c++ static allocator

static allocator

定义一个allocator来管理内存分配

class allocator

{

     public:

                 void* allocate(size_t);

                 void deallocate(void*, size_t);

   private:

           const int CHUNK=5;

           struct obj{

                  struct obj* next;

            }

}

void *allocator::allocate(size_t size){

 obj* p;

if(!freestore){

  freepstore=  p=         malloc

}

可以定义为宏：

#define DECLARE_POOL_ALLOC()\

public:\

  void* operator new(size_t size){}\

void operator delete(){}\

protected:\

static allocator myAlloc;