--- jsr166/build.xml	2003/05/28 14:19:25	1.30
+++ jsr166/build.xml	2023/01/07 16:30:33	1.328
@@ -1,4 +1,7 @@
-<project name="jsr166" default="usage">
+<project name="jsr166" default="usage"
+  xmlns:if="ant:if"
+  xmlns:unless="ant:unless"
+  xmlns:ivy="antlib:org.apache.ivy.ant">
 
   <description>
 ------------------------------------------------------------------------------
@@ -6,540 +9,746 @@
 
   Usage: ant [target]
 
+  See http://gee.cs.oswego.edu/dl/concurrency-interest/index.html for
+  more details.
+
   User-specific settings are read from user.properties.
-  See user.properties.sample for examples.
+  See user.properties.sample for an explanation of some useful settings.
+
+  The repository contains all dependencies except for ant and the JDK
+  itself.  Because the JDK version matters and because different
+  targets require different JDKs, we assume that users have created a
+  hierarchy containing:
+  $HOME/jdk/jdk17
+  $HOME/jdk/jdk19
+  where each of the above is a JDK or a symlink to same, and
+  $HOME/jdk/src/jdk17
+  where each of the above is a JDK source tree or a symlink to same.
+
+  Alternatively, define ant variables thus:
+  ant -Djdk$N.home=... -Djdk$N.src.home=...
+  for $N in 17 .. 19 ...
+
+  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.
+  As of 2019-10, compatibility support for jdk8 is dropped entirely.
+  As of 2022-02, the sources in src/main are for jdk17+ only.
 ------------------------------------------------------------------------------
   </description>
 
-  <target name="usage" description="Advises user to run with -projecthelp">
-    <echo>Run "ant -projecthelp" for full usage information.</echo>
+  <!-- Run 'ant -projecthelp' (default target) -->
+  <target name="usage">
+    <java classname="org.apache.tools.ant.Main">
+      <arg value="-projecthelp" />
+    </java>
   </target>
 
+  <!-- HOWTO printf debug: <echo message="prop=${prop}"/> -->
 
   <!-- User-specific settings -->
   <property file="user.properties"/>
 
 
   <!-- Compilation options -->
-  <property name="build.sourcelevel"    value="1.5"/>
-  <property name="build.docsourcelevel" value="1.4"/>
   <property name="build.debug"          value="true"/>
   <property name="build.debuglevel"     value="source,lines,vars"/>
   <property name="build.deprecation"    value="false"/>
+  <property name="build.javadoc.access" value="protected"/>
 
   <!-- Build locations -->
-  <property name="build.dir"            location="build"/>
-  <property name="build.classes.dir"    location="${build.dir}/classes"/>
-  <property name="build.emulation.dir"  location="${build.dir}/emulation"/>
-  <property name="build.testcases.dir"  location="${build.dir}/testcases"/>
-  <property name="build.lib.dir"        location="${build.dir}/lib"/>
-  <property name="build.ant.dir"        location="${build.dir}/ant"/>
-  <property name="build.javadocs.dir"   location="${build.dir}/javadocs"/>
-  <property name="build.stripped.dir"   location="${build.dir}/stripped"/>
-  <property name="build.reports.dir"    location="${build.dir}/reports"/>
-  <property name="build.doccheck.dir"   location="${build.dir}/doccheck"/>
-  <property name="build.filter.src.dir" location="${build.dir}/filtersrc"/>
+  <property name="build.dir"                   location="build"/>
+  <property name="build.classes.dir"           location="${build.dir}/classes"/>
+  <property name="build.testcases.dir"         location="${build.dir}/testcases"/>
+  <property name="build.loops.dir"             location="${build.dir}/loops"/>
+
+  <!-- JDK locations -->
+  <property name="jdks.home"  location="${user.home}/jdk"/>
+
+  <macrodef name="defjdklocations">
+    <attribute name="v"/>
+    <sequential>
+    <property name="jdk@{v}.home"     location="${jdks.home}/jdk@{v}"/>
+    <property name="java@{v}"         location="${jdk@{v}.home}/bin/java"/>
+    <property name="javac@{v}"        location="${jdk@{v}.home}/bin/javac"/>
+    <property name="javadoc@{v}"      location="${jdk@{v}.home}/bin/javadoc"/>
+    <property name="jdk@{v}.src.home" location="${jdks.home}/src/jdk@{v}"/>
+    <property name="jdk@{v}.src.dir"  location="${jdk@{v}.src.home}/jdk/src/java.base/share/classes"/>
+    </sequential>
+  </macrodef>
+
+  <macrodef name="mirror-dir">
+    <attribute name="src"/>
+    <attribute name="dst"/>
+    <sequential>
+    <delete dir="@{dst}"/>
+    <mkdir dir="@{dst}"/>
+    <copy todir="@{dst}" preservelastmodified="true">
+      <fileset dir="@{src}"/>
+    </copy>
+    </sequential>
+  </macrodef>
+
+  <defjdklocations v="17"/>
+  <defjdklocations v="18"/>
+  <defjdklocations v="19"/>
+  <defjdklocations v="20"/>
+  <defjdklocations v="21"/>
 
   <!-- Source locations -->
   <property name="src.dir"              location="${basedir}/src/main"/>
-  <property name="emulation.src.dir"    location="${basedir}/src/emulation"/>
   <property name="test.src.dir"         location="${basedir}/src/test"/>
-  <property name="ant.src.dir"          location="${basedir}/etc/ant"/>
-  <property name="stylesheet.dir"       location="${basedir}/etc/xsl"/>
+  <property name="loops.src.dir"        location="${basedir}/src/loops"/>
+  <property name="tck.src.dir"          location="${test.src.dir}/tck"/>
+  <property name="jtreg17.src.dir"      location="${test.src.dir}/jtreg"/>
+  <property name="jtreg18.src.dir"      location="${test.src.dir}/jtreg"/>
+  <property name="jtreg19.src.dir"      location="${test.src.dir}/jtreg"/>
+  <property name="jtreg20.src.dir"      location="${test.src.dir}/jtreg"/>
+  <property name="jtreg21.src.dir"      location="${test.src.dir}/jtreg"/>
+  <property name="jtreg.src.dir"        location="${jtreg17.src.dir}"/>
   <property name="lib.dir"              location="${basedir}/lib"/>
   <property name="dist.dir"             location="${basedir}/dist"/>
+  <property name="topsrc.dir"           location="${basedir}/src"/>
 
-  <!-- Distribution locations -->
-  <property name="dist.javadocs.dir"    location="${dist.dir}/docs"/>
+  <!-- Javadoc locations -->
+  <property name="docs.dir"          location="${build.dir}/docs"/>
+  <property name="dist.docs.dir"     location="${dist.dir}/docs"/>
 
   <!-- Jar locations -->
-  <property name="product.jar"          location="${build.lib.dir}/jsr166.jar"/>
-  <property name="javac.jar"            location="${lib.dir}/javac.jar"/>
-  <property name="collect.jar"          location="${lib.dir}/collect.jar"/>
-  <property name="junit.jar"            location="${lib.dir}/junit.jar"/>
-  <property name="rt.jar"               location="${java.home}/lib/rt.jar"/>
-
-
-
-  <!--
-   ! Bootclasspath munging for source compilation.
-   -->
-
-  <path id="javac.bootclasspath.prefix">
-    <!-- <pathelement location="${src.dir}"/> -->
-    <pathelement location="${javac.jar}"/>
-  </path>
-
-  <path id="javac.bootclasspath">
-    <!-- <pathelement location="${src.dir}"/> -->
-    <pathelement location="${collect.jar}"/>
-    <pathelement location="${rt.jar}"/>
-  </path>
-
-  <!-- Flatten bootclasspath prefix into a platform-appropriate string -->
-  <property name="javac.bootclasspath.prefix" refid="javac.bootclasspath.prefix"/>
-
-  <!-- Turn the flattened bootclasspath prefix into a javac argument -->
-  <property name="javac.args" value='-J-Xbootclasspath/p:${javac.bootclasspath.prefix}'/>
+  <property name="product.jar"      location="${build.dir}/jsr166.jar"/>
+  <property name="junit.jar"        location="${lib.dir}/junit.jar"/>
 
+  <!-- Canonical location of jdk docs root, to use with javadoc -Xdocrootparent flag -->
+  <!-- Switched to https: in 2017-10 - JDK-8190312 -->
+  <property name="java17.docroot.url" value="https://docs.oracle.com/en/java/javase/17/docs"/>
+  <property name="java18.docroot.url" value="https://docs.oracle.com/en/java/javase/18/docs"/>
+  <property name="java19.docroot.url" value="https://docs.oracle.com/en/java/javase/19/docs"/>
+  <property name="java20.docroot.url" value="https://download.java.net/java/early_access/jdk20/docs"/>
+  <property name="java21.docroot.url" value="https://download.java.net/java/early_access/jdk21/docs"/>
+  <!-- Default jdk doc location (latest stable LTS release seems best) -->
+  <property name="java.docroot.url"   value="${java17.docroot.url}"/>
+
+  <!-- Canonical location of jdk API docs, to use with javadoc link attribute -->
+  <property name="java17.api.url"     value="${java17.docroot.url}/api/"/>
+  <property name="java18.api.url"     value="${java18.docroot.url}/api/"/>
+  <property name="java19.api.url"     value="${java19.docroot.url}/api/"/>
+  <property name="java20.api.url"     value="${java20.docroot.url}/api/"/>
+  <property name="java21.api.url"     value="${java21.docroot.url}/api/"/>
+  <property name="java.api.url"       value="${java.docroot.url}/api/"/>
+
+  <!-- Define the "jtreg" task -->
+  <!-- See the docs in "jtreg -onlineHelp" -->
+  <taskdef name="jtreg" classname="com.sun.javatest.regtest.Main$$Ant"
+           classpath="${lib.dir}/jtreg.jar" />
+
+  <!-- Tck configuration options; see JSR166TestCase.java
+   To profile a single tck test class:
+   ant -Djsr166.profileTests=true -Djsr166.profileThreshold=10 -Djsr166.tckTestClass=CompletableFutureTest tck
+   To stress test a single tck test class:
+   ant -Djsr166.tckTestClass=CountedCompleterTest -Djsr166.runsPerTest=100 tck
+   To stress test a single tck test method:
+   ant -Djsr166.tckTestClass=RecursiveTaskTest -Djsr166.runsPerTest=1000 -Djsr166.methodFilter=testAbnormalInvokeAll3 tck
+  -->
+  <property name="jsr166.tckTestClass"     value="JSR166TestCase"/>
+  <macrodef name="run-tck-tests">
+    <attribute name="tck.src.dir" default="${tck.src.dir}"/>
+    <attribute name="target"/>
+    <attribute name="compile-target" default="@{target}"/>
+    <attribute name="workdir"/>
+    <attribute name="classes"/>
+    <!--
+        <attribute name="jvmflags" default="-XX:+UseParallelGC -XX:-UseBiasedLocking -ea -esa -Djsr166.testImplementationDetails=true"/>
+    -->
+        <attribute name="jvmflags" default="-ea -esa -Djsr166.testImplementationDetails=true"/>
+    <element name="javac-elements" optional="true"/>
+
+    <sequential>
+
+    <mkdir dir="@{workdir}/tck-classes"/>
+
+    <javac srcdir="@{tck.src.dir}"
+           destdir="@{workdir}/tck-classes"
+           debug="${build.debug}"
+           debuglevel="${build.debuglevel}"
+           deprecation="${build.deprecation}"
+           source="@{compile-target}"
+           target="@{compile-target}"
+           classpath="${junit.jar}"
+           includeAntRuntime="false"
+           includeJavaRuntime="false"
+           encoding="ASCII"
+           executable="${javac@{compile-target}}"
+           fork="true">
+
+      <include name="*.java"/>
+      <compilerarg value="-XDignore.symbol.file=true"/>
+      <compilerarg value="-Xlint:all,-unchecked,-rawtypes,-serial,-deprecation,-try"/>
+      <compilerarg value="-Xdoclint:reference/private"/>
+      <compilerarg value="--patch-module=java.base=@{classes}"/>
+      <compilerarg line="${build.args}"/>
+      <javac-elements/>
 
+    </javac>
 
-  <!--
-   ! Bootclasspath munging for testing, so JUnit can test our local
-   ! modifications to java.*.
-   -->
+    <java classname="${jsr166.tckTestClass}"
+          failonerror="true"
+          jvm="${java@{target}}"
+          fork="true">
+        <jvmarg value="--patch-module=java.base=@{classes}"/>
+        <jvmarg value="--add-opens=java.base/java.lang=ALL-UNNAMED"/>
+        <jvmarg value="--add-opens=java.base/java.util=ALL-UNNAMED"/>
+        <jvmarg value="--add-opens=java.base/java.util.concurrent=ALL-UNNAMED"/>
+        <jvmarg value="--add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED"/>
+        <jvmarg value="--add-opens=java.base/java.util.concurrent.locks=ALL-UNNAMED"/>
+        <jvmarg line="@{jvmflags}"/>
+        <!-- ant -Dvmoptions="-Xmx8m" -Djsr166.tckTestClass=CompletableFutureTest tck -->
+        <jvmarg line="${vmoptions}" if:set="vmoptions"/>
+
+        <!-- ant -Djava.util.concurrent.ForkJoinPool.common.parallelism=1 tck -->
+        <syspropertyset id="system-properties-used-by-tck">
+          <propertyref prefix="java.util.concurrent.ForkJoinPool"/>
+          <propertyref prefix="jsr166."/>
+          <propertyref name="test.timeout.factor"/>
+        </syspropertyset>
+
+        <classpath>
+          <pathelement location="${junit.jar}"/>
+          <pathelement location="@{workdir}/tck-classes"/>
+        </classpath>
+    </java>
+
+    </sequential>
+  </macrodef>
+
+  <!-- Define jtreg test sets for different jdk versions -->
+  <!-- ant -Djtreg.test.pattern="**/ConcurrentHashMap/" -->
+  <!-- ant -Djtreg.test.pattern="**/ToArray.java" -->
+  <property name="jtreg.test.pattern" value="**/*.java"/>
+  <macrodef name="defjtregtests">
+    <attribute name="v"/>
+    <sequential>
+      <fileset dir="${jtreg@{v}.src.dir}">
+        <patternset id="jdk@{v}.jtreg.tests">
+          <include name="${jtreg.test.pattern}"/>
+        </patternset>
+      </fileset>
+    </sequential>
+  </macrodef>
 
-  <path id="test.classpath">
-    <pathelement location="${product.jar}"/>
-    <pathelement location="${build.testcases.dir}"/>
-    <pathelement location="${junit.jar}"/>
+  <defjtregtests v="17"/>
+  <defjtregtests v="18"/>
+  <defjtregtests v="19"/>
+  <defjtregtests v="20"/>
+  <defjtregtests v="21"/>
+
+  <!-- ant -Djtreg.flags=-timeoutFactor:4 -->
+  <property name="jtreg.flags" value=""/>
+
+  <macrodef name="run-jtreg-tests">
+    <attribute name="target"/>
+    <attribute name="workdir"/>
+    <attribute name="classes"/>
+    <attribute name="verbose" default="${jtreg.verbose}"/>
+    <attribute name="jtregflags" default=""/>
+    <element name="jtreg-elements" optional="true"/>
+
+    <sequential>
+
+    <!-- ant -Djtreg.verbose=time,fail,error jtreg -->
+    <property name="jtreg.verbose" value="nopass,fail,error"/>
+
+    <!-- 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="-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="-automatic"/>
+      <arg value="-k:!ignore"/>
+      <arg line="@{jtregflags}"/>
+      <arg line="${jtreg.flags}"/>
+      <jtreg-elements/>
+    </jtreg>
+    </sequential>
+  </macrodef>
+
+  <!-- ALoops classpath -->
+  <path id="loops.classpath">
+    <pathelement location="${build.loops.dir}"/>
   </path>
 
-  <!-- Flatten test classpath into a platform-appropriate string -->
-  <property name="test.classpath" refid="test.classpath"/>
-
-  <!-- Turn the flattened test classpath into a javac argument -->
-  <property name="test.javac.args" value='-Xbootclasspath/p:${test.classpath}'/>
-
-
-
-  <!-- Files excluded from emulation and dist-docs -->
-  <patternset id="emulation.excludes">
-    <exclude name="java/util/Random.*"/>
-    <exclude name="sun/misc/Unsafe.*"/>
-  </patternset>
-
-
+  <!-- Support @jls tag, used in jdk8+ javadoc -->
+  <!-- TODO: switch to @jls taglet, as supported by jdk14+ javadoc -->
+  <property name="javadoc.jls.cite" value="The Java&amp;trade; Language Specification"/>
+  <property name="javadoc.jls.option" value="jls:a:See &lt;cite&gt;${javadoc.jls.cite}&lt;/cite&gt;:"/>
 
   <!-- Main targets -->
 
-  <target name="compile"
-          depends="init"
-          description="Compiles main sources to build folder">
+  <!-- Default values: may seem strange ... -->
+  <!-- At runtime, target latest, but build for current LTS -->
+  <property name="java.runtime.target" value="19"/>
+  <property name="build.main.java" value="${java17}"/>
+  <property name="build.main.javac" value="${javac17}"/>
+  <property name="build.main.javadoc" value="${javadoc19}"/>
+  <property name="build.main.javadoc.source" value="${java.runtime.target}"/>
+
+  <target name="dists"
+          depends="dist"
+          description="Builds all public jars and docs"/>
 
-    <mkdir dir="${build.classes.dir}"/>
+  <target name="compile"
+          depends="configure-compiler"
+          description="Compiles src/main sources to build dir">
 
-    <javac srcdir="${src.dir}"
-          destdir="${build.classes.dir}"
-            debug="${build.debug}"
-       debuglevel="${build.debuglevel}"
-      deprecation="${build.deprecation}"
-           source="${build.sourcelevel}"
-             fork="true">
+    <local name="destdir"/>
+    <property name="destdir" value="${build.classes.dir}/java.base"/>
 
-      <bootclasspath refid="javac.bootclasspath"/>
-      <compilerarg line="${javac.args} ${build.warnings.option}"/>
+    <mkdir dir="${destdir}"/>
 
+    <javac srcdir="${src.dir}"
+           destdir="${destdir}"
+           debug="${build.debug}"
+           debuglevel="${build.debuglevel}"
+           deprecation="${build.deprecation}"
+           classpath=""
+           includeAntRuntime="false"
+           includeJavaRuntime="false"
+           encoding="ASCII"
+           executable="${build.main.javac}"
+           fork="true">
+
+      <include name="**/*.java"/>
+      <compilerarg value="--patch-module=java.base=${src.dir}"/>
+      <compilerarg value="-Xprefer:source"/>
+      <compilerarg value="-XDignore.symbol.file=true"/>
+      <compilerarg value="-Xlint:all"/>
+      <compilerarg value="-Xdoclint:all/protected"/>
+      <compilerarg value="-Xdoclint/package:java.util.*"/>
+      <compilerarg value="-Werror"/>
+      <compilerarg line="-Xmaxerrs 1000 -Xmaxwarns 1000"/>
+      <compilerarg line="${build.args}"/>
     </javac>
-
   </target>
 
-
   <target name="jar"
-          depends="check-emulation, init-jar, native-jar, emulation-jar"
-          description="Builds library jar from compiled sources"/>
-
-
-  <target name="test"
-          depends="init, check-junit, report-tests"
-          description="Runs all tests (requires JUnit 3.8.1 in ${ant.home}/lib)" />
-
-
-  <target name="checkstyle"
-          depends="filter-src"
-          description="Reports on style errors in Java source (verbose, mostly chaff)">
-
-    <taskdef resource="checkstyletask.properties"
-            classpath="${lib.dir}/checkstyle-all-2.4.jar"/>
-
-    <checkstyle>
-      <formatter type="plain"/>  <!-- also available: type="xml" -->
-      <fileset dir="${build.filter.src.dir}" includes="**/*.java"/>
-    </checkstyle>
-
-  </target>
-
-
-  <target name="doccheck"
-          depends="filter-src"
-          description="Reports on javadoc style errors (not working yet)">
-
-    <delete dir="${build.doccheck.dir}"/>
-    <mkdir dir="${build.doccheck.dir}"/>
-
-    <javadoc doclet="com.sun.tools.doclets.doccheck.DocCheck"
-         docletpath="${lib.dir}/doccheck.jar"
-            destdir="${build.doccheck.dir}">
-      <packageset dir="${build.filter.src.dir}"/>
-    </javadoc>
-
+          depends="compile"
+          description="Builds library jar for src/main from compiled sources">
+    <local name="subdir"/>
+    <available property="subdir" file="${build.classes.dir}/java.base" type="dir" value="/java.base"/>
+    <jar destfile="${product.jar}">
+      <fileset dir="${build.classes.dir}${subdir}"/>
+      <manifest>
+        <attribute name="Built-By" value="${user.name}"/>
+        <attribute name="Implementation-Vendor" value="JCP JSR-166 Expert Group."/>
+      </manifest>
+    </jar>
   </target>
 
 
   <target name="docs"
-          depends="filter-src"
-          description="Builds javadocs with custom tags to build folder">
-
-    <delete dir="${build.javadocs.dir}"/>
-    <mkdir dir="${build.javadocs.dir}"/>
-
-    <javadoc destdir="${build.javadocs.dir}"
-                link="http://java.sun.com/j2se/1.4.1/docs/api"
-            overview="${src.dir}/intro.html"
-              source="${build.docsourcelevel}">
-
-      <tag name="revised" description="Last revised:"/>
-      <tag name="spec"    description="Specified by:"/>
-      <tag name="editor"  description="Last edited by:"/>
-      <tag name="fixme"   description="FIX ME:"/>
-
-      <packageset dir="${build.filter.src.dir}"/>
-
+          description="Builds javadocs for src/main to dist dir">
+    <delete dir="${docs.dir}" quiet="true"/>
+    <mkdir dir="${docs.dir}"/>
+    <javadoc destdir="${docs.dir}"
+             packagenames="none"
+             link="${java.api.url}"
+             overview="${src.dir}/intro.html"
+             access="${build.javadoc.access}"
+             sourcepath="${src.dir}"
+             classpath=""
+             source="${build.main.javadoc.source}"
+             executable="${build.main.javadoc}">
+      <fileset dir="${src.dir}" defaultexcludes="yes">
+        <include name="java/**/*.java"/>
+      </fileset>
+      <arg line="-Xdocrootparent ${java.docroot.url}"/>
+      <arg line="-Xmaxerrs 1000 -Xmaxwarns 1000"/>
+      <arg line="-Xmaxerrs 1000 -Xmaxwarns 1"/>
+      <arg value="-quiet"/>
+      <arg value="-XDignore.symbol.file=true"/>
+      <arg value="-html5"/>
+      <arg value="-Xdoclint:all,-missing"/>
+      <arg value="--patch-module=java.base=${src.dir}"/>
+      <arg value="--frames" if:set="use-frames"/>
+      <arg value="--override-methods=summary"/>
+      <arg value="-tag"/> <arg value="${javadoc.jls.option}"/>
+      <arg value="-tag"/> <arg value="implSpec:a:Implementation Requirements:"/>
+      <arg value="-tag"/> <arg value="implNote:a:Implementation Note:"/>
+      <arg value="-tag"/> <arg value="apiNote:a:API Note:"/>
     </javadoc>
-
   </target>
 
