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/*
* @test
* @summary Test that CDS still works when the JDK is moved to a new directory
* @requires vm.cds
* @requires os.family == "linux"
* @library /test/lib
* @modules jdk.jartool/sun.tools.jar
* @compile test-classes/Hello.java
* @run driver MoveJDKTest
*/
// This test works only on Linux because it depends on symlinks and the name of the hotspot DLL (libjvm.so).
// It probably doesn't work on Windows.
// TODO: change libjvm.so to libjvm.dylib on MacOS, before adding "@requires os.family == mac"
// TODO: test on solaris, before adding "@requires os.family == solaris"
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import jdk.test.lib.process.OutputAnalyzer;
public class MoveJDKTest {
public static void main(String[] args) throws Exception {
String java_home_src = System.getProperty("java.home");
String java_home_dst = System.getProperty("user.dir") + File.separator + "moved_jdk";
TestCommon.startNewArchiveName();
String jsaFile = TestCommon.getCurrentArchiveName();
String jsaOpt = "-XX:SharedArchiveFile=" + jsaFile;
{
ProcessBuilder pb = makeBuilder(java_home_src + "/bin/java", "-Xshare:dump", jsaOpt);
TestCommon.executeAndLog(pb, "dump");
}
{
ProcessBuilder pb = makeBuilder(java_home_src + "/bin/java",
"-Xshare:auto",
jsaOpt,
"-Xlog:class+path=info",
"-version");
OutputAnalyzer out = TestCommon.executeAndLog(pb, "exec-src");
out.shouldNotContain("shared class paths mismatch");
out.shouldNotContain("BOOT classpath mismatch");
}
clone(new File(java_home_src), new File(java_home_dst));
System.out.println("============== Cloned JDK at " + java_home_dst);
// Test runtime with cloned JDK
{
ProcessBuilder pb = makeBuilder(java_home_dst + "/bin/java",
"-Xshare:auto",
jsaOpt,
"-Xlog:class+path=info",
"-version");
OutputAnalyzer out = TestCommon.executeAndLog(pb, "exec-dst");
out.shouldNotContain("shared class paths mismatch");
out.shouldNotContain("BOOT classpath mismatch");
}
// Test with bad JAR file name, hello.modules
String helloJar = JarBuilder.getOrCreateHelloJar();
String fake_modules = copyFakeModulesFromHelloJar();
String dumptimeBootAppendOpt = "-Xbootclasspath/a:" + fake_modules;
{
ProcessBuilder pb = makeBuilder(java_home_src + "/bin/java",
"-Xshare:dump",
dumptimeBootAppendOpt,
jsaOpt);
TestCommon.executeAndLog(pb, "dump");
}
{
String runtimeBootAppendOpt = dumptimeBootAppendOpt + System.getProperty("path.separator") + helloJar;
ProcessBuilder pb = makeBuilder(java_home_dst + "/bin/java",
"-Xshare:auto",
runtimeBootAppendOpt,
jsaOpt,
"-Xlog:class+path=info",
"-version");
OutputAnalyzer out = TestCommon.executeAndLog(pb, "exec-dst");
out.shouldNotContain("shared class paths mismatch");
out.shouldNotContain("BOOT classpath mismatch");
}
// Test with no modules image in the <java home>/lib directory
renameModulesFile(java_home_dst);
{
ProcessBuilder pb = makeBuilder(java_home_dst + "/bin/java",
"-version");
OutputAnalyzer out = TestCommon.executeAndLog(pb, "exec-missing-modules");
out.shouldHaveExitValue(1);
out.shouldContain("Failed setting boot class path.");
}
}
// Do a cheap clone of the JDK. Most files can be sym-linked. However, $JAVA_HOME/bin/java and $JAVA_HOME/lib/.../libjvm.so"
// must be copied, because the java.home property is derived from the canonicalized paths of these 2 files.
static void clone(File src, File dst) throws Exception {
if (dst.exists()) {
if (!dst.isDirectory()) {
throw new RuntimeException("Not a directory :" + dst);
}
} else {
if (!dst.mkdir()) {
throw new RuntimeException("Cannot create directory: " + dst);
}
}
for (String child : src.list()) {
if (child.equals(".") || child.equals("..")) {
continue;
}
File child_src = new File(src, child);
File child_dst = new File(dst, child);
if (child_dst.exists()) {
throw new RuntimeException("Already exists: " + child_dst);
}
if (child_src.isFile()) {
if (child.equals("libjvm.so") || child.equals("java")) {
Files.copy(child_src.toPath(), /* copy data to -> */ child_dst.toPath());
} else {
Files.createSymbolicLink(child_dst.toPath(), /* link to -> */ child_src.toPath());
}
} else {
clone(child_src, child_dst);
}
}
}
static void renameModulesFile(String javaHome) throws Exception {
String modulesDir = javaHome + File.separator + "lib";
File origModules = new File(modulesDir, "modules");
if (!origModules.exists()) {
throw new RuntimeException("modules file not found");
}
File renamedModules = new File(modulesDir, "orig_modules");
if (renamedModules.exists()) {
throw new RuntimeException("found orig_modules unexpectedly");
}
boolean success = origModules.renameTo(renamedModules);
if (!success) {
throw new RuntimeException("rename modules file failed");
}
}
static ProcessBuilder makeBuilder(String... args) throws Exception {
System.out.print("[");
for (String s : args) {
System.out.print(" " + s);
}
System.out.println(" ]");
return new ProcessBuilder(args);
}
private static String copyFakeModulesFromHelloJar() throws Exception {
String classDir = System.getProperty("test.classes");
String newFile = "hello.modules";
String path = classDir + File.separator + newFile;
Files.copy(Paths.get(classDir, "hello.jar"),
Paths.get(classDir, newFile),
StandardCopyOption.REPLACE_EXISTING);
return path;
}
}