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Fix AST_LIST_INSERT_BEFORE_CURRENT() updating the wrong variable.

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AST_LIST_INSERT_BEFORE_CURRENT() could not be used twice in an iteration
or before AST_LIST_REMOVE_CURRENT() without corrupting the list.
AST_LIST_INSERT_BEFORE_CURRENT() could also corrupt the list if
AST_LIST_INSERT_BEFORE_CURRENT() or AST_LIST_REMOVE_CURRENT() is used on
the next iteration.

* Fixed cut and paste error using the wrong variable in
AST_LIST_INSERT_BEFORE_CURRENT().

* Added linked list unit tests for AST_LIST_INSERT_BEFORE_CURRENT(),
AST_LIST_APPEND_LIST(), and AST_LIST_INSERT_LIST_AFTER().


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@342661 65c4cc65-6c06-0410-ace0-fbb531ad65f3
certified/1.8.11
Richard Mudgett 14 years ago
parent 16c9d2231b
commit 2ae86be1f2
2 changed files with 117 additions and 31 deletions
Show Stats Download Patch File Download Diff File

2
include/asterisk/linkedlists.h
Unescape View File

@ -589,7 +589,7 @@ struct { \
(elm)->field.next = __list_head->first; \
__list_head->first = (elm); \
} \
__new_prev = (elm); \
__list_prev = (elm); \
} while (0)
#define AST_RWLIST_INSERT_BEFORE_CURRENT AST_LIST_INSERT_BEFORE_CURRENT

146
tests/test_linkedlists.c
Unescape View File

@ -48,9 +48,9 @@ static struct test_val b = { "B" };
static struct test_val c = { "C" };
static struct test_val d = { "D" };
AST_LIST_HEAD_NOLOCK(test_list, test_val);
AST_LIST_HEAD_NOLOCK(test_llist, test_val);
static int list_expect(struct test_list *test_list, char *expect, struct ast_str **buf)
static int list_expect(struct test_llist *test_list, const char *expect, struct ast_str **buf)
{
struct test_val *i;
@ -75,19 +75,20 @@ static int list_expect(struct test_list *test_list, char *expect, struct ast_str
return AST_TEST_FAIL; \
}
AST_TEST_DEFINE(ll_tests)
AST_TEST_DEFINE(single_ll_tests)
{
struct ast_str *buf;
struct test_list test_list = { 0, };
struct test_llist test_list = { 0, };
struct test_llist other_list = { 0, };
struct test_val *bogus;
switch (cmd) {
case TEST_INIT:
info->name = "ll_tests";
info->category = "/main/linkedlists";
info->summary = "linked list unit test";
info->summary = "single linked list unit test";
info->description =
"Test the linked list API";
"Test the single linked list API";
return AST_TEST_NOT_RUN;
case TEST_EXECUTE:
break;
@ -111,29 +112,25 @@ AST_TEST_DEFINE(ll_tests)
MATCH_OR_FAIL(&test_list, "A", buf);
AST_LIST_INSERT_HEAD(&test_list, &b, list);
MATCH_OR_FAIL(&test_list, "BA", buf);
AST_LIST_INSERT_HEAD(&test_list, &c, list);
MATCH_OR_FAIL(&test_list, "CBA", buf);
AST_LIST_INSERT_HEAD(&test_list, &d, list);
MATCH_OR_FAIL(&test_list, "DCBA", buf);
AST_LIST_REMOVE_HEAD(&test_list, list);
MATCH_OR_FAIL(&test_list, "CBA", buf);
AST_LIST_REMOVE_HEAD(&test_list, list);
MATCH_OR_FAIL(&test_list, "BA", buf);
AST_LIST_REMOVE_HEAD(&test_list, list);
MATCH_OR_FAIL(&test_list, "A", buf);
AST_LIST_REMOVE_HEAD(&test_list, list);
MATCH_OR_FAIL(&test_list, "", buf);
if (AST_LIST_REMOVE_HEAD(&test_list, list)) {
ast_test_status_update(test, "Somehow removed an item from the head of a list that didn't exist\n");
return AST_TEST_FAIL;
}
MATCH_OR_FAIL(&test_list, "", buf);
/* ** */
if (!AST_LIST_EMPTY(&test_list)) {
ast_test_status_update(test, "List should be empty\n");
return AST_TEST_FAIL;
}
/* ** */
AST_LIST_INSERT_TAIL(&test_list, &a, list);
MATCH_OR_FAIL(&test_list, "A", buf);
AST_LIST_INSERT_TAIL(&test_list, &b, list);
@ -142,19 +139,15 @@ AST_TEST_DEFINE(ll_tests)
MATCH_OR_FAIL(&test_list, "ABC", buf);
AST_LIST_INSERT_TAIL(&test_list, &d, list);
MATCH_OR_FAIL(&test_list, "ABCD", buf);
if (AST_LIST_REMOVE(&test_list, bogus, list)) {
ast_test_status_update(test, "AST_LIST_REMOVE should safely return NULL for missing element\n");
return AST_TEST_FAIL;
}
bogus = NULL;
if (AST_LIST_REMOVE(&test_list, bogus, list)) {
ast_test_status_update(test, "AST_LIST_REMOVE should safely return NULL for element set to NULL\n");
return AST_TEST_FAIL;
}
AST_LIST_REMOVE(&test_list, &b, list);
MATCH_OR_FAIL(&test_list, "ACD", buf);
AST_LIST_REMOVE(&test_list, &d, list);
@ -163,29 +156,29 @@ AST_TEST_DEFINE(ll_tests)
MATCH_OR_FAIL(&test_list, "C", buf);
AST_LIST_REMOVE(&test_list, &c, list);
MATCH_OR_FAIL(&test_list, "", buf);
if (!AST_LIST_EMPTY(&test_list)) {
ast_test_status_update(test, "List should be empty\n");
return AST_TEST_FAIL;
}
if (AST_LIST_REMOVE(&test_list, bogus, list)) {
ast_test_status_update(test, "AST_LIST_REMOVE should safely return NULL asked to remove a NULL pointer from an empty list\n");
return AST_TEST_FAIL;
}
/* ** */
AST_LIST_INSERT_HEAD(&test_list, &a, list);
MATCH_OR_FAIL(&test_list, "A", buf);
AST_LIST_INSERT_TAIL(&test_list, &b, list);
MATCH_OR_FAIL(&test_list, "AB", buf);
AST_LIST_INSERT_AFTER(&test_list, &a, &c, list);
MATCH_OR_FAIL(&test_list, "ACB", buf);
AST_LIST_INSERT_AFTER(&test_list, &b, &d, list);
MATCH_OR_FAIL(&test_list, "ACBD", buf);
AST_LIST_INSERT_TAIL(&test_list, &c, list);
MATCH_OR_FAIL(&test_list, "AC", buf);
AST_LIST_INSERT_AFTER(&test_list, &a, &b, list);
MATCH_OR_FAIL(&test_list, "ABC", buf);
AST_LIST_INSERT_AFTER(&test_list, &c, &d, list);
MATCH_OR_FAIL(&test_list, "ABCD", buf);
ELEM_OR_FAIL(AST_LIST_FIRST(&test_list), &a);
ELEM_OR_FAIL(AST_LIST_LAST(&test_list), &d);
ELEM_OR_FAIL(AST_LIST_NEXT(&a, list), &c);
ELEM_OR_FAIL(AST_LIST_NEXT(&a, list), &b);
AST_LIST_TRAVERSE_SAFE_BEGIN(&test_list, bogus, list) {
AST_LIST_REMOVE_CURRENT(list);
@ -197,18 +190,111 @@ AST_TEST_DEFINE(ll_tests)
return AST_TEST_FAIL;
}
/* ** */
AST_LIST_INSERT_HEAD(&test_list, &a, list);
MATCH_OR_FAIL(&test_list, "A", buf);
AST_LIST_INSERT_TAIL(&test_list, &b, list);
MATCH_OR_FAIL(&test_list, "AB", buf);
AST_LIST_INSERT_HEAD(&other_list, &c, list);
MATCH_OR_FAIL(&other_list, "C", buf);
AST_LIST_INSERT_TAIL(&other_list, &d, list);
MATCH_OR_FAIL(&other_list, "CD", buf);
AST_LIST_APPEND_LIST(&test_list, &other_list, list);
MATCH_OR_FAIL(&test_list, "ABCD", buf);
MATCH_OR_FAIL(&other_list, "", buf);
AST_LIST_TRAVERSE_SAFE_BEGIN(&test_list, bogus, list) {
AST_LIST_REMOVE_CURRENT(list);
}
AST_LIST_TRAVERSE_SAFE_END;
if (!AST_LIST_EMPTY(&test_list)) {
ast_test_status_update(test, "List should be empty after traversing and removal. It wasn't.\n");
return AST_TEST_FAIL;
}
/* ** */
AST_LIST_INSERT_HEAD(&test_list, &a, list);
MATCH_OR_FAIL(&test_list, "A", buf);
AST_LIST_INSERT_TAIL(&test_list, &d, list);
MATCH_OR_FAIL(&test_list, "AD", buf);
AST_LIST_INSERT_HEAD(&other_list, &b, list);
MATCH_OR_FAIL(&other_list, "B", buf);
AST_LIST_INSERT_TAIL(&other_list, &c, list);
MATCH_OR_FAIL(&other_list, "BC", buf);
AST_LIST_INSERT_LIST_AFTER(&test_list, &other_list, &a, list);
MATCH_OR_FAIL(&test_list, "ABCD", buf);
MATCH_OR_FAIL(&other_list, "", buf);
AST_LIST_TRAVERSE_SAFE_BEGIN(&test_list, bogus, list) {
AST_LIST_REMOVE_CURRENT(list);
}
AST_LIST_TRAVERSE_SAFE_END;
if (!AST_LIST_EMPTY(&test_list)) {
ast_test_status_update(test, "List should be empty after traversing and removal. It wasn't.\n");
return AST_TEST_FAIL;
}
/* ** */
AST_LIST_INSERT_HEAD(&test_list, &a, list);
MATCH_OR_FAIL(&test_list, "A", buf);
AST_LIST_INSERT_TAIL(&test_list, &b, list);
MATCH_OR_FAIL(&test_list, "AB", buf);
AST_LIST_INSERT_HEAD(&other_list, &c, list);
MATCH_OR_FAIL(&other_list, "C", buf);
AST_LIST_INSERT_TAIL(&other_list, &d, list);
MATCH_OR_FAIL(&other_list, "CD", buf);
AST_LIST_INSERT_LIST_AFTER(&test_list, &other_list, &b, list);
MATCH_OR_FAIL(&test_list, "ABCD", buf);
MATCH_OR_FAIL(&other_list, "", buf);
AST_LIST_TRAVERSE_SAFE_BEGIN(&test_list, bogus, list) {
AST_LIST_REMOVE_CURRENT(list);
}
AST_LIST_TRAVERSE_SAFE_END;
if (!AST_LIST_EMPTY(&test_list)) {
ast_test_status_update(test, "List should be empty after traversing and removal. It wasn't.\n");
return AST_TEST_FAIL;
}
/* ** */
AST_LIST_INSERT_HEAD(&test_list, &a, list);
MATCH_OR_FAIL(&test_list, "A", buf);
AST_LIST_INSERT_TAIL(&test_list, &d, list);
MATCH_OR_FAIL(&test_list, "AD", buf);
AST_LIST_TRAVERSE_SAFE_BEGIN(&test_list, bogus, list) {
if (bogus == &d) {
AST_LIST_INSERT_BEFORE_CURRENT(&b, list);
MATCH_OR_FAIL(&test_list, "ABD", buf);
AST_LIST_INSERT_BEFORE_CURRENT(&c, list);
MATCH_OR_FAIL(&test_list, "ABCD", buf);
AST_LIST_REMOVE_CURRENT(list);
MATCH_OR_FAIL(&test_list, "ABC", buf);
}
}
AST_LIST_TRAVERSE_SAFE_END;
MATCH_OR_FAIL(&test_list, "ABC", buf);
AST_LIST_TRAVERSE_SAFE_BEGIN(&test_list, bogus, list) {
AST_LIST_REMOVE_CURRENT(list);
}
AST_LIST_TRAVERSE_SAFE_END;
if (!AST_LIST_EMPTY(&test_list)) {
ast_test_status_update(test, "List should be empty after traversing and removal. It wasn't.\n");
return AST_TEST_FAIL;
}
return AST_TEST_PASS;
}
static int unload_module(void)
{
AST_TEST_UNREGISTER(ll_tests);
AST_TEST_UNREGISTER(single_ll_tests);
return 0;
}
static int load_module(void)
{
AST_TEST_REGISTER(ll_tests);
AST_TEST_REGISTER(single_ll_tests);
return AST_MODULE_LOAD_SUCCESS;
}

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