Delete bundled copy of NSS and replace with README.

nss/lib/base/hash.c

Index: nss/lib/base/hash.c
diff --git a/nss/lib/base/hash.c b/nss/lib/base/hash.c
deleted file mode 100644
index f9ee758038ec4a5ce62a320372f295a70b793a99..0000000000000000000000000000000000000000
--- a/nss/lib/base/hash.c
+++ /dev/null
@@ -1,314 +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/. */
-
-/*
- * hash.c
- *
- * This is merely a couple wrappers around NSPR's PLHashTable, using
- * the identity hash and arena-aware allocators.
- * This is a copy of ckfw/hash.c, with modifications to use NSS types
- * (not Cryptoki types).  Would like for this to be a single implementation,
- * but doesn't seem like it will work.
- */
-
-#ifndef BASE_H
-#include "base.h"
-#endif /* BASE_H */
-
-#include "prbit.h"
-
-/*
- * nssHash
- *
- *  nssHash_Create
- *  nssHash_Destroy
- *  nssHash_Add
- *  nssHash_Remove
- *  nssHash_Count
- *  nssHash_Exists
- *  nssHash_Lookup
- *  nssHash_Iterate
- */
-
-struct nssHashStr {
-    NSSArena *arena;
-    PRBool i_alloced_arena;
-    PRLock *mutex;
-
-    /*
-     * The invariant that mutex protects is:
-     *   The count accurately reflects the hashtable state.
-     */
-
-    PLHashTable *plHashTable;
-    PRUint32 count;
-};
-
-static PLHashNumber
-nss_identity_hash(const void *key)
-{
-    return (PLHashNumber)((char *)key - (char *)NULL);
-}
-
-static PLHashNumber
-nss_item_hash(const void *key)
-{
-    unsigned int i;
-    PLHashNumber h;
-    NSSItem *it = (NSSItem *)key;
-    h = 0;
-    for (i = 0; i < it->size; i++)
-        h = PR_ROTATE_LEFT32(h, 4) ^ ((unsigned char *)it->data)[i];
-    return h;
-}
-
-static int
-nss_compare_items(const void *v1, const void *v2)
-{
-    PRStatus ignore;
-    return (int)nssItem_Equal((NSSItem *)v1, (NSSItem *)v2, &ignore);
-}
-
-/*
- * nssHash_create
- *
- */
-NSS_IMPLEMENT nssHash *
-nssHash_Create(NSSArena *arenaOpt, PRUint32 numBuckets, PLHashFunction keyHash,
-               PLHashComparator keyCompare, PLHashComparator valueCompare)
-{
-    nssHash *rv;
-    NSSArena *arena;
-    PRBool i_alloced;
-
-#ifdef NSSDEBUG
-    if (arenaOpt && PR_SUCCESS != nssArena_verifyPointer(arenaOpt)) {
-        nss_SetError(NSS_ERROR_INVALID_POINTER);
-        return (nssHash *)NULL;
-    }
-#endif /* NSSDEBUG */
-
-    if (arenaOpt) {
-        arena = arenaOpt;
-        i_alloced = PR_FALSE;
-    } else {
-        arena = nssArena_Create();
-        i_alloced = PR_TRUE;
-    }
-
-    rv = nss_ZNEW(arena, nssHash);
-    if ((nssHash *)NULL == rv) {
-        goto loser;
-    }
-
-    rv->mutex = PZ_NewLock(nssILockOther);
-    if ((PZLock *)NULL == rv->mutex) {
-        goto loser;
-    }
-
-    rv->plHashTable =
-        PL_NewHashTable(numBuckets, keyHash, keyCompare, valueCompare,
-                        &nssArenaHashAllocOps, arena);
-    if ((PLHashTable *)NULL == rv->plHashTable) {
-        (void)PZ_DestroyLock(rv->mutex);
-        goto loser;
-    }
-
-    rv->count = 0;
-    rv->arena = arena;
-    rv->i_alloced_arena = i_alloced;
-
-    return rv;
-loser:
-    (void)nss_ZFreeIf(rv);
-    return (nssHash *)NULL;
-}
-
-/*
- * nssHash_CreatePointer
- *
- */
-NSS_IMPLEMENT nssHash *
-nssHash_CreatePointer(NSSArena *arenaOpt, PRUint32 numBuckets)
-{
-    return nssHash_Create(arenaOpt, numBuckets, nss_identity_hash,
