Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8043224

-Xcheck:jni improvements to exception checking and excessive local refs

    XMLWordPrintable

Details

    • Enhancement
    • Resolution: Fixed
    • P4
    • 9
    • 9
    • hotspot
    • b22
    • generic
    • generic

    Backports

      Description

        Summary of enhancements to checked JNI after a number mail discussions and related bugs:

        1) Checked JNI to enforce calling "ExceptionOccurred()" or "ExceptionOccurred()" after using "Call*Method()" functions, before using further JNI functions. Warn if exception check not carried out before calling a method that does not allow pending exceptions. Subtle difference to the current "there is a pending exception" check, does the programmer actual call one of the check functions.

        2) If a JNI method implicitly grew the local ref capacity beyond what was planned for, warn the user. This of course excludes PushLocalFrame or EnsureLocalCapacity.

        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-8072804 -Xcheck:jni improvements to exception checking and excessive local refs

            • 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-8077448 -Xcheck:jni improvements to exception checking and excessive local refs

            • 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-8086432 -Xcheck:jni improvements to exception checking and excessive local refs

            • 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-8137646 -Xcheck:jni improvements to exception checking and excessive local refs

            • 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-6723450 -verbose:jni or -Xcheck:jni do not report excessive local reference usage.

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8164086 Checked JNI pending exception check should be cleared when returning to Java frame

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8046668 Excessive checked JNI warnings from Java startup

            • P3 - Major loss of function.
            • Closed

            Bug - A problem which impairs or prevents the functions of the product. JDK-8193222 EnsureLocalCapacity() should maintain capacity requests through multiple calls

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8160614 Some of the checked JNI improvements are excessively verbose

            • P3 - Major loss of function.
            • Closed

            Activity

              People

                dsimms David Simms
                dsimms David Simms
                Votes:
                0 Vote for this issue
                Watchers:
                2 Start watching this issue

                Dates

                  Created:
                  Updated:
                  Resolved: