Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-6744401

Consider removal of code disabling JIT in Toolkit.getDefaultToolkit

    XMLWordPrintable

Details

    • b06
    • generic
    • generic

    Backports

      Description

        getDefulatToolkit() has following code:

                        // We disable the JIT during toolkit initialization. This
                        // tends to touch lots of classes that aren't needed again
                        // later and therefore JITing is counter-productiive.
                        java.lang.Compiler.disable();

        It might be legacy code and because JIT seems to be diabled globally it might affect code working in other threads.

        I've checked couple tests with -XX:+PrintCompilation and observe exactly same set of compiled methods with
        and without this code. It is still possible that tracing what is accessed during toolkit initialization
        is waste of resources but i am not sure that diabling compilation does disable tracing too.

        Attachments

          Issue Links

            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8040679 Consider removal of code disabling JIT in Toolkit.getDefaultToolkit

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8045705 Consider removal of code disabling JIT in Toolkit.getDefaultToolkit

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8053536 Consider removal of code disabling JIT in Toolkit.getDefaultToolkit

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved
            duplicates

            Bug - A problem which impairs or prevents the functions of the product. JDK-8034855 Toolkit class should not disable JIT compiler

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Closed
            relates to

            Enhancement - null JDK-4164513 disable JIT during AWT toolkit startup

            • P3 - Major loss of function.
            • Closed

            Activity

              People

                serb Sergey Bylokhov
                igor Igor Nekrestyanov (Inactive)
                Votes:
                0 Vote for this issue
                Watchers:
                2 Start watching this issue

                Dates

                  Created:
                  Updated:
                  Resolved:
                  Imported:
                  Indexed: