diff options
Diffstat (limited to 'lib/ccan/list')
| -rw-r--r-- | lib/ccan/list/LICENSE | 508 | ||||
| -rw-r--r-- | lib/ccan/list/_info | 70 | ||||
| -rw-r--r-- | lib/ccan/list/list.c | 43 | ||||
| -rw-r--r-- | lib/ccan/list/list.d | 27 | ||||
| -rw-r--r-- | lib/ccan/list/list.h | 469 | ||||
| -rw-r--r-- | lib/ccan/list/test/compile_ok-constant.c | 49 | ||||
| -rw-r--r-- | lib/ccan/list/test/helper.c | 54 | ||||
| -rw-r--r-- | lib/ccan/list/test/helper.h | 7 | ||||
| -rw-r--r-- | lib/ccan/list/test/run-check-corrupt.c | 89 | ||||
| -rw-r--r-- | lib/ccan/list/test/run-list_del_from-assert.c | 36 | ||||
| -rw-r--r-- | lib/ccan/list/test/run-single-eval.c | 168 | ||||
| -rw-r--r-- | lib/ccan/list/test/run-with-debug.c | 3 | ||||
| -rw-r--r-- | lib/ccan/list/test/run.c | 200 |
13 files changed, 1723 insertions, 0 deletions
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Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James + Random Hacker. + + <signature of Ty Coon>, 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! diff --git a/lib/ccan/list/_info b/lib/ccan/list/_info new file mode 100644 index 0000000000..a30659c1cf --- /dev/null +++ b/lib/ccan/list/_info @@ -0,0 +1,70 @@ +#include <stdio.h> +#include <string.h> +#include "config.h" + +/** + * list - double linked list routines + * + * The list header contains routines for manipulating double linked lists. + * It defines two types: struct list_head used for anchoring lists, and + * struct list_node which is usually embedded in the structure which is placed + * in the list. + * + * Example: + * #include <err.h> + * #include <stdio.h> + * #include <stdlib.h> + * #include <ccan/list/list.h> + * + * struct parent { + * const char *name; + * struct list_head children; + * unsigned int num_children; + * }; + * + * struct child { + * const char *name; + * struct list_node list; + * }; + * + * int main(int argc, char *argv[]) + * { + * struct parent p; + * struct child *c; + * unsigned int i; + * + * if (argc < 2) + * errx(1, "Usage: %s parent children...", argv[0]); + * + * p.name = argv[1]; + * list_head_init(&p.children); + * p.num_children = 0; + * for (i = 2; i < argc; i++) { + * c = malloc(sizeof(*c)); + * c->name = argv[i]; + * list_add(&p.children, &c->list); + * p.num_children++; + * } + * + * printf("%s has %u children:", p.name, p.num_children); + * list_for_each(&p.children, c, list) + * printf("%s ", c->name); + * printf("\n"); + * return 0; + * } + * + * License: LGPL (v2.1 or any later version) + * Author: Rusty Russell <rusty@rustcorp.com.au> + */ +int main(int argc, char *argv[]) +{ + if (argc != 2) + return 1; + + if (strcmp(argv[1], "depends") == 0) { + printf("ccan/container_of\n"); + return 0; + } + + return 1; +} diff --git a/lib/ccan/list/list.c b/lib/ccan/list/list.c new file mode 100644 index 0000000000..29dc30ba19 --- /dev/null +++ b/lib/ccan/list/list.c @@ -0,0 +1,43 @@ +/* Licensed under LGPLv2.1+ - see LICENSE file for details */ +#include <stdio.h> +#include <stdlib.h> +#include "list.h" + +static void *corrupt(const char *abortstr, + const struct list_node *head, + const struct list_node *node, + unsigned int count) +{ + if (abortstr) { + fprintf(stderr, + "%s: prev corrupt in node %p (%u) of %p\n", + abortstr, node, count, head); + abort(); + } + return NULL; +} + +struct list_node *list_check_node(const struct list_node *node, + const char *abortstr) +{ + const struct list_node *p, *n; + int count = 0; + + for (p = node, n = node->next; n != node; p = n, n = n->next) { + count++; + if (n->prev != p) + return corrupt(abortstr, node, n, count); + } + /* Check prev on head node. */ + if (node->prev != p) + return corrupt(abortstr, node, node, 0); + + return (struct list_node *)node; +} + +struct list_head *list_check(const struct list_head *h, const char *abortstr) +{ + if (!list_check_node(&h->n, abortstr)) + return NULL; + return (struct list_head *)h; +} diff --git a/lib/ccan/list/list.d b/lib/ccan/list/list.d new file mode 100644 index 0000000000..dd249588c4 --- /dev/null +++ b/lib/ccan/list/list.d @@ -0,0 +1,27 @@ +ccan/list/list.o: ccan/list/list.c /usr/include/stdio.h \ + /usr/include/features.h /usr/include/i386-linux-gnu/bits/predefs.h \ + /usr/include/i386-linux-gnu/sys/cdefs.h \ + /usr/include/i386-linux-gnu/bits/wordsize.h \ + /usr/include/i386-linux-gnu/gnu/stubs.h \ + /usr/include/i386-linux-gnu/gnu/stubs-32.h \ + /usr/lib/gcc/i686-linux-gnu/4.5.4/include/stddef.h \ + /usr/include/i386-linux-gnu/bits/types.h \ + /usr/include/i386-linux-gnu/bits/typesizes.h /usr/include/libio.h \ + /usr/include/_G_config.h /usr/include/wchar.h \ + /usr/lib/gcc/i686-linux-gnu/4.5.4/include/stdarg.h \ + /usr/include/i386-linux-gnu/bits/stdio_lim.h \ + /usr/include/i386-linux-gnu/bits/sys_errlist.h /usr/include/stdlib.h \ + /usr/include/i386-linux-gnu/bits/waitflags.h \ + /usr/include/i386-linux-gnu/bits/waitstatus.h /usr/include/endian.h \ + /usr/include/i386-linux-gnu/bits/endian.h \ + /usr/include/i386-linux-gnu/bits/byteswap.h \ + /usr/include/i386-linux-gnu/sys/types.h /usr/include/time.h \ + /usr/include/i386-linux-gnu/sys/select.h \ + /usr/include/i386-linux-gnu/bits/select.h \ + /usr/include/i386-linux-gnu/bits/sigset.h \ + /usr/include/i386-linux-gnu/bits/time.h \ + /usr/include/i386-linux-gnu/sys/sysmacros.h \ + /usr/include/i386-linux-gnu/bits/pthreadtypes.h /usr/include/alloca.h \ + ccan/list/list.h /usr/lib/gcc/i686-linux-gnu/4.5.4/include/stdbool.h \ + /usr/include/assert.h ccan/container_of/container_of.h config.h \ + ccan/check_type/check_type.h diff --git a/lib/ccan/list/list.h b/lib/ccan/list/list.h new file mode 100644 index 0000000000..0091ea4b65 --- /dev/null +++ b/lib/ccan/list/list.h @@ -0,0 +1,469 @@ +/* Licensed under LGPLv2.1+ - see LICENSE file for details */ +#ifndef CCAN_LIST_H +#define CCAN_LIST_H +#include <stdbool.h> +#include <assert.h> +#include <ccan/container_of/container_of.h> +#include <ccan/check_type/check_type.h> + +/** + * struct list_node - an entry in a doubly-linked list + * @next: next entry (self if empty) + * @prev: previous entry (self if empty) + * + * This is used as an entry in a linked list. + * Example: + * struct child { + * const char *name; + * // Linked list of all us children. + * struct list_node list; + * }; + */ +struct list_node +{ + struct list_node *next, *prev; +}; + +/** + * struct list_head - the head of a doubly-linked list + * @h: the list_head (containing next and prev pointers) + * + * This is used as the head of a linked list. + * Example: + * struct parent { + * const char *name; + * struct list_head children; + * unsigned int num_children; + * }; + */ +struct list_head +{ + struct list_node n; +}; + +/** + * list_check - check head of a list for consistency + * @h: the list_head + * @abortstr: the location to print on aborting, or NULL. + * + * Because list_nodes have redundant information, consistency checking between + * the back and forward links can be done. This is useful as a debugging check. + * If @abortstr is non-NULL, that will be printed in a diagnostic if the list + * is inconsistent, and the function will abort. + * + * Returns the list head if the list is consistent, NULL if not (it + * can never return NULL if @abortstr is set). + * + * See also: list_check_node() + * + * Example: + * static void dump_parent(struct parent *p) + * { + * struct child *c; + * + * printf("%s (%u children):\n", p->name, p->num_children); + * list_check(&p->children, "bad child list"); + * list_for_each(&p->children, c, list) + * printf(" -> %s\n", c->name); + * } + */ +struct list_head *list_check(const struct list_head *h, const char *abortstr); + +/** + * list_check_node - check node of a list for consistency + * @n: the list_node + * @abortstr: the location to print on aborting, or NULL. + * + * Check consistency of the list node is in (it must be in one). + * + * See also: list_check() + * + * Example: + * static void dump_child(const struct child *c) + * { + * list_check_node(&c->list, "bad child list"); + * printf("%s\n", c->name); + * } + */ +struct list_node *list_check_node(const struct list_node *n, + const char *abortstr); + +#ifdef CCAN_LIST_DEBUG +#define list_debug(h) list_check((h), __func__) +#define list_debug_node(n) list_check_node((n), __func__) +#else +#define list_debug(h) (h) +#define list_debug_node(n) (n) +#endif + +/** + * LIST_HEAD_INIT - initializer for an empty list_head + * @name: the name of the list. + * + * Explicit initializer for an empty list. + * + * See also: + * LIST_HEAD, list_head_init() + * + * Example: + * static struct list_head my_list = LIST_HEAD_INIT(my_list); + */ +#define LIST_HEAD_INIT(name) { { &name.n, &name.n } } + +/** + * LIST_HEAD - define and initialize an empty list_head + * @name: the name of the list. + * + * The LIST_HEAD macro defines a list_head and initializes it to an empty + * list. It can be prepended by "static" to define a static list_head. + * + * See also: + * LIST_HEAD_INIT, list_head_init() + * + * Example: + * static LIST_HEAD(my_global_list); + */ +#define LIST_HEAD(name) \ + struct list_head name = LIST_HEAD_INIT(name) + +/** + * list_head_init - initialize a list_head + * @h: the list_head to set to the empty list + * + * Example: + * ... + * struct parent *parent = malloc(sizeof(*parent)); + * + * list_head_init(&parent->children); + * parent->num_children = 0; + */ +static inline void list_head_init(struct list_head *h) +{ + h->n.next = h->n.prev = &h->n; +} + +/** + * list_add - add an entry at the start of a linked list. + * @h: the list_head to add the node to + * @n: the list_node to add to the list. + * + * The list_node does not need to be initialized; it will be overwritten. + * Example: + * struct child *child = malloc(sizeof(*child)); + * + * child->name = "marvin"; + * list_add(&parent->children, &child->list); + * parent->num_children++; + */ +static inline void list_add(struct list_head *h, struct list_node *n) +{ + n->next = h->n.next; + n->prev = &h->n; + h->n.next->prev = n; + h->n.next = n; + (void)list_debug(h); +} + +/** + * list_add_tail - add an entry at the end of a linked list. + * @h: the list_head to add the node to + * @n: the list_node to add to the list. + * + * The list_node does not need to be initialized; it will be overwritten. + * Example: + * list_add_tail(&parent->children, &child->list); + * parent->num_children++; + */ +static inline void list_add_tail(struct list_head *h, struct list_node *n) +{ + n->next = &h->n; + n->prev = h->n.prev; + h->n.prev->next = n; + h->n.prev = n; + (void)list_debug(h); +} + +/** + * list_empty - is a list empty? + * @h: the list_head + * + * If the list is empty, returns true. + * + * Example: + * assert(list_empty(&parent->children) == (parent->num_children == 0)); + */ +static inline bool list_empty(const struct list_head *h) +{ + (void)list_debug(h); + return h->n.next == &h->n; +} + +/** + * list_del - delete an entry from an (unknown) linked list. + * @n: the list_node to delete from the list. + * + * Note that this leaves @n in an undefined state; it can be added to + * another list, but not deleted again. + * + * See also: + * list_del_from() + * + * Example: + * list_del(&child->list); + * parent->num_children--; + */ +static inline void list_del(struct list_node *n) +{ + (void)list_debug_node(n); + n->next->prev = n->prev; + n->prev->next = n->next; +#ifdef CCAN_LIST_DEBUG + /* Catch use-after-del. */ + n->next = n->prev = NULL; +#endif +} + +/** + * list_del_from - delete an entry from a known linked list. + * @h: the list_head the node is in. + * @n: the list_node to delete from the list. + * + * This explicitly indicates which list a node is expected to be in, + * which is better documentation and can catch more bugs. + * + * See also: list_del() + * + * Example: + * list_del_from(&parent->children, &child->list); + * parent->num_children--; + */ +static inline void list_del_from(struct list_head *h, struct list_node *n) +{ +#ifdef CCAN_LIST_DEBUG + { + /* Thorough check: make sure it was in list! */ + struct list_node *i; + for (i = h->n.next; i != n; i = i->next) + assert(i != &h->n); + } +#endif /* CCAN_LIST_DEBUG */ + + /* Quick test that catches a surprising number of bugs. */ + assert(!list_empty(h)); + list_del(n); +} + +/** + * list_entry - convert a list_node back into the structure containing it. + * @n: the list_node + * @type: the type of the entry + * @member: the list_node member of the type + * + * Example: + * // First list entry is children.next; convert back to child. + * child = list_entry(parent->children.n.next, struct child, list); + * + * See Also: + * list_top(), list_for_each() + */ +#define list_entry(n, type, member) container_of(n, type, member) + +/** + * list_top - get the first entry in a list + * @h: the list_head + * @type: the type of the entry + * @member: the list_node member of the type + * + * If the list is empty, returns NULL. + * + * Example: + * struct child *first; + * first = list_top(&parent->children, struct child, list); + */ +#define list_top(h, type, member) \ + ((type *)list_top_((h), list_off_(type, member))) + +static inline const void *list_top_(const struct list_head *h, size_t off) +{ + if (list_empty(h)) + return NULL; + return (const char *)h->n.next - off; +} + +/** + * list_tail - get the last entry in a list + * @h: the list_head + * @type: the type of the entry + * @member: the list_node member of the type + * + * If the list is empty, returns NULL. + * + * Example: + * struct child *last; + * last = list_tail(&parent->children, struct child, list); + */ +#define list_tail(h, type, member) \ + ((type *)list_tail_((h), list_off_(type, member))) + +static inline const void *list_tail_(const struct list_head *h, size_t off) +{ + if (list_empty(h)) + return NULL; + return (const char *)h->n.prev - off; +} + +/** + * list_for_each - iterate through a list. + * @h: the list_head (warning: evaluated multiple times!) + * @i: the structure containing the list_node + * @member: the list_node member of the structure + * + * This is a convenient wrapper to iterate @i over the entire list. It's + * a for loop, so you can break and continue as normal. + * + * Example: + * list_for_each(&parent->children, child, list) + * printf("Name: %s\n", child->name); + */ +#define list_for_each(h, i, member) \ + list_for_each_off(h, i, list_off_var_(i, member)) + +/** + * list_for_each_rev - iterate through a list backwards. + * @h: the list_head + * @i: the structure containing the list_node + * @member: the list_node member of the structure + * + * This is a convenient wrapper to iterate @i over the entire list. It's + * a for loop, so you can break and continue as normal. + * + * Example: + * list_for_each_rev(&parent->children, child, list) + * printf("Name: %s\n", child->name); + */ +#define list_for_each_rev(h, i, member) \ + for (i = container_of_var(list_debug(h)->n.prev, i, member); \ + &i->member != &(h)->n; \ + i = container_of_var(i->member.prev, i, member)) + +/** + * list_for_each_safe - iterate through a list, maybe during deletion + * @h: the list_head + * @i: the structure containing the list_node + * @nxt: the structure containing the list_node + * @member: the list_node member of the structure + * + * This is a convenient wrapper to iterate @i over the entire list. It's + * a for loop, so you can break and continue as normal. The extra variable + * @nxt is used to hold the next element, so you can delete @i from the list. + * + * Example: + * struct child *next; + * list_for_each_safe(&parent->children, child, next, list) { + * list_del(&child->list); + * parent->num_children--; + * } + */ +#define list_for_each_safe(h, i, nxt, member) \ + list_for_each_safe_off(h, i, nxt, list_off_var_(i, member)) + +/** + * list_for_each_off - iterate through a list of memory regions. + * @h: the list_head + * @i: the pointer to a memory region wich contains list node data. + * @off: offset(relative to @i) at which list node data resides. + * + * This is a low-level wrapper to iterate @i over the entire list, used to + * implement all oher, more high-level, for-each constructs. It's a for loop, + * so you can break and continue as normal. + * + * WARNING! Being the low-level macro that it is, this wrapper doesn't know + * nor care about the type of @i. The only assumtion made is that @i points + * to a chunk of memory that at some @offset, relative to @i, contains a + * properly filled `struct node_list' which in turn contains pointers to + * memory chunks and it's turtles all the way down. Whith all that in mind + * remember that given the wrong pointer/offset couple this macro will + * happilly churn all you memory untill SEGFAULT stops it, in other words + * caveat emptor. + * + * It is worth mentioning that one of legitimate use-cases for that wrapper + * is operation on opaque types with known offset for `struct list_node' + * member(preferably 0), because it allows you not to disclose the type of + * @i. + * + * Example: + * list_for_each_off(&parent->children, child, + * offsetof(struct child, list)) + * printf("Name: %s\n", child->name); + */ +#define list_for_each_off(h, i, off) \ + for (i = list_node_to_off_(list_debug(h)->n.next, (off)); \ + list_node_from_off_((void *)i, (off)) != &(h)->n; \ + i = list_node_to_off_(list_node_from_off_((void *)i, (off))->next, \ + (off))) + +/** + * list_for_each_safe_off - iterate through a list of memory regions, maybe + * during deletion + * @h: the list_head + * @i: the pointer to a memory region wich contains list node data. + * @nxt: the structure containing the list_node + * @off: offset(relative to @i) at which list node data resides. + * + * For details see `list_for_each_off' and `list_for_each_safe' + * descriptions. + * + * Example: + * list_for_each_safe_off(&parent->children, child, + * next, offsetof(struct child, list)) + * printf("Name: %s\n", child->name); + */ +#define list_for_each_safe_off(h, i, nxt, off) \ + for (i = list_node_to_off_(list_debug(h)->n.next, (off)), \ + nxt = list_node_to_off_(list_node_from_off_(i, (off))->next, \ + (off)); \ + list_node_from_off_(i, (off)) != &(h)->n; \ + i = nxt, \ + nxt = list_node_to_off_(list_node_from_off_(i, (off))->next, \ + (off))) + + +/* Other -off variants. */ +#define list_entry_off(n, type, off) \ + ((type *)list_node_from_off_((n), (off))) + +#define list_head_off(h, type, off) \ + ((type *)list_head_off((h), (off))) + +#define list_tail_off(h, type, off) \ + ((type *)list_tail_((h), (off))) + +#define list_add_off(h, n, off) \ + list_add((h), list_node_from_off_((n), (off))) + +#define list_del_off(n, off) \ + list_del(list_node_from_off_((n), (off))) + +#define list_del_from_off(h, n, off) \ + list_del_from(h, list_node_from_off_((n), (off))) + +/* Offset helper functions so we only single-evaluate. */ +static inline void *list_node_to_off_(struct list_node *node, size_t off) +{ + return (void *)((char *)node - off); +} +static inline struct list_node *list_node_from_off_(void *ptr, size_t off) +{ + return (struct list_node *)((char *)ptr + off); +} + +/* Get the offset of the member, but make sure it's a list_node. */ +#define list_off_(type, member) \ + (container_off(type, member) + \ + check_type(((type *)0)->member, struct list_node)) + +#define list_off_var_(var, member) \ + (container_off_var(var, member) + \ + check_type(var->member, struct list_node)) + +#endif /* CCAN_LIST_H */ diff --git a/lib/ccan/list/test/compile_ok-constant.c b/lib/ccan/list/test/compile_ok-constant.c new file mode 100644 index 0000000000..c57cdadc31 --- /dev/null +++ b/lib/ccan/list/test/compile_ok-constant.c @@ -0,0 +1,49 @@ +#include <ccan/list/list.h> +#include <ccan/tap/tap.h> +#include <ccan/list/list.c> +#include <stdbool.h> +#include <stdio.h> + +struct child { + const char *name; + struct list_node list; +}; + +static bool children(const struct list_head *list) +{ + return !list_empty(list); +} + +static const struct child *first_child(const struct list_head *list) +{ + return list_top(list, struct child, list); +} + +static const struct child *last_child(const struct list_head *list) +{ + return list_tail(list, struct child, list); +} + +static void check_children(const struct list_head *list) +{ + list_check(list, "bad child list"); +} + +static void print_children(const struct list_head *list) +{ + const struct child *c; + list_for_each(list, c, list) + printf("%s\n", c->name); +} + +int main(void) +{ + LIST_HEAD(h); + + children(&h); + first_child(&h); + last_child(&h); + check_children(&h); + print_children(&h); + return 0; +} diff --git a/lib/ccan/list/test/helper.c b/lib/ccan/list/test/helper.c new file mode 100644 index 0000000000..8903ac1738 --- /dev/null +++ b/lib/ccan/list/test/helper.c @@ -0,0 +1,54 @@ +#include <stdlib.h> +#include <stdbool.h> +#include <time.h> + +#include <ccan/list/list.h> +#include "helper.h" + +#define ANSWER_TO_THE_ULTIMATE_QUESTION_OF_LIFE_THE_UNIVERSE_AND_EVERYTHING \ + (42) + +struct opaque { + struct list_node list; + size_t secret_offset; + char secret_drawer[42]; +}; + +static bool not_randomized = true; + +struct opaque *create_opaque_blob(void) +{ + struct opaque *blob = calloc(1, sizeof(struct opaque)); + + if (not_randomized) { + srandom((int)time(NULL)); + not_randomized = false; + } + + blob->secret_offset = random() % (sizeof(blob->secret_drawer)); + blob->secret_drawer[blob->secret_offset] = + ANSWER_TO_THE_ULTIMATE_QUESTION_OF_LIFE_THE_UNIVERSE_AND_EVERYTHING; + + return blob; +} + +bool if_blobs_know_the_secret(struct opaque *blob) +{ + bool answer = true; + int i; + for (i = 0; i < sizeof(blob->secret_drawer) / + sizeof(blob->secret_drawer[0]); i++) + if (i != blob->secret_offset) + answer = answer && (blob->secret_drawer[i] == 0); + else + answer = answer && + (blob->secret_drawer[blob->secret_offset] == + ANSWER_TO_THE_ULTIMATE_QUESTION_OF_LIFE_THE_UNIVERSE_AND_EVERYTHING); + + return answer; +} + +void destroy_opaque_blob(struct opaque *blob) +{ + free(blob); +} diff --git a/lib/ccan/list/test/helper.h b/lib/ccan/list/test/helper.h new file mode 100644 index 0000000000..a09a3a997b --- /dev/null +++ b/lib/ccan/list/test/helper.h @@ -0,0 +1,7 @@ +/* These are in a separate C file so we can test undefined structures. */ +struct opaque; +typedef struct opaque opaque_t; + +opaque_t *create_opaque_blob(void); +bool if_blobs_know_the_secret(opaque_t *blob); +void destroy_opaque_blob(opaque_t *blob); diff --git a/lib/ccan/list/test/run-check-corrupt.c b/lib/ccan/list/test/run-check-corrupt.c new file mode 100644 index 0000000000..5dd9f9cc83 --- /dev/null +++ b/lib/ccan/list/test/run-check-corrupt.c @@ -0,0 +1,89 @@ +#include <setjmp.h> +#include <stdlib.h> +#include <stdio.h> +#include <stdarg.h> +#include <string.h> +#include <err.h> + +/* We don't actually want it to exit... */ +static jmp_buf aborted; +#define abort() longjmp(aborted, 1) + +#define fprintf my_fprintf +static char printf_buffer[1000]; + +static int my_fprintf(FILE *stream, const char *format, ...) +{ + va_list ap; + int ret; + va_start(ap, format); + ret = vsprintf(printf_buffer, format, ap); + va_end(ap); + return ret; +} + +#include <ccan/list/list.h> +#include <ccan/tap/tap.h> +#include <ccan/list/list.c> + +int main(int argc, char *argv[]) +{ + struct list_head list; + struct list_node n1; + char expect[100]; + + plan_tests(9); + /* Empty list. */ + list.n.next = &list.n; + list.n.prev = &list.n; + ok1(list_check(&list, NULL) == &list); + + /* Bad back ptr */ + list.n.prev = &n1; + /* Non-aborting version. */ + ok1(list_check(&list, NULL) == NULL); + + /* Aborting version. */ + sprintf(expect, "test message: prev corrupt in node %p (0) of %p\n", + &list, &list); + if (setjmp(aborted) == 0) { + list_check(&list, "test message"); + fail("list_check on empty with bad back ptr didn't fail!"); + } else { + ok1(strcmp(printf_buffer, expect) == 0); + } + + /* n1 in list. */ + list.n.next = &n1; + list.n.prev = &n1; + n1.prev = &list.n; + n1.next = &list.n; + ok1(list_check(&list, NULL) == &list); + ok1(list_check_node(&n1, NULL) == &n1); + + /* Bad back ptr */ + n1.prev = &n1; + ok1(list_check(&list, NULL) == NULL); + ok1(list_check_node(&n1, NULL) == NULL); + + /* Aborting version. */ + sprintf(expect, "test message: prev corrupt in node %p (1) of %p\n", + &n1, &list); + if (setjmp(aborted) == 0) { + list_check(&list, "test message"); + fail("list_check on n1 bad back ptr didn't fail!"); + } else { + ok1(strcmp(printf_buffer, expect) == 0); + } + + sprintf(expect, "test message: prev corrupt in node %p (0) of %p\n", + &n1, &n1); + if (setjmp(aborted) == 0) { + list_check_node(&n1, "test message"); + fail("list_check_node on n1 bad back ptr didn't fail!"); + } else { + ok1(strcmp(printf_buffer, expect) == 0); + } + + return exit_status(); +} diff --git a/lib/ccan/list/test/run-list_del_from-assert.c b/lib/ccan/list/test/run-list_del_from-assert.c new file mode 100644 index 0000000000..05d6cad62c --- /dev/null +++ b/lib/ccan/list/test/run-list_del_from-assert.c @@ -0,0 +1,36 @@ +#define CCAN_LIST_DEBUG 1 +#include <ccan/list/list.h> +#include <ccan/tap/tap.h> +#include <ccan/list/list.c> +#include <sys/types.h> +#include <sys/wait.h> +#include <unistd.h> +#include <signal.h> + +int main(int argc, char *argv[]) +{ + struct list_head list1, list2; + struct list_node n1, n2, n3; + pid_t child; + int status; + + plan_tests(1); + list_head_init(&list1); + list_head_init(&list2); + list_add(&list1, &n1); + list_add(&list2, &n2); + list_add_tail(&list2, &n3); + + child = fork(); + if (child) { + wait(&status); + } else { + /* This should abort. */ + list_del_from(&list1, &n3); + exit(0); + } + + ok1(WIFSIGNALED(status) && WTERMSIG(status) == SIGABRT); + list_del_from(&list2, &n3); + return exit_status(); +} diff --git a/lib/ccan/list/test/run-single-eval.c b/lib/ccan/list/test/run-single-eval.c new file mode 100644 index 0000000000..f90eed357a --- /dev/null +++ b/lib/ccan/list/test/run-single-eval.c @@ -0,0 +1,168 @@ +/* Make sure macros only evaluate their args once. */ +#include <ccan/list/list.h> +#include <ccan/tap/tap.h> +#include <ccan/list/list.c> + +struct parent { + const char *name; + struct list_head children; + unsigned int num_children; + int eval_count; +}; + +struct child { + const char *name; + struct list_node list; +}; + +static LIST_HEAD(static_list); + +#define ref(obj, counter) ((counter)++, (obj)) + +int main(int argc, char *argv[]) +{ + struct parent parent; + struct child c1, c2, c3, *c, *n; + unsigned int i; + unsigned int static_count = 0, parent_count = 0, list_count = 0, + node_count = 0; + struct list_head list = LIST_HEAD_INIT(list); + + plan_tests(74); + /* Test LIST_HEAD, LIST_HEAD_INIT, list_empty and check_list */ + ok1(list_empty(ref(&static_list, static_count))); + ok1(static_count == 1); + ok1(list_check(ref(&static_list, static_count), NULL)); + ok1(static_count == 2); + ok1(list_empty(ref(&list, list_count))); + ok1(list_count == 1); + ok1(list_check(ref(&list, list_count), NULL)); + ok1(list_count == 2); + + parent.num_children = 