Initial load
diff --git a/test/java/lang/System/Available.java b/test/java/lang/System/Available.java
new file mode 100644
index 0000000..beff558
--- /dev/null
+++ b/test/java/lang/System/Available.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright 1998 Sun Microsystems, Inc. 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * This class tests to see if System.in.available starts
+ * with an appropriate value
+ *
+ * @test
+ * @bug 4104888
+ * @summary Test for System.in.available
+ */
+
+public class Available {
+ public static void main(String args[]) throws Exception {
+ int bytesAvailable = System.in.available();
+ if (bytesAvailable != 0)
+ throw new RuntimeException("System.in.available returned non-zero");
+ }
+}
diff --git a/test/java/lang/System/ExitFinalizersAndJIT.java b/test/java/lang/System/ExitFinalizersAndJIT.java
new file mode 100644
index 0000000..619b036
--- /dev/null
+++ b/test/java/lang/System/ExitFinalizersAndJIT.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright 1998-2007 Sun Microsystems, Inc. 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/* @test
+ @bug 4119554
+ @summary runFinalizersOnExit(true) causes JIT to be unloaded and
+ crashes the VM. Interim fix for 1.2 beta4 -- don't unload
+ native libraries loaded by system classes.
+*/
+
+public class ExitFinalizersAndJIT {
+ public static void main(String[] args) throws Exception {
+ System.runFinalizersOnExit(true);
+ }
+}
diff --git a/test/java/lang/System/IHashCode.java b/test/java/lang/System/IHashCode.java
new file mode 100644
index 0000000..d90ebc7
--- /dev/null
+++ b/test/java/lang/System/IHashCode.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright 1999 Sun Microsystems, Inc. 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/**
+ * @test
+ * @bug 4228188
+ * @summary test System.identityHashCode(null)
+ */
+
+public class IHashCode {
+ public static void main (String argv[]) throws Exception {
+ int test = System.identityHashCode(null);
+ if (test != 0)
+ throw new RuntimeException("identityHashCode(null) is "+test);
+ }
+}
diff --git a/test/java/lang/System/IgnoreNullSecurityManager.java b/test/java/lang/System/IgnoreNullSecurityManager.java
new file mode 100644
index 0000000..949ef29
--- /dev/null
+++ b/test/java/lang/System/IgnoreNullSecurityManager.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright 1999 Sun Microsystems, Inc. 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug 4213876
+ * @summary Make sure "null" security manager is ignored, as specified in the
+ * javadocs
+ */
+
+public class IgnoreNullSecurityManager {
+
+ public static void main(String argv[]) throws Exception {
+ System.setSecurityManager(null);
+ }
+}
diff --git a/test/java/lang/System/SecurityRace.java b/test/java/lang/System/SecurityRace.java
new file mode 100644
index 0000000..c563d34
--- /dev/null
+++ b/test/java/lang/System/SecurityRace.java
@@ -0,0 +1,202 @@
+/*
+ * Copyright 2005 Sun Microsystems, Inc. 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug 6302839
+ * @summary SecurityRace System field accesses in two threads
+ * @author Pete Soper
+ * @build SecurityRace
+ * @run main/othervm/policy=System.policy SecurityRace
+ */
+
+/*
+ * By default the test runs for a very short time. Use main arg "stress"
+ * to have a real chance of exposing races. Use main arg "time" to report
+ * the average nanoseconds per invocation of System.setSecurityManager and
+ * System.getSecurityManager. No testing for access races is performed with
+ * argument "time."
+ *
+ * Requires security permissions "setSecurityManager" and
+ * "createSecurityManager."
+ */
+
+
+
+public class SecurityRace implements Runnable {
+
+ // Number of iterations to "warm up" and get methods compiled/inlined.
