Merge branch 'sessions' into 'devel'

Session support

See merge request !3

.classpath

@@ -5,6 +5,26 @@
 	<classpathentry kind="src" output="output/build/util" path="src-util"/>
 	<classpathentry kind="src" output="output/build/test" path="src-test"/>
 	<classpathentry kind="src" output="output/build/shvm-dispatch" path="src-shvm-dispatch"/>
+	<classpathentry kind="src" path="disl/src/src-classparser"/>
+	<classpathentry kind="src" path="disl/src/src-exception"/>
+	<classpathentry kind="src" path="disl/src/src-main"/>
+	<classpathentry kind="src" path="disl/src/src-resolver"/>
+	<classpathentry kind="src" path="disl/src/src-coderep"/>
+	<classpathentry kind="src" path="disl/src/src-util"/>
+	<classpathentry kind="src" path="disl/src/src-snippet"/>
+	<classpathentry kind="src" path="disl/src/src-processor"/>
+	<classpathentry kind="src" path="disl/src/src-guard"/>
+	<classpathentry kind="src" path="disl/src/src-localvar"/>
+	<classpathentry kind="src" path="disl/src/src-scope"/>
+	<classpathentry kind="src" path="disl-server/src"/>
+	<classpathentry kind="src" path="disl/src/src-staticcontext"/>
+	<classpathentry kind="src" path="disl/src/src-staticcontext-uid"/>
+	<classpathentry kind="src" path="disl/src/src-marker"/>
+	<classpathentry kind="src" path="disl/src/src-weaver"/>
+	<classpathentry kind="src" path="disl/src/src-weaver-pe"/>
+	<classpathentry kind="src" path="disl/src/src-annotation"/>
+	<classpathentry kind="src" path="disl/src/src-context"/>
+	<classpathentry kind="src" path="disl/src-test"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
 	<classpathentry kind="lib" path="output/lib/disl-bypass.jar"/>
 	<classpathentry kind="lib" path="lib/disl/log4j.jar" sourcepath="lib/devel/log4j-source.jar"/>

.gitignore

@@ -5,6 +5,17 @@ src-disl-agent/windows-*
 
 # Compiled shared libraries
 *.so
+*.jnilib
+
+# Compiled object files
+*.o
+
+# Compiled examples
+examples/**/*.class
+examples/**/*.jar
+
+# Logs
+*.log
 
 # Anything in the output
 output/*

bin/disl.py

@@ -424,7 +424,7 @@ def run_server(args, parser):
 
 	s_cmd = ["java"]
 	s_cmd+= args.s_opts
-	s_cmd+= ["-cp", args.instrumentation + ":" + s_jar]
+	s_cmd+= ["-cp", args.instrumentation + ":" + s_jar + ":" + args.disl_home+"/lib/dislre-server.jar"]
 	s_cmd+= [s_class]
 	s_cmd+= args.s_args
 
@@ -485,6 +485,7 @@ def run_client(args, parser):
 	c_cmd = ["java"]
 	c_cmd+= args.c_opts
 	c_cmd+= ["-agentpath:"+cagent]
+	c_cmd+= ["-Ddisl.instrumentation="+args.instrumentation]
 	
 	if args.cse == True:
 		c_cmd+= ["-agentpath:"+eagent]

build.properties

-lib.dir=lib
-lib.ant.dir=${lib.dir}/ant
-lib.disl.dir=${lib.dir}/disl
-lib.test.dir=${lib.dir}/test
-lib.devel.dir=${lib.dir}/devel
-
-src.bin=bin
-src.disl=src-disl
 src.disl.bypass=src-disl-bypass
 src.disl.agent=src-disl-agent
 src.shvm=src-shvm
@@ -20,40 +12,9 @@ src.doc.intro=${src.doc}/intro
 src.examples=examples
 
