SoundTrigger: get service by value.

Get strong pointer to service interface by value and not reference to prevent race conditions where the service pointer can be cleared by another thread while in use. Bug: 30907212 Change-Id: I6f02ec3fd1e6392b842b334e1cc4f9aa23916009 (cherry picked from commit 3b01b30)
TheFlyhalf205 · Sep 27, 2016 · d8cf9aa · d8cf9aa
1 parent ace612c
commit d8cf9aa
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Showing 2 changed files with 5 additions and 5 deletions.
diff --git a/include/soundtrigger/SoundTrigger.h b/include/soundtrigger/SoundTrigger.h
@@ -68,7 +68,7 @@ class SoundTrigger : public BnSoundTriggerClient,
 private:
             SoundTrigger(sound_trigger_module_handle_t module,
                             const sp<SoundTriggerCallback>&);
-            static const sp<ISoundTriggerHwService>& getSoundTriggerHwService();
+            static const sp<ISoundTriggerHwService> getSoundTriggerHwService();
 
             Mutex                               mLock;
             sp<ISoundTrigger>                   mISoundTrigger;

diff --git a/soundtrigger/SoundTrigger.cpp b/soundtrigger/SoundTrigger.cpp
@@ -55,7 +55,7 @@ namespace {
     sp<DeathNotifier>         gDeathNotifier;
 }; // namespace anonymous
 
-const sp<ISoundTriggerHwService>& SoundTrigger::getSoundTriggerHwService()
+const sp<ISoundTriggerHwService> SoundTrigger::getSoundTriggerHwService()
 {
     Mutex::Autolock _l(gLock);
     if (gSoundTriggerHwService.get() == 0) {
@@ -84,7 +84,7 @@ status_t SoundTrigger::listModules(struct sound_trigger_module_descriptor *modul
                                  uint32_t *numModules)
 {
     ALOGV("listModules()");
-    const sp<ISoundTriggerHwService>& service = getSoundTriggerHwService();
+    const sp<ISoundTriggerHwService> service = getSoundTriggerHwService();
     if (service == 0) {
         return NO_INIT;
     }
@@ -96,7 +96,7 @@ sp<SoundTrigger> SoundTrigger::attach(const sound_trigger_module_handle_t module
 {
     ALOGV("attach()");
     sp<SoundTrigger> soundTrigger;
-    const sp<ISoundTriggerHwService>& service = getSoundTriggerHwService();
+    const sp<ISoundTriggerHwService> service = getSoundTriggerHwService();
     if (service == 0) {
         return soundTrigger;
     }
@@ -116,7 +116,7 @@ sp<SoundTrigger> SoundTrigger::attach(const sound_trigger_module_handle_t module
 status_t SoundTrigger::setCaptureState(bool active)
 {
     ALOGV("setCaptureState(%d)", active);
-    const sp<ISoundTriggerHwService>& service = getSoundTriggerHwService();
+    const sp<ISoundTriggerHwService> service = getSoundTriggerHwService();
     if (service == 0) {
         return NO_INIT;
     }