0; + list_head_init(ref(&parent.children, parent_count)); + ok1(parent_count == 1); + /* Test list_head_init */ + ok1(list_empty(ref(&parent.children, parent_count))); + ok1(parent_count == 2); + ok1(list_check(ref(&parent.children, parent_count), NULL)); + ok1(parent_count == 3); + + c2.name = "c2"; + list_add(ref(&parent.children, parent_count), &c2.list); + ok1(parent_count == 4); + /* Test list_add and !list_empty. */ + ok1(!list_empty(ref(&parent.children, parent_count))); + ok1(parent_count == 5); + ok1(c2.list.next == &parent.children.n); + ok1(c2.list.prev == &parent.children.n); + ok1(parent.children.n.next == &c2.list); + ok1(parent.children.n.prev == &c2.list); + /* Test list_check */ + ok1(list_check(ref(&parent.children, parent_count), NULL)); + ok1(parent_count == 6); + + c1.name = "c1"; + list_add(ref(&parent.children, parent_count), &c1.list); + ok1(parent_count == 7); + /* Test list_add and !list_empty. */ + ok1(!list_empty(ref(&parent.children, parent_count))); + ok1(parent_count == 8); + ok1(c2.list.next == &parent.children.n); + ok1(c2.list.prev == &c1.list); + ok1(parent.children.n.next == &c1.list); + ok1(parent.children.n.prev == &c2.list); + ok1(c1.list.next == &c2.list); + ok1(c1.list.prev == &parent.children.n); + /* Test list_check */ + ok1(list_check(ref(&parent.children, parent_count), NULL)); + ok1(parent_count == 9); + + c3.name = "c3"; + list_add_tail(ref(&parent.children, parent_count), &c3.list); + ok1(parent_count == 10); + /* Test list_add_tail and !list_empty. */ + ok1(!list_empty(ref(&parent.children, parent_count))); + ok1(parent_count == 11); + ok1(parent.children.n.next == &c1.list); + ok1(parent.children.n.prev == &c3.list); + ok1(c1.list.next == &c2.list); + ok1(c1.list.prev == &parent.children.n); + ok1(c2.list.next == &c3.list); + ok1(c2.list.prev == &c1.list); + ok1(c3.list.next == &parent.children.n); + ok1(c3.list.prev == &c2.list); + /* Test list_check */ + ok1(list_check(ref(&parent.children, parent_count), NULL)); + ok1(parent_count == 12); + + /* Test list_check_node */ + ok1(list_check_node(&c1.list, NULL)); + ok1(list_check_node(&c2.list, NULL)); + ok1(list_check_node(&c3.list, NULL)); + + /* Test list_top */ + ok1(list_top(ref(&parent.children, parent_count), struct child, list) == &c1); + ok1(parent_count == 13); + + /* Test list_tail */ + ok1(list_tail(ref(&parent.children, parent_count), struct child, list) == &c3); + ok1(parent_count == 14); + + /* Test list_for_each. */ + i = 0; + list_for_each(&parent.children, c, list) { + switch (i++) { + case 0: + ok1(c == &c1); + break; + case 1: + ok1(c == &c2); + break; + case 2: + ok1(c == &c3); + break; + } + if (i > 2) + break; + } + ok1(i == 3); + + /* Test list_for_each_safe, list_del and list_del_from. */ + i = 0; + list_for_each_safe(&parent.children, c, n, list) { + switch (i++) { + case 0: + ok1(c == &c1); + list_del(ref(&c->list, node_count)); + ok1(node_count == 1); + break; + case 1: + ok1(c == &c2); + list_del_from(ref(&parent.children, parent_count), + ref(&c->list, node_count)); + ok1(node_count == 2); + break; + case 2: + ok1(c == &c3); + list_del_from(ref(&parent.children, parent_count), + ref(&c->list, node_count)); + ok1(node_count == 3); + break; + } + ok1(list_check(ref(&parent.children, parent_count), NULL)); + if (i > 2) + break; + } + ok1(i == 3); + ok1(parent_count == 19); + ok1(list_empty(ref(&parent.children, parent_count))); + ok1(parent_count == 20); + + /* Test list_top/list_tail on empty list. */ + ok1(list_top(ref(&parent.children, parent_count), struct child, list) == NULL); + ok1(parent_count == 21); + ok1(list_tail(ref(&parent.children, parent_count), struct child, list) == NULL); + ok1(parent_count == 22); + return exit_status(); +} diff --git a/lib/ccan/list/test/run-with-debug.c b/lib/ccan/list/test/run-with-debug.c new file mode 100644 index 0000000000..d0902421f1 --- /dev/null +++ b/lib/ccan/list/test/run-with-debug.c @@ -0,0 +1,3 @@ +/* Just like run.c, but with all debug checks enabled. */ +#define CCAN_LIST_DEBUG 1 +#include <ccan/list/test/run.c> diff --git a/lib/ccan/list/test/run.c b/lib/ccan/list/test/run.c new file mode 100644 index 0000000000..952a0e15e6 --- /dev/null +++ b/lib/ccan/list/test/run.c @@ -0,0 +1,200 @@ +#include <ccan/list/list.h> +#include <ccan/tap/tap.h> +#include <ccan/list/list.c> +#include "helper.h" + +struct parent { + const char *name; + struct list_head children; + unsigned int num_children; +}; + +struct child { + const char *name; + struct list_node list; +}; + +static LIST_HEAD(static_list); + +int main(int argc, char *argv[]) +{ + struct parent parent; + struct child c1, c2, c3, *c, *n; + unsigned int i; + struct list_head list = LIST_HEAD_INIT(list); + opaque_t *q, *nq; + struct list_head opaque_list = LIST_HEAD_INIT(opaque_list); + + plan_tests(65); + /* Test LIST_HEAD, LIST_HEAD_INIT, list_empty and check_list */ + ok1(list_empty(&static_list)); + ok1(list_check(&static_list, NULL)); + ok1(list_empty(&list)); + ok1(list_check(&list, NULL)); + + parent.num_children = 0; + list_head_init(&parent.children); + /* Test list_head_init */ + ok1(list_empty(&parent.children)); + ok1(list_check(&parent.children, NULL)); + + c2.name = "c2"; + list_add(&parent.children, &c2.list); + /* Test list_add and !list_empty. */ + ok1(!list_empty(&parent.children)); + ok1(c2.list.next == &parent.children.n); + ok1(c2.list.prev == &parent.children.n); + ok1(parent.children.n.next == &c2.list); + ok1(parent.children.n.prev == &c2.list); + /* Test list_check */ + ok1(list_check(&parent.children, NULL)); + + c1.name = "c1"; + list_add(&parent.children, &c1.list); + /* Test list_add and !list_empty. */ + ok1(!list_empty(&parent.children)); + ok1(c2.list.next == &parent.children.n); + ok1(c2.list.prev == &c1.list); + ok1(parent.children.n.next == &c1.list); + ok1(parent.children.n.prev == &c2.list); + ok1(c1.list.next == &c2.list); + ok1(c1.list.prev == &parent.children.n); + /* Test list_check */ + ok1(list_check(&parent.children, NULL)); + + c3.name = "c3"; + list_add_tail(&parent.children, &c3.list); + /* Test list_add_tail and !list_empty. */ + ok1(!list_empty(&parent.children)); + ok1(parent.children.n.next == &c1.list); + ok1(parent.children.n.prev == &c3.list); + ok1(c1.list.next == &c2.list); + ok1(c1.list.prev == &parent.children.n); + ok1(c2.list.next == &c3.list); + ok1(c2.list.prev == &c1.list); + ok1(c3.list.next == &parent.children.n); + ok1(c3.list.prev == &c2.list); + /* Test list_check */ + ok1(list_check(&parent.children, NULL)); + + /* Test list_check_node */ + ok1(list_check_node(&c1.list, NULL)); + ok1(list_check_node(&c2.list, NULL)); + ok1(list_check_node(&c3.list, NULL)); + + /* Test list_top */ + ok1(list_top(&parent.children, struct child, list) == &c1); + + /* Test list_tail */ + ok1(list_tail(&parent.children, struct child, list) == &c3); + + /* Test list_for_each. */ + i = 0; + list_for_each(&parent.children, c, list) { + switch (i++) { + case 0: + ok1(c == &c1); + break; + case 1: + ok1(c == &c2); + break; + case 2: + ok1(c == &c3); + break; + } + if (i > 2) + break; + } + ok1(i == 3); + + /* Test list_for_each_rev. */ + i = 0; + list_for_each_rev(&parent.children, c, list) { + switch (i++) { + case 0: + ok1(c == &c3); + break; + case 1: + ok1(c == &c2); + break; + case 2: + ok1(c == &c1); + break; + } + if (i > 2) + break; + } + ok1(i == 3); + + /* Test list_for_each_safe, list_del and list_del_from. */ + i = 0; + list_for_each_safe(&parent.children, c, n, list) { + switch (i++) { + case 0: + ok1(c == &c1); + list_del(&c->list); + break; + case 1: + ok1(c == &c2); + list_del_from(&parent.children, &c->list); + break; + case 2: + ok1(c == &c3); + list_del_from(&parent.children, &c->list); + break; + } + ok1(list_check(&parent.children, NULL)); + if (i > 2) + break; + } + ok1(i == 3); + ok1(list_empty(&parent.children)); + + /* Test list_for_each_off. */ + list_add_tail(&opaque_list, + (struct list_node *)create_opaque_blob()); + list_add_tail(&opaque_list, + (struct list_node *)create_opaque_blob()); + list_add_tail(&opaque_list, + (struct list_node *)create_opaque_blob()); + + i = 0; + + list_for_each_off(&opaque_list, q, 0) { + i++; + ok1(if_blobs_know_the_secret(q)); + } + ok1(i == 3); + + /* Test list_for_each_safe_off, list_del_off and list_del_from_off. */ + i = 0; + list_for_each_safe_off(&opaque_list, q, nq, 0) { + switch (i++) { + case 0: + ok1(if_blobs_know_the_secret(q)); + list_del_off(q, 0); + destroy_opaque_blob(q); + break; + case 1: + ok1(if_blobs_know_the_secret(q)); + list_del_from_off(&opaque_list, q, 0); + destroy_opaque_blob(q); + break; + case 2: + ok1(c == &c3); + list_del_from_off(&opaque_list, q, 0); + destroy_opaque_blob(q); + break; + } + ok1(list_check(&opaque_list, NULL)); + if (i > 2) + break; + } + ok1(i == 3); + ok1(list_empty(&opaque_list)); + + /* Test list_top/list_tail on empty list. */ + ok1(list_top(&parent.children, struct child, list) == NULL); + ok1(list_tail(&parent.children, struct child, list) == NULL); + return exit_status(); +} |