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8154736: enhancement of cmpxchg and copy_to_survivor for ppc64

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Reviewed-by: eosterlund, mdoerr, kbarrett
This commit is contained in:
Michihiro Horie 2018-06-05 09:29:15 +02:00
parent e4fc10b3c0
commit 1213297257
3 changed files with 21 additions and 9 deletions
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6
src/hotspot/share/oops/oop.hpp
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@ -30,6 +30,7 @@
#include "memory/memRegion.hpp"
#include "oops/access.hpp"
#include "oops/metadata.hpp"
#include "runtime/atomic.hpp"
#include "utilities/macros.hpp"
// oopDesc is the top baseclass for objects classes. The {name}Desc classes describe
@ -72,7 +73,7 @@ class oopDesc {
inline void release_set_mark(markOop m);
inline markOop cas_set_mark(markOop new_mark, markOop old_mark);
inline markOop cas_set_mark_raw(markOop new_mark, markOop old_mark);
inline markOop cas_set_mark_raw(markOop new_mark, markOop old_mark, atomic_memory_order order = memory_order_conservative);
// Used only to re-initialize the mark word (e.g., of promoted
// objects during a GC) -- requires a valid klass pointer
@ -259,7 +260,7 @@ class oopDesc {
inline bool is_forwarded() const;
inline void forward_to(oop p);
inline bool cas_forward_to(oop p, markOop compare);
inline bool cas_forward_to(oop p, markOop compare, atomic_memory_order order = memory_order_conservative);
// Like "forward_to", but inserts the forwarding pointer atomically.
// Exactly one thread succeeds in inserting the forwarding pointer, and
@ -268,6 +269,7 @@ class oopDesc {
inline oop forward_to_atomic(oop p);
inline oop forwardee() const;
inline oop forwardee_acquire() const;
// Age of object during scavenge
inline uint age() const;