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  1. JDK
  2. JDK-8280002

jmap -histo may leak stream

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    • b06

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      Description

        JDK-8215624 added parallel heap iteration to both `jmap -histo` and `jcmd GC.class_histogram`. When called with an explicit file and an invalid argument for number of threads, it leaks the file (bit of memory and a handle).

        Example:

        jmap -histo:parallel=notanumber,file=xx.txt

        Can only be reproduced with jmap. jcmd is safe, since `GC.class_histogram` handles argument for the `-parallel` option in shared code, and there it is done correclty.

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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-8280111 jmap -histo may leak stream

            • 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-8298608 jmap -histo may leak stream

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

            Sub-task - The sub-task of the issue JDK-8215624 Add parallel heap iteration for jmap –histo

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

            Commit Commit openjdk/jdk17u-dev/f749fc73

            Commit Commit openjdk/jdk/c359c358

            Review Review openjdk/jdk11u-dev/768

            Review Review openjdk/jdk17u-dev/99

            Review Review openjdk/jdk/7078

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                stuefe Thomas Stuefe
                stuefe Thomas Stuefe
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                  Created:
                  Updated:
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