我面临着一个奇怪的问题，并且已经花了很多时间在这上面。
我的应用程序中发生崩溃，特别是在设备上的发布版本中。
崩溃日志为：
Incident Identifier: 1879D689-B225-4586-8E8E-D4D9DB392ABB
CrashReporter Key: c432ffa8a13433b330d0fc03863778260c00be45
Hardware Model: iPhone5,3
Process: CSR Proximity [5696]
Path: /var/mobile/Applications/4C6CDC7D-E594-4976-923B-0A62B68C0053/CSR Proximity.app/CSR Proximity
Identifier: com.csr.proximity.app.beacon
Version: 37_release (1.2.0_i)
Code Type: ARM (Native)
Parent Process: launchd [1]
Date/Time: 2015-01-09 19:46:08.903 +0530
OS Version: iOS 7.1.2 (11D257)
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGBUS)
Exception Subtype: EXC_ARM_DA_ALIGN at 0x03a3d4fe
Triggered by Thread: 13
Thread 0:
0 libsystem_kernel.dylib 0x3930ca50 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x3930c848 mach_msg + 36
2 CoreFoundation 0x2e59a5e4 __CFRunLoopServiceMachPort + 152
3 CoreFoundation 0x2e598d4a __CFRunLoopRun + 858
4 CoreFoundation 0x2e503724 CFRunLoopRunSpecific + 520
5 CoreFoundation 0x2e503506 CFRunLoopRunInMode + 102
6 GraphicsServices 0x334726ce GSEventRunModal + 134
7 UIKit 0x30e6486c UIApplicationMain + 1132
8 CSR Proximity 0x0000a042 main (main.m:17)
9 libdyld.dylib 0x39268ab4 start + 0
Thread 1:
0 libsystem_kernel.dylib 0x3930c804 kevent64 + 24
1 libdispatch.dylib 0x3925b050 _dispatch_mgr_invoke + 228
2 libdispatch.dylib 0x392552de _dispatch_mgr_thread + 34
Thread 2:
0 libsystem_kernel.dylib 0x3931fc70 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x39384c1e _pthread_wqthread + 306
2 libsystem_pthread.dylib 0x39384ad8 start_wqthread + 4
Thread 3:
0 libsystem_kernel.dylib 0x3931fc70 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x39384c1e _pthread_wqthread + 306
2 libsystem_pthread.dylib 0x39384ad8 start_wqthread + 4
Thread 4:
0 libsystem_kernel.dylib 0x3931fc70 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x39384c1e _pthread_wqthread + 306
2 libsystem_pthread.dylib 0x39384ad8 start_wqthread + 4
Thread 5:
0 libsystem_kernel.dylib 0x3931fc70 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x39384c1e _pthread_wqthread + 306
2 libsystem_pthread.dylib 0x39384ad8 start_wqthread + 4
Thread 6:
0 CoreData 0x2e359cc2 +[_PFRoutines newMutableSetFromCollection:byRemovingItems:] + 846
1 CoreData 0x2e3591a4 -[NSSQLCore recordToManyUpdatesForObject:withOperation:] + 1408
2 CoreData 0x2e3589f0 -[NSSQLCore recordUpdateForObject:] + 92
3 CoreData 0x2e357234 -[NSSQLCore recordChangesInContext:] + 576
4 CoreData 0x2e354640 -[NSSQLCore saveChanges:] + 704
5 CoreData 0x2e322c9a -[NSSQLCore executeRequest:withContext:error:] + 462
6 CoreData 0x2e322588 -[NSPersistentStoreCoordinator executeRequest:withContext:error:] + 2972
7 CoreData 0x2e343f44 -[NSManagedObjectContext save:] + 820
8 CSR Proximity 0x000a239e -[CPSController sendProximityUpdateNotification:] (CPSController.m:1542)
9 CSR Proximity 0x0009d988 -[CPSController placesWithCompletionBle::] (CPSController.m:1017)
10 CSR Proximity 0x0009ecd0 -[CPSController updateDataStoreProximitiesForBeacons::] (CPSController.m:1069)
11 CSR Proximity 0x0009f3ec -[CPSController handleCurrentBeacons:collectEntities:] (CPSController.m:1124)
12 CSR Proximity 0x0009f1e0 -[CPSController handleCurrentBeacons:deleted:] (CPSController.m:1104)
13 CSR Proximity 0x001349e4 -[BleThreadPayLoad process] (BleThreadPayLoad.m:996)
14 CSR Proximity 0x00133904 -[BleThreadPayLoad threadRunLoop] (BleThreadPayLoad.m:509)
15 CSR Proximity 0x001339aa -[BleThreadPayLoad main] (BleThreadPayLoad.m:531)
16 Foundation 0x2efb9a0a __NSThread__main__ + 1058
17 libsystem_pthread.dylib 0x39386956 _pthread_body + 138
18 libsystem_pthread.dylib 0x393868c6 _pthread_start + 98
19 libsystem_pthread.dylib 0x39384ae4 thread_start + 4
Thread 7 name: com.apple.NSURLConnectionLoader
Thread 7:
0 libsystem_kernel.dylib 0x3930ca50 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x3930c848 mach_msg + 36
2 CoreFoundation 0x2e59a5e4 __CFRunLoopServiceMachPort + 152
3 CoreFoundation 0x2e598d04 __CFRunLoopRun + 788
4 CoreFoundation 0x2e503724 CFRunLoopRunSpecific + 520
5 CoreFoundation 0x2e503506 CFRunLoopRunInMode + 102
6 Foundation 0x2ef4423c +[NSURLConnection(Loader) _resourceLoadLoop:] + 316
7 Foundation 0x2efb9a0a __NSThread__main__ + 1058
8 libsystem_pthread.dylib 0x39386956 _pthread_body + 138
9 libsystem_pthread.dylib 0x393868c6 _pthread_start + 98
10 libsystem_pthread.dylib 0x39384ae4 thread_start + 4
Thread 8:
0 libsystem_kernel.dylib 0x3930ca50 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x3930c848 mach_msg + 36
2 CoreFoundation 0x2e59a5e4 __CFRunLoopServiceMachPort + 152
3 CoreFoundation 0x2e598d04 __CFRunLoopRun + 788
4 CoreFoundation 0x2e503724 CFRunLoopRunSpecific + 520
5 CoreFoundation 0x2e503506 CFRunLoopRunInMode + 102
6 Foundation 0x2eef7492 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 250
7 CSR Proximity 0x000fa41a -[CPSAutoFetchController threadRunLoop:] (CPSAutoFetchController.m:333)
8 Foundation 0x2efb9a0a __NSThread__main__ + 1058
9 libsystem_pthread.dylib 0x39386956 _pthread_body + 138
10 libsystem_pthread.dylib 0x393868c6 _pthread_start + 98
11 libsystem_pthread.dylib 0x39384ae4 thread_start + 4
Thread 9:
0 libsystem_kernel.dylib 0x3931fc70 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x39384c1e _pthread_wqthread + 306
2 libsystem_pthread.dylib 0x39384ad8 start_wqthread + 4
Thread 10:
0 libsystem_kernel.dylib 0x3931fc70 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x39384c1e _pthread_wqthread + 306
2 libsystem_pthread.dylib 0x39384ad8 start_wqthread + 4
Thread 11 name: com.apple.CFSocket.private
Thread 11:
0 libsystem_kernel.dylib 0x3931f434 __select + 20
1 CoreFoundation 0x2e59e4de __CFSocketManager + 482
2 libsystem_pthread.dylib 0x39386956 _pthread_body + 138
3 libsystem_pthread.dylib 0x393868c6 _pthread_start + 98
4 libsystem_pthread.dylib 0x39384ae4 thread_start + 4
Thread 12:
0 libsystem_kernel.dylib 0x3931fc70 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x39384c1e _pthread_wqthread + 306
2 libsystem_pthread.dylib 0x39384ad8 start_wqthread + 4
Thread 13 Crashed:
0 CSR Proximity 0x0010fff4 checkSimpleEvent (lts_sdk_eval.c:560)
1 CSR Proximity 0x001108b8 checkEvent (lts_sdk_eval.c:964)
2 CSR Proximity 0x0011068c checkComplexEvent (lts_sdk_eval.c:1009)
3 CSR Proximity 0x001108a2 checkEvent (lts_sdk_eval.c:971)
4 CSR Proximity 0x00110962 Evaluate (lts_sdk_eval.c:1106)
5 CSR Proximity 0x0010f0a2 -[CPSEventManager evaluate:] (CPSEventManager.m:170)
6 CoreFoundation 0x2e5d3410 __invoking___ + 64
7 CoreFoundation 0x2e51d962 -[NSInvocation invoke] + 282
8 Foundation 0x2efa6d04 -[NSInvocationOperation main] + 108
9 Foundation 0x2ef04870 -[__NSOperationInternal _start:] + 768
10 Foundation 0x2efa8740 __NSOQSchedule_f + 56
11 libdispatch.dylib 0x39258cb8 _dispatch_queue_drain + 484
12 libdispatch.dylib 0x39255c6a _dispatch_queue_invoke + 38
13 libdispatch.dylib 0x392595ee _dispatch_root_queue_drain + 74
14 libdispatch.dylib 0x392598d8 _dispatch_worker_thread2 + 52
15 libsystem_pthread.dylib 0x39384c14 _pthread_wqthread + 296
16 libsystem_pthread.dylib 0x39384ad8 start_wqthread + 4
Thread 14:
0 libsystem_kernel.dylib 0x3931fc70 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x39384c1e _pthread_wqthread + 306
2 libsystem_pthread.dylib 0x39384ad8 start_wqthread + 4
Thread 13 crashed with ARM Thread State (32-bit):
r0: 0x03a3d4fe r1: 0x00000000 r2: 0x14f46000 r3: 0x00000002
r4: 0x00000007 r5: 0x14f27085 r6: 0x03a3d4ee r7: 0x03a3d6e0
r8: 0x03a3d675 r9: 0x00000fff r10: 0x14f27084 r11: 0x00000006
ip: 0x3b275118 sp: 0x03a3c464 lr: 0x0010ffdb pc: 0x0010fff4
cpsr: 0x00000030
我知道存在一些与字节对齐有关的问题。但是不知道我需要做什么。
崩溃位置代码段是对以下项的有效值函数调用：
static LtsEventStatus isBeaconInsideZoneAndDwellTime( const LtsBeaconProximityEvent* eventData,
const LtsBeaconProximity reportData, tSIRF_UINT8 isReverse, tSIRF_BOOL* found, tSIRF_UINT8 index)
任何帮助将不胜感激。
谢谢
添加更多详细信息 [调用方代码段]
LtsServerConfigureLocal *cfg = GetConfiguration();
LtsEventAttribute *attr;
LtsEventStatus flag = LTS_FALSE;
int beaconIndx = 0;
tSIRF_UINT8 reverse;
tSIRF_BOOL found;
LtsEventResults* eventsResult;
LtsProximalBeacons beacons = values->proximalBeacons;
CCSE_INFO("BeaconFence: Index : %d, values count: %dn", index, values->proximalBeacons.nValues);
CCSE_INFO("BeaconFence 1");
if( event->values.internal.value >= cfg->nAttributesCnt ) {
CCSE_ERROR("Invalid LtsProximalBeacons index %dn", event->values.internal.value );
return LTS_FALSE; // error
}
CCSE_INFO("BeaconFence 2: %d", event->values.internal.value);
attr = & cfg->attributes[ event->values.internal.value ];
found = FALSE;
reverse = 0x0F & ((event->values.internal.attributes & LTS_MASK_REVERSE)? 1: 0);
CCSE_INFO("BeaconFence 3");
//multiple beacons data
for( ; beaconIndx < beacons.nValues ; beaconIndx++)
{
CCSE_INFO("BeaconFence 41");
const LtsBeaconProximityEvent* eventData = NULL;
const LtsBeaconProximity *reportData = NULL;
eventData = &attr->attribute.beaconProximity;
CCSE_INFO("BeaconFence 411, eventData: %p, ", eventData );
CCSE_INFO("BeaconFence 412, reportData:%p, beaconIndx: %p ",&beacons.values[beaconIndx], &beaconIndx );
LtsBeaconProximity beacon = (eventData->proximalBeacon);
reportData = &beacons.values[beaconIndx];
// CCSE_INFO("eventData: nBeaconId: %d address of beaconid: %p, zone: %d, dwellTime: %f", beacon.beaconId, beacon.beaconId[5], beacon.zone, beacon.dwellTime);
CCSE_INFO("Beacon Fence 413");
CCSE_INFO("reportData: nBeaconId: %d beaconid: %s, dwellTime: %f, zone: %d, ", reportData->nBeaconId, reportData->beaconId, reportData->dwellTime, reportData->zone);
// flag = isBeaconInsideZoneAndDwellTime( & attr->attribute.beaconProximity, beacons.values[beaconIndx], reverse, &found, index);
flag = isBeaconInsideZoneAndDwellTime( eventData, beacons.values[beaconIndx], reverse, &found, index);
CCSE_INFO("BeaconFence 42");
if(found)
break;
}
问题是日志"信标围栏 42"根本没有打印。代码在调用isBeaconInsideZoneAndDwellTime时崩溃。在控制台日志中，我们得到 sigbus 10
EXC_ARM_DA_ALIGN表示您的代码正在尝试使用在isBeaconInsideZoneAndDwellTime中未正确对齐的变量。
从你关于按值而不是地址传递的评论来看，这意味着 isBeaconInsideZoneAndDwellTime 中的代码对 LtsBeaconProximity 结构的布局与调用它的代码有不同的看法。当通过值传递时，字节被复制，因此内部的代码是BeaconInsideZoneAndDwellTime正在处理其版本的LtsBeaconProximity 结构布局。假设存在对齐问题，在这种情况下，您会在结构而不是 SIGBUS 中看到错误的值。但是，如果错误值为 0 或在未使用的区域中，您可能会侥幸逃脱。当通过地址传递时，isBeaconInsideZoneAndDwellTime中的代码基于其对LtsbeaconProximity 结构布局的理解使用偏移量和类型，但使用该偏移量到对该结构的调用代码的理解上。在这里，使用变量会触发对齐问题，因为两者必须不匹配。
我会在调用代码中添加一些调试，以打印出结构内容相对于开始地址和大小的偏移量。然后将相同的代码粘贴到 isBeaconInsideZoneAndDwellTime 中。如果代码未对齐，您将看到不同的偏移量。
一个简单的起点是在函数内部和外部打印出sizeof（LtsbeaconProximity）。如果不同，那么您就知道这是一个问题。
如果您能向我们展示 LtsbeaconProximity 的结构，我认为这将有助于我们。
好吧，我不知道为什么它被修复了。但是我已经在相当多的ARM架构和iOS设备上尝试过，在我通过引用传递第二个参数后，崩溃似乎已经消失了。