OSMemCreate()中创建链表的疑问
请教下面标红的代码都是局部变量操作的，最后也没有返回。这样操作怎么会建立了一个链表呢？
OS_MEM*OSMemCreate (void *addr, INT32U nblks, INT32U blksize, INT8U *err)
{
#if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
OS_CPU_SRcpu_sr;
#endif
OS_MEM *pmem;
INT8U *pblk;
void **plink;
INT32U i;
......
plink = (void **)addr; /* Create linked list of free memory blocks */
pblk= (INT8U *)addr + blksize;
for (i = 0; i < (nblks - 1); i++) {
*plink = (void *)pblk;
plink= (void **)pblk;
pblk = pblk + blksize;
}
*plink = (void *)0; /* Last memory block points to NULL */
pmem->OSMemAddr = addr; /* Store start address of memory partition */
pmem->OSMemFreeList = addr; /* Initialize pointer to pool of free blocks */
pmem->OSMemNFree = nblks; /* Store number of free blocks in MCB */
pmem->OSMemNBlks = nblks;
pmem->OSMemBlkSize= blksize; /* Store block size of each memory blocks */
*err = OS_NO_ERR;
return (pmem);
}
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