--- jsr166/build.xml	2020/06/19 18:09:35	1.317
+++ jsr166/build.xml	2020/12/12 22:13:53	1.322
@@ -25,6 +25,7 @@
   $HOME/jdk/jdk14
   $HOME/jdk/jdk15
   $HOME/jdk/jdk16
+  $HOME/jdk/jdk17
   where each of the above is a JDK or a symlink to same, and
   $HOME/jdk/src/jdk11
   $HOME/jdk/src/jdk12
@@ -32,11 +33,12 @@
   $HOME/jdk/src/jdk14
   $HOME/jdk/src/jdk15
   $HOME/jdk/src/jdk16
+  $HOME/jdk/src/jdk17
   where each of the above is a JDK source tree or a symlink to same.
 
   Alternatively, define ant variables thus:
   ant -Djdk$N.home=... -Djdk$N.src.home=...
-  for $N in 11 .. 16 ...
+  for $N in 11 .. 17 ...
 
   As of 2016-03, the sources in src/main are for jdk9+ only.
   As of 2019-08, the sources in src/main are for jdk11+ only.
@@ -102,6 +104,7 @@
   <defjdklocations v="14"/>
   <defjdklocations v="15"/>
   <defjdklocations v="16"/>
+  <defjdklocations v="17"/>
 
   <!-- Source locations -->
   <property name="src.dir"              location="${basedir}/src/main"/>
@@ -114,6 +117,7 @@
   <property name="jtreg14.src.dir"      location="${test.src.dir}/jtreg"/>
   <property name="jtreg15.src.dir"      location="${test.src.dir}/jtreg"/>
   <property name="jtreg16.src.dir"      location="${test.src.dir}/jtreg"/>
+  <property name="jtreg17.src.dir"      location="${test.src.dir}/jtreg"/>
   <property name="jtreg.src.dir"        location="${jtreg11.src.dir}"/>
   <property name="lib.dir"              location="${basedir}/lib"/>
   <property name="dist.dir"             location="${basedir}/dist"/>
@@ -141,8 +145,9 @@
   <property name="java12.docroot.url" value="https://docs.oracle.com/en/java/javase/12/docs"/>
   <property name="java13.docroot.url" value="https://docs.oracle.com/en/java/javase/13/docs"/>
   <property name="java14.docroot.url" value="https://docs.oracle.com/en/java/javase/14/docs"/>
-  <property name="java15.docroot.url" value="https://download.java.net/java/early_access/jdk15/docs"/>
+  <property name="java15.docroot.url" value="https://docs.oracle.com/en/java/javase/15/docs"/>
   <property name="java16.docroot.url" value="https://download.java.net/java/early_access/jdk16/docs"/>
+  <property name="java17.docroot.url" value="https://download.java.net/java/early_access/jdk17/docs"/>
   <!-- Default jdk doc location (latest stable LTS release seems best) -->
   <property name="java.docroot.url"   value="${java11.docroot.url}"/>
 
@@ -152,7 +157,8 @@
   <property name="java13.api.url"     value="${java13.docroot.url}/api/"/>
   <property name="java14.api.url"     value="${java14.docroot.url}/api/"/>
   <property name="java15.api.url"     value="${java15.docroot.url}/api/"/>
-  <property name="java16.api.url"     value="${java15.docroot.url}/api/"/>
+  <property name="java16.api.url"     value="${java16.docroot.url}/api/"/>
+  <property name="java17.api.url"     value="${java17.docroot.url}/api/"/>
   <property name="java.api.url"       value="${java.docroot.url}/api/"/>
 
   <!-- Define the "jtreg" task -->
@@ -254,6 +260,7 @@
     </sequential>
   </macrodef>
 
+  <defjtregtests v="17"/>
   <defjtregtests v="16"/>
   <defjtregtests v="15"/>
   <defjtregtests v="14"/>
@@ -278,18 +285,26 @@
     <!-- ant -Djtreg.verbose=time,fail,error jtreg -->
     <property name="jtreg.verbose" value="nopass,fail,error"/>
 
-    <delete dir="@{workdir}/JTwork"   quiet="true"/>
+    <!-- concurrency > 1 mitigates slowness of some jtreg tests -->
+    <!-- BUT concurrency:auto starts "too many" VMs; just 1 free core each -->
+    <!-- In 2020 concurrency:3 seems like a sweet spot -->
+    <!-- Override using:  ant -Djtreg.concurrency="N" jtreg -->
+    <property name="jtreg.concurrency" value="3"/>
+
+    <delete dir="@{workdir}/JTwork" quiet="true"/>
     <jtreg dir="${jtreg@{target}.src.dir}"
            jdk="${jdk@{target}.home}"
            workDir="@{workdir}/JTwork">
       <patternset refid="jdk@{target}.jtreg.tests"/>
-      <arg value="-javacoptions:--patch-module=java.base=@{classes}"/>
-      <arg value="-vmoptions:--patch-module=java.base=@{classes}"/>
+      <arg value="-javacoption:--patch-module=java.base=@{classes}"/>
+      <arg value="-vmoption:--patch-module=java.base=@{classes}"/>
+      <arg value="-vmoption:-Xmx256m"/>
+      <arg value="-concurrency:${jtreg.concurrency}"/>
+      <arg value="-vmoptions:-esa -ea"/>
       <arg value="-vmoptions:${vmoptions}" if:set="vmoptions"/>
       <arg value="-agentvm"/>
       <arg value="-noreport"/>
       <arg value="-verbose:@{verbose}"/>
-      <arg value="-vmoptions:-esa -ea"/>
       <arg value="-automatic"/>
       <arg value="-k:!ignore"/>
       <arg line="@{jtregflags}"/>
@@ -754,6 +769,7 @@
   <property name="errorprone.jsr166.user.flags" value=""/>
   <property name="errorprone.jsr166.flags"
             value="-Xep:HashtableContains:OFF
+                   -Xep:PreferJavaTimeOverload:OFF
                    -Xep:JdkObsolete:OFF
                    -Xep:MissingOverride:OFF
                    -Xep:MissingFail:OFF
@@ -773,6 +789,7 @@
   <property name="errorprone.jsr166.test.flags"
             value="-Xep:StringSplitter:OFF
                    -Xep:BoxedPrimitiveConstructor:OFF
+                   -Xep:UnnecessaryParentheses:OFF
                    -Xep:ModifyingCollectionWithItself:OFF"/>
   <!-- ant -emacs errorprone |& grep -EA1 '(warning|error):|warnings' -->
   <target name="errorprone"