OSSpinLockLock是反复出现的，lldb没有显示适当的callStackSymbols。
以下是我从Xcode Version 5.0.1（5A2034a）的lldb获得的内容
我尝试通过[NSThread callStackSymbols]获取更多符号，但在这种情况下无效。
只有SpriteKit（iOS7）才会发生这种情况。我已经在SKEmitterNodes周围检查了几十次，但内部没有任何错误。 很不错，有时候复制带有：消息不能在高速弹丸中正常运行如下：
SKEmitterNode * template = [NSKeyedUnarchiver unarchiveObjectWithFile：[[NSBundle mainBundle] pathForResource：@“cannonball_flame”ofType：@“sks”]]; .... ... [模板复制]; // - ＆gt;在某些情况下不好
有谁知道解决这个问题？它是由SpriteKit bug引起的吗？
02NOV2013 1:31 AM 调用堆栈0
libsystem_platform.dylib`OSSpinLockLock:
0x38ef1654: movs r1, #1
libsystem_platform.dylib`spin_lock + 2:
0x38ef1656: ldrex r2, [r0]
0x38ef165a: cmp r2, #0
0x38ef165c: it ne
0x38ef165e: bne.w 0x38ef4a94 ; _OSSpinLockLockSlow$shim
0x38ef1662: strex r2, r1, [r0]
0x38ef1666: cmp r2, #0
0x38ef1668: bne 0x38ef1656 ; spin_lock + 2
0x38ef166a: dmb ish
0x38ef166e: bx lr
call stack 1
SpriteKit`SKSpinLockSync(int*, void () block_pointer):
0x30c2d924: push {r4, r5, r6, r7, lr}
0x30c2d926: add r7, sp, #12
0x30c2d928: push.w {r8, r10, r11}
0x30c2d92c: sub.w r4, sp, #64
0x30c2d930: bic r4, r4, #15
0x30c2d934: mov sp, r4
0x30c2d936: vst1.64 {d8, d9, d10, d11}, [r4, :128]!
0x30c2d93a: vst1.64 {d12, d13, d14, d15}, [r4, :128]
0x30c2d93e: sub sp, #64
0x30c2d940: mov r4, r0
0x30c2d942: mov r0, r1
0x30c2d944: str r4, [sp, #4]
0x30c2d946: blx 0x30c44114 ; symbol stub for: dispatch_async$shim
0x30c2d94a: movw r2, #1712
0x30c2d94e: ldr r1, [pc, #140] ; SKSpinLockSync(int*, void () block_pointer) + 184
0x30c2d950: movt r2, #2171
0x30c2d954: str r0, [sp, #8]
0x30c2d956: add r0, sp, #12
0x30c2d958: add r2, pc
0x30c2d95a: ldr r2, [r2]
0x30c2d95c: add r1, pc
0x30c2d95e: str r2, [sp, #36]
0x30c2d960: str r1, [sp, #40]
0x30c2d962: ldr r1, [pc, #124] ; SKSpinLockSync(int*, void () block_pointer) + 188
0x30c2d964: str r7, [sp, #44]
0x30c2d966: str.w sp, [sp, #52]
0x30c2d96a: orr r1, r1, #1
0x30c2d96e: add r1, pc
0x30c2d970: str r1, [sp, #48]
0x30c2d972: movs r1, #1
0x30c2d974: str r1, [sp, #16]
0x30c2d976: blx 0x30c44274 ; symbol stub for: SKCRenderPassNew::operator=(SKCRenderPassNew const&)
0x30c2d97a: mov r0, r4
0x30c2d97c: blx 0x30c44234 ; symbol stub for: +[SKOpenGLNode openGLNodeWithViewportSize:]
0x30c2d980: ldr r0, [sp, #8]
0x30c2d982: movs r2, #2
0x30c2d984: ldr r1, [r0, #12]
0x30c2d986: ldr r0, [sp, #8]
0x30c2d988: str r2, [sp, #16]
0x30c2d98a: blx r1
0x30c2d98c: movs r0, #3
0x30c2d98e: str r0, [sp, #16]
0x30c2d990: ldr r0, [sp, #4]
0x30c2d992: blx 0x30c44244 ; symbol stub for: -[SKOpenGLNode needsRenderForTime:]
0x30c2d996: ldr r0, [sp, #8]
0x30c2d998: blx 0x30c44104 ; symbol stub for: objc_copyWeak$shim
0x30c2d99c: add r0, sp, #12
0x30c2d99e: blx 0x30c44294 ; symbol stub for: SKCRenderPassNew::~SKCRenderPassNew()
0x30c2d9a2: add r4, sp, #64
0x30c2d9a4: vld1.64 {d8, d9, d10, d11}, [r4, :128]!
