동시 nsoperation을 구현했으며 ARC를 활성화했습니다. 이제 고객이 재현 할 수없는 충돌이 발생했습니다.NSOperation 충돌 on isCancelled
Date/Time: 2013-04-24 12:23:34.925 -0400
OS Version: Mac OS X 10.8.3 (12D78)
Report Version: 10
Interval Since Last Report: 30946 sec
Crashes Since Last Report: 1
Per-App Interval Since Last Report: 33196 sec
Per-App Crashes Since Last Report: 1
Anonymous UUID: FB8460EE-5199-C6FB-55DC-F927D7F81A80
Crashed Thread: 15 Dispatch queue: com.apple.root.default-priority
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: EXC_I386_GPFLT
Application Specific Information:
objc_msgSend() selector name: isCancelled
Thread 15 Crashed:: Dispatch queue: com.apple.root.default-priority
0 libobjc.A.dylib 0x00007fff877f1250 objc_msgSend + 16
1 Myapp 0x000000010a608807 0x10a601000 + 30727
2 Myapp 0x000000010a650575 0x10a601000 + 324981
3 com.apple.Foundation 0x00007fff8b66212f -[NSBlockOperation main] + 124
4 com.apple.Foundation 0x00007fff8b638036 -[__NSOperationInternal start] + 684
5 com.apple.Foundation 0x00007fff8b63f861 __block_global_6 + 129
6 libdispatch.dylib 0x00007fff832d0f01 _dispatch_call_block_and_release + 15
7 libdispatch.dylib 0x00007fff832cd0b6 _dispatch_client_callout + 8
8 libdispatch.dylib 0x00007fff832ce1fa _dispatch_worker_thread2 + 304
9 libsystem_c.dylib 0x00007fff87d19d0b _pthread_wqthread + 404
10 libsystem_c.dylib 0x00007fff87d041d1 start_wqthread + 13
내 코드는 다음과 같습니다 :
-(void)start
{
// Always check for cancellation before launching the task.
if ([self isCancelled])
{
// Must move the operation to the finished state if it is canceled.
[self onCancelSyncOperation];
return;
}
// If the operation is not canceled, begin executing the task.
[self willChangeValueForKey:@"isExecuting"];
[NSThread detachNewThreadSelector:@selector(main) toTarget:self withObject:nil];
executing = YES;
[self didChangeValueForKey:@"isExecuting"];
}
- (void)onCancelSyncOperation
{
[self willChangeValueForKey:@"isFinished"];
[self willChangeValueForKey:@"isExecuting"];
executing = NO;
finished = YES;
[self didChangeValueForKey:@"isExecuting"];
[self didChangeValueForKey:@"isFinished"];
}
그것은 nsoperation 것 같아이 이미 출시 그는 나에게 다음과 충돌 로그를 보내? 그걸 확인하려고 할 때 무죄인가?
이것이 가능합니까?
'self'는'NSOperation'의 하위 클래스입니다. – elslooo
이 클래스는 NSOperation의 서브 클래스입니다 – pdiddy
'1 Myapp 0x000000010a608807 0x10a601000 + 30727 2 Myapp 0x000000010a650575 0x10a601000 + 324981'을 (를) 기호화 할 수 있었습니까? 이것은 좋은 통찰력을 제공 할 수 있습니다. –