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  1. JDK
  2. JDK-8261098

Add clhsdb "findsym" command

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Details

    • Enhancement
    • Resolution: Fixed
    • P3
    • 17
    • 17
    • hotspot
    • None
    • b11

    Description

      There is currently no way to map a native symbol to its address, which is basically the opposite of what "findpc" does. It's very easy to add that support:

             new Command("findsym", "findsym name", false) {
                 public void doit(Tokens t) {
                     if (t.countTokens() != 1) {
                         usage();
                     } else {
                            out.println(VM.getVM().getDebugger().lookup(null, t.nextToken()));
                     }
                 }
             },

      And this is what it allows you to do:

      hsdb> findsym MaxJNILocalCapacity
      0x00007f3c3def6e20
      hsdb> findpc 0x00007f3c3def6e20
      Address 0x00007f3c3def6e20: MaxJNILocalCapacity
      hsdb> examine 0x00007f3c3def6e20
      0x00007f3c3def6e20: 0x0000000000010000

      And 0x10000 is indeed the default value for MaxJNILocalCapacity as seen in globals.hpp:

        product(intx, MaxJNILocalCapacity, 65536, \

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          csr for

          CSR - null JDK-8261101 Add clhsdb "findsym" command

          • P3 - Major loss of function.
          • Closed
          is blocked by

          Bug - A problem which impairs or prevents the functions of the product. JDK-8261692 Bugs in clhsdb history support

          • P3 - Major loss of function.
          • Resolved
          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8263242 serviceability/sa/ClhsdbFindPC.java cannot find MaxJNILocalCapacity with ASLR

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8263546 Add "findsym" command to clhsdb.html help file

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

          Enhancement - null JDK-8247514 Improve clhsdb 'findpc' ability to determine what an address points to by improving PointerFinder and PointerLocation classes

          • P3 - Major loss of function.
          • Resolved
          links to

          Commit Commit openjdk/jdk/c158413e

          Review Review openjdk/jdk/2567

          Activity

            People

              cjplummer Chris Plummer
              cjplummer Chris Plummer
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                Created:
                Updated:
                Resolved: