46     pthread_mutex_init( &mutex_, NULL );  in JNIHelper()
54     pthread_mutex_lock( &mutex_ );  in ~JNIHelper()
64     pthread_mutex_destroy( &mutex_ );  in ~JNIHelper()
74     pthread_mutex_lock( &helper.mutex_ );  in Init()
101     pthread_mutex_unlock( &helper.mutex_ );  in Init()
120     pthread_mutex_lock( &mutex_ );  in ReadFile()
147         pthread_mutex_unlock( &mutex_ );  in ReadFile()
157             pthread_mutex_unlock( &mutex_ );  in ReadFile()
167             pthread_mutex_unlock( &mutex_ );  in ReadFile()
175         pthread_mutex_unlock( &mutex_ );  in ReadFile()
188     pthread_mutex_lock( &mutex_ );  in GetExternalFilesDir()
204     pthread_mutex_unlock( &mutex_ );  in GetExternalFilesDir()
219     pthread_mutex_lock( &mutex_ );  in LoadTexture()
245     pthread_mutex_unlock( &mutex_ );  in LoadTexture()
262     pthread_mutex_lock( &mutex_ );  in ConvertString()
284     pthread_mutex_unlock( &mutex_ );  in ConvertString()
303     pthread_mutex_lock( &mutex_ );  in GetNativeAudioBufferSize()
309     pthread_mutex_unlock( &mutex_ );  in GetNativeAudioBufferSize()
325     pthread_mutex_lock( &mutex_ );  in GetNativeAudioSampleRate()
331     pthread_mutex_unlock( &mutex_ );  in GetNativeAudioSampleRate()