| Index: mozilla/nsprpub/lib/ds/plhash.h
|
| ===================================================================
|
| --- mozilla/nsprpub/lib/ds/plhash.h (revision 191424)
|
| +++ mozilla/nsprpub/lib/ds/plhash.h (working copy)
|
| @@ -1,126 +0,0 @@
|
| -/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
| -/* 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/. */
|
| -
|
| -#ifndef plhash_h___
|
| -#define plhash_h___
|
| -/*
|
| - * API to portable hash table code.
|
| - */
|
| -#include <stdio.h>
|
| -#include "prtypes.h"
|
| -
|
| -PR_BEGIN_EXTERN_C
|
| -
|
| -typedef struct PLHashEntry PLHashEntry;
|
| -typedef struct PLHashTable PLHashTable;
|
| -typedef PRUint32 PLHashNumber;
|
| -#define PL_HASH_BITS 32 /* Number of bits in PLHashNumber */
|
| -typedef PLHashNumber (PR_CALLBACK *PLHashFunction)(const void *key);
|
| -typedef PRIntn (PR_CALLBACK *PLHashComparator)(const void *v1, const void *v2);
|
| -
|
| -typedef PRIntn (PR_CALLBACK *PLHashEnumerator)(PLHashEntry *he, PRIntn i, void *arg);
|
| -
|
| -/* Flag bits in PLHashEnumerator's return value */
|
| -#define HT_ENUMERATE_NEXT 0 /* continue enumerating entries */
|
| -#define HT_ENUMERATE_STOP 1 /* stop enumerating entries */
|
| -#define HT_ENUMERATE_REMOVE 2 /* remove and free the current entry */
|
| -#define HT_ENUMERATE_UNHASH 4 /* just unhash the current entry */
|
| -
|
| -typedef struct PLHashAllocOps {
|
| - void * (PR_CALLBACK *allocTable)(void *pool, PRSize size);
|
| - void (PR_CALLBACK *freeTable)(void *pool, void *item);
|
| - PLHashEntry * (PR_CALLBACK *allocEntry)(void *pool, const void *key);
|
| - void (PR_CALLBACK *freeEntry)(void *pool, PLHashEntry *he, PRUintn flag);
|
| -} PLHashAllocOps;
|
| -
|
| -#define HT_FREE_VALUE 0 /* just free the entry's value */
|
| -#define HT_FREE_ENTRY 1 /* free value and entire entry */
|
| -
|
| -struct PLHashEntry {
|
| - PLHashEntry *next; /* hash chain linkage */
|
| - PLHashNumber keyHash; /* key hash function result */
|
| - const void *key; /* ptr to opaque key */
|
| - void *value; /* ptr to opaque value */
|
| -};
|
| -
|
| -struct PLHashTable {
|
| - PLHashEntry **buckets; /* vector of hash buckets */
|
| - PRUint32 nentries; /* number of entries in table */
|
| - PRUint32 shift; /* multiplicative hash shift */
|
| - PLHashFunction keyHash; /* key hash function */
|
| - PLHashComparator keyCompare; /* key comparison function */
|
| - PLHashComparator valueCompare; /* value comparison function */
|
| - const PLHashAllocOps *allocOps; /* allocation operations */
|
| - void *allocPriv; /* allocation private data */
|
| -#ifdef HASHMETER
|
| - PRUint32 nlookups; /* total number of lookups */
|
| - PRUint32 nsteps; /* number of hash chains traversed */
|
| - PRUint32 ngrows; /* number of table expansions */
|
| - PRUint32 nshrinks; /* number of table contractions */
|
| -#endif
|
| -};
|
| -
|
| -/*
|
| - * Create a new hash table.
|
| - * If allocOps is null, use default allocator ops built on top of malloc().
|
| - */
|
| -PR_EXTERN(PLHashTable *)
|
| -PL_NewHashTable(PRUint32 numBuckets, PLHashFunction keyHash,
|
| - PLHashComparator keyCompare, PLHashComparator valueCompare,
|
| - const PLHashAllocOps *allocOps, void *allocPriv);
|
| -
|
| -PR_EXTERN(void)
|
| -PL_HashTableDestroy(PLHashTable *ht);
|
| -
|
| -/* Higher level access methods */
|
| -PR_EXTERN(PLHashEntry *)
|
| -PL_HashTableAdd(PLHashTable *ht, const void *key, void *value);
|
| -
|
| -PR_EXTERN(PRBool)
|
| -PL_HashTableRemove(PLHashTable *ht, const void *key);
|
| -
|
| -PR_EXTERN(void *)
|
| -PL_HashTableLookup(PLHashTable *ht, const void *key);
|
| -
|
| -PR_EXTERN(void *)
|
| -PL_HashTableLookupConst(PLHashTable *ht, const void *key);
|
| -
|
| -PR_EXTERN(PRIntn)
|
| -PL_HashTableEnumerateEntries(PLHashTable *ht, PLHashEnumerator f, void *arg);
|
| -
|
| -/* General-purpose C string hash function. */
|
| -PR_EXTERN(PLHashNumber)
|
| -PL_HashString(const void *key);
|
| -
|
| -/* Compare strings using strcmp(), return true if equal. */
|
| -PR_EXTERN(PRIntn)
|
| -PL_CompareStrings(const void *v1, const void *v2);
|
| -
|
| -/* Stub function just returns v1 == v2 */
|
| -PR_EXTERN(PRIntn)
|
| -PL_CompareValues(const void *v1, const void *v2);
|
| -
|
| -/* Low level access methods */
|
| -PR_EXTERN(PLHashEntry **)
|
| -PL_HashTableRawLookup(PLHashTable *ht, PLHashNumber keyHash, const void *key);
|
| -
|
| -PR_EXTERN(PLHashEntry **)
|
| -PL_HashTableRawLookupConst(PLHashTable *ht, PLHashNumber keyHash,
|
| - const void *key);
|
| -
|
| -PR_EXTERN(PLHashEntry *)
|
| -PL_HashTableRawAdd(PLHashTable *ht, PLHashEntry **hep, PLHashNumber keyHash,
|
| - const void *key, void *value);
|
| -
|
| -PR_EXTERN(void)
|
| -PL_HashTableRawRemove(PLHashTable *ht, PLHashEntry **hep, PLHashEntry *he);
|
| -
|
| -/* This can be trivially implemented using PL_HashTableEnumerateEntries. */
|
| -PR_EXTERN(PRIntn)
|
| -PL_HashTableDump(PLHashTable *ht, PLHashEnumerator dump, FILE *fp);
|
| -
|
| -PR_END_EXTERN_C
|
| -
|
| -#endif /* plhash_h___ */
|
|
|