+ // (this is conservative)
+ static final int WARMUP_LOOPS = 100000;
+
+ // Number of timing trials
+ static final int TIMING_TRIALS = 10;
+
+ // Seconds to run this in "stress" mode. This is double the average
+ // time to expose the races of bug 6302839 on a Blade 1000. Invoke
+ // the program with the "stress" option multiple times for more
+ // confidence.
+ static final int STRESS_MILLISECONDS = 300000;
+ static final int SET_TIMING_LOOPS = 10000;
+
+ // Max seconds to run before terminating the test ("declaring victory").
+ static int MAX_MILLISECONDS = 100;
+
+ // Number of iterations to time
+ static final int GET_TIMING_LOOPS = 10000000;
+
+ // Set true by main thread when NPE caught or time to terminate.
+ // Set true by other thread when NPE caught. It makes
+ // no difference where the NPE is thrown.
+ static volatile boolean stopthreads = false;
+
+ // Number of getProperty invocations between main loop checks
+ static final int GETPROPERTY_LOOPS = 30000;
+
+ // Used by race and timing tests. Must get set non-null at lease once.
+ static SecurityManager sm = new SecurityManager();
+
+ public static void main(String[] argv) throws Exception {
+ String s;
+
+ if (argv.length > 0) {
+ if (argv[0].equals("time")) {
+
+ // Run the timing method
+ // First warm up the method to make sure it gets compiled
+ for (int i = 0; i < WARMUP_LOOPS; i++) {
+ timeit(1, 1, 1);
+ }
+
+ System.out.println("boo");
+
+ // Now do the actual timing
+ timeit(TIMING_TRIALS, GET_TIMING_LOOPS, SET_TIMING_LOOPS);
+ } else if (argv[0].equals("stress")) {
+
+ // For stress test the test duration is boosted
+ MAX_MILLISECONDS = STRESS_MILLISECONDS;
+ } else {
+ throw new RuntimeException(
+ "SecurityRace: " + argv[0]
+ + " argument to main not recognized");
+ } // if argv
+ } // if length
+
+ long start = System.currentTimeMillis(),
+ end = start + MAX_MILLISECONDS;
+
+ // Create and start racing thread
+ (new Thread(new SecurityRace())).start();
+
+ // main thread alternates batches of getProperty() with time checks
+ try {
+ do {
+ if (stopthreads) {
+
+ // other thread suffered an NPE
+ throw new RuntimeException("SecurityRace failed with NPE");
+ }
+
+ for (int i = 0; i < GETPROPERTY_LOOPS; i++) {
+ s = System.getProperty("java.version");
+ }
+ } while (System.currentTimeMillis() < end);
+ } catch (NullPointerException e) {
+ throw new RuntimeException("SecurityRace failed with NPE");
+ } finally {
+
+ // make sure other thread terminates
+ stopthreads = true;
+ }
+ } // main
+
+ // System.security mutator.
+ public void run() {
+ try {
+ while (true) {
+ if (stopthreads) {
+ return;
+ }
+
+ System.setSecurityManager(sm);
+
+ // The goal is to catch another thread testing the
+ // value set above and trying to use it after it's
+ // nulled below.
+ System.setSecurityManager(null);
+ }
+ } catch (NullPointerException e) {
+ stopthreads = true;
+
+ return;
+ }
+ }
+
+ // Time method execution. Collects trials number of timings
+ // for the number of accessor and mutator invocation loops
+ // specified.
+ public static void timeit(int timing_trials, int get_timing_loops,
+ int set_timing_loops) {
+ try {
+ long start;
+
+ // Time the methods and report average.
+ // Time multiple trials so noise is apparent and a
+ // T test can be used to establish significance.
+ for (int j = 0; j < timing_trials; j++) {
+ start = System.nanoTime();
+
+ for (int i = 0; i < get_timing_loops; i++) {
+ sm = System.getSecurityManager();
+ }
+
+ // Don't print for "warmup" case. This might mean that
+ // the compiler fails to compile the println (setting it
+ // up to execute via interpretation using an "uncommon trap")
+ // but we don't care if this println runs slowly!
