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/*
 * @test
 *
 * @summary converted from VM Testbase nsk/jvmti/unit/FollowReferences/followref003.
 * VM Testbase keywords: [quick, jpda, jvmti, noras, feature_jdk6_jpda, vm6]
 * VM Testbase readme:
 * DESCRIPTION
 *     This JVMTI test exercises JVMTI heap function FollowReferences().
 *     The tests checks:
 *       - that FollowReferences() function iterates over all objects
 *         referenced from the heap root and does not iterate over
 *         reachable and unreachable tagged objects because
 *         the visit flags are not returned;
 *       - that FollowReferences() passes correct values to the callbacks;
 *       - that untagged objects/classes can be filtered out.
 *     The test creates and tags the following tested objects:
 *         tested root object              - object to be tested
 *         chain of unreachable objects    - objects to be not iterated
 *         chain of reachable objects      - objects to be not iterated as well
 *     The test marks reachable objects with positive tags and
 *     unreachable objects with negative tags.
 *     Local JNI references are explicitely deleted to ensure they
 *     do not affect the objects' reachability.
 *     The test supports the following special options:
 *         objects=<number>
 *             - number of objects in each objects chain
 *         info=[none|all|objref|stackref|heaproot|heapobj]
 *             - print trace message for each invocation of particular callback
 * COMMENTS
 *     The test was cloned/modified from the original NSK test:
 *       IterateOverObjectsReachableFromObject/iterobjreachobj001
 *
 * @library /vmTestbase
 *          /test/lib
 * @run driver jdk.test.lib.FileInstaller . .
 * @build ExecDriver
 *        nsk.jvmti.unit.FollowReferences.followref003
 * @run main/othervm/native PropertyResolvingWrapper ExecDriver --java
 *      "-agentlib:followref003=-waittime=5 -verbose objects=3"
 *      nsk.jvmti.unit.FollowReferences.followref003
 */

