堆管理(heap management)

 我知道有一个元数据存储辅助信息，当我们只提供指针时，在free() ， realloc()期间使用这些辅助信息。 
 
 我对堆很少有疑问。 
 
 
 
 堆栈按进程分配。 毫无疑问，但不确定堆。 无论堆信息是否全局维护，否则每个进程都会有一些机制来保存有关该特定进程的已分配内存的信息。 

 
 
 堆信息将如何维护？ 我猜哈希机制。 我用Google搜索并尝试了SO。 他们中的大多数人都将其解释为具体实施......就像那样。 
 

I know there is a meta-data which stores auxiliary information which is used during free(), realloc() when we supply only the pointer.
 
I have few doubts about heap.
 
 
 
Stack is allocated per-process. There is no doubt in that, but not sure about heap. Whether a heap information is globally maintained else per-process there will be some mechanism which holds info about allocated memory for that particular process. 

 
 
How heap information will be maintained? I guess hashing mechanism. I googled and tried SO also. most of them explained it as implementation specific.. like that.
 

原文：https://stackoverflow.com/questions/11501189