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8266490: Extend the OSContainer API to support the pids controller of cgroups

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Reviewed-by: sgehwolf, lucy
This commit is contained in:
Matthias Baesken 2021-08-10 07:40:21 +00:00
parent 2384e12888
commit 089e83bf1b
22 changed files with 527 additions and 79 deletions
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13
src/java.base/share/classes/jdk/internal/platform/Metrics.java
View file

@ -352,6 +352,19 @@ public interface Metrics {
*/
public long getMemorySoftLimit();
/*****************************************************************
* pids subsystem
****************************************************************/
/**
* Returns the maximum number of tasks that may be created in the Isolation Group.
*
* @return The maximum number of tasks, -1 if the quota is unlimited or
* -2 if not supported.
*
*/
public long getPidsMax();
/*****************************************************************
* BlKIO Subsystem
****************************************************************/

15
src/java.base/share/classes/sun/launcher/LauncherHelper.java
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2007, 2020, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2007, 2021, 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
@ -405,12 +405,23 @@ public final class LauncherHelper {
limit = c.getMemoryAndSwapLimit();
ostream.println(formatLimitString(limit, INDENT + "Memory & Swap Limit: ", longRetvalNotSupported));
limit = c.getPidsMax();
ostream.println(formatLimitString(limit, INDENT + "Maximum Processes Limit: ",
longRetvalNotSupported, false));
ostream.println("");
}
private static String formatLimitString(long limit, String prefix, long unavailable) {
return formatLimitString(limit, prefix, unavailable, true);
}
private static String formatLimitString(long limit, String prefix, long unavailable, boolean scale) {
if (limit >= 0) {
return prefix + SizePrefix.scaleValue(limit);
if (scale) {
return prefix + SizePrefix.scaleValue(limit);
} else {
return prefix + limit;
}
} else if (limit == unavailable) {
return prefix + "N/A";
} else {