我有一个iPhone应用程序在保存CoreData时有时会冻结,然后不会重新启动。我确实有第二个线程使用数据库,但我认为我已经按照该模式为该线程创建了单独的上下文。这是重新启动的崩溃报告。有任何想法吗?在CoreData上冻结应用程序保存
我试过改变它只能运行一个线程,这里是进入背景后的最新冰点。
#0 0x30851b98 in fsync
#1 0x3094e694 in _sqlite3_purgeEligiblePagerCacheMemory
#2 0x3094e6b8 in _sqlite3_purgeEligiblePagerCacheMemory
#3 0x30945372 in sqlite3_compileoption_get
#4 0x30957f06 in sqlite3_extended_errcode
#5 0x3095dc20 in sqlite3_extended_errcode
#6 0x3095dd8e in sqlite3_extended_errcode
#7 0x309646f8 in sqlite3_clear_bindings
#8 0x3098845a in sqlite3_open16
#9 0x3094495a in sqlite3_step
#10 0x31a1dc20 in _execute
#11 0x31acc6e8 in -[NSSQLiteConnection commitTransaction]
#12 0x31aca646 in -[NSSQLiteConnection endPrimaryKeyGeneration]
#13 0x31abeab4 in -[NSSQLCore prepareForSave:]
#14 0x31a4acd0 in -[NSSQLCore saveChanges:]
#15 0x31a1591e in -[NSSQLCore executeRequest:withContext:error:]
#16 0x31a1538a in -[NSPersistentStoreCoordinator executeRequest:withContext:error:]
#17 0x31a48544 in -[NSManagedObjectContext save:]
#18 0x000080aa in -[KPersistence saveManagedObjects:] at KPersistence.m:242
#19 0x00004320 in -[KinKastAppDelegate applicationDidEnterBackground:] at KinKastAppDelegate.m:126
这是我实现saveManagedObjects的
-(BOOL)saveManagedObjects:(NSError **)error
{
[persistentStoreCoordinator lock];
BOOL success = YES;
if (managedObjectContext != nil) {
if ([managedObjectContext hasChanges] && ![managedObjectContext save:error]) {
VLog(@"Unresolved error %@, %@", *error, [*error userInfo]);
success = NO;
}
}
[persistentStoreCoordinator unlock];
return success;
}
+1同样的问题,没有解决方案。 – 2012-02-01 18:24:39
我已经为我解决了它。问题是将浮点数或双精度值保存到整数字段。这导致了内存中的浮点nsnumber和始终从磁盘上的db读取的整数nsnumber之间的无限合并循环。 – 2012-02-01 19:41:17
嗯..感谢提示。我将不得不再次检查我的代码,看起来需要一段时间:S – 2012-02-01 20:18:53