-
-  <!--
-   # javac -s doesn't reliably generate compilable code. It generates
-   # bridge methods (marked as "synthetic") that can have identical
-   # signatures to existing methods except for the return value.
-   -->
-  <target name="strip"
-          depends="init">
-
-    <mkdir dir="${build.stripped.dir}"/>
-
-    <javac srcdir="${src.dir}"
-          destdir="${build.stripped.dir}"
-            debug="${build.debug}"
-       debuglevel="${build.debuglevel}"
-      deprecation="${build.deprecation}"
-           source="${build.sourcelevel}"
-             fork="true">
-
-      <bootclasspath refid="javac.bootclasspath"/>
-      <compilerarg line="${javac.args} ${build.warnings.option} -s"/>
-
-    </javac>
-
-  </target>
-
-
   <target name="dist"
-          depends="init, dist-clean, dist-jar, dist-docs"
+          depends="dist-clean, dist-jar, dist-docs"
           description="Puts all distributable products in single hierarchy"/>
 
-
   <target name="clean"
           description="Removes all build products">
-
     <delete dir="${build.dir}"/>
-    <delete dir="${build.classes.dir}"/>
-    <delete dir="${build.lib.dir}"/>
-
   </target>
 
-
   <target name="dist-clean"
           description="Removes all build and distribution products">
-
+    <delete dir="${build.dir}"/>
     <delete dir="${dist.dir}"/>
-
-  </target>
-
-
-  <target name="dist-docs"
-          depends="filter-src"
-          description="Builds javadocs without custom tags to dist folder">
-
-    <delete dir="${dist.javadocs.dir}"/>
-    <mkdir dir="${dist.javadocs.dir}"/>
-
-    <javadoc destdir="${dist.javadocs.dir}"
-                link="http://java.sun.com/j2se/1.4.1/docs/api"
-            overview="${src.dir}/intro.html"
-              source="${build.docsourcelevel}">
-
-      <packageset dir="${build.filter.src.dir}"/>
-
-    </javadoc>
-
-  </target>
-
-
-
-  <!-- Internal targets -->
-
-  <target name="set-warnings-if" if="build.warnings">
-
-    <property name="build.warnings.option" value="-warnunchecked"/>
-
-  </target>
-
-
-  <target name="set-warnings-unless" unless="build.warnings">
-
-    <property name="build.warnings.option" value=""/>
-
-  </target>
-
-
-  <target name="init"
-          depends="set-warnings-if, set-warnings-unless">
-
-    <!-- Version is kept in a separate file -->
-    <loadfile property="version" srcFile="version.properties"/>
-    <echo>Building JSR-166 version ${version}</echo>
-
-  </target>
-
-
-  <target name="init-jar">
-
-    <mkdir dir="${build.lib.dir}"/>
-
-  </target>
-
-
-  <target name="native-jar"
-          depends="compile"
-          unless="build.emulation.true">
-
-    <jar destfile="${product.jar}">
-      <fileset dir="${build.classes.dir}"/>
-    </jar>
-
-  </target>
-
-
-  <target name="compile-emulation"
-          depends="init"
-          if="build.emulation.true">
-
-    <mkdir dir="${build.emulation.dir}"/>
-
-    <javac srcdir="${emulation.src.dir}"
-          destdir="${build.emulation.dir}"
-            debug="${build.debug}"
-       debuglevel="${build.debuglevel}"
-      deprecation="${build.deprecation}"
-           source="${build.sourcelevel}"
-             fork="true">
-
-      <bootclasspath refid="javac.bootclasspath"/>
-      <compilerarg line="${javac.args} ${build.warnings.option}"/>
-
-    </javac>
-
   </target>
 
-
-  <target name="emulation-jar"
-          depends="compile-emulation"
-          if="build.emulation.true">
-
-
-    <jar destfile="${product.jar}" duplicate="add">
-      <fileset dir="${build.classes.dir}">
-        <patternset refid="emulation.excludes"/>
-      </fileset>
-      <fileset dir="${build.emulation.dir}"/>
-    </jar>
-
-  </target>
-
-
   <target name="dist-jar"
           depends="clean, jar">
-
     <copy file="${product.jar}" todir="${dist.dir}"/>
-
   </target>
 
-
-  <target name="compile-ant-filter"
-          depends="init">
-
-    <mkdir dir="${build.ant.dir}"/>
-
-    <javac srcdir="${ant.src.dir}"
-          destdir="${build.ant.dir}"
-           source="1.4"
-    />
-
+  <target name="dist-docs"
+          depends="clean, docs">
+    <mirror-dir src="${docs.dir}" dst="${dist.docs.dir}"/>
   </target>
 
-
-  <target name="filter-src"
-          depends="compile-ant-filter">
-
-    <mkdir dir="${build.filter.src.dir}"/>
-
-    <copy todir="${build.filter.src.dir}">
-      <fileset dir="${src.dir}">
-        <patternset refid="emulation.excludes"/>
-      </fileset>
-      <filterchain>
-        <filterreader classname="jsr166.ant.filters.ReplaceFilter"
-                      classpath="${build.ant.dir}">
-          <!--
-           # These arguments are to get rid of angle-bracketed type
-           # parameters so that javadoc can run on the result. The
-           # following heuristic that seems to work:
-           #
-           # For all lines not starting with space(s)-asterisk-space(s),
-           #   replace <something> with a space, where there may be more
-           #   than one right angle bracket at the end, and "something"
-           #   must not contain parens or pipes. (This may need some
-           #   tweaking.)
-           -->
-          <param name="notmatching" value="^\s+\*\s.*$"/>
-          <param name="pattern" value="&lt;[^|>()]+?>+"/>
-          <param name="replacement" value=" "/>
-        </filterreader>
-        <filterreader classname="jsr166.ant.filters.ReplaceFilter"
-                      classpath="${build.ant.dir}">
-          <!--
-           # These arguments are to uncomment lines beginning with
-           # "//@" so that javadoc can see imports that are needed
-           # to resolve links but that shouldn't be in the compiled
-           # code.
-           -->
-          <param name="matching" value="^//@.*$"/>
-          <param name="pattern" value="^//@"/>
-          <param name="replacement" value=""/>
-        </filterreader>
-      </filterchain>
-    </copy>
-
+  <target name="tck"
+          depends="jar"
+          description="Runs tck tests for src/main directly">
+    <run-tck-tests
+      target="${java.runtime.target}"
+      workdir="${build.dir}"
+      classes="${product.jar}">
+      <javac-elements>
+        <!-- <compilerarg value="-Werror"/> -->
+      </javac-elements>
+    </run-tck-tests>
+  </target>
+
+  <target name="tck-parallelism-1"
+          description="Runs tck with common pool parallelism 1">
+    <antcall target="tck">
+      <param name="java.util.concurrent.ForkJoinPool.common.parallelism" value="1"/>
+    </antcall>
+  </target>
+
+  <target name="tck-parallelism-0"
+          description="Runs tck with common pool parallelism 0">
+    <antcall target="tck">
+      <param name="java.util.concurrent.ForkJoinPool.common.parallelism" value="0"/>
+    </antcall>
+  </target>
+
+  <target name="tck-security-manager"
+          description="Runs tck with a security manager">
+    <antcall target="tck">
+      <param name="jsr166.useSecurityManager" value="true"/>
+    </antcall>
+  </target>
+
+  <target name="jtreg"
+          depends="jar"
+          description="Runs jtreg tests for src/main using the jtreg ant task">
+    <run-jtreg-tests
+       target="${java.runtime.target}"
+       workdir="${build.dir}"
+       classes="${product.jar}"/>
   </target>
 
