// 类的定义
class test_mm
{
public:
test_mm();
~test_mm();
void *operator new(size_t size);
void operator delete(void *p);
};
// 类的实现如下：
test_mm::test_mm(){
printf("test_mm\n");
}
test_mm::~test_mm(){
printf("~test_mm\n");
}
void *test_mm::operator new(size_t size){
printf("test_mm new\n");
void * p = mm_malloc(size);
return p;
}
void test_mm::operator delete(void *p){
printf("test_mm delete\n");
mm_free(p);
}// 执行new和delete之后
test_mm * t1 = new test_mm();
test_mm * t2 = new test_mm();
delete t1;
delete t2;
打印为：
test_mm new
test_mm new
未调用构造函数；
也未调用析构函数和delete