 
-# Base output directory
-out.dir=output
-
-
-# Directories for build artifacts
-build.dir=${out.dir}/build
-build.util=${build.dir}/util
-build.tools=${build.dir}/tools
-build.disl=${build.dir}/disl
-build.disl.thread=${build.disl}-thread
-build.disl.bypass=${build.disl}-bypass
-build.shvm=${build.dir}/shvm
-build.shvm.dispatch=${build.shvm}-dispatch
-build.test=${build.dir}/test
-build.doc.intro=${build.dir}/intro
-
-# Build system libraries
-build.ivy.url = http://central.maven.org/maven2/org/apache/ivy/ivy/${ivy.rev}/ivy-${ivy.rev}.jar
-build.ivy.path = ${lib.ant.dir}/ivy.jar
-build.ivy.file = dependencies.xml
-
-build.artifacts.list = ${lib.dir}/artifacts.lst
-
-
-# Directories for output artifacts
-out.lib=${out.dir}/lib
-out.src=${out.dir}/src
-out.test=${out.dir}/test
-out.junit=${out.dir}/junit
-out.doc.jdoc=${out.dir}/jdoc
 
 
 # Output library artifact names
-disl.lib=disl-server.jar
 disl.bypass.lib=disl-bypass.jar
 disl.agent.lib.base=dislagent
 

build.xml

@@ -6,7 +6,7 @@
 
 	<property name="build.sysclasspath" value="ignore"/>
 
-	<property file="disl.version"/>
+	<property file="disl.version.properties"/>
 
 	<property file="dependencies.local.properties"/>
 	<property file="dependencies.properties"/>
@@ -14,6 +14,8 @@
 	<property file="build.local.properties"/>
 	<property file="build.properties"/>
 
+	<property file="common.properties" />
+
 
 	<!-- ================================================================== -->
 	<!-- IVY SETUP & TASKS                                                  -->
@@ -264,7 +266,11 @@
 		</path>
 
 		<path id="disl.classpath">
-			<pathelement location="${build.disl}"/>
+			<pathelement location="${src.disl.prefix}/${build.disl}"/>
+		</path>
+
+		<path id="disl-server.classpath">
+			<pathelement location="${src.disl-server.prefix}/${build.disl-server}"/>
 		</path>
 
 		<path id="disl.bypass.classpath">
@@ -473,38 +479,17 @@
 	<!-- DiSL -->
 
 	<target name="compile-disl" depends="compile-util,compile-disl-bypass">
-		<mkdir dir="${build.disl}"/>
-		<javac destdir="${build.disl}" srcdir="${src.disl}" debug="true">
-			<classpath>
-				<path refid="disl.bypass.classpath"/>
-				<path refid="util.classpath"/>
-				<path refid="asm.classpath"/>
-				<path refid="protobuf.classpath"/>
-			</classpath>
-		</javac>
+		<ant antfile="${src.disl.prefix}/build.xml" target="compile" usenativebasedir="true"/>
 	</target>
 
+	<target name="compile-disl-server" depends="compile-disl">
+		<ant dir="${src.disl-server.prefix}" target="compile"/>
+	</target>
 
-	<target name="build-disl" depends="compile-disl,build-disl-bypass">
-		<local name="server.class"/>
-		<find-class property="server.class" dir="${build.disl}" name="DiSLServer"/>
-
-		<local name="classfinder.class"/>
-		<find-class property="classfinder.class" dir="${build.disl}" name="DislClassFinder"/>
-
-		<jar destfile="${out.lib}/${disl.lib}">
-			<manifest>
-				<attribute name="Class-Path" value="${asm.libs} ${protobuf.libs}"/>
-				<attribute name="Main-Class" value="${server.class}"/>
-				<attribute name="DiSL-Version" value="${disl.version}"/>
-			</manifest>
-
-			<service type="javax.annotation.processing.Processor" provider="${classfinder.class}"/>
 
-			<fileset dir="${build.util}"/>
-			<fileset dir="${build.disl}"/>
-			<resources refid="disl.bypass.files"/>
-		</jar>
+	<target name="build-disl" depends="compile-disl,build-disl-bypass">
+		<ant dir="${src.disl-server.prefix}" target="build" />
+		<copy file="${src.disl-server.prefix}/${out.lib}/${disl.lib}" tofile="${out.lib}/${disl.lib}" />
 	</target>
 
