| commit | a2934d5ff0b5c4098408cd583c2c259edf37c118 | [log] [tgz] |
|---|---|---|
| author | Jeff Sharkey <jsharkey@android.com> | Fri Jun 14 14:43:18 2013 -0700 |
| committer | Jeff Sharkey <jsharkey@android.com> | Fri Jun 14 16:15:31 2013 -0700 |
| tree | 4c4d9800a68aa98a611913d14c6fa6cb17523792 | |
| parent | b28f8c82d92b06e7eba3bcb5b5c2e9757597a7c9 [diff] |
Cache AndroidBlockGuardPolicy to avoid allocation. Every incoming Binder call ends up triggering a BlockGuardPolicy update, which would thrash between new AndroidBlockGuardPolicy instances and BlockGuard.LAX_POLICY, causing GC churn. This change avoids the extra allocations by recycling a single AndroidBlockGuardPolicy in a ThreadLocal. Worst-case thrashing case is now 10% faster; from 7.46us to 6.65us. Bug: 9424568 Change-Id: I9c3b1c097a2aecc9b1f109a824cf3ea319fb3393