+  <target name="test"
+          depends="tck, tck-parallelism-1, tck-parallelism-0, jtreg"
+          description="Runs tck and jtreg tests for src/main"/>
 
-  <target name="compile-tests"
-          depends="jar">
-
-    <mkdir dir="${build.testcases.dir}"/>
-
-    <javac srcdir="${test.src.dir}"
-          destdir="${build.testcases.dir}"
-            debug="${build.debug}"
-       debuglevel="${build.debuglevel}"
-      deprecation="${build.deprecation}"
-           source="${build.sourcelevel}"
-             fork="true">
-
-      <bootclasspath refid="javac.bootclasspath"/>
-      <compilerarg line="${javac.args} ${build.warnings.option}"/>
-      <classpath refid="test.classpath"/>
-
-    </javac>
-
+  <target name="test-version-permutations"
+          depends="test17, test19, clean, test, docs"
+          description="Runs tck and jtreg tests for various build-time and runtime java versions"/>
+
+
+  <target name="test17">
+    <antcall>
+      <param name="java.runtime.target" value="17"/>
+      <param name="build.main.javac" value="${javac17}"/>
+      <param name="build.main.javadoc" value="${javadoc17}"/>
+      <param name="build.main.javadoc.source" value="17"/>
+      <target name="clean"/>
+      <target name="test"/>
+      <target name="docs"/>
+    </antcall>
+  </target>
+  <target name="test19">
+    <antcall>
+      <param name="java.runtime.target" value="19"/>
+      <param name="build.main.javac" value="${javac19}"/>
+      <param name="build.main.javadoc" value="${javadoc19}"/>
+      <param name="build.main.javadoc.source" value="19"/>
+      <target name="clean"/>
+      <target name="test"/>
+      <target name="docs"/>
+    </antcall>
   </target>
 
 
-  <target name="run-tests"
-          depends="compile-tests">
-
-    <!-- May be overridden by user.properties -->
-    <property name="testcase" value="*"/>
-
-    <mkdir dir="${build.reports.dir}"/>
-
-    <junit printsummary="true"
-             showoutput="true"
-          errorProperty="junit.failed"
-        failureProperty="junit.failed"
-                    dir="${build.reports.dir}"
-                   fork="true">
-
-      <jvmarg value="${test.javac.args}"/>
-
-      <formatter type="xml"/>
-
-      <batchtest todir="${build.reports.dir}">
-        <fileset dir="${test.src.dir}">
-          <include name="**/${testcase}Test.java"/>
-        </fileset>
-      </batchtest>
+  <target name="configure-compiler">
+    <fail message="ant version too old">
+      <condition> <not> <antversion atleast="1.9.1"/> </not> </condition>
+    </fail>
 
-    </junit>
-
-  </target>
+    <property name="unchecked.option" value="-Xlint:unchecked"/>
 
+    <condition property="warnunchecked.arg" value="${unchecked.option}">
+      <istrue value="${build.warnunchecked}"/>
+    </condition>
 
-  <target name="report-tests"
-          depends="run-tests">
+    <property name="warnunchecked.arg" value=""/>
 
-    <!-- Sets junit.report.format to frames if Xalan is present,
-         otherwise sets it to noframes. -->
-    <available property="junit.report.format"
-                  value="frames"
-              classname="org.apache.xalan.lib.Redirect"
-    />
-    <property name="junit.report.format" value="noframes"/>
-
-    <junitreport todir="${build.reports.dir}">
-      <fileset dir="${build.reports.dir}">
-        <include name="TEST-*.xml"/>
-      </fileset>
-      <report styledir="${stylesheet.dir}"
-                format="${junit.report.format}"
-                 todir="${build.reports.dir}"
-      />
-    </junitreport>
 
-    <fail message="Test Cases Failed" if="junit.failed"/>
+    <!-- Common options in javac invocations -->
+    <property name="build.args" value="${warnunchecked.arg}"/>
 
   </target>
 
 
-  <target name="check-junit">
+  <target name="compile-test-loops" depends="jar"
+          description="Compiles all the perf tests in src/test/loops">
 
-    <!-- junit.framework.Protectable is in JUnit 3.8.1 but not in 3.7 -->
-    <available property="junit.available"
-               classname="junit.framework.Protectable"/>
+    <mkdir dir="${build.dir}/test/loops"/>
 
-    <fail message="Need JUnit 3.8.1 in ${ant.home}${file.separator}lib to run tests"
-          unless="junit.available"/>
+    <javac srcdir="${basedir}/src/test/loops"
+           destdir="${build.dir}/test/loops"
+           debug="${build.debug}"
+           debuglevel="${build.debuglevel}"
+           deprecation="${build.deprecation}"
+           includeAntRuntime="false"
+           includeJavaRuntime="false"
+           encoding="ASCII"
+           executable="${build.main.javac}"
+           fork="true">
 
+      <include name="*.java"/>
+      <compilerarg value="-XDignore.symbol.file=true"/>
+      <compilerarg value="-Xlint:all,-unchecked,-rawtypes,-serial,-deprecation"/>
+      <compilerarg value="--patch-module=java.base=${src.dir}"/>
+      <compilerarg line="${build.args}"/>
+    </javac>
   </target>
 
 
-  <target name="check-emulation">
-    <condition property="build.emulation.true">
-      <or>
-        <isset property="build.emulation"/>
-        <os family="windows"/>
-      </or>
-    </condition>
+  <!-- old branches no longer maintained.  build support deleted -->
+  <!-- jsr166 4jdk8; (no longer maintained as of 2019-10) -->
+  <!-- jsr166 4jdk7 (no longer maintained) -->
+  <!-- jsr166x (no longer maintained) -->
+  <!-- jsr166y (no longer maintained) -->
+  <!-- extra166y (no longer maintained) -->
+  <!-- jsr166e (no longer maintained) -->
+
+<!-- Find buglets that can be detected by static build tools -->
+
+<!--   <target name="lint"> -->
+<!--     <antcall target="dists"> -->
+<!--       <param name="build.javadoc.access" value="protected"/> -->
+<!--     </antcall> -->
+<!--   </target> -->
+
+<!-- Generates all doclint warnings, even for private methods (rarely useful) -->
+  <target name="doclint-private">
+    <antcall target="dist">
+      <param name="build.javadoc.access" value="private"/>
+    </antcall>
   </target>
 
 
+<!-- ==============================================================
+  Experimental errorprone support
+  https://errorprone.info
+  https://errorprone.info/docs/installation
+  https://github.com/google/error-prone/issues/1143
+=================================================================== -->
+  <path id="errorprone.processorpath.path">
+    <pathelement location="${lib.dir}/error_prone_core-2.3.4-with-dependencies.jar"/>
+    <pathelement location="${lib.dir}/dataflow-2.5.7.jar"/>
+    <pathelement location="${lib.dir}/javacutil-2.5.7.jar"/>
+    <pathelement location="${lib.dir}/jFormatString-3.0.0.jar"/>
+    <pathelement location="${lib.dir}/caffeine-2.8.0.jar"/>
+  </path>
+  <property name="errorprone.processorpath" refid="errorprone.processorpath.path" />
+  <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
+                   -Xep:ThreadPriorityCheck:OFF
+                   -Xep:MixedArrayDimensions:ERROR
+                   -Xep:RemoveUnusedImports:ERROR
+                   -Xep:EmptyIf:ERROR
+                   -Xep:MultipleTopLevelClasses:ERROR
+                   -Xep:ClassName:ERROR
+                   -Xep:LongLiteralLowerCaseSuffix:ERROR
+                   -Xep:RedundantThrows:ERROR
+                   -Xep:IdentityBinaryExpression:WARN
+                   -Xep:ConstructorInvokesOverridable:WARN
+                   -Xep:MethodCanBeStatic:WARN
+                   ${errorprone.jsr166.user.flags}"/>
+  <!-- -Xep:WildcardImport:ERROR -->
+  <property name="errorprone.jsr166.test.flags"
+            value="-Xep:StringSplitter:OFF
+                   -Xep:BoxedPrimitiveConstructor:OFF
+                   -Xep:UnnecessaryParentheses:OFF
+                   -Xep:ModifyingCollectionWithItself:OFF"/>
+  <!-- ant -emacs errorprone |& grep -EA1 '(warning|error):|warnings' -->
+  <target name="errorprone"
+          depends="clean, configure-compiler"
+          description="Run errorprone over jsr166 source code (experimental)">
+
+    <local name="destdir"/>
+    <property name="destdir" value="${build.classes.dir}/java.base"/>
+    <mkdir dir="${destdir}"/>
 
-  <!-- Anthill targets -->
-
-  <target name="anthill-build"
-          depends="jar, test, docs, dist-docs"/>
-
-  <target name="anthill-publish">
-
-    <copy todir="${deployDir}/docs/private">
-      <fileset dir="${build.javadocs.dir}"/>
-    </copy>
-
-    <copy todir="${deployDir}/docs/public">
-      <fileset dir="${dist.javadocs.dir}"/>
-    </copy>
+    <javac srcdir="${src.dir}"
+           destdir="${destdir}"
+           debug="${build.debug}"
+           debuglevel="${build.debuglevel}"
+           deprecation="${build.deprecation}"
+           classpath=""
+           includeAntRuntime="false"
+           includeJavaRuntime="false"
+           encoding="ASCII"
+           executable="${build.main.javac}"
+           fork="true">
+
+      <include name="**/*.java"/>
+      <!-- Needed to silence -Xep:FutureReturnValueIgnored -->
+      <compilerarg value="-J--illegal-access=permit"/>
+      <compilerarg value="-XDcompilePolicy=simple"/>
+      <compilerarg value="-processorpath"/>
+      <compilerarg pathref="errorprone.processorpath.path"/>
+      <compilerarg value="-Xplugin:ErrorProne
+                          ${errorprone.jsr166.flags}"/>
+      <compilerarg value="--patch-module=java.base=${src.dir}"/>
+      <compilerarg value="-Xprefer:source"/>
+      <compilerarg value="-XDignore.symbol.file=true"/>
+      <compilerarg value="-Xlint:all"/>
+      <compilerarg value="-Xdoclint:all/protected,reference/private"/>
+      <!--      <compilerarg line="-Xmaxerrs 3000 -Xmaxwarns 3000"/> -->
+      <compilerarg line="-Xmaxerrs 3000 -Xmaxwarns 1"/>
+      <compilerarg line="${build.args}"/>
+    </javac>
 
-    <copy tofile="${deployDir}/index.html"
-          file="${basedir}/etc/anthill-index.html"/>
+    <jar destfile="${product.jar}">
+      <fileset dir="${destdir}"/>
+    </jar>
 
-    <copy todir="${deployDir}/notes">
-      <fileset dir="${basedir}/etc/notes"/>
-    </copy>
+    <run-tck-tests
+      target="${java.runtime.target}"
+      workdir="${build.dir}"
+      classes="${product.jar}">
+      <javac-elements>
+        <!-- Needed to silence -Xep:FutureReturnValueIgnored -->
+        <compilerarg value="-J--illegal-access=permit"/>
+        <compilerarg value="-XDcompilePolicy=simple"/>
+        <compilerarg line="-processorpath ${errorprone.processorpath}"/>
+        <compilerarg value="-Xplugin:ErrorProne
+                            ${errorprone.jsr166.flags}
+                            ${errorprone.jsr166.test.flags}"/>
+        <!--      <compilerarg line="-Xmaxerrs 3000 -Xmaxwarns 3000"/> -->
+        <compilerarg line="-Xmaxerrs 3000 -Xmaxwarns 1"/>
+      </javac-elements>
+    </run-tck-tests>
+  </target>
+
+  <!-- ant -emacs errorprone-jtreg |& grep -EA1 '(warning|error):' -->
+  <!-- -XDcompilePolicy=simple or byfile avoids confusing UnusedImports -->
+  <target name="errorprone-jtreg"
+          depends="jar"
+          description="Run errorprone over jtreg tests (experimental)">
+
+    <run-jtreg-tests
+       target="${java.runtime.target}"
+       workdir="${build.dir}"
+       classes="${product.jar}"
+       verbose="all">
+      <jtreg-elements>
+        <arg value="-javacoption:-XDcompilePolicy=simple"/>
+        <arg value="-javacoption:-processorpath"/>
+        <arg value="-javacoption:${errorprone.processorpath}"/>
+        <arg value="-javacoption:-Xplugin:ErrorProne
+                            ${errorprone.jsr166.flags}
+                            ${errorprone.jsr166.test.flags}
+                            -Xep:MultipleTopLevelClasses:WARN
+                            -Xep:NonAtomicVolatileUpdate:OFF"/>
+      </jtreg-elements>
+    </run-jtreg-tests>
+  </target>
+
+
+<!-- ==============================================================
+  Running guava tests against jsr166 code
+=================================================================== -->
+
+<!-- <ivy:cachepath pathid="lib.path.id" inline="true" conf="*" -->
+<!--   organisation="com.google.guava" module="guava-testlib" revision="21.0"/> -->
+<!-- <property name="guava.version" value="21.0"/> -->
+
+<!-- HOWTO debug print a path id -->
+<!-- <pathconvert property="guava.testlib.classpath" refid="guava.testlib.classpath" /> -->
+<!-- <echo message="guava.testlib.classpath=${guava.testlib.classpath}"/> -->
+
+<!-- <ivy:retrieve pathid="guava.tests.classpath" type="jar" inline="true" conf="*" pattern="${lib.dir}/[type]/[artifact].[ext]" -->
+<!--   organisation="com.google.guava" module="guava-tests"/> -->
+<!-- <get src="http://repo2.maven.org/maven2/com/google/guava/guava-tests/${guava.version}/guava-tests-${guava.version}-tests.jar" -->
+<!--   dest="${lib.dir}/jar/guava-tests-tests.jar" usetimestamp="true"/> -->
+<!--     <ivy:cachepath pathid="lib.path.id" inline="true" conf="*" type="*" -->
+<!--       organisation="com.google.guava" module="guava-testlib" revision="${guava.version}"/> -->
+
+<!-- <test name="com.google.common.collect.testing.TestsForQueuesInJavaUtil"/> -->
+<!-- <test name="com.google.common.collect.testing.TestsForListsInJavaUtil"/> -->
+<!-- <test name="com.google.common.collect.testing.TestsForSetsInJavaUtil"/> -->
+<!-- <test name="com.google.common.collect.testing.TestsForMapsInJavaUtil"/> -->
+
+<!-- <ivy:retrieve pathid="guava.testlib.classpath" -->
+<!--   type="*" inline="true" conf="*(private),*(public)" -->
+<!--   pattern="${guava.dir}/[artifact].[ext]" -->
+<!--   organisation="com.google.guava" module="guava-testlib"/> -->
+
+<!-- Work around bug below by downloading guava-testlib-tests.jar "by hand": -->
+<!-- https://issues.apache.org/jira/browse/IVY-1444 -->
+<!-- maven tests artifacts cannot be downloaded because they are mapped to private configurations -->
+
+  <target name="init-ivy">
+    <get src="http://repo2.maven.org/maven2/org/apache/ivy/ivy/2.4.0/ivy-2.4.0.jar"
+         dest="${build.dir}/ivy.jar" usetimestamp="true" skipexisting="true"/>
+    <taskdef resource="org/apache/ivy/ant/antlib.xml" uri="antlib:org.apache.ivy.ant"
+             classpath="${build.dir}/ivy.jar"/>
+  </target>
+
+  <target name="guava-tests" depends="jar, init-ivy"
+          description="Guava tests run against jsr166 collections">
+    <property name="guava.dir" value="${build.dir}/guava-testlib"/>
+    <mkdir dir="${guava.dir}"/>
+    <ivy:retrieve pathid="guava.testlib.classpath"
+      type="jar,bundle" inline="true" conf="default,master"
+      pattern="${guava.dir}/[artifact].[ext]"
+      organisation="com.google.guava" module="guava-testlib"/>
+    <property name="guava.version" value="21.0"/>
+    <get src="http://repo2.maven.org/maven2/com/google/guava/guava-testlib/${guava.version}/guava-testlib-${guava.version}-tests.jar"
+         dest="${guava.dir}/guava-testlib-tests.jar" usetimestamp="true"/>
+    <junit printsummary="true" showoutput="true" haltonfailure="true"
+           jvm="${build.main.java}" fork="true">
+      <jvmarg line="-ea -esa --patch-module=java.base=${product.jar}"/>
+      <formatter type="brief"/>
+      <classpath>
+        <pathelement location="${guava.dir}/guava-testlib-tests.jar"/>
+        <path refid="guava.testlib.classpath"/>
+      </classpath>
 
+      <!-- "6" in "OpenJdk6Tests" misleadingly means "6+" -->
+      <test name="com.google.common.collect.testing.OpenJdk6Tests"/>
+    </junit>
   </target>
 
-
 </project>