 
@@ -518,7 +503,7 @@
 	<target name="-check-disl-agent-codeflags">
 		<property name="build.disl.agent.codeflags.path" value="${src.disl.agent}/codeflags.h"/>
 		<uptodate property="build.disl.agent.codeflags.uptodate" targetfile="${build.disl.agent.codeflags.path}">
-			<srcfiles dir="${src.disl}" includes="**/DiSL.java"/>
+			<srcfiles dir="${src.disl.prefix}/src" includes="**/DiSL.java"/>
 		</uptodate>
 	</target>
 
@@ -528,7 +513,7 @@
 
 	<target name="-generate-disl-agent-codeflags" depends="compile-disl">
 		<local name="flags.class"/>
-		<find-class property="flags.class" dir="${build.disl}" name="*CodeOption$Flag"/>
+		<find-class property="flags.class" dir="${src.disl.prefix}/${build.disl}" name="*CodeOption$Flag"/>
 
 		<javah outputFile="${build.disl.agent.codeflags.path}" force="yes">
 			<class name="${flags.class}"/>
@@ -691,6 +676,7 @@
 	<path id="test.classpath">
 		<path refid="util.classpath"/>
 		<path refid="disl.classpath"/>
+		<path refid="disl-server.classpath"/>
 		<path refid="shvm.classpath"/>
 		<path refid="junit.classpath"/>
 		<path refid="asm.classpath"/>
@@ -772,7 +758,7 @@
 			<tempfile property="classfinder.output" prefix="@{name}-disl-classes-" suffix=".lst" destDir="${out.dir}" createFile="true" deleteOnExit="true"/>
 
 			<local name="classfinder.class"/>
-			<find-class property="classfinder.class" dir="${build.disl}" name="DislClassFinder"/>
+			<find-class property="classfinder.class" dir="${src.disl.prefix}/${build.disl}" name="DislClassFinder"/>
 
 			<mkdir dir="${out.dir}/empty"/>
 			<javac srcdir="${src.test}" destDir="${out.dir}/empty">
@@ -800,8 +786,12 @@
 		</sequential>
 	</macrodef>
 
+	<!-- Run nested instrumentation library tests -->
+	<target name="disl-test">
+		<ant antfile="${src.disl.prefix}/build.xml" target="test" usenativebasedir="true"/>
+	</target>
 
-	<target name="test" depends="build,build-test" description="Runs all tests or a selected (-Dtest.name=...) test suite.">
+	<target name="test" depends="build,build-test,disl-test" description="Runs all tests or a selected (-Dtest.name=...) test suite.">
 		<!--
 			If test.name is set to a name of a test suite, only include the test suite
 			in the batch of tests to be run, otherwise include all tests and suites.
@@ -838,7 +828,8 @@
 				<path refid="junit.classpath"/>
 				<pathelement location="${build.test}"/>
 				<pathelement location="${build.util}"/>
-				<pathelement location="${build.disl}"/>
+				<pathelement location="${src.disl-server.prefix}/${build.disl-server}" />
+				<pathelement location="${src.disl.prefix}/${build.disl}"/>
 				<pathelement location="${build.shvm}"/>
 			</classpath>
 
@@ -935,11 +926,11 @@
 			source="1.8"
 		>
 			<sourcepath>
-				<pathelement path="${src.disl}"/>
+				<pathelement path="${src.disl.prefix}/src"/>
 			</sourcepath>
 
 			<sourcefiles>
-				<fileset dir="${src.disl}">
+				<fileset dir="${src.disl.prefix}/src">
 					<include name="**/DiSL.java"/>
 					<include name="**/Reflection.java"/>
 					<include name="**/Scope.java"/>
@@ -969,14 +960,6 @@
 				<path refid="util.classpath"/>
 				<path refid="asm.classpath"/>
 			</classpath>
-
-			<package name="ch.usi.dag.disl.annotation"/>
-			<package name="ch.usi.dag.disl.marker"/>
-			<package name="ch.usi.dag.disl.guardcontext"/>
-			<package name="ch.usi.dag.disl.staticcontext"/>
-			<package name="ch.usi.dag.disl.dynamiccontext"/>
-			<package name="ch.usi.dag.disl.classcontext"/>
-			<package name="ch.usi.dag.disl.processorcontext"/>
 		</javadoc>
 	</target>
 
