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| author | Mathieu Chartier <mathieuc@google.com> | 2013-10-31 10:35:05 -0700 |
|---|---|---|
| committer | Mathieu Chartier <mathieuc@google.com> | 2013-10-31 13:33:51 -0700 |
| commit | 4e6a31eb97f22f4480827474b30b9e64f396eace (patch) | |
| tree | 3afe222c60314a22be8bb8de61cb245e1af2dc92 /runtime/lock_word.h | |
| parent | 1b8cb967143d5c46db1db8ac940a73d111be3628 (diff) | |
| download | art-4e6a31eb97f22f4480827474b30b9e64f396eace.zip art-4e6a31eb97f22f4480827474b30b9e64f396eace.tar.gz art-4e6a31eb97f22f4480827474b30b9e64f396eace.tar.bz2 | |
Lazily compute object identity hash codes.
Before, we computed identity hashcodes whenever we inflated a monitor.
This caused issues since it meant that we would have all of these
hash codes in the image, causing locks to excessively inflate during
application run time.
This change makes it so that we lazily compute hash codes. When a
thin lock gets inflated, we assign a hash code of 0 assigned to it.
This value signifies no hash code. When we try to get the identity
hash code of an object with an inflated monitor, it gets computed if
it is 0.
Change-Id: Iae6acd1960515a36e74644e5b1323ff336731806
Diffstat (limited to 'runtime/lock_word.h')
| -rw-r--r-- | runtime/lock_word.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/runtime/lock_word.h b/runtime/lock_word.h index 9b6c64a..1882ae6 100644 --- a/runtime/lock_word.h +++ b/runtime/lock_word.h @@ -132,7 +132,7 @@ class LockWord { } // Return the hash code stored in the lock word, must be kHashCode state. - uint32_t GetHashCode() const; + int32_t GetHashCode() const; uint32_t GetValue() const { return value_; |