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序号：45591 发表者：_DAWN_ 发表日期：2003-07-01 22:34:07
<br>主题：堆
<br>内容：堆到底是什么东西。堆是不是只属于程序的。象malloc等函数在堆中分配数据。当整个程序运行结束后，该程序的堆就还给操作系统。上面的理解不知道对不对。
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<font color=red>答案被接受</font><br>回复者：michael 回复日期：2003-07-01 22:42:54
<br>内容：堆是操作系统管理的公共空间。
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回复者：_DAWN_ 回复日期：2003-07-01 23:05:36
<br>内容：从下面的解释来理解的话，好象在说，堆是属于程序的。<BR><BR>The free function deallocates a memory block (memblock) that was previously allocated by a call to calloc, malloc, or realloc. The number of freed bytes is equivalent to the number of bytes requested when the block was allocated (or reallocated, in the case of realloc). If memblock is NULL, the pointer is ignored and free immediately returns. Attempting to free an invalid pointer (a pointer to a memory block that was not allocated by calloc, malloc, or realloc) may affect subsequent allocation requests and cause errors.<BR><BR>After a memory block has been freed, _heapmin minimizes the amount of free memory on the heap by coalescing the unused regions and releasing them back to the operating system. Freed memory that is not released to the operating system is restored to the free pool and is available for allocation again.<BR>
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