28 import static java.util.Arrays.stream;
  29 import static java.util.stream.Collectors.joining;
  30 import static java.util.stream.Collectors.toList;
  31 import static jdk.test.lib.process.ProcessTools.createJavaProcessBuilder;
  32 import static jdk.test.lib.Platform.isWindows;
  33 
  34 import java.io.BufferedReader;
  35 import java.io.File;
  36 import java.io.FileNotFoundException;
  37 import java.io.FileOutputStream;
  38 import java.io.IOException;
  39 import java.io.InputStreamReader;
  40 import java.util.Collection;
  41 import java.util.Optional;
  42 import java.util.stream.Stream;
  43 
  44 /*
  45  * @test TestInheritFD
  46  * @bug 8176717 8176809
  47  * @summary a new process should not inherit open file descriptors


  48  * @library /test/lib
  49  * @modules java.base/jdk.internal.misc
  50  *          java.management
  51  */
  52 
  53 /**
  54  * Test that HotSpot does not leak logging file descriptors.
  55  *
  56  * This test is performed in three steps. The first VM starts a second VM with
  57  * gc logging enabled. The second VM starts a third VM and redirects the third
  58  * VMs output to the first VM, it then exits and hopefully closes its log file.
  59  *
  60  * The third VM waits for the second to exit and close its log file. After that,
  61  * the third VM tries to rename the log file of the second VM. If it succeeds in
  62  * doing so it means that the third VM did not inherit the open log file
  63  * (windows can not rename opened files easily)
  64  *
  65  * The third VM communicates the success to rename the file by printing "CLOSED
  66  * FD". The first VM checks that the string was printed by the third VM.
  67  *

  28 import static java.util.Arrays.stream;
  29 import static java.util.stream.Collectors.joining;
  30 import static java.util.stream.Collectors.toList;
  31 import static jdk.test.lib.process.ProcessTools.createJavaProcessBuilder;
  32 import static jdk.test.lib.Platform.isWindows;
  33 
  34 import java.io.BufferedReader;
  35 import java.io.File;
  36 import java.io.FileNotFoundException;
  37 import java.io.FileOutputStream;
  38 import java.io.IOException;
  39 import java.io.InputStreamReader;
  40 import java.util.Collection;
  41 import java.util.Optional;
  42 import java.util.stream.Stream;
  43 
  44 /*
  45  * @test TestInheritFD
  46  * @bug 8176717 8176809
  47  * @summary a new process should not inherit open file descriptors
  48  * @comment On Aix lsof requires root privileges.
  49  * @requires os.family != "aix"
  50  * @library /test/lib
  51  * @modules java.base/jdk.internal.misc
  52  *          java.management
  53  */
  54 
  55 /**
  56  * Test that HotSpot does not leak logging file descriptors.
  57  *
  58  * This test is performed in three steps. The first VM starts a second VM with
  59  * gc logging enabled. The second VM starts a third VM and redirects the third
  60  * VMs output to the first VM, it then exits and hopefully closes its log file.
  61  *
  62  * The third VM waits for the second to exit and close its log file. After that,
  63  * the third VM tries to rename the log file of the second VM. If it succeeds in
  64  * doing so it means that the third VM did not inherit the open log file
  65  * (windows can not rename opened files easily)
  66  *
  67  * The third VM communicates the success to rename the file by printing "CLOSED
  68  * FD". The first VM checks that the string was printed by the third VM.
  69  *