1  __libc_do_syscall                            libc-do-syscall.S         46  0x756168b4 
2  futex_reltimed_wait_cancelable               futex-internal.h          142 0x7561222a 
3  __pthread_cond_wait_common                   pthread_cond_wait.c       533 0x7561222a 
4  __pthread_cond_timedwait                     pthread_cond_wait.c       667 0x7561222a 
5  QWaitConditionPrivate::wait_relative         qwaitcondition_unix.cpp   136 0x7589c56c 
6  QWaitConditionPrivate::wait                  qwaitcondition_unix.cpp   144 0x7589c56c 
7  QWaitCondition::wait                         qwaitcondition_unix.cpp   225 0x7589c56c 
8  QWaitCondition::wait                         qwaitcondition_unix.cpp   209 0x7589c758 
9  QSGRenderThreadEventQueue::takeEvent         qsgthreadedrenderloop.cpp 245 0x76c3c3d8 
10 QSGRenderThread::processEventsAndWaitForMore qsgthreadedrenderloop.cpp 710 0x76c3c3d8 
11 QSGRenderThread::run                         qsgthreadedrenderloop.cpp 739 0x76c3c794 
12 QThreadPrivate::start                        qthread_unix.cpp          361 0x75892fe0 
13 start_thread                                 pthread_create.c          458 0x7560d4a0 
14 ??                                           clone.S                   76  0x753fe80c