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  1. JDK
  2. JDK-8237508

Simplify JarFile.isInitializing

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      Description

        JDK-8234466 regress startup and footprint of very small applications noticeably.

        Cause appears to be the addition of a lambda to JarFile.<clinit>. Since the value is only read rarely and only in one place, it could be simplified to use the default ThreadLocal initial value (null):

        - static final ThreadLocal<Boolean> isInitializing =
        - ThreadLocal.withInitial(() -> Boolean.FALSE);
        + static final ThreadLocal<Boolean> isInitializing = new ThreadLocal<>();
         
        .. with adjustments in the places that read. This recuperates the startup regression.

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            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-8237978 Simplify JarFile.isInitializing

            • 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-8238748 Simplify JarFile.isInitializing

            • 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-8239258 Simplify JarFile.isInitializing

            • 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-8239329 Simplify JarFile.isInitializing

            • 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-8239369 Simplify JarFile.isInitializing

            • 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-8246547 Simplify JarFile.isInitializing

            • 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-8237529 Avoid early use of lambda in JarFile

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8234466 Class loading deadlock involving X509Factory#commitEvent()

            • P3 - Major loss of function.
            • Resolved

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                redestad Claes Redestad
                redestad Claes Redestad
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                  Updated:
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