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test/jdk/com/sun/jdi/ExclusiveBind.java
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*** 25,139 ****
* @bug 4531526
* @summary Test that more than one debuggee cannot bind to same port
* at the same time.
* @library /test/lib
*
! * @modules java.management
! * jdk.jdi
! * @build VMConnection ExclusiveBind HelloWorld
* @run driver ExclusiveBind
*/
- import java.net.ServerSocket;
- import com.sun.jdi.Bootstrap;
- import com.sun.jdi.VirtualMachine;
- import com.sun.jdi.connect.Connector;
- import com.sun.jdi.connect.AttachingConnector;
-
- import java.util.ArrayList;
- import java.util.Map;
- import java.util.List;
- import java.util.Iterator;
- import java.util.concurrent.TimeUnit;
import jdk.test.lib.process.ProcessTools;
! import jdk.test.lib.Utils;
public class ExclusiveBind {
/*
! * Find a connector by name
! */
! private static Connector findConnector(String name) {
! List connectors = Bootstrap.virtualMachineManager().allConnectors();
! Iterator iter = connectors.iterator();
! while (iter.hasNext()) {
! Connector connector = (Connector)iter.next();
! if (connector.name().equals(name)) {
! return connector;
! }
! }
! return null;
! }
!
! /*
! * Launch (in server mode) a debuggee with the given address and
! * suspend mode.
! */
! private static ProcessBuilder prepareLauncher(String address, boolean suspend, String class_name) throws Exception {
! List<String> args = new ArrayList<>();
! for(String dbgOption : VMConnection.getDebuggeeVMOptions().split(" ")) {
! if (!dbgOption.trim().isEmpty()) {
! args.add(dbgOption);
! }
! }
! String lib = "-agentlib:jdwp=transport=dt_socket,server=y,suspend=";
! if (suspend) {
! lib += "y";
! } else {
! lib += "n";
! }
! lib += ",address=" + address;
!
! args.add(lib);
! args.add(class_name);
!
! return ProcessTools.createJavaProcessBuilder(args.toArray(new String[args.size()]));
! }
!
! /*
! * - pick a TCP port
! * - Launch a debuggee in server=y,suspend=y,address=${port}
! * - Launch a second debuggee in server=y,suspend=n with the same port
* - Second debuggee should fail with an error (address already in use)
* - For clean-up we attach to the first debuggee and resume it.
*/
public static void main(String args[]) throws Exception {
- // find a free port
- ServerSocket ss = new ServerSocket(0);
- int port = ss.getLocalPort();
- ss.close();
-
- String address = String.valueOf(port);
-
// launch the first debuggee
! ProcessBuilder process1 = prepareLauncher(address, true, "HelloWorld");
! // start the debuggee and wait for the "ready" message
! Process p = ProcessTools.startProcess(
! "process1",
! process1,
! line -> line.equals("Listening for transport dt_socket at address: " + address),
! Utils.adjustTimeout(5000),
! TimeUnit.MILLISECONDS
! );
!
// launch a second debuggee with the same address
! ProcessBuilder process2 = prepareLauncher(address, false, "HelloWorld");
// get exit status from second debuggee
int exitCode = ProcessTools.startProcess("process2", process2).waitFor();
- // clean-up - attach to first debuggee and resume it
- AttachingConnector conn = (AttachingConnector)findConnector("com.sun.jdi.SocketAttach");
- Map conn_args = conn.defaultArguments();
- Connector.IntegerArgument port_arg =
- (Connector.IntegerArgument)conn_args.get("port");
- port_arg.setValue(port);
- VirtualMachine vm = conn.attach(conn_args);
- vm.resume();
-
// if the second debuggee ran to completion then we've got a problem
if (exitCode == 0) {
throw new RuntimeException("Test failed - second debuggee didn't fail to bind");
} else {
System.out.println("Test passed - second debuggee correctly failed to bind");
}
}
}
--- 25,65 ----
* @bug 4531526
* @summary Test that more than one debuggee cannot bind to same port
* at the same time.
* @library /test/lib
*
! * @build ExclusiveBind HelloWorld
* @run driver ExclusiveBind
*/
import jdk.test.lib.process.ProcessTools;
! import lib.jdb.Debuggee;
public class ExclusiveBind {
/*
! * - Launch a debuggee with server=y,suspend=y
! * - Parse listening port
! * - Launch a second debuggee in server=y,suspend=n with the parsed port
* - Second debuggee should fail with an error (address already in use)
* - For clean-up we attach to the first debuggee and resume it.
*/
public static void main(String args[]) throws Exception {
// launch the first debuggee
! try (Debuggee process1 = Debuggee.launcher("HelloWorld").launch("process1")) {
// launch a second debuggee with the same address
! ProcessBuilder process2 = Debuggee.launcher("HelloWorld")
! .setSuspended(false)
! .setAddress(process1.getAddress())
! .prepare();
// get exit status from second debuggee
int exitCode = ProcessTools.startProcess("process2", process2).waitFor();
// if the second debuggee ran to completion then we've got a problem
if (exitCode == 0) {
throw new RuntimeException("Test failed - second debuggee didn't fail to bind");
} else {
System.out.println("Test passed - second debuggee correctly failed to bind");
}
}
+ }
}
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