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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:18:56 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:18:56 +0000
commitb7c15c31519dc44c1f691e0466badd556ffe9423 (patch)
treef944572f288bab482a615e09af627d9a2b6727d8 /src/util/binhash.h
parentInitial commit. (diff)
downloadpostfix-b7c15c31519dc44c1f691e0466badd556ffe9423.tar.xz
postfix-b7c15c31519dc44c1f691e0466badd556ffe9423.zip
Adding upstream version 3.7.10.upstream/3.7.10upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/util/binhash.h')
-rw-r--r--src/util/binhash.h65
1 files changed, 65 insertions, 0 deletions
diff --git a/src/util/binhash.h b/src/util/binhash.h
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+#ifndef _BINHASH_H_INCLUDED_
+#define _BINHASH_H_INCLUDED_
+
+/*++
+/* NAME
+/* binhash 3h
+/* SUMMARY
+/* hash table manager
+/* SYNOPSIS
+/* #include <binhash.h>
+/* DESCRIPTION
+/* .nf
+
+ /* Structure of one hash table entry. */
+
+typedef struct BINHASH_INFO {
+ void *key; /* lookup key */
+ ssize_t key_len; /* key length */
+ void *value; /* associated value */
+ struct BINHASH_INFO *next; /* colliding entry */
+ struct BINHASH_INFO *prev; /* colliding entry */
+} BINHASH_INFO;
+
+ /* Structure of one hash table. */
+
+typedef struct BINHASH {
+ ssize_t size; /* length of entries array */
+ ssize_t used; /* number of entries in table */
+ BINHASH_INFO **data; /* entries array, auto-resized */
+ BINHASH_INFO **seq_bucket; /* current sequence hash bucket */
+ BINHASH_INFO **seq_element; /* current sequence element */
+} BINHASH;
+
+extern BINHASH *binhash_create(ssize_t);
+extern BINHASH_INFO *binhash_enter(BINHASH *, const void *, ssize_t, void *);
+extern BINHASH_INFO *binhash_locate(BINHASH *, const void *, ssize_t);
+extern void *binhash_find(BINHASH *, const void *, ssize_t);
+extern void binhash_delete(BINHASH *, const void *, ssize_t, void (*) (void *));
+extern void binhash_free(BINHASH *, void (*) (void *));
+extern void binhash_walk(BINHASH *, void (*) (BINHASH_INFO *, void *), void *);
+extern BINHASH_INFO **binhash_list(BINHASH *);
+extern BINHASH_INFO *binhash_sequence(BINHASH *, int);
+
+#define BINHASH_SEQ_FIRST 0
+#define BINHASH_SEQ_NEXT 1
+#define BINHASH_SEQ_STOP (-1)
+
+/* LICENSE
+/* .ad
+/* .fi
+/* The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/* Wietse Venema
+/* IBM T.J. Watson Research
+/* P.O. Box 704
+/* Yorktown Heights, NY 10598, USA
+/* CREATION DATE
+/* Thu Feb 20 16:54:29 EST 1997
+/* LAST MODIFICATION
+/* %E% %U%
+/* VERSION/RELEASE
+/* %I%
+/*--*/
+
+#endif