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comparison src/share/vm/classfile/altHashing.cpp @ 6725:da91efe96a93

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6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
parents e9140bf80b4a
children 6f817ce50129
comparison
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6724:36d1d483d5d6 6725:da91efe96a93
31 31
32 // Get the hash code of the classes mirror if it exists, otherwise just 32 // Get the hash code of the classes mirror if it exists, otherwise just
33 // return a random number, which is one of the possible hash code used for 33 // return a random number, which is one of the possible hash code used for
34 // objects. We don't want to call the synchronizer hash code to install 34 // objects. We don't want to call the synchronizer hash code to install
35 // this value because it may safepoint. 35 // this value because it may safepoint.
36 intptr_t object_hash(klassOop k) { 36 intptr_t object_hash(Klass* k) {
37 intptr_t hc = k->java_mirror()->mark()->hash(); 37 intptr_t hc = k->java_mirror()->mark()->hash();
38 return hc != markOopDesc::no_hash ? hc : os::random(); 38 return hc != markOopDesc::no_hash ? hc : os::random();
39 } 39 }
40 40
41 // Seed value used for each alternative hash calculated. 41 // Seed value used for each alternative hash calculated.