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src/java.base/linux/classes/jdk/internal/platform/cgroupv1/CgroupV1Subsystem.java
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@ rev 57586 : Review changes
|
o rev 57585 : 8231111: Cgroups v2: Rework Metrics in java.base so as to recognize unified hierarchy
| Reviewed-by: bobv
~
o rev 56863 : 8231111: Cgroups v2: Rework Metrics in java.base so as to recognize unified hierarchy
| Reviewed-by: bobv
~
@@ -1,7 +1,7 @@
/*
- * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2018, 2020, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
@@ -31,10 +31,11 @@
import java.util.stream.Stream;
import jdk.internal.platform.CgroupSubsystem;
import jdk.internal.platform.CgroupSubsystemController;
import jdk.internal.platform.CgroupUtil;
+import jdk.internal.platform.Metrics;
public class CgroupV1Subsystem implements CgroupSubsystem {
private CgroupV1MemorySubSystemController memory;
private CgroupV1SubsystemController cpu;
private CgroupV1SubsystemController cpuacct;
@@ -281,11 +282,11 @@
}
public long[] getPerCpuUsage() {
String usagelist = CgroupSubsystemController.getStringValue(cpuacct, "cpuacct.usage_percpu");
if (usagelist == null) {
- return new long[0];
+ return null;
}
String list[] = usagelist.split(" ");
long percpu[] = new long[list.length];
for (int i = 0; i < list.length; i++) {
@@ -317,11 +318,11 @@
}
public long getCpuShares() {
long retval = getLongValue(cpu, "cpu.shares");
if (retval == 0 || retval == 1024)
- return -1;
+ return Metrics.LONG_RETVAL_UNLIMITED;
else
return retval;
}
public long getCpuNumPeriods() {
@@ -363,11 +364,11 @@
public double getCpuSetMemoryPressure() {
return CgroupSubsystemController.getDoubleValue(cpuset, "cpuset.memory_pressure");
}
- public boolean isCpuSetMemoryPressureEnabled() {
+ public Boolean isCpuSetMemoryPressureEnabled() {
long val = getLongValue(cpuset, "cpuset.memory_pressure_enabled");
return (val == 1);
}
@@ -471,11 +472,11 @@
public long getMemoryAndSwapUsage() {
return getLongValue(memory, "memory.memsw.usage_in_bytes");
}
- public boolean isMemoryOOMKillEnabled() {
+ public Boolean isMemoryOOMKillEnabled() {
long val = CgroupSubsystemController.getLongEntry(memory, "memory.oom_control", "oom_kill_disable");
return (val == 0);
}
public long getMemorySoftLimit() {
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