iOS 应用程序使现场死锁无处不在-解网

问：

我有一个原生 B2B 应用程序，通过 MDM 分发到美国各地的多个地点，这些单元是 24/7 全天候运行的，是供人们使用的公共终端。该应用程序还通过引导式访问锁定到位。

在过去的几周里，我们遇到了应用程序会冻结的问题，我一直在用头撞墙，试图找出原因。它主要发生在蜂窝 iPad 上，但并非唯一如此。应用程序中也没有冻结的特定位置，因此我不确定是否有任何特别的东西阻塞了主线程。

我无法让它在房子里冻结，它只发生在现场。并且已经尝试了一切方法来冻结它，通过自动执行数百个操作，更改网络限制器以查看后台是否有未正确处理的呼叫。我已经运行了仪器以查看iPad是否内存不足，但我认为这会导致应用程序崩溃而不是冻结。

我添加了更多日志记录，以及 New Relic 移动 SDK 来尝试捕获某些内容，但我没有看到任何异常。

它工作得很好，然后这些iPad自动更新到14.4-14.6。

有没有人知道原因可能是什么，或者这些iPadOS版本是否有问题？任何建议都会非常有帮助，这让我发疯了。

更新：

我已经让它冻结了，这是我暂停时它的位置

回溯：

 * thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
  * frame #0: 0x00000001c87e6908 libsystem_kernel.dylib`mach_msg_trap + 8
    frame #1: 0x00000001c87e5d0c libsystem_kernel.dylib`mach_msg + 72
    frame #2: 0x000000019d05be00 CoreFoundation`__CFRunLoopServiceMachPort + 368
    frame #3: 0x000000019d056200 CoreFoundation`__CFRunLoopRun + 1184
    frame #4: 0x000000019d055818 CoreFoundation`CFRunLoopRunSpecific + 572
    frame #5: 0x00000001b375b570 GraphicsServices`GSEventRunModal + 160
    frame #6: 0x000000019f9810e8 UIKitCore`-[UIApplication _run] + 1052
    frame #7: 0x000000019f986664 UIKitCore`UIApplicationMain + 164
    frame #8: 0x0000000102b8e538 Application`main(argc=<unavailable>, argv=<unavailable>) at main.m:14:16 [opt]
    frame #9: 0x000000019cd34140 libdyld.dylib`start + 4
 
* thread #3, name = 'gputools.smt_poll.0x2838a1e20'
  * frame #0: 0x00000001c880ab54 libsystem_kernel.dylib`__semwait_signal + 8
    frame #1: 0x00000001a5cfead4 libsystem_c.dylib`nanosleep + 212
    frame #2: 0x00000001a5cfe9ac libsystem_c.dylib`usleep + 64
    frame #3: 0x000000010993e5cc GPUToolsCore`smt_poll_thread_entry(void*) + 144
    frame #4: 0x00000001e4a37c74 libsystem_pthread.dylib`_pthread_start + 288
 
* thread #4, name = 'gputools.smt_poll.0x28389eec0'
  * frame #0: 0x00000001c880ab54 libsystem_kernel.dylib`__semwait_signal + 8
    frame #1: 0x00000001a5cfead4 libsystem_c.dylib`nanosleep + 212
    frame #2: 0x00000001a5cfe9ac libsystem_c.dylib`usleep + 64
    frame #3: 0x0000000103c36fe8 libMTLCapture.dylib`___lldb_unnamed_symbol2228$$libMTLCapture.dylib + 104
    frame #4: 0x00000001e4a37c74 libsystem_pthread.dylib`_pthread_start + 288
 
* thread #9, name = 'com.apple.uikit.eventfetch-thread'
  * frame #0: 0x00000001c87e6908 libsystem_kernel.dylib`mach_msg_trap + 8
    frame #1: 0x00000001c87e5d0c libsystem_kernel.dylib`mach_msg + 72
    frame #2: 0x000000019d05be00 CoreFoundation`__CFRunLoopServiceMachPort + 368
    frame #3: 0x000000019d056200 CoreFoundation`__CFRunLoopRun + 1184
    frame #4: 0x000000019d055818 CoreFoundation`CFRunLoopRunSpecific + 572
    frame #5: 0x000000019e2b2094 Foundation`-[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 228
    frame #6: 0x000000019e2b1f74 Foundation`-[NSRunLoop(NSRunLoop) runUntilDate:] + 88
    frame #7: 0x000000019fa2dc28 UIKitCore`-[UIEventFetcher threadMain] + 504
    frame #8: 0x000000019e40edb0 Foundation`__NSThread__start__ + 848
    frame #9: 0x00000001e4a37c74 libsystem_pthread.dylib`_pthread_start + 288
 
* thread #11
  * frame #0: 0x00000001c880a580 libsystem_kernel.dylib`__psynch_cvwait + 8
    frame #1: 0x00000001e4a31308 libsystem_pthread.dylib`_pthread_cond_wait$VARIANT$mp + 1236
    frame #2: 0x00000001b0eb1a20 libc++.1.dylib`std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 24
    frame #3: 0x00000001054ec4d0 NewRelic`___lldb_unnamed_symbol3677$$NewRelic + 240
    frame #4: 0x00000001054eca60 NewRelic`___lldb_unnamed_symbol3699$$NewRelic + 28
    frame #5: 0x00000001054ecc08 NewRelic`___lldb_unnamed_symbol3702$$NewRelic + 72
    frame #6: 0x00000001e4a37c74 libsystem_pthread.dylib`_pthread_start + 288
 
* thread #12
  * frame #0: 0x00000001c880a580 libsystem_kernel.dylib`__psynch_cvwait + 8
    frame #1: 0x00000001e4a31308 libsystem_pthread.dylib`_pthread_cond_wait$VARIANT$mp + 1236
    frame #2: 0x00000001b0eb1a20 libc++.1.dylib`std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 24
    frame #3: 0x00000001054ec4d0 NewRelic`___lldb_unnamed_symbol3677$$NewRelic + 240
    frame #4: 0x00000001054eca60 NewRelic`___lldb_unnamed_symbol3699$$NewRelic + 28
    frame #5: 0x00000001054ecc08 NewRelic`___lldb_unnamed_symbol3702$$NewRelic + 72
    frame #6: 0x00000001e4a37c74 libsystem_pthread.dylib`_pthread_start + 288
 
* thread #13
  * frame #0: 0x00000001c880a580 libsystem_kernel.dylib`__psynch_cvwait + 8
    frame #1: 0x00000001e4a31308 libsystem_pthread.dylib`_pthread_cond_wait$VARIANT$mp + 1236
    frame #2: 0x00000001b0eb1a20 libc++.1.dylib`std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 24
    frame #3: 0x00000001054ec4d0 NewRelic`___lldb_unnamed_symbol3677$$NewRelic + 240
    frame #4: 0x00000001054eca60 NewRelic`___lldb_unnamed_symbol3699$$NewRelic + 28
    frame #5: 0x00000001054ecc08 NewRelic`___lldb_unnamed_symbol3702$$NewRelic + 72
    frame #6: 0x00000001e4a37c74 libsystem_pthread.dylib`_pthread_start + 288
 
* thread #14, name = 'AVAudioSession Notify Thread'
  * frame #0: 0x00000001c87e6908 libsystem_kernel.dylib`mach_msg_trap + 8
    frame #1: 0x00000001c87e5d0c libsystem_kernel.dylib`mach_msg + 72
    frame #2: 0x000000019d05be00 CoreFoundation`__CFRunLoopServiceMachPort + 368
    frame #3: 0x000000019d056200 CoreFoundation`__CFRunLoopRun + 1184
    frame #4: 0x000000019d055818 CoreFoundation`CFRunLoopRunSpecific + 572
    frame #5: 0x00000001a44dff18 AudioSession`GenericRunLoopThread::Entry(void*) + 156
    frame #6: 0x00000001a44e1e84 AudioSession`CAPThread::Entry(CAPThread*) + 88
    frame #7: 0x00000001e4a37c74 libsystem_pthread.dylib`_pthread_start + 288
 
* thread #15
  * frame #0: 0x00000001c87e6908 libsystem_kernel.dylib`mach_msg_trap + 8
    frame #1: 0x00000001c87e5d0c libsystem_kernel.dylib`mach_msg + 72
    frame #2: 0x000000019d05be00 CoreFoundation`__CFRunLoopServiceMachPort + 368
    frame #3: 0x000000019d056200 CoreFoundation`__CFRunLoopRun + 1184
    frame #4: 0x000000019d055818 CoreFoundation`CFRunLoopRunSpecific + 572
    frame #5: 0x000000019e2b2094 Foundation`-[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 228
    frame #6: 0x0000000102f73758 Application`-[CH3_GenericChannelController keepThreadAlive](self=0x0000000280f89ad0, _cmd=<unavailable>) at CH3_GenericChannelController.mm:288:37 [opt]
    frame #7: 0x000000019e40edb0 Foundation`__NSThread__start__ + 848
    frame #8: 0x00000001e4a37c74 libsystem_pthread.dylib`_pthread_start + 288
 
* thread #16
  * frame #0: 0x00000001c87e6908 libsystem_kernel.dylib`mach_msg_trap + 8
    frame #1: 0x00000001c87e5d0c libsystem_kernel.dylib`mach_msg + 72
    frame #2: 0x000000019d05be00 CoreFoundation`__CFRunLoopServiceMachPort + 368
    frame #3: 0x000000019d056200 CoreFoundation`__CFRunLoopRun + 1184
    frame #4: 0x000000019d055818 CoreFoundation`CFRunLoopRunSpecific + 572
    frame #5: 0x000000019e2b2094 Foundation`-[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 228
    frame #6: 0x0000000102f73758 Application`-[CH3_GenericChannelController keepThreadAlive](self=0x0000000280f89ad0, _cmd=<unavailable>) at CH3_GenericChannelController.mm:288:37 [opt]
    frame #7: 0x000000019e40edb0 Foundation`__NSThread__start__ + 848
    frame #8: 0x00000001e4a37c74 libsystem_pthread.dylib`_pthread_start + 288
 
* thread #48
  * frame #0: 0x00000001e4a3c864 libsystem_pthread.dylib`start_wqthread
 
* thread #77
  * frame #0: 0x00000001e4a3c864 libsystem_pthread.dylib`start_wqthread
 
* thread #83
  * frame #0: 0x00000001e4a3c864 libsystem_pthread.dylib`start_wqthread
 
* thread #84
  * frame #0: 0x00000001e4a3c864 libsystem_pthread.dylib`start_wqthread
(lldb)

iOS Objective-C iPad MDM、 iPadOS

答： 暂无答案

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