长时间不间断播放礼物，主线程死锁

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复现场景：不间断播放，大概4小时会主线程死锁 设备：中低端机（7P，8都能复现） 死锁时的线程信息： thread #1, queue = 'gputools.GTSharedMemoryTransport_capture.0x11a205b90.send', stop reason = signal SIGSTOP frame #0: 0x00000001bd61d088 libsystem_kernel.dylib__semwait_signal + 8 frame #1: 0x000000018d9dc8e0 libsystem_c.dylibnanosleep + 212 frame #2: 0x000000018d9dd5a8 libsystem_c.dylibusleep + 64 frame #3: 0x0000000119325f08 libMTLCapture.dylib___lldb_unnamed_symbol2578$$libMTLCapture.dylib + 40 frame #4: 0x0000000119323dac libMTLCapture.dylib___lldb_unnamed_symbol2531$$libMTLCapture.dylib + 272 frame #5: 0x000000011932426c libMTLCapture.dylib___lldb_unnamed_symbol2533$$libMTLCapture.dylib + 424 frame #6: 0x000000011932244c libMTLCapture.dylib___lldb_unnamed_symbol2478$$libMTLCapture.dylib + 100 frame #7: 0x0000000118f85f94 libdispatch.dylib_dispatch_client_callout + 16 frame #8: 0x0000000118f95af0 libdispatch.dylib_dispatch_sync_invoke_and_complete_recurse + 128 frame #9: 0x00000001193222d8 libMTLCapture.dylib___lldb_unnamed_symbol2475$$libMTLCapture.dylib + 524 frame #10: 0x0000000119324d94 libMTLCapture.dylib___lldb_unnamed_symbol2557$$libMTLCapture.dylib + 232 frame #11: 0x00000001192d6840 libMTLCapture.dylib___lldb_unnamed_symbol1079$$libMTLCapture.dylib + 120 frame #12: 0x0000000119289b34 libMTLCapture.dylib___lldb_unnamed_symbol160$$libMTLCapture.dylib + 376 frame #13: 0x0000000119288c14 libMTLCapture.dylib___lldb_unnamed_symbol155$$libMTLCapture.dylib + 196 frame #14: 0x0000000186fade08 QuartzCoreCA::release_objects(X::List<void const*>*) + 32 frame #15: 0x0000000186fe8654 QuartzCoreCA::release_root_if_unused(CA::Layer*, CA::Layer*, void*) + 92 frame #16: 0x0000000187080b94 QuartzCorex_hash_table_remove_if + 88 frame #17: 0x0000000186fcae68 QuartzCoreCA::Transaction::commit() + 460 frame #18: 0x0000000186faea14 QuartzCoreCA::Transaction::flush_as_runloop_observer(bool) + 84 frame #19: 0x00000001834a2fc4 CoreFoundationCFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION + 32 frame #20: 0x0000000183474608 CoreFoundation__CFRunLoopDoObservers + 588 frame #21: 0x000000018346fb9c CoreFoundation__CFRunLoopRun + 1012 frame #22: 0x0000000183482e1c CoreFoundationCFRunLoopRunSpecific + 572 frame #23: 0x00000001a38259a0 GraphicsServicesGSEventRunModal + 160 frame #24: 0x0000000185cb6b90 UIKitCore-[UIApplication _run] + 1080 frame #25: 0x0000000185a4c16c UIKitCoreUIApplicationMain + 332 frame #26: 0x00000001021faa40 OneDemoAppmain(argc=1, argv=0x000000016dd1b790) at main.m:17:12 frame #27: 0x0000000119074250 dyldstart + 444

• thread #3, name = 'gputools.smt_poll.0x280924780'
  • frame #0: 0x00000001bd61d088 libsystem_kernel.dylib__semwait_signal + 8 frame #1: 0x000000018d9dc8e0 libsystem_c.dylibnanosleep + 212 frame #2: 0x000000018d9dd5a8 libsystem_c.dylibusleep + 64 frame #3: 0x00000001193255b8 libMTLCapture.dylib___lldb_unnamed_symbol2567$$libMTLCapture.dylib + 104 frame #4: 0x00000001ddb3d3a4 libsystem_pthread.dylib`_pthread_start + 116

看着应该是gpu线程block了主线程