什么叫做 自建堆？怎么使用呢。

[ajp2002]

static HANDLE s_hHeap;
void* p =::HeapAlloc(s_hHeap, HEAP_ZERO_MEMORY, size);

s_hHeap是个什么样的概念

[chen18s]

堆栈和栈是相等的，堆是另外的
栈是程序启动时系统自动分配的固定内存块
而堆是临时分配的一块动态内存，比如new 和delete就在堆中完成
自建堆，就是自己建的堆咯！
呵呵

[ajp2002]

to : DentistryDoctor(牙科医生)
你并没回答我的问题啊，怎么使用这个句柄控制自建堆呢
to: shakaCY(天舞宝轮) ( )
你并没回答我的问题啊，怎么使用这个句柄控制自建堆呢

谢谢，再现等候答案

[门吹西风]

堆就是一块内存啊.

[snaill]

Memory allocated by HeapAlloc is not movable. The address returned by HeapAlloc is valid until the memory block is freed or reallocated; the memory block does not need to be locked. Because the system cannot compact a private heap, it can become fragmented.

Applications that allocate large amounts of memory in various allocation sizes can use the low-fragmentation heap to reduce heap fragmentation.

Serialization ensures mutual exclusion when two or more threads attempt to simultaneously allocate or free blocks from the same heap. There is a small performance cost to serialization, but it must be used whenever multiple threads allocate and free memory from the same heap. Setting the HEAP_NO_SERIALIZE value eliminates mutual exclusion on the heap. Without serialization, two or more threads that use the same heap handle might attempt to allocate or free memory simultaneously, likely causing corruption in the heap. The HEAP_NO_SERIALIZE value can, therefore, be safely used only in the following situations:



The process has only one thread.
The process has multiple threads, but only one thread calls the heap functions for a specific heap.
The process has multiple threads, and the application provides its own mechanism for mutual exclusion to a specific heap.

[shakaCY]

自己开辟的一块内存区域，并具有自己知道的句柄（如s_hHeap）对它进行控制！

[DentistryDoctor]

The HeapAlloc function allocates a block of memory from a heap. The allocated memory is not movable.
一般来说HeapAlloc是从进程的默认堆栈中分配内存的，GetProcessHeap可以得到此堆的句柄。
HeapCreate用于自己创建辅助堆栈。

[DentistryDoctor]

请阅读<Windows核心编程>CH-18