audioserver: Initialize services before making public.
This avoids inconsistencies and TimeCheck aborts when
the AudioFlinger interface is made public before
AudioPolicy is initialized.
Test: boot, check logcat, kill audioserver, check logcat
Bug: 240234432
Bug: 262821105
Change-Id: I2259105eb86110fafe4e3d7ba5820f6557382447
diff --git a/media/audioserver/main_audioserver.cpp b/media/audioserver/main_audioserver.cpp
index e3db5b4..a45ce28 100644
--- a/media/audioserver/main_audioserver.cpp
+++ b/media/audioserver/main_audioserver.cpp
@@ -50,6 +50,8 @@
int main(int argc __unused, char **argv)
{
+ ALOGD("%s: starting", __func__);
+ const auto startTime = std::chrono::steady_clock::now();
// TODO: update with refined parameters
limitProcessMemory(
"audio.maxmem", /* "ro.audio.maxmem", property that defines limit */
@@ -144,11 +146,35 @@
setpgid(0, 0); // but if I die first, don't kill my parent
}
android::hardware::configureRpcThreadpool(4, false /*callerWillJoin*/);
- sp<ProcessState> proc(ProcessState::self());
+
+ // Ensure threads for possible callbacks. Note that get_audio_flinger() does
+ // this automatically when called from AudioPolicy, but we do this anyways here.
+ ProcessState::self()->startThreadPool();
+
+ // Instantiating AudioFlinger (making it public, e.g. through ::initialize())
+ // and then instantiating AudioPolicy (and making it public)
+ // leads to situations where AudioFlinger is accessed remotely before
+ // AudioPolicy is initialized. Not only might this
+ // cause inaccurate results, but if AudioPolicy has slow audio HAL
+ // initialization, it can cause a TimeCheck abort to occur on an AudioFlinger
+ // call which tries to access AudioPolicy.
+ //
+ // We create AudioFlinger and AudioPolicy locally then make it public to ServiceManager.
+ // This requires both AudioFlinger and AudioPolicy to be in-proc.
+ //
+ const auto af = sp<AudioFlinger>::make();
+ const auto afAdapter = sp<AudioFlingerServerAdapter>::make(af);
+ ALOGD("%s: AudioFlinger created", __func__);
+ AudioSystem::setAudioFlingerBinder(afAdapter);
+ const auto aps = sp<AudioPolicyService>::make();
+ ALOGD("%s: AudioPolicy created", __func__);
+
+ // Add AudioFlinger and AudioPolicy to ServiceManager.
sp<IServiceManager> sm = defaultServiceManager();
- ALOGI("ServiceManager: %p", sm.get());
- AudioFlinger::instantiate();
- AudioPolicyService::instantiate();
+ sm->addService(String16(IAudioFlinger::DEFAULT_SERVICE_NAME), afAdapter,
+ false /* allowIsolated */, IServiceManager::DUMP_FLAG_PRIORITY_DEFAULT);
+ sm->addService(String16(AudioPolicyService::getServiceName()), aps,
+ false /* allowIsolated */, IServiceManager::DUMP_FLAG_PRIORITY_DEFAULT);
// AAudioService should only be used in OC-MR1 and later.
// And only enable the AAudioService if the system MMAP policy explicitly allows it.
@@ -156,7 +182,6 @@
// If we cannot get audio flinger here, there must be some serious problems. In that case,
// attempting to call audio flinger on a null pointer could make the process crash
// and attract attentions.
- sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
std::vector<AudioMMapPolicyInfo> policyInfos;
status_t status = af->getMmapPolicyInfos(
AudioMMapPolicyType::DEFAULT, &policyInfos);
@@ -169,11 +194,14 @@
})) {
AAudioService::instantiate();
} else {
- ALOGD("Do not init aaudio service, status %d, policy info size %zu",
- status, policyInfos.size());
+ ALOGD("%s: Do not init aaudio service, status %d, policy info size %zu",
+ __func__, status, policyInfos.size());
}
-
- ProcessState::self()->startThreadPool();
+ const auto endTime = std::chrono::steady_clock::now();
+ using FloatMillis = std::chrono::duration<float, std::milli>;
+ const float timeTaken = std::chrono::duration_cast<FloatMillis>(
+ endTime - startTime).count();
+ ALOGI("%s: initialization done in %.3f ms, joining thread pool", __func__, timeTaken);
IPCThreadState::self()->joinThreadPool();
}
}
diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h
index 173f0c9..100d8c7 100644
--- a/services/audioflinger/AudioFlinger.h
+++ b/services/audioflinger/AudioFlinger.h
@@ -140,6 +140,7 @@
class AudioFlinger : public AudioFlingerServerAdapter::Delegate
{
+ friend class sp<AudioFlinger>;
public:
static void instantiate() ANDROID_API;
diff --git a/services/audiopolicy/service/AudioPolicyService.h b/services/audiopolicy/service/AudioPolicyService.h
index 8b23ede..31d5249 100644
--- a/services/audiopolicy/service/AudioPolicyService.h
+++ b/services/audiopolicy/service/AudioPolicyService.h
@@ -70,7 +70,7 @@
public IBinder::DeathRecipient,
public SpatializerPolicyCallback
{
- friend class BinderService<AudioPolicyService>;
+ friend class sp<AudioPolicyService>;
public:
// for BinderService