-                          PL_CompareValues, PL_CompareValues);
-}
-
-/*
- * nssHash_CreateString
- *
- */
-NSS_IMPLEMENT nssHash *
-nssHash_CreateString(NSSArena *arenaOpt, PRUint32 numBuckets)
-{
-    return nssHash_Create(arenaOpt, numBuckets, PL_HashString,
-                          PL_CompareStrings, PL_CompareStrings);
-}
-
-/*
- * nssHash_CreateItem
- *
- */
-NSS_IMPLEMENT nssHash *
-nssHash_CreateItem(NSSArena *arenaOpt, PRUint32 numBuckets)
-{
-    return nssHash_Create(arenaOpt, numBuckets, nss_item_hash,
-                          nss_compare_items, PL_CompareValues);
-}
-
-/*
- * nssHash_Destroy
- *
- */
-NSS_IMPLEMENT void
-nssHash_Destroy(nssHash *hash)
-{
-    (void)PZ_DestroyLock(hash->mutex);
-    PL_HashTableDestroy(hash->plHashTable);
-    if (hash->i_alloced_arena) {
-        nssArena_Destroy(hash->arena);
-    } else {
-        nss_ZFreeIf(hash);
-    }
-}
-
-/*
- * nssHash_Add
- *
- */
-NSS_IMPLEMENT PRStatus
-nssHash_Add(nssHash *hash, const void *key, const void *value)
-{
-    PRStatus error = PR_FAILURE;
-    PLHashEntry *he;
-
-    PZ_Lock(hash->mutex);
-
-    he = PL_HashTableAdd(hash->plHashTable, key, (void *)value);
-    if ((PLHashEntry *)NULL == he) {
-        nss_SetError(NSS_ERROR_NO_MEMORY);
-    } else if (he->value != value) {
-        nss_SetError(NSS_ERROR_HASH_COLLISION);
-    } else {
-        hash->count++;
-        error = PR_SUCCESS;
-    }
-
-    (void)PZ_Unlock(hash->mutex);
-
-    return error;
-}
-
-/*
- * nssHash_Remove
- *
- */
-NSS_IMPLEMENT void
-nssHash_Remove(nssHash *hash, const void *it)
-{
-    PRBool found;
-
-    PZ_Lock(hash->mutex);
-
-    found = PL_HashTableRemove(hash->plHashTable, it);
-    if (found) {
-        hash->count--;
-    }
-
-    (void)PZ_Unlock(hash->mutex);
-    return;
-}
-
-/*
- * nssHash_Count
- *
- */
-NSS_IMPLEMENT PRUint32
-nssHash_Count(nssHash *hash)
-{
-    PRUint32 count;
-
-    PZ_Lock(hash->mutex);
-
-    count = hash->count;
-
-    (void)PZ_Unlock(hash->mutex);
-
-    return count;
-}
-
-/*
- * nssHash_Exists
- *
- */
-NSS_IMPLEMENT PRBool
-nssHash_Exists(nssHash *hash, const void *it)
-{
-    void *value;
-
-    PZ_Lock(hash->mutex);
-
-    value = PL_HashTableLookup(hash->plHashTable, it);
-
-    (void)PZ_Unlock(hash->mutex);
-
-    if ((void *)NULL == value) {
-        return PR_FALSE;
-    } else {
-        return PR_TRUE;
-    }
-}
-
-/*
- * nssHash_Lookup
- *
- */
-NSS_IMPLEMENT void *
-nssHash_Lookup(nssHash *hash, const void *it)
-{
-    void *rv;
-
-    PZ_Lock(hash->mutex);
-
-    rv = PL_HashTableLookup(hash->plHashTable, it);
-
-    (void)PZ_Unlock(hash->mutex);
-
-    return rv;
-}
-
-struct arg_str {
-    nssHashIterator fcn;
-    void *closure;
-};
-
-static PRIntn
-nss_hash_enumerator(PLHashEntry *he, PRIntn index, void *arg)
-{
-    struct arg_str *as = (struct arg_str *)arg;
-    as->fcn(he->key, he->value, as->closure);
-    return HT_ENUMERATE_NEXT;
-}
-
-/*
- * nssHash_Iterate
- *
- * NOTE that the iteration function will be called with the hashtable locked.
- */
-NSS_IMPLEMENT void
-nssHash_Iterate(nssHash *hash, nssHashIterator fcn, void *closure)
-{
-    struct arg_str as;
-    as.fcn = fcn;
-    as.closure = closure;
-
-    PZ_Lock(hash->mutex);
-
-    PL_HashTableEnumerateEntries(hash->plHashTable, nss_hash_enumerator, &as);
-
-    (void)PZ_Unlock(hash->mutex);
-
-    return;
-}