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| author | Yabin Cui <yabinc@google.com> | 2015-03-17 14:22:09 -0700 |
|---|---|---|
| committer | Yabin Cui <yabinc@google.com> | 2015-04-08 13:11:13 -0700 |
| commit | 76615dae93c18ac890e167c547a08c0228709a33 (patch) | |
| tree | 12a7e87c6fb332bebc087f43bcf29b2f7827571e /libc/malloc_hooks/tests/malloc_hooks_tests.cpp | |
| parent | 4bd8f9637daaada333ff35945b00cfe6cb822376 (diff) | |
Provide writer preference option in rwlock.
Previous implementation of rwlock contains four atomic variables, which
is hard to maintain and change. So I make following changes in this CL:
1. Add pending flags in rwlock.state, so we don't need to synchronize
between different atomic variables. Using compare_and_swap operations
on rwlock.state is enough for all state change.
2. Add pending_lock to protect readers/writers waiting and wake up
operations. As waiting/wakeup is not performance critical, using a
lock is easier to maintain.
3. Add writer preference option.
4. Add unit tests for rwlock.
Bug: 19109156
Change-Id: Idcaa58d695ea401d64445610b465ac5cff23ec7c
Diffstat (limited to 'libc/malloc_hooks/tests/malloc_hooks_tests.cpp')
0 files changed, 0 insertions, 0 deletions