救命啊！在线等！！

[GGPPRRSS88223311]

1. list as many as possible the thread and process synchronization primitives you know of on UNIX and Windows. Briefly explain what they are and what situations they are most suited for？？
2. how do you use object reference count to manage object’s lifetime in a multi-thread application？？
3. what's the difference between passing parameters by value and passing parameters by reference? write a function that allocates a new chunk of memory and returns the allocated memory to the caller VIA A PARAMETER？？
4 4. assume x is an STL iterator. Explain why generally postfix form of increment operation on x, ie., x++, is less efficient than the prefix form of the operation, i.e., ++x？？

[山的那边还是山~]

感觉题目很不错！不过，我不会答！

[帅得不敢出门]

救命啊 怎么都是E文

[feng4206yu]

翻译如下：
1.尽可能多的列举你知道的在Unix和Windows上的线程和队列中的同步基元，并简略的解释他们是什么以及适用于什么情形？
2.在一个多线程应用程序中你如何通过对象引用的使用来控制对象的生命期
3.传值调用参数和和引用参数的区别是什么？写一个要求一个参数的函数，返回内存分配的地址指针..
4.假设X是一个STL指针，请解释一下为什么自增后缀的操作X++的效率要比自增前缀的操作++X低
应该没有错吧，搬个凳子坐着看....

[e_sharp]

4. postfix比prefix多使用了一个临时对象

iterator& operator++() { //prefix
...//++
return *this;
}

iterator operator++(int) { //postfix
iterator tmp = *this;
...//++
return tmp;
}

[ViCross]

LZ 好像都没讲清楚想干什么.
要翻译呢还是解释