@@ -993,7 +976,7 @@
 
 	<target name="package-src">
 		<zip destfile="${out.src}/src.zip">
-			<zipfileset dir="${src.disl}"/>
+			<zipfileset dir="${src.disl.prefix}/src"/>
 			<zipfileset dir="${src.disl.bypass}/dynamic"/>
 			<zipfileset dir="${src.shvm}"/>
 			<zipfileset dir="${src.shvm.dispatch}"/>
@@ -1083,8 +1066,16 @@
 		<ant dir="${src.examples}" target="clean"/>
 	</target>
 
+	<target name="clean-disl">
+		<ant dir="${src.disl.prefix}" target="clean" />
+	</target>
+
+	<target name="clean-disl-server">
+		<ant dir="${src.disl-server.prefix}" target="clean" />
+	</target>
+
 
-	<target name="clean" description="Removes all files produced during the build.">
+	<target name="clean" depends="clean-disl, clean-disl-server" description="Removes all files produced during the build.">
 		<exec executable="make" dir="${src.disl.agent}">
 			<arg value="cleanall"/>
 		</exec>

common.properties

+#
+# Build properties common for the main project and all subprojects.
+#
+lib.dir=lib
+lib.ant.dir=${lib.dir}/ant
+lib.disl.dir=${lib.dir}/disl
+lib.test.dir=${lib.dir}/test
+lib.devel.dir=${lib.dir}/devel
+
+build.artifacts.list = ${lib.dir}/artifacts.lst
+
+# Build system libraries
+build.ivy.url = http://central.maven.org/maven2/org/apache/ivy/ivy/${ivy.rev}/ivy-${ivy.rev}.jar
+build.ivy.path = ${lib.ant.dir}/ivy.jar
+build.ivy.file = dependencies.xml
+
+
+src.bin=bin
+src.disl.prefix=disl
+src.disl-server.prefix=disl-server
+
+disl.lib=disl-server.jar
+
+# Base output directory
+out.dir=output
+
+# Directories for output artifacts
+out.lib=${out.dir}/lib
+out.src=${out.dir}/src
+out.test=${out.dir}/test
+out.junit=${out.dir}/junit
+out.doc.jdoc=${out.dir}/jdoc
+
+
+# Directories for build artifacts
+build.dir=${out.dir}/build
+build.util=${build.dir}/util
+build.tools=${build.dir}/tools
+build.disl=${build.dir}/disl
+build.disl-server=${build.dir}/disl-server
+build.disl.thread=${build.disl}-thread
+build.disl.bypass=${build.disl}-bypass
+build.shvm=${build.dir}/shvm
+build.shvm.dispatch=${build.shvm}-dispatch
+build.test=${build.dir}/test
+build.doc.intro=${build.dir}/intro
+
+