+ if (timing_trials > 1) {
+ System.out.println((float) (System.nanoTime() - start)
+ / (float) get_timing_loops);
+ }
+ }
+
+ for (int j = 0; j < timing_trials; j++) {
+ start = System.nanoTime();
+
+ for (int i = 0; i < set_timing_loops; i++) {
+ System.setSecurityManager(sm);
+ }
+
+ if (timing_trials > 1) {
+ System.out.println((float) (System.nanoTime() - start)
+ / (float) set_timing_loops);
+ }
+ }
+
+ return;
+ } catch (Exception e) {
+ throw new RuntimeException("SecurityRace got unexpected: " + e);
+ }
+ } // timeit
+} // SecurityRace
diff --git a/test/java/lang/System/System.policy b/test/java/lang/System/System.policy
new file mode 100644
index 0000000..9ce33d1
--- /dev/null
+++ b/test/java/lang/System/System.policy
@@ -0,0 +1,55 @@
+//
+// Used by SecurityRace.java
+// Standard extensions get all permissions by default
+
+grant codeBase "file:${{java.ext.dirs}}/*" {
+ permission java.security.AllPermission;
+};
+
+// default permissions granted to all domains
+
+grant {
+ // Allows any thread to stop itself using the java.lang.Thread.stop()
+ // method that takes no argument.
+ // Note that this permission is granted by default only to remain
+ // backwards compatible.
+ // It is strongly recommended that you either remove this permission
+ // from this policy file or further restrict it to code sources
+ // that you specify, because Thread.stop() is potentially unsafe.
+ // See "http://java.sun.com/notes" for more information.
+ permission java.lang.RuntimePermission "stopThread";
+
+ // These two added for SecurityRace test
+
+ permission java.lang.RuntimePermission "setSecurityManager";
+ permission java.lang.RuntimePermission "createSecurityManager";
+
+ // allows anyone to listen on un-privileged ports
+ permission java.net.SocketPermission "localhost:1024-", "listen";
+
+ // "standard" properies that can be read by anyone
+
+ permission java.util.PropertyPermission "java.version", "read";
+ permission java.util.PropertyPermission "java.vendor", "read";
+ permission java.util.PropertyPermission "java.vendor.url", "read";
+ permission java.util.PropertyPermission "java.class.version", "read";
+ permission java.util.PropertyPermission "os.name", "read";
+ permission java.util.PropertyPermission "os.version", "read";
+ permission java.util.PropertyPermission "os.arch", "read";
+ permission java.util.PropertyPermission "file.separator", "read";
+ permission java.util.PropertyPermission "path.separator", "read";
+ permission java.util.PropertyPermission "line.separator", "read";
+
+ permission java.util.PropertyPermission "java.specification.version", "read";
+ permission java.util.PropertyPermission "java.specification.vendor", "read";
+ permission java.util.PropertyPermission "java.specification.name", "read";
+
+ permission java.util.PropertyPermission "java.vm.specification.version", "read";
+ permission java.util.PropertyPermission "java.vm.specification.vendor", "read";
+ permission java.util.PropertyPermission "java.vm.specification.name", "read";
+ permission java.util.PropertyPermission "java.vm.version", "read";
+ permission java.util.PropertyPermission "java.vm.vendor", "read";
+ permission java.util.PropertyPermission "java.vm.name", "read";
+ permission java.util.PropertyPermission "java.vm.name", "read";
+};
+
diff --git a/test/java/lang/System/Versions.java b/test/java/lang/System/Versions.java
new file mode 100644
index 0000000..d94d3b4
--- /dev/null
+++ b/test/java/lang/System/Versions.java
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2004-2005 Sun Microsystems, Inc. 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/**
+ * @test
+ * @bug 4989690 6259855
+ * @summary Check that version-related system property invariants hold.
