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| author | Hiroshi Yamauchi <yamauchi@google.com> | 2014-06-18 13:47:35 -0700 |
|---|---|---|
| committer | Hiroshi Yamauchi <yamauchi@google.com> | 2014-06-20 11:23:58 -0700 |
| commit | ea2e1bd713ca8295ba4fcd01e77a3ce532ea61e4 (patch) | |
| tree | d41be4b08041c5a2b1af626d8cdf6b69280723d5 /runtime/read_barrier.h | |
| parent | 241fd1192dfc0f7322660343179f9fc0591ed9ff (diff) | |
| download | art-ea2e1bd713ca8295ba4fcd01e77a3ce532ea61e4.zip art-ea2e1bd713ca8295ba4fcd01e77a3ce532ea61e4.tar.gz art-ea2e1bd713ca8295ba4fcd01e77a3ce532ea61e4.tar.bz2 | |
Add more read barriers for JNI roots.
To make it possible to concurrently scan the JNI global roots (that
is, the roots visited by JavaVMExt::VisitRoots()), add read barriers
to the indirect reference table and the reference table.
Also, add read barriers to the jmethodID/jfieldID decode routines
(ScopedObjectAccessAlreadyRunnable::DecodeField/DecodeMethod) so that
we can concurrently handle (encoded) fields and methods.
Bug: 12687968
Change-Id: I3df4e4e622a572ff0ea8d44b2dc70a4d6b3ba058
Diffstat (limited to 'runtime/read_barrier.h')
| -rw-r--r-- | runtime/read_barrier.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/runtime/read_barrier.h b/runtime/read_barrier.h index 451d13c..ed5db4e 100644 --- a/runtime/read_barrier.h +++ b/runtime/read_barrier.h @@ -33,11 +33,15 @@ namespace mirror { class ReadBarrier { public: + // It's up to the implementation whether the given field gets + // updated whereas the return value must be an updated reference. template <typename MirrorType, ReadBarrierOption kReadBarrierOption = kWithReadBarrier> ALWAYS_INLINE static MirrorType* Barrier( mirror::Object* obj, MemberOffset offset, mirror::HeapReference<MirrorType>* ref_addr) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); + // It's up to the implementation whether the given root gets updated + // whereas the return value must be an updated reference. template <typename MirrorType, ReadBarrierOption kReadBarrierOption = kWithReadBarrier> ALWAYS_INLINE static MirrorType* BarrierForRoot(MirrorType** root) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |