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From 992b95828e2efe54f30d81c1418e997215ed22b5 Mon Sep 17 00:00:00 2001
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From: Jakub Filak <jfilak@redhat.com>
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Date: Wed, 29 Oct 2014 14:07:10 +0100
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Subject: [PATCH] Fix a deadlock in RemoteTest
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Related to #42
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---
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test/CMakeLists.txt | 1 +
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test/RemoteTest.java | 12 ++++++++++--
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test/outputs/run_remote.log.in | 4 ++--
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3 files changed, 13 insertions(+), 4 deletions(-)
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diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
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index 4e69049..5bb2b2d 100644
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--- a/test/CMakeLists.txt
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+++ b/test/CMakeLists.txt
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@@ -106,6 +106,7 @@ function(_add_test_target target_name)
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add_custom_target(
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${target_name}
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${pre_command}
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+# -Xdebug -Xrunjdwp:transport=dt_socket,address=8001,server=y,suspend=n + jdb -attach 8001
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COMMAND LD_LIBRARY_PATH=${CMAKE_BINARY_DIR}/src ${Java_JAVA_EXECUTABLE} -agentlib:${AGENT_NAME}="${agent_options},abrt=$$ABRT_ENABLED,output=${target_name}.log" ${java_params}
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DEPENDS AbrtChecker ${depends}
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WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
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diff --git a/test/RemoteTest.java b/test/RemoteTest.java
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index 6071f8e..040384f 100644
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--- a/test/RemoteTest.java
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+++ b/test/RemoteTest.java
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@@ -73,11 +73,19 @@ public class RemoteTest {
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server.setExecutor(null); // creates a default executor
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server.start();
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+ /* Download the jar in order to fully intialize the second thread.
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+ * Since Java-1.8 HttpExchange.sendResponseHeaders() adds 'Date' header
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+ * with value formated according to locale. Getting the locale leads to
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+ * loading of some other class which results in a deadlock.
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+ */
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+ URL remoteJarUrl = new URL("http://localhost:54321/JarTest.jar");
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+ InputStream input = remoteJarUrl.openStream();
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+ input.close();
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+
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try {
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Method method = URLClassLoader.class.getDeclaredMethod("addURL", new Class[]{URL.class});
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method.setAccessible(true);
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- method.invoke(ClassLoader.getSystemClassLoader(), new Object[]{new URL("http://localhost:54321/JarTest.jar")});
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-
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+ method.invoke(ClassLoader.getSystemClassLoader(), new Object[]{remoteJarUrl});
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/* Loaded these classes into cache. */
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final String needed[] = {"SimpleTest", "ThreadUncaughtException", "ThreadCaughtException"};
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for (String requiredClass : needed) {
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diff --git a/test/outputs/run_remote.log.in b/test/outputs/run_remote.log.in
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index 90f5db7..aeb7890 100644
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--- a/test/outputs/run_remote.log.in
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+++ b/test/outputs/run_remote.log.in
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@@ -7,7 +7,7 @@ Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 42
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at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:LINENO) [jar:file:JAVA_AND_SYSTEM_SPECIFIC_PATH/rt.jar!/sun/reflect/NativeMethodAccessorImpl.class]
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at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:LINENO) [jar:file:JAVA_AND_SYSTEM_SPECIFIC_PATH/rt.jar!/sun/reflect/DelegatingMethodAccessorImpl.class]
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at java.lang.reflect.Method.invoke(Method.java:LINENO) [jar:file:JAVA_AND_SYSTEM_SPECIFIC_PATH/rt.jar!/java/lang/reflect/Method.class]
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- at RemoteTest.main(RemoteTest.java:102) [file:@CMAKE_BINARY_DIR@/test/RemoteTest.class]
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+ at RemoteTest.main(RemoteTest.java:110) [file:@CMAKE_BINARY_DIR@/test/RemoteTest.class]
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executable: @CMAKE_BINARY_DIR@/test/RemoteTest.class
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Uncaught exception java.lang.NullPointerException in method SimpleTest.throwNullPointerException()
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Exception in thread "main" java.lang.NullPointerException
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@@ -17,5 +17,5 @@ Exception in thread "main" java.lang.NullPointerException
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at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:LINENO) [jar:file:JAVA_AND_SYSTEM_SPECIFIC_PATH/rt.jar!/sun/reflect/NativeMethodAccessorImpl.class]
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at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:LINENO) [jar:file:JAVA_AND_SYSTEM_SPECIFIC_PATH/rt.jar!/sun/reflect/DelegatingMethodAccessorImpl.class]
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at java.lang.reflect.Method.invoke(Method.java:LINENO) [jar:file:JAVA_AND_SYSTEM_SPECIFIC_PATH/rt.jar!/java/lang/reflect/Method.class]
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- at RemoteTest.main(RemoteTest.java:104) [file:@CMAKE_BINARY_DIR@/test/RemoteTest.class]
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+ at RemoteTest.main(RemoteTest.java:112) [file:@CMAKE_BINARY_DIR@/test/RemoteTest.class]
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executable: @CMAKE_BINARY_DIR@/test/RemoteTest.class
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--
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1.8.3.1
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