Delete bundled copy of NSS and replace with README.

nss/lib/base/list.c

Index: nss/lib/base/list.c
diff --git a/nss/lib/base/list.c b/nss/lib/base/list.c
deleted file mode 100644
index 0173b853b2bfc7979817f0bbaa25464e41c4e3a6..0000000000000000000000000000000000000000
--- a/nss/lib/base/list.c
+++ /dev/null
@@ -1,400 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/*
- * list.c
- *
- * This contains the implementation of NSS's thread-safe linked list.
- */
-
-#ifndef BASE_H
-#include "base.h"
-#endif /* BASE_H */
-
-struct nssListElementStr {
-    PRCList link;
-    void *data;
-};
-
-typedef struct nssListElementStr nssListElement;
-
-struct nssListStr {
-    NSSArena *arena;
-    PZLock *lock;
-    nssListElement *head;
-    PRUint32 count;
-    nssListCompareFunc compareFunc;
-    nssListSortFunc sortFunc;
-    PRBool i_alloced_arena;
-};
-
-struct nssListIteratorStr {
-    PZLock *lock;
-    nssList *list;
-    nssListElement *current;
-};
-
-#define NSSLIST_LOCK_IF(list)                                                  \
-    if ((list)->lock)                                                          \
-    PZ_Lock((list)->lock)
-
-#define NSSLIST_UNLOCK_IF(list)                                                \
-    if ((list)->lock)                                                          \
-    PZ_Unlock((list)->lock)
-
-static PRBool
-pointer_compare(void *a, void *b)
-{
-    return (PRBool)(a == b);
-}
-
-static nssListElement *
-nsslist_get_matching_element(nssList *list, void *data)
-{
-    PRCList *link;
-    nssListElement *node;
-    node = list->head;
-    if (!node) {
-        return NULL;
-    }
-    link = &node->link;
-    while (node) {
-        /* using a callback slows things down when it's just compare ... */
-        if (list->compareFunc(node->data, data)) {
-            break;
-        }
-        link = &node->link;
-        if (link == PR_LIST_TAIL(&list->head->link)) {
-            node = NULL;
-            break;
-        }
-        node = (nssListElement *)PR_NEXT_LINK(&node->link);
-    }
-    return node;
-}
-
-NSS_IMPLEMENT nssList *
-nssList_Create(NSSArena *arenaOpt, PRBool threadSafe)
-{
-    NSSArena *arena;
-    nssList *list;
-    PRBool i_alloced;
-    if (arenaOpt) {
-        arena = arenaOpt;
-        i_alloced = PR_FALSE;
-    } else {
-        arena = nssArena_Create();
-        i_alloced = PR_TRUE;
-    }
-    if (!arena) {
-        return (nssList *)NULL;
-    }
-    list = nss_ZNEW(arena, nssList);
-    if (!list) {
-        if (!arenaOpt) {
-            NSSArena_Destroy(arena);
-        }
-        return (nssList *)NULL;
-    }
-    if (threadSafe) {
-        list->lock = PZ_NewLock(nssILockOther);
-        if (!list->lock) {
-            if (arenaOpt) {
-                nss_ZFreeIf(list);
-            } else {
-                NSSArena_Destroy(arena);
-            }
-            return (nssList *)NULL;
-        }
-    }
-    list->arena = arena;
-    list->i_alloced_arena = i_alloced;
-    list->compareFunc = pointer_compare;
-    return list;
-}
-
-NSS_IMPLEMENT PRStatus
-nssList_Destroy(nssList *list)
-{
-    if (!list->i_alloced_arena) {
-        nssList_Clear(list, NULL);
-    }
-    if (list->lock) {
-        (void)PZ_DestroyLock(list->lock);
-    }
-    if (list->i_alloced_arena) {
-        NSSArena_Destroy(list->arena);
-        list = NULL;
-    }
-    nss_ZFreeIf(list);
-    return PR_SUCCESS;
-}
-
-NSS_IMPLEMENT void
-nssList_SetCompareFunction(nssList *list, nssListCompareFunc compareFunc)
-{
-    list->compareFunc = compareFunc;
-}
-
-NSS_IMPLEMENT void
-nssList_SetSortFunction(nssList *list, nssListSortFunc sortFunc)
-{
-    /* XXX if list already has elements, sort them */
-    list->sortFunc = sortFunc;
-}
-
-NSS_IMPLEMENT nssListCompareFunc
-nssList_GetCompareFunction(nssList *list)
-{
-    return list->compareFunc;
-}
-
-NSS_IMPLEMENT void
-nssList_Clear(nssList *list, nssListElementDestructorFunc destructor)
-{
-    PRCList *link;
-    nssListElement *node, *tmp;
-    NSSLIST_LOCK_IF(list);
-    node = list->head;
-    list->head = NULL;
-    while (node && list->count > 0) {
-        if (destructor)
-            (*destructor)(node->data);
-        link = &node->link;
-        tmp = (nssListElement *)PR_NEXT_LINK(link);
-        PR_REMOVE_LINK(link);
-        nss_ZFreeIf(node);
-        node = tmp;
-        --list->count;
-    }
-    NSSLIST_UNLOCK_IF(list);
-}
-
-static PRStatus
-nsslist_add_element(nssList *list, void *data)
-{
-    nssListElement *node = nss_ZNEW(list->arena, nssListElement);
-    if (!node) {
-        return PR_FAILURE;
-    }
-    PR_INIT_CLIST(&node->link);
-    node->data = data;
-    if (list->head) {
-        if (list->sortFunc) {
-            PRCList *link;
-            nssListElement *currNode;
-            currNode = list->head;
-            /* insert in ordered list */
-            while (currNode) {
-                link = &currNode->link;
-                if (list->sortFunc(data, currNode->data) <= 0) {
-                    /* new element goes before current node */
-                    PR_INSERT_BEFORE(&node->link, link);
-                    /* reset head if this is first */
-                    if (currNode == list->head)
-                        list->head = node;
-                    break;
-                }
-                if (link == PR_LIST_TAIL(&list->head->link)) {
-                    /* reached end of list, append */
-                    PR_INSERT_AFTER(&node->link, link);
-                    break;
-                }
-                currNode = (nssListElement *)PR_NEXT_LINK(&currNode->link);
-            }
-        } else {
-            /* not sorting */
-            PR_APPEND_LINK(&node->link, &list->head->link);
-        }
-    } else {
-        list->head = node;
-    }
-    ++list->count;
-    return PR_SUCCESS;
-}
-
-NSS_IMPLEMENT PRStatus
-nssList_Add(nssList *list, void *data)
-{
-    NSSLIST_LOCK_IF(list);
-    (void)nsslist_add_element(list, data);
-    NSSLIST_UNLOCK_IF(list);
-    return PR_SUCCESS;
-}
-
-NSS_IMPLEMENT PRStatus
-nssList_AddUnique(nssList *list, void *data)
-{
-    PRStatus nssrv;
-    nssListElement *node;
-    NSSLIST_LOCK_IF(list);
-    node = nsslist_get_matching_element(list, data);
-    if (node) {
-        /* already in, finish */
-        NSSLIST_UNLOCK_IF(list);
-        return PR_SUCCESS;
-    }
-    nssrv = nsslist_add_element(list, data);
-    NSSLIST_UNLOCK_IF(list);
-    return nssrv;
-}
-
-NSS_IMPLEMENT PRStatus
-nssList_Remove(nssList *list, void *data)
-{
-    nssListElement *node;
-    NSSLIST_LOCK_IF(list);
-    node = nsslist_get_matching_element(list, data);
-    if (node) {
-        if (node == list->head) {
-            list->head = (nssListElement *)PR_NEXT_LINK(&node->link);
-        }
-        PR_REMOVE_LINK(&node->link);
-        nss_ZFreeIf(node);
-        if (--list->count == 0) {
-            list->head = NULL;
-        }
-    }
-    NSSLIST_UNLOCK_IF(list);
-    return PR_SUCCESS;
-}
-
-NSS_IMPLEMENT void *
-nssList_Get(nssList *list, void *data)
-{
-    nssListElement *node;
-    NSSLIST_LOCK_IF(list);
-    node = nsslist_get_matching_element(list, data);
-    NSSLIST_UNLOCK_IF(list);
-    return (node) ? node->data : NULL;
-}
-
-NSS_IMPLEMENT PRUint32
-nssList_Count(nssList *list)
-{
-    return list->count;
-}
-
-NSS_IMPLEMENT PRStatus
-nssList_GetArray(nssList *list, void **rvArray, PRUint32 maxElements)
-{
-    nssListElement *node;
-    PRUint32 i = 0;
-    PR_ASSERT(maxElements > 0);
-    node = list->head;
-    if (!node) {
-        return PR_SUCCESS;
-    }
-    NSSLIST_LOCK_IF(list);
-    while (node) {
-        rvArray[i++] = node->data;
-        if (i == maxElements)
-            break;
-        node = (nssListElement *)PR_NEXT_LINK(&node->link);
-        if (node == list->head) {
-            break;
-        }
-    }
-    NSSLIST_UNLOCK_IF(list);
-    return PR_SUCCESS;
-}
-
-NSS_IMPLEMENT nssList *
-nssList_Clone(nssList *list)
-{
-    nssList *rvList;
-    nssListElement *node;
-    rvList = nssList_Create(NULL, (list->lock != NULL));
-    if (!rvList) {
-        return NULL;
-    }
-    NSSLIST_LOCK_IF(list);
-    if (list->count > 0) {
-        node = list->head;
-        while (PR_TRUE) {
-            nssList_Add(rvList, node->data);
-            node = (nssListElement *)PR_NEXT_LINK(&node->link);
-            if (node == list->head) {
-                break;
-            }
-        }
-    }
-    NSSLIST_UNLOCK_IF(list);
-    return rvList;
-}
-
-NSS_IMPLEMENT nssListIterator *
-nssList_CreateIterator(nssList *list)
-{
-    nssListIterator *rvIterator;
-    rvIterator = nss_ZNEW(NULL, nssListIterator);
-    if (!rvIterator) {
-        return NULL;
-    }
-    rvIterator->list = nssList_Clone(list);
-    if (!rvIterator->list) {
-        nss_ZFreeIf(rvIterator);
-        return NULL;
-    }
-    rvIterator->current = rvIterator->list->head;
-    if (list->lock) {
-        rvIterator->lock = PZ_NewLock(nssILockOther);
-        if (!rvIterator->lock) {
-            nssList_Destroy(rvIterator->list);
-            nss_ZFreeIf(rvIterator);
-            rvIterator = NULL;
-        }
-    }
-    return rvIterator;
-}
-
-NSS_IMPLEMENT void
-nssListIterator_Destroy(nssListIterator *iter)
-{
-    if (iter->lock) {
-        (void)PZ_DestroyLock(iter->lock);
-    }
-    nssList_Destroy(iter->list);
-    nss_ZFreeIf(iter);
-}
-
-NSS_IMPLEMENT void *
-nssListIterator_Start(nssListIterator *iter)
-{
-    NSSLIST_LOCK_IF(iter);
-    if (iter->list->count == 0) {
-        return NULL;
-    }
-    iter->current = iter->list->head;
-    return iter->current->data;
-}
-
-NSS_IMPLEMENT void *
-nssListIterator_Next(nssListIterator *iter)
-{
-    nssListElement *node;
-    PRCList *link;
-    if (iter->list->count == 1 || iter->current == NULL) {
-        /* Reached the end of the list.  Don't change the state, force to
-         * user to call nssList_Finish to clean up.
-         */
-        return NULL;
-    }
-    node = (nssListElement *)PR_NEXT_LINK(&iter->current->link);
-    link = &node->link;
-    if (link == PR_LIST_TAIL(&iter->list->head->link)) {
-        /* Signal the end of the list. */
-        iter->current = NULL;
-        return node->data;
-    }
-    iter->current = node;
-    return node->data;
-}
-
-NSS_IMPLEMENT PRStatus
-nssListIterator_Finish(nssListIterator *iter)
-{
-    iter->current = iter->list->head;
-    return (iter->lock) ? PZ_Unlock(iter->lock) : PR_SUCCESS;
-}