--- a/src/hotspot/os/linux/osContainer_linux.cpp Tue Jan 08 17:14:14 2019 -0500
+++ b/src/hotspot/os/linux/osContainer_linux.cpp Tue Jan 08 17:20:28 2019 -0500
@@ -31,6 +31,24 @@
#include "logging/log.hpp"
#include "osContainer_linux.hpp"
+/*
+ * PER_CPU_SHARES has been set to 1024 because CPU shares' quota
+ * is commonly used in cloud frameworks like Kubernetes[1],
+ * AWS[2] and Mesos[3] in a similar way. They spawn containers with
+ * --cpu-shares option values scaled by PER_CPU_SHARES. Thus, we do
+ * the inverse for determining the number of possible available
+ * CPUs to the JVM inside a container. See JDK-8216366.
+ *
+ * [1] https://kubernetes.io/docs/concepts/configuration/manage-compute-resources-container/#meaning-of-cpu
+ * In particular:
+ * When using Docker:
+ * The spec.containers[].resources.requests.cpu is converted to its core value, which is potentially
+ * fractional, and multiplied by 1024. The greater of this number or 2 is used as the value of the
+ * --cpu-shares flag in the docker run command.
+ * [2] https://docs.aws.amazon.com/AmazonECS/latest/APIReference/API_ContainerDefinition.html
+ * [3] https://github.com/apache/mesos/blob/3478e344fb77d931f6122980c6e94cd3913c441d/src/docker/docker.cpp#L648
+ * https://github.com/apache/mesos/blob/3478e344fb77d931f6122980c6e94cd3913c441d/src/slave/containerizer/mesos/isolators/cgroups/constants.hpp#L30
+ */
#define PER_CPU_SHARES 1024
bool OSContainer::_is_initialized = false;
--- a/src/hotspot/share/ci/bcEscapeAnalyzer.cpp Tue Jan 08 17:14:14 2019 -0500
+++ b/src/hotspot/share/ci/bcEscapeAnalyzer.cpp Tue Jan 08 17:20:28 2019 -0500
@@ -79,7 +79,6 @@
void add_unknown() { _bits = UNKNOWN; }
void add_allocated() { _bits = ALLOCATED; }
void set_union(const ArgumentMap &am) { _bits |= am._bits; }
- void set_intersect(const ArgumentMap &am) { _bits |= am._bits; }
void set_difference(const ArgumentMap &am) { _bits &= ~am._bits; }
void operator=(const ArgumentMap &am) { _bits = am._bits; }
bool operator==(const ArgumentMap &am) { return _bits == am._bits; }
@@ -1219,8 +1218,6 @@
}
bool BCEscapeAnalyzer::compute_escape_for_intrinsic(vmIntrinsics::ID iid) {
- ArgumentMap arg;
- arg.clear();
switch (iid) {
case vmIntrinsics::_getClass:
_return_local = false;
--- a/src/hotspot/share/prims/jni.cpp Tue Jan 08 17:14:14 2019 -0500
+++ b/src/hotspot/share/prims/jni.cpp Tue Jan 08 17:20:28 2019 -0500
@@ -2709,6 +2709,9 @@
ElementType* result; \
int len = a->length(); \
if (len == 0) { \
+ if (isCopy != NULL) { \
+ *isCopy = JNI_FALSE; \
+ } \
/* Empty array: legal but useless, can't return NULL. \
* Return a pointer to something useless. \
* Avoid asserts in typeArrayOop. */ \
--- a/src/java.compiler/share/classes/javax/annotation/processing/AbstractProcessor.java Tue Jan 08 17:14:14 2019 -0500
+++ b/src/java.compiler/share/classes/javax/annotation/processing/AbstractProcessor.java Tue Jan 08 17:20:28 2019 -0500
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2019, 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
@@ -92,10 +92,10 @@
* same set of strings as the annotation. If the class is not so
* annotated, an empty set is returned.
*
- * If the {@link ProcessingEnvironment#getSourceVersion source
+ * If the {@linkplain ProcessingEnvironment#getSourceVersion source
* version} does not support modules, in other words if it is less
* than or equal to {@link SourceVersion#RELEASE_8 RELEASE_8},
- * then any leading {@link Processor#getSupportedAnnotationTypes
+ * then any leading {@linkplain Processor#getSupportedAnnotationTypes
* module prefixes} are stripped from the names.
*
* @return the names of the annotation types supported by this
--- a/src/java.compiler/share/classes/javax/annotation/processing/Filer.java Tue Jan 08 17:14:14 2019 -0500
+++ b/src/java.compiler/share/classes/javax/annotation/processing/Filer.java Tue Jan 08 17:20:28 2019 -0500
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2019, 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
@@ -60,7 +60,7 @@
* by {@code '/'}; {@code '.'} and {@code '..'} are invalid path
* segments. A valid relative name must match the
* "path-rootless" rule of <a
- * href="http://www.ietf.org/rfc/rfc3986.txt">RFC 3986</a>, section
+ * href="http://www.ietf.org/html/rfc3986.txt">RFC 3986</a>, section
* 3.3.
*
* <p>The file creation methods take a variable number of arguments to
--- a/src/java.compiler/share/classes/javax/annotation/processing/Processor.java Tue Jan 08 17:14:14 2019 -0500
+++ b/src/java.compiler/share/classes/javax/annotation/processing/Processor.java Tue Jan 08 17:20:28 2019 -0500
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2019, 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
@@ -59,7 +59,7 @@
* constructor of the processor class.
*
* <li>Next, the tool calls the {@link #init init} method with
- * an appropriate {@code ProcessingEnvironment}.
+ * an appropriate {@link ProcessingEnvironment}.
*
* <li>Afterwards, the tool calls {@link #getSupportedAnnotationTypes
* getSupportedAnnotationTypes}, {@link #getSupportedOptions
--- a/src/java.compiler/share/classes/javax/lang/model/element/ModuleElement.java Tue Jan 08 17:14:14 2019 -0500
+++ b/src/java.compiler/share/classes/javax/lang/model/element/ModuleElement.java Tue Jan 08 17:20:28 2019 -0500
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2019, 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
@@ -317,7 +317,7 @@
/**
* Returns the specific modules to which the package is being exported,
- * or null, if the package is exported to all modules which
+ * or {@code null}, if the package is exported to all modules which
* have readability to this module.
* @return the specific modules to which the package is being exported
*/
@@ -339,7 +339,7 @@
/**
* Returns the specific modules to which the package is being open
- * or null, if the package is open all modules which
+ * or {@code null}, if the package is open all modules which
* have readability to this module.
* @return the specific modules to which the package is being opened
*/
--- a/src/java.compiler/share/classes/javax/lang/model/util/Elements.java Tue Jan 08 17:14:14 2019 -0500
+++ b/src/java.compiler/share/classes/javax/lang/model/util/Elements.java Tue Jan 08 17:20:28 2019 -0500
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2019, 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
@@ -511,6 +511,7 @@
* @param hidden the second element
* @return {@code true} if and only if the first element hides
* the second
+ * @jls 8.4.8 Inheritance, Overriding, and Hiding
*/
boolean hides(Element hider, Element hidden);