0x30c2d9a8: vld1.64 {d12, d13, d14, d15}, [r4, :128]
0x30c2d9ac: sub.w r4, r7, #24
0x30c2d9b0: mov sp, r4
0x30c2d9b2: pop.w {r8, r10, r11}
0x30c2d9b6: pop {r4, r5, r6, r7, pc}
0x30c2d9b8: ldr r0, [sp, #16]
0x30c2d9ba: cmp r0, #3
0x30c2d9bc: bls 0x30c2d9c0 ; SKSpinLockSync(int*, void () block_pointer) + 156
0x30c2d9be: trap
0x30c2d9c0: tbb [pc, r0]
0x30c2d9c4: lsls r2, r0, #8
0x30c2d9c6: movs r2, r0
0x30c2d9c8: ldr r4, [sp, #20]
0x30c2d9ca: ldr r0, [sp, #8]
0x30c2d9cc: blx 0x30c44104 ; symbol stub for: objc_copyWeak$shim
0x30c2d9d0: mov.w r0, #4294967295
0x30c2d9d4: str r0, [sp, #16]
0x30c2d9d6: mov r0, r4
0x30c2d9d8: blx 0x30c44284 ; symbol stub for: SKCRenderPassNew::~SKCRenderPassNew()
0x30c2d9dc: ldr r3, [sp, #400]
0x30c2d9de: movs r1, r0
0x30c2d9e0: lsls r6, r0, #1
0x30c2d9e2: movs r0, r0
didBeginContact: Hit Tree
(lldb) po [NSThread callStackSymbols]
<_NSCallStackArray 0x7f9fe40>(
0 ??? 0x00571654 0x0 + 5707348,
1 NaughtyBirds 0x000e7175 main + 0,
2 SpriteKit 0x30bf38fd <redacted> + 300,
3 SpriteKit 0x30bf67ef <redacted> + 42,
4 SpriteKit 0x30c163a5 <redacted> + 3136,
5 SpriteKit 0x30c262ab <redacted> + 354,
6 SpriteKit 0x30c262ab <redacted> + 354,
7 SpriteKit 0x30c262ab <redacted> + 354,
8 SpriteKit 0x30beeb93 <redacted> + 174,
9 SpriteKit 0x30c03449 <redacted> + 324,
10 SpriteKit 0x30c00add <redacted> + 820,
11 SpriteKit 0x30bfe51b <redacted> + 130,
12 SpriteKit 0x30c20c87 <redacted> + 254,
13 libglInterpose.dylib 0x002bb5ff -[DYDisplayLinkInterposer forwardDisplayLinkCallback:] + 270,
14 QuartzCore 0x309dfad3 <redacted> + 98,
15 QuartzCore 0x309df87d <redacted> + 344,
16 IOMobileFramebuffer 0x3360f76d <redacted> + 104,
17 IOKit 0x2f266be5 IODispatchCalloutFromCFMessage + 248,
18 CoreFoundation 0x2e544b81 <redacted> + 136,
19 CoreFoundation 0x2e54f777 <redacted> + 34,
20 CoreFoundation 0x2e54f713 <redacted> + 346,
21 CoreFoundation 0x2e54dedf <redacted> + 1406,
22 CoreFoundation 0x2e4b8471 CFRunLoopRunSpecific + 524,
23 CoreFoundation 0x2e4b8253 CFRunLoopRunInMode + 106,
24 GraphicsServices 0x331f22eb GSEventRunModal + 138,
25 UIKit 0x30d6d845 UIApplicationMain + 1136,
26 NaughtyBirds 0x000e7259 main + 228,
27 libdyld.dylib 0x38ddaab7 <redacted> + 2
）
（lldb）bt all
* thread＃1：tid = 0xcf5af，0x38ef1656 libsystem_platform.dylib spin_lock + 2, queue = 'com.apple.main-thread, stop reason = EXC_BAD_ACCESS (code=1, address=0x0)
frame #0: 0x38ef1656 libsystem_platform.dylib spin_lock + 2
帧＃1：0x30c2d980 SpriteKit SKSpinLockSync(int*, void () block_pointer) + 92
frame #2: 0x30bf38fc SpriteKit - [SKTexture loadImageData] + 300
帧＃3：0x30bf67ee SpriteKit -[SKTexture size] + 42
frame #4: 0x30c163a4 SpriteKit SKCEmitterSprite :: update（double）+ 3136
帧＃5：0x30c262aa SpriteKit SKCSprite::update(double) + 354
frame #6: 0x30c262aa SpriteKit SKCSprite :: update（double）+ 354
帧＃7：0x30c262aa SpriteKit SKCSprite::update(double) + 354
frame #8: 0x30beeb92 SpriteKit - [SKScene _update：] + 174
帧＃9：0x30c03448 SpriteKit -[SKView(Private) _update:] + 324
frame #10: 0x30c00adc SpriteKit - [SKView renderCallback：] + 820
帧＃11：0x30bfe51a SpriteKit __29-[SKView setUpRenderCallback]_block_invoke + 130
frame #12: 0x30c20c86 SpriteKit - [SKDisplayLink callbackForNextFrame：] + 254
帧＃13：0x002bb5fe libglInterpose.dylib -[DYDisplayLinkInterposer forwardDisplayLinkCallback:] + 270
frame #14: 0x309dfad2 QuartzCore CA :: Display :: DisplayLinkItem :: dispatch（）+ 98
帧＃15：0x309df87c QuartzCore CA::Display::DisplayLink::dispatch_items(unsigned long long, unsigned long long, unsigned long long) + 344
frame #16: 0x3360f76c IOMobileFramebuffer IOMobileFramebufferVsyncNotifyFunc + 104
帧＃17：0x2f266be4 IOKit IODispatchCalloutFromCFMessage + 248
frame #18: 0x2e544b80 CoreFoundation _CFMachPortPerform + 136
帧＃19：0x2e54f776 CoreFoundation __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 34
frame #20: 0x2e54f712 CoreFoundation __ CFRunLoopDoSource1 + 346
帧＃21：0x2e54dede CoreFoundation __CFRunLoopRun + 1406
frame #22: 0x2e4b8470 CoreFoundation CFRunLoopRunSpecific + 524
帧＃23：0x2e4b8252 CoreFoundation CFRunLoopRunInMode + 106
frame #24: 0x331f22ea GraphicsServices GSEventRunModal + 138
帧＃25：0x30d6d844 UIKit UIApplicationMain + 1136
frame #26: 0x000e7258 NaughtyBirds main（argc = 1，argv = 0x27d2bc4c）+ 228 at main.m:18
线程＃5：tid = 0xcf5de，0x38e91550 libsystem_kernel.dylib __semwait_signal + 24, name = 'gputools.smt_poll.0x15d305b0
frame #0: 0x38e91550 libsystem_kernel.dylib __ semwait_signal + 24
帧＃1：0x38e024ec libsystem_c.dylib nanosleep + 172
frame #2: 0x38e0243c libsystem_c.dylib usleep + 52
帧＃3：0x00350ad0 GPUToolsCore smt_poll_thread_entry(void*) + 124
frame #4: 0x38ef7c5c libsystem_pthread.dylib _ pthread_body + 140
第5帧：0x38ef7bce libsystem_pthread.dylib`_pthread_start + 102
线程＃7：tid = 0xcf5e0,0x38e7e838 libsystem_kernel.dylib kevent64 + 24, queue = 'com.apple.libdispatch-manager
frame #0: 0x38e7e838 libsystem_kernel.dylib kevent64 + 24
帧＃1：0x38dcd0d4 libdispatch.dylib _dispatch_mgr_invoke + 232
frame #2: 0x38dc7622 libdispatch.dylib _ dispatch_mgr_thread + 38
线程＃8：tid = 0xcf655,0x38e91c7c libsystem_kernel.dylib __workq_kernreturn + 8
frame #0: 0x38e91c7c libsystem_kernel.dylib __ workq_kernreturn + 8
帧＃1：0x38ef5e0a libsystem_pthread.dylib`_pthread_wqthread + 310
线程＃9：tid = 0xcf664,0x38e7ea84 libsystem_kernel.dylib mach_msg_trap + 20
frame #0: 0x38e7ea84 libsystem_kernel.dylib mach_msg_trap + 20
帧＃1：0x38e7e880 libsystem_kernel.dylib mach_msg + 40
frame #2: 0x2df353c2 AudioToolbox AURemoteIO :: IOThread :: Run（）+ 106
帧＃3：0x2df38600 AudioToolbox AURemoteIO::IOThread::Entry(void*) + 8
frame #4: 0x2de75772 AudioToolbox CAPThread :: Entry（CAPThread *）+ 210
第5帧：0x38ef7c5c libsystem_pthread.dylib _pthread_body + 140
frame #6: 0x38ef7bce libsystem_pthread.dylib _ pthread_start + 102
（LLDB）
答案 0 :(得分：-3)
最后我找到了解决方案。所有能够从互联网搜索获得的帖子都无法解决。有时，如果操作包含多线程的概念，则特殊操作类型将导致此问题，而不是由于包中的损坏或缺少纹理。我确实解决了它！