C++ (Cpp) vm_object_pip_wait示例

示例#1

文件： vnode_pager.c 项目： kwitaszczyk/freebsd

/*
 *	The object must be locked.
 */
static void
vnode_pager_dealloc(vm_object_t object)
{
	struct vnode *vp;
	int refs;

	vp = object->handle;
	if (vp == NULL)
		panic("vnode_pager_dealloc: pager already dealloced");

	VM_OBJECT_ASSERT_WLOCKED(object);
	vm_object_pip_wait(object, "vnpdea");
	refs = object->ref_count;

	object->handle = NULL;
	object->type = OBJT_DEAD;
	if (object->flags & OBJ_DISCONNECTWNT) {
		vm_object_clear_flag(object, OBJ_DISCONNECTWNT);
		wakeup(object);
	}
	ASSERT_VOP_ELOCKED(vp, "vnode_pager_dealloc");
	if (object->un_pager.vnp.writemappings > 0) {
		object->un_pager.vnp.writemappings = 0;
		VOP_ADD_WRITECOUNT(vp, -1);
		CTR3(KTR_VFS, "%s: vp %p v_writecount decreased to %d",
		    __func__, vp, vp->v_writecount);
	}
	vp->v_object = NULL;
	VOP_UNSET_TEXT(vp);
	VM_OBJECT_WUNLOCK(object);
	while (refs-- > 0)
		vunref(vp);
	VM_OBJECT_WLOCK(object);
}

示例#2

文件： vnode_pager.c 项目： victoredwardocallaghan/DragonFlyBSD

static void
vnode_pager_dealloc(vm_object_t object)
{
	struct vnode *vp = object->handle;

	if (vp == NULL)
		panic("vnode_pager_dealloc: pager already dealloced");

	vm_object_pip_wait(object, "vnpdea");

	object->handle = NULL;
	object->type = OBJT_DEAD;
	vp->v_object = NULL;
	vp->v_filesize = NOOFFSET;
	vclrflags(vp, VTEXT | VOBJBUF);
	swap_pager_freespace_all(object);
}