los_lms.h 文件参考

浏览源代码.

函数
UINT32	LOS_LmsCheckPoolAdd (const VOID *pool, UINT32 size)
VOID	LOS_LmsCheckPoolDel (const VOID *pool)
VOID	LOS_LmsAddrProtect (UINTPTR addrStart, UINTPTR addrEnd)
VOID	LOS_LmsAddrDisableProtect (UINTPTR addrStart, UINTPTR addrEnd)

函数说明

LOS_LmsAddrDisableProtect()

VOID LOS_LmsAddrDisableProtect	(	UINTPTR	addrStart,
		UINTPTR	addrEnd
	)

在文件 los_lms.c 第 430 行定义.

{
    UINT32 intSave;
    if (addrEnd <= addrStart) {
        return;
    }
    LMS_LOCK(intSave);
    LmsMemListNode *node = OsLmsGetPoolNodeFromAddr(addrStart);
    if (node != NULL) {
        OsLmsSetShadowValue(node, addrStart, addrEnd, LMS_SHADOW_ACCESSABLE_U8);
    }
    LMS_UNLOCK(intSave);
}

函数调用图:

LOS_LmsAddrProtect()

VOID LOS_LmsAddrProtect	(	UINTPTR	addrStart,
		UINTPTR	addrEnd
	)

在文件 los_lms.c 第 416 行定义.

{
    UINT32 intSave;
    if (addrEnd <= addrStart) {
        return;
    }
    LMS_LOCK(intSave);
    LmsMemListNode *node = OsLmsGetPoolNodeFromAddr(addrStart);
    if (node != NULL) {
        OsLmsSetShadowValue(node, addrStart, addrEnd, LMS_SHADOW_REDZONE_U8);
    }
    LMS_UNLOCK(intSave);
}

函数调用图:

LOS_LmsCheckPoolAdd()

UINT32 LOS_LmsCheckPoolAdd	(	const VOID *	pool,
		UINT32	size
	)

添加指定内存池被检测 将指定内存池的地址范围添加到LMS的内存检测链表上，当访问的地址在链表范围内时，LMS才进行合法性校验； 且LOS_MemInit接口会调用该接口，默认将初始化的内存池挂入到检测链表中。

在文件 los_lms.c 第 141 行定义.

{
    UINT32 intSave;
    UINTPTR poolAddr = (UINTPTR)pool;
    UINT32 realSize;
    LmsMemListNode *lmsPoolNode = NULL;
 
    if (pool == NULL) {
        return 0;
    }
 
    LMS_LOCK(intSave);
 
    lmsPoolNode = OsLmsGetPoolNodeFromAddr((UINTPTR)pool);
    if (lmsPoolNode != NULL) { /* if pool range already on checklist */
        if (lmsPoolNode->poolAddr != (UINTPTR)pool) { /* pool is a subset of lmsPoolNode->poolAddr */
            /* do not add it again, just return */
            PRINT_DEBUG("[LMS]pool %p already on lms checklist !\n", pool);
            LMS_UNLOCK(intSave);
            return size; /* return size indicate the shadow memory init successful */
        } else { /* Re-initialize the same pool, maybe with different size */
            /* delete the old node, then add a new one */
            lmsPoolNode->used = LMS_POOL_UNUSED;
            LOS_ListDelete(&(lmsPoolNode->node));
        }
    }
 
    lmsPoolNode = OsLmsCheckPoolCreate();
    if (lmsPoolNode == NULL) {
        PRINT_DEBUG("[LMS]the num of lms check pool is max already !\n");
        LMS_UNLOCK(intSave);
        return 0;
    }
    realSize = OsLmsPoolResize(size);
 
    lmsPoolNode->poolAddr = poolAddr;
    lmsPoolNode->poolSize = realSize;
    lmsPoolNode->shadowStart = (UINTPTR)poolAddr + realSize;
    lmsPoolNode->shadowSize = poolAddr + size - lmsPoolNode->shadowStart;
    /* init shadow value */
    (VOID)memset((VOID *)lmsPoolNode->shadowStart, LMS_SHADOW_AFTERFREE_U8, lmsPoolNode->shadowSize);
 
    LOS_ListAdd(&g_lmsCheckPoolList, &(lmsPoolNode->node));
 
    LMS_UNLOCK(intSave);
    return realSize;
}

函数调用图:

这是这个函数的调用关系图:

LOS_LmsCheckPoolDel()

VOID LOS_LmsCheckPoolDel

(

const VOID *

pool

)

在文件 los_lms.c 第 189 行定义.

{
    UINT32 intSave;
    if (pool == NULL) {
        return;
    }
 
    LMS_LOCK(intSave);
    LmsMemListNode *delNode = OsLmsGetPoolNode(pool);
    if (delNode == NULL) {
        PRINT_ERR("[LMS]pool %p is not on lms checklist !\n", pool);
        goto Release;
    }
    delNode->used = LMS_POOL_UNUSED;
    LOS_ListDelete(&(delNode->node));
Release:
    LMS_UNLOCK(intSave);
}

函数调用图:

这是这个函数的调用关系图: