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 }
50 else {
51 path = mountPoint;
52 }
55 if (root.equals(cgroupPath)) {
56 path = mountPoint;
57 }
58 else {
59 if (cgroupPath.startsWith(root)) {
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 }
|
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.CgroupSubsystem;
29 import jdk.internal.platform.CgroupSubsystemController;
30
31 public class CgroupV1SubsystemController implements CgroupSubsystemController {
32
33 private static final double DOUBLE_RETVAL_UNLIMITED = CgroupSubsystem.LONG_RETVAL_UNLIMITED;
34 // Values returned larger than this number are unlimited.
35 static long UNLIMITED_MIN = 0x7FFFFFFFFF000000L;
36 String root;
37 String mountPoint;
38 String path;
39
40 public CgroupV1SubsystemController(String root, String mountPoint) {
41 this.root = root;
42 this.mountPoint = mountPoint;
43 }
44
45 public void setPath(String cgroupPath) {
46 if (root != null && cgroupPath != null) {
47 if (root.equals("/")) {
48 if (!cgroupPath.equals("/")) {
49 path = mountPoint + cgroupPath;
50 }
51 else {
52 path = mountPoint;
53 }
56 if (root.equals(cgroupPath)) {
57 path = mountPoint;
58 }
59 else {
60 if (cgroupPath.startsWith(root)) {
61 if (cgroupPath.length() > root.length()) {
62 String cgroupSubstr = cgroupPath.substring(root.length());
63 path = mountPoint + cgroupSubstr;
64 }
65 }
66 }
67 }
68 }
69 }
70
71 @Override
72 public String path() {
73 return path;
74 }
75
76 public static long getLongEntry(CgroupSubsystemController controller, String param, String entryname) {
77 return CgroupSubsystemController.getLongEntry(controller,
78 param,
79 entryname,
80 CgroupSubsystem.LONG_RETVAL_UNLIMITED /* retval on error */);
81 }
82
83 public static double getDoubleValue(CgroupSubsystemController controller, String parm) {
84 return CgroupSubsystemController.getDoubleValue(controller,
85 parm,
86 DOUBLE_RETVAL_UNLIMITED /* retval on error */);
87 }
88
89 public static long convertStringToLong(String strval) {
90 return CgroupSubsystemController.convertStringToLong(strval,
91 Long.MAX_VALUE /* overflow value */,
92 CgroupSubsystem.LONG_RETVAL_UNLIMITED /* retval on error */);
93 }
94
95 public static long longValOrUnlimited(long value) {
96 return value > UNLIMITED_MIN ? CgroupSubsystem.LONG_RETVAL_UNLIMITED : value;
97 }
98
99 public static long getLongValueMatchingLine(CgroupSubsystemController controller,
100 String param,
101 String match) {
102 return CgroupSubsystemController.getLongValueMatchingLine(controller,
103 param,
104 match,
105 CgroupV1SubsystemController::convertHierachicalLimitLine,
106 CgroupSubsystem.LONG_RETVAL_UNLIMITED);
107 }
108
109 public static long convertHierachicalLimitLine(String line) {
110 String[] tokens = line.split("\\s");
111 if (tokens.length == 2) {
112 String strVal = tokens[1];
113 return CgroupV1SubsystemController.convertStringToLong(strVal);
114 }
115 return CgroupV1SubsystemController.UNLIMITED_MIN + 1; // unlimited
116 }
117
118 }
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