disl-server/.gitignore

+output

disl-server/README.md

+# DiSL instrumentation server

disl-server/build.xml

+<project name="disl-server" default="build" basedir=".">
+
+    <!--
+     Import required property files.
+     -->
+    <property file="../common.properties"/>
+    <property file="build.properties" />
+    <property file="../disl.version.properties" />
+
+    <!--
+    Initialize the build directory
+    -->
+    <target name="init">
+        <mkdir dir="${build.disl-server}" />
+    </target>
+
+    <!--
+    Dependency class paths
+    -->
+    <path id="asm.classpath">
+        <fileset dir="../${lib.disl.dir}" includes="asm*.jar" id="asm.fileset"/>
+    </path>
+    <path id="util.classpath">
+        <pathelement location="../${build.util}"/>
+    </path>
+
+    <path id="protobuf.classpath">
+        <fileset dir="../${lib.disl.dir}" includes="protobuf*.jar"/>
+    </path>
+
+    <!--
+    Refer to the parent targets
+    -->
+    <target name="compile-util">
+        <ant antfile="../build.xml" target="compile-util" usenativebasedir="true" />
+    </target>
+
+    <target name="compile-disl">
+        <ant antfile="../build.xml" target="compile-disl" usenativebasedir="true" />
+    </target>
+
+    <target name="build-disl-bypass">
+        <ant antfile="../build.xml" target="build-disl-bypass" usenativebasedir="true" />
+    </target>
+
+    <!-- DiSL Server -->
+    <target name="compile" depends="compile-util,init, compile-disl">
+        <javac destdir="${build.disl-server}" debug="true" srcdir="src/">
+            <classpath>
+                <path path="../${src.disl.prefix}/${build.disl}" />
+                <path refid="util.classpath"/>
+                <path refid="protobuf.classpath"/>
+            </classpath>
+        </javac>
+    </target>
+
+
+    <union id="disl.bypass.files">
+        <fileset dir="../${build.disl.bypass}/always" includes="**/BypassCheck.class"/>
+        <fileset dir="../${build.disl.bypass}/dynamic" includes="**/DynamicBypass.class"/>
+    </union>
+
+    <!-- Get ASM libs from ASM class path. -->
+    <pathconvert pathsep=" " property="asm.libs" refid="asm.classpath">
+        <mapper type="flatten"/>
+    </pathconvert>
+
+    <!-- Get ProtoBuf Java libs from ProtoBuf class path. -->
+    <pathconvert pathsep=" " property="protobuf.libs" refid="protobuf.classpath">
+        <mapper type="flatten"/>
+    </pathconvert>
+
+    <target name="build" depends="compile, build-disl-bypass">
+
+        <jar destfile="${out.lib}/${disl.lib}">
+            <manifest>
+                <attribute name="Class-Path" value="${asm.libs} ${protobuf.libs}"/>
+                <attribute name="Main-Class" value="ch.usi.dag.dislserver.DiSLServer"/>
+                <attribute name="DiSL-Version" value="${disl.version}"/>
+            </manifest>
+
+            <service type="javax.annotation.processing.Processor" provider="ch.usi.dag.disl.DislClassFinder"/>
+
+            <fileset dir="${build.disl-server}" />
+            <fileset dir="../${build.util}"/>
+            <fileset dir="../${src.disl.prefix}/${build.disl}"/>
+            <resources refid="disl.bypass.files"/>
+        </jar>
+    </target>
+
+    <!--
+    Clean the build directory
+    -->
+    <target name="clean">
+        <delete dir="output" />
+    </target>
+
+</project>

disl-server/src/ch/usi/dag/dislserver/ConnectionHandler.java

+/*
+ * Handle the connection from a client.
+ *
+ * File: ConnectionHandler.java
+ * Created by Vit Kabele <vit@kabele.me> on 16/10/2018
+ */
+
+package ch.usi.dag.dislserver;
+
+import ch.usi.dag.dislserver.Protocol.*;
+import ch.usi.dag.util.logging.Logger;
+import com.google.protobuf.CodedInputStream;
+import com.google.protobuf.CodedOutputStream;
+
+import java.io.EOFException;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.channels.SocketChannel;
+
+
+/**
+ * Handle one connection to the client.
+ */
+final class ConnectionHandler implements Runnable {
+
+    /**
+     * Socket to the client.
+     */
+    private final SocketChannel __clientSocket;
+
+    /**
+     * Related server thread.
+     */
+    private final Thread __serverThread;
+
+    /**
+     * Related server
+     */
+    private final DiSLServer __server;
+
+    private final Logger __log = Logging.getPackageInstance ();
+
+
+    /**
+     * Constructs new instance of class.
+     * @param server Related server
+     * @param clientSocket Socket to the client
+     * @param serverThread Server thread
+     */
+    ConnectionHandler (
+        final DiSLServer server,
+        final SocketChannel clientSocket,
+        final Thread serverThread
+    ) {
+        __server = server;
+        __clientSocket = clientSocket;
+        __serverThread = serverThread;
+    }
+
+
+    /**
+     * Main method
+     */
+    @Override
+    public void run () {
+        __server.__workerCount.incrementAndGet ();
+
+        final CounterSet<DiSLServer.ElapsedTime> stats = new CounterSet<DiSLServer.ElapsedTime> (
+            DiSLServer.ElapsedTime.class);
+        final IntervalTimer<DiSLServer.ElapsedTime> timer = new IntervalTimer<DiSLServer.ElapsedTime> (
+            DiSLServer.ElapsedTime.class);
+
+        try {
+            //
+            // Process requests until a shutdown request is received, a
+            // communication error occurs, or an internal error occurs.