commit 328d6774ba2a3526a437532832df5781812d123b
author Andy Hung <hunga@google.com> Tue Jan 12 12:32:21 2021 -0800
committer Andy Hung <hunga@google.com> Fri Jan 15 14:31:06 2021 -0800
tree 163affc905b0b54b4c009022361add1fcf7e36c8
parent d8888d48f512f894182848f3d7076b8c6a68fa95

Effects: Add atomic_wp<T>, update setThread.

atomic_wp<T> is used to allow concurrent read and write to the wp<>.
We use this to fix EffectCallback::setThread to resolve multithreaded
access to the wp<T>.

Note that setThread is used for EffectChain migration between
PlaybackThreads; we also need to refine higher level transactional
locking to ensure enable/disable of effect is done consistently
during migration.

Test: basic audio works
Test: atest media_synchronization_tests
Test: AudioEffectTest AudioPreProcessingTest BassBoostTest
Test: EnvReverbTest EqualizerTest LoudnessEnhancerTest
Test: PresetReverbTest VirtualizerTest VisualizerTest
Bug: 161341295
Change-Id: If80ee4373859c832d6fd10fec0385d69064f50c6