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change libspl list member names to match kernel

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This aids in debugging, so that we can use the same infrastructure to
walk zfs's list_t in the kernel module and in the userland libraries
(e.g. when debugging ztest).

Reviewed-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes #10236
This commit is contained in:
Matthew Ahrens 2020-04-23 15:53:14 -07:00 committed by GitHub
parent 196bee4cfd
commit 5d4ed9614f
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 40 additions and 41 deletions
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4
lib/libspl/include/sys/list_impl.h
View File

@ -34,8 +34,8 @@ extern "C" {
#endif #endif
struct list_node { struct list_node {
struct list_node *list_next; struct list_node *next;
struct list_node *list_prev; struct list_node *prev;
}; };
struct list { struct list {

77
lib/libspl/list.c
View File

@ -35,28 +35,28 @@
#define list_d2l(a, obj) ((list_node_t *)(((char *)obj) + (a)->list_offset)) #define list_d2l(a, obj) ((list_node_t *)(((char *)obj) + (a)->list_offset))
#define list_object(a, node) ((void *)(((char *)node) - (a)->list_offset)) #define list_object(a, node) ((void *)(((char *)node) - (a)->list_offset))
#define list_empty(a) ((a)->list_head.list_next == &(a)->list_head) #define list_empty(a) ((a)->list_head.next == &(a)->list_head)
#define list_insert_after_node(list, node, object) { \ #define list_insert_after_node(list, node, object) { \
list_node_t *lnew = list_d2l(list, object); \ list_node_t *lnew = list_d2l(list, object); \
lnew->list_prev = (node); \ lnew->prev = (node); \
lnew->list_next = (node)->list_next; \ lnew->next = (node)->next; \
(node)->list_next->list_prev = lnew; \ (node)->next->prev = lnew; \
(node)->list_next = lnew; \ (node)->next = lnew; \
} }
#define list_insert_before_node(list, node, object) { \ #define list_insert_before_node(list, node, object) { \
list_node_t *lnew = list_d2l(list, object); \ list_node_t *lnew = list_d2l(list, object); \
lnew->list_next = (node); \ lnew->next = (node); \
lnew->list_prev = (node)->list_prev; \ lnew->prev = (node)->prev; \
(node)->list_prev->list_next = lnew; \ (node)->prev->next = lnew; \
(node)->list_prev = lnew; \ (node)->prev = lnew; \
} }
#define list_remove_node(node) \ #define list_remove_node(node) \
(node)->list_prev->list_next = (node)->list_next; \ (node)->prev->next = (node)->next; \
(node)->list_next->list_prev = (node)->list_prev; \ (node)->next->prev = (node)->prev; \
(node)->list_next = (node)->list_prev = NULL (node)->next = (node)->prev = NULL
void void
list_create(list_t *list, size_t size, size_t offset) list_create(list_t *list, size_t size, size_t offset)
@ -67,8 +67,7 @@ list_create(list_t *list, size_t size, size_t offset)
list->list_size = size; list->list_size = size;
list->list_offset = offset; list->list_offset = offset;
list->list_head.list_next = list->list_head.list_prev = list->list_head.next = list->list_head.prev = &list->list_head;
&list->list_head;
} }
void void
@ -77,10 +76,10 @@ list_destroy(list_t *list)
list_node_t *node = &list->list_head; list_node_t *node = &list->list_head;
ASSERT(list); ASSERT(list);
ASSERT(list->list_head.list_next == node); ASSERT(list->list_head.next == node);
ASSERT(list->list_head.list_prev == node); ASSERT(list->list_head.prev == node);
node->list_next = node->list_prev = NULL; node->next = node->prev = NULL;
} }
void void
@ -124,14 +123,14 @@ list_remove(list_t *list, void *object)
{ {
list_node_t *lold = list_d2l(list, object); list_node_t *lold = list_d2l(list, object);
ASSERT(!list_empty(list)); ASSERT(!list_empty(list));
ASSERT(lold->list_next != NULL); ASSERT(lold->next != NULL);
list_remove_node(lold); list_remove_node(lold);
} }
void * void *
list_remove_head(list_t *list) list_remove_head(list_t *list)
{ {
list_node_t *head = list->list_head.list_next; list_node_t *head = list->list_head.next;
if (head == &list->list_head) if (head == &list->list_head)
return (NULL); return (NULL);
list_remove_node(head); list_remove_node(head);
@ -141,7 +140,7 @@ list_remove_head(list_t *list)
void * void *
list_remove_tail(list_t *list) list_remove_tail(list_t *list)
{ {
list_node_t *tail = list->list_head.list_prev; list_node_t *tail = list->list_head.prev;
if (tail == &list->list_head) if (tail == &list->list_head)
return (NULL); return (NULL);
list_remove_node(tail); list_remove_node(tail);
@ -153,7 +152,7 @@ list_head(list_t *list)
{ {
if (list_empty(list)) if (list_empty(list))
return (NULL); return (NULL);
return (list_object(list, list->list_head.list_next)); return (list_object(list, list->list_head.next));
} }
void * void *
@ -161,7 +160,7 @@ list_tail(list_t *list)
{ {
if (list_empty(list)) if (list_empty(list))
return (NULL); return (NULL);
return (list_object(list, list->list_head.list_prev)); return (list_object(list, list->list_head.prev));
} }
void * void *
@ -169,8 +168,8 @@ list_next(list_t *list, void *object)
{ {
list_node_t *node = list_d2l(list, object); list_node_t *node = list_d2l(list, object);
if (node->list_next != &list->list_head) if (node->next != &list->list_head)
return (list_object(list, node->list_next)); return (list_object(list, node->next));
return (NULL); return (NULL);
} }
@ -180,8 +179,8 @@ list_prev(list_t *list, void *object)
{ {
list_node_t *node = list_d2l(list, object); list_node_t *node = list_d2l(list, object);
if (node->list_prev != &list->list_head) if (node->prev != &list->list_head)
return (list_object(list, node->list_prev)); return (list_object(list, node->prev));
return (NULL); return (NULL);
} }
@ -201,13 +200,13 @@ list_move_tail(list_t *dst, list_t *src)
if (list_empty(src)) if (list_empty(src))
return; return;
dstnode->list_prev->list_next = srcnode->list_next; dstnode->prev->next = srcnode->next;
srcnode->list_next->list_prev = dstnode->list_prev; srcnode->next->prev = dstnode->prev;
dstnode->list_prev = srcnode->list_prev; dstnode->prev = srcnode->prev;
srcnode->list_prev->list_next = dstnode; srcnode->prev->next = dstnode;
/* empty src list */ /* empty src list */
srcnode->list_next = srcnode->list_prev = srcnode; srcnode->next = srcnode->prev = srcnode;
} }
void void
@ -216,24 +215,24 @@ list_link_replace(list_node_t *lold, list_node_t *lnew)
ASSERT(list_link_active(lold)); ASSERT(list_link_active(lold));
ASSERT(!list_link_active(lnew)); ASSERT(!list_link_active(lnew));
lnew->list_next = lold->list_next; lnew->next = lold->next;
lnew->list_prev = lold->list_prev; lnew->prev = lold->prev;
lold->list_prev->list_next = lnew; lold->prev->next = lnew;
lold->list_next->list_prev = lnew; lold->next->prev = lnew;
lold->list_next = lold->list_prev = NULL; lold->next = lold->prev = NULL;
} }
void void
list_link_init(list_node_t *ln) list_link_init(list_node_t *ln)
{ {
ln->list_next = NULL; ln->next = NULL;
ln->list_prev = NULL; ln->prev = NULL;
} }
int int
list_link_active(list_node_t *ln) list_link_active(list_node_t *ln)
{ {
return (ln->list_next != NULL); return (ln->next != NULL);
} }
int int