {
76 return CgroupSubsystemController.convertStringToLong(strval, Long.MAX_VALUE);
77 }
78
79 public static long longValOrUnlimited(long value) {
80 return value > UNLIMITED_MIN ? Metrics.LONG_RETVAL_UNLIMITED : value;
81 }
82 }
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