+ * @author Martin Buchholz
+ */
+
+import java.io.*;
+import java.net.URLClassLoader;
+import java.net.URL;
+
+public class Versions {
+ static String getProperty(String prop) throws Exception {
+ String value = System.getProperty(prop);
+ if (value == null)
+ throw new Exception("No such system property: " + prop);
+ System.out.printf("%s=%s%n", prop, value);
+ return value;
+ }
+
+ static ClassLoader cl;
+
+ static void checkClassVersion(int major, int minor, boolean expectSupported)
+ throws Exception
+ {
+ final String className = "ClassVersionTest";
+ final String classFile = className + ".class";
+
+ // We create an invalid class file, (only magic and version info),
+ // but the version info must be checked before the body.
+ final DataOutputStream dos =
+ new DataOutputStream(new FileOutputStream(classFile));
+ dos.writeLong((0xCafeBabel << 32) + (minor << 16) + major);
+ dos.close();
+
+ boolean supported = true;
+ try {
+ Class.forName(className, false, cl);
+ } catch (UnsupportedClassVersionError e) {
+ supported = false;
+ } catch (Throwable t) {
+ // We expect an Exception indicating invalid class file
+ }
+ new File(classFile).delete();
+ if (supported != expectSupported)
+ throw new Exception("Forgot to update java.class.version?");
+ }
+
+ public static void main(String [] args) throws Exception {
+ String classVersion = getProperty("java.class.version");
+ String javaVersion = getProperty("java.version");
+ String VMVersion = getProperty("java.vm.version");
+ String runtimeVersion = getProperty("java.runtime.version");
+ String specVersion = getProperty("java.specification.version");
+
+ if (! (javaVersion.startsWith(specVersion) &&
+ runtimeVersion.startsWith(specVersion)))
+ throw new Exception("Invalid version-related system properties");
+
+ //----------------------------------------------------------------
+ // Check that java.class.version is correct.
+ // Injecting a larger major or minor version number into a
+ // .class file should result in UnsupportedClassVersionError.
+ //----------------------------------------------------------------
+ String[] versions = classVersion.split("\\.");
+ int majorVersion = Integer.parseInt(versions[0]);
+ int minorVersion = Integer.parseInt(versions[1]);
+ System.out.printf("majorVersion=%s%n",majorVersion);
+ System.out.printf("minorVersion=%s%n",minorVersion);
+
+ // Look in ".", and *not* in CLASSPATH
+ cl = new URLClassLoader(new URL[]{new File("./").toURL()}, null);
+
+ checkClassVersion(majorVersion , minorVersion , true );
+ checkClassVersion(majorVersion + 1, minorVersion , false);
+ checkClassVersion(majorVersion , minorVersion + 1, false);
+ }
+}
diff --git a/test/java/lang/System/finalization/FinExit.java b/test/java/lang/System/finalization/FinExit.java
new file mode 100644
index 0000000..26664f2
--- /dev/null
+++ b/test/java/lang/System/finalization/FinExit.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 1998 Sun Microsystems, Inc. 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/* @test
+ @bug 4116016
+ @summary Ensure that finalizers are not invoked more than once when on-exit
+ finalization is enabled and a finalizer invokes System.exit after
+ System.exit has already been invoked
+ @build FinExit
+ @run shell FinExit.sh
+ */
+
+
+public class FinExit {
+
+ boolean finalized = false;
+
+ public void finalize() {
+ if (finalized) {
+ System.out.println("2");
+ } else {
+ finalized = true;
+ System.out.println("1");
+ System.exit(0);
+ }
+ }
+
+ public static void main(String[] args) throws Exception {
+ System.runFinalizersOnExit(true);
+ Object o = new FinExit();
+ System.exit(0);
+ }
+
+}
diff --git a/test/java/lang/System/finalization/FinExit.sh b/test/java/lang/System/finalization/FinExit.sh
new file mode 100644
index 0000000..d2e48da
--- /dev/null
+++ b/test/java/lang/System/finalization/FinExit.sh
@@ -0,0 +1,34 @@
+#! /bin/sh
+
+#
+# Copyright 1998 Sun Microsystems, Inc. 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
+# under the terms of the GNU General Public License version 2 only, as
+# published by the Free Software Foundation.
+#
+# This code is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+# version 2 for more details (a copy is included in the LICENSE file that
+# accompanied this code).
+#
+# You should have received a copy of the GNU General Public License version
+# 2 along with this work; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+# CA 95054 USA or visit www.sun.com if you need additional information or
+# have any questions.
+#
+
+#
+x=`$TESTJAVA/bin/java -cp $TESTCLASSES FinExit`
+echo $x
+if [ "x$x" != "x1" ]; then
+ echo On-exit finalizer invoked twice
+ exit 1
+else
+ exit 0
+fi
diff --git a/test/java/lang/System/finalization/FinThreads.java b/test/java/lang/System/finalization/FinThreads.java
new file mode 100644
index 0000000..fd91c1b
--- /dev/null
+++ b/test/java/lang/System/finalization/FinThreads.java
@@ -0,0 +1,131 @@
+/*
+ * Copyright 1998 Sun Microsystems, Inc. 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/* @test
+ @bug 4026895
+ @summary Ensure that System.runFinalization does not run finalizers in the
+ thread that invokes it
+ */
+
+
+public class FinThreads {
+
+ static Thread mainThread;
+
+ static Object lock = new Object(); /* Protects following two fields */
+ static Thread finalizerThread = null;
+ static Thread finalizedBy = null;
+
+
+ static class Foo {
+
+ boolean catchFinalizer = false;
+
+ /* Instances are only created in an auxiliary thread, in order to
+ guard against stray references from the current thread's stack
+ */
+ static public void create(final boolean catchFinalizer)
+ throws InterruptedException
+ {
+ Thread t = new Thread(new Runnable() {
+ public void run() {
+ new Foo(catchFinalizer);
+ }});
+ t.start();
+ t.join();
+ }
+
+ public Foo(boolean catchFinalizer) {
+ this.catchFinalizer = catchFinalizer;
+ }
+
+ public void finalize() throws InterruptedException {
+ if (catchFinalizer) {
+ boolean gotFinalizer = false;
+ synchronized (lock) {
+ if (finalizerThread == null) {
+ finalizerThread = Thread.currentThread();
+ gotFinalizer = true;
+ }
+ }
+ if (gotFinalizer) {
+ System.err.println("Caught finalizer thread; sleeping...");
+ Thread.sleep(Long.MAX_VALUE);
+ }
+ } else {
+ synchronized (lock) {
+ finalizedBy = Thread.currentThread();
+ }
+ System.err.println("Test object finalized by " + finalizedBy);
+ }
+ }
+
+ }
+
+
+ static void alarm(final Thread sleeper, final long delay)
+ throws InterruptedException
+ {
+ Thread t = new Thread(new Runnable() {
+ public void run() {
+ try {
+ Thread.sleep(delay);
+ System.err.println("Waking " + sleeper);
+ sleeper.interrupt();
+ } catch (InterruptedException x) { }
+ }});
+ t.setDaemon(true);
+ t.start();
+ }
+
+
+ public static void main(String[] args) throws Exception {
+
+ mainThread = Thread.currentThread();
+
+ /* Find the finalizer thread and put it to sleep */
+ for (;;) {
+ Foo.create(true);
+ System.gc();
+ synchronized (lock) {
+ if (finalizerThread != null) break;
+ }
+ }
+
+ /* Now create a finalizable object and run finalization */
+ alarm(finalizerThread, 5000);
+ Foo.create(false);
+ for (;;) {
+ System.gc();
+ System.runFinalization();
+ synchronized (lock) {
+ if (finalizedBy != null) break;
+ }
+ }
+
+ if (finalizedBy == mainThread)
+ throw new Exception("Finalizer run in main thread");
+
+ }
+
+}