jdk8-mips64-public/hotspot: src/share/vm/Xusage.txt@e1162778c1c8

7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
Summary: A referent object that is only weakly reachable at the start of concurrent marking but is re-attached to the strongly reachable object graph during marking may not be marked as live. This can cause the reference object to be processed prematurely and leave dangling pointers to the referent object. Implement a read barrier for the java.lang.ref.Reference::referent field by intrinsifying the Reference.get() method, and intercepting accesses though JNI, reflection, and Unsafe, so that when a non-null referent object is read it is also logged in an SATB buffer.
Reviewed-by: kvn, iveresov, never, tonyp, dholmes

     1     -Xmixed           mixed mode execution (default)

     2     -Xint             interpreted mode execution only

     3     -Xbootclasspath:<directories and zip/jar files separated by ;>

     4                       set search path for bootstrap classes and resources

     5     -Xbootclasspath/a:<directories and zip/jar files separated by ;>

     6                       append to end of bootstrap class path

     7     -Xbootclasspath/p:<directories and zip/jar files separated by ;>

     8                       prepend in front of bootstrap class path

     9     -Xnoclassgc       disable class garbage collection

    10     -Xincgc           enable incremental garbage collection

    11     -Xloggc:<file>    log GC status to a file with time stamps

    12     -Xbatch           disable background compilation

    13     -Xms<size>        set initial Java heap size

    14     -Xmx<size>        set maximum Java heap size

    15     -Xss<size>        set java thread stack size

    16     -Xprof            output cpu profiling data

    17     -Xfuture          enable strictest checks, anticipating future default

    18     -Xrs              reduce use of OS signals by Java/VM (see documentation)

    19     -Xcheck:jni       perform additional checks for JNI functions

    20     -Xshare:off	      do not attempt to use shared class data

    21     -Xshare:auto      use shared class data if possible (default)

    22     -Xshare:on	      require using shared class data, otherwise fail.

    24 The -X options are non-standard and subject to change without notice.

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src/share/vm/Xusage.txt@e1162778c1c8

src/share/vm/Xusage.txt