jiangzhoubai
- 浏览: 58762 次
- 性别:
- 来自: 太原
-
最新评论
-
gamehiboy：
求Service类的代码，
多线程和同步队列 -
jiangzhoubai：
gamehiboy 写道Service类是啥， 插入数据的se ...
多线程和同步队列 -
gamehiboy：
Service类是啥，
多线程和同步队列 -
jiangzhoubai：
netkiller.github.com 写道:-) 我也刚刚 ...
多线程和同步队列 -
netkiller.github.com：
:-) 我也刚刚做过类似的东西，我是造数据，python 实现 ...
多线程和同步队列
相关推荐
例如，在上面的代码中，崩溃的原因是`message sent to deallocated instance 0x7179910`。 三、使用MallocStackLoggingNoCompact标记位追踪崩溃原因 如果崩溃不在当前调用栈中，我们可以使用...
11-28 13:22:08.911 PropMemFun [2132:11303] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[CFString respondsToSelector:]: message sent to deallocated instance 0x...
Unnamed[3646:a0f] ***-[CFString release]: message sent to deallocated instance 0x10010d340 ``` 2. **使用 MallocStackLogging**：除了 NSZombieEnabled，还可以通过开启 `MallocStackLogging` 来获取更多...
例如，错误信息可能是“2013-06-23 00:45:20.479 *** -[__NSArrayM addObject:]: message sent to deallocated instance 0x7179910”。这表明问题出在尝试向一个已释放的NSArray实例发送`addObject:`消息。 如果...
3. 在消息转发过程中，系统能够获取到原始类名和尝试调用的方法，然后在控制台输出错误信息，例如：`-[原类名 selector]: message sent to deallocated instance 0x地址`。 为了自己实现这个功能，我们需要进行以下...
5.5.7 Determine how Memory is Deallocated on Your Machine . 51 5.5.8 Use a Memory Profiler . . . . . . . . . 53 5.6 Step 4: Identifying Greedy Data Structures . . . . . . 54 5.6.1 Instrumenting Data ...
- **Dangling Pointers**: Pointers that point to memory that has been deallocated. - **Null Pointers**: Pointers that have not been initialized or have been set to `NULL`. - **Accessing Out-of-Bounds ...
From there, you’ll create a custom LLDB command which gives you the stack trace of when an object was allocated or deallocated in memory — even after the stack trace is long gone from the debugger....
will cause the payload pointed to by ptr to be deallocated and become available for later use. The macros are defined as follows: #define MALLOC(s) MyMalloc(s, __FILE__, __LINE__) #define FREE(p) My...
SP-6937 : Parentheses style settings no longer apply to table hints, so they always remain on the same line as the preceding WITH. SP-6958 : Preserve whitespace between alias and table name in ...
Stepping to the next line in the source program . . . . . . . . . . . . Stepping into a subroutine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Examining the Stack . . . . . . . . . ....
// retain count = 0, object will be deallocated ``` 在这个例子中，`obj2`成为一个无效指针。为了避免这种情况，可以手动调用`retain`来增加引用计数： ```objc ClassA *obj1 = [[ClassA alloc] init]; // ...
NSLog(@"Target has been deallocated, cannot forward message."); return; } [anInvocation invokeWithTarget:self.target]; } @end // 使用示例 WeakTargetProxy *proxy = [[WeakTargetProxy alloc] ...
7. Deallocated（释放）：内存被回收或再分配。 二、优化内存的意义 内存优化可以避免内存泄漏、内存抖动等问题，提高应用的运行效率，减少电池消耗，提升用户体验。 三、避免内存泄漏 1. 内存泄漏定义：对象...
NSLog(@"%@ is being deallocated", self); } ``` ## 5. 继承与多态 Object-C支持单继承，即一个类只能有一个父类。通过继承，子类可以复用父类的属性和方法，也可以添加新的功能。多态是指不同对象对同一消息...