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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:00:34 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:00:34 +0000
commit3f619478f796eddbba6e39502fe941b285dd97b1 (patch)
treee2c7b5777f728320e5b5542b6213fd3591ba51e2 /libmariadb/include/ma_hashtbl.h
parentInitial commit. (diff)
downloadmariadb-3f619478f796eddbba6e39502fe941b285dd97b1.tar.xz
mariadb-3f619478f796eddbba6e39502fe941b285dd97b1.zip
Adding upstream version 1:10.11.6.upstream/1%10.11.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libmariadb/include/ma_hashtbl.h')
-rw-r--r--libmariadb/include/ma_hashtbl.h70
1 files changed, 70 insertions, 0 deletions
diff --git a/libmariadb/include/ma_hashtbl.h b/libmariadb/include/ma_hashtbl.h
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+/************************************************************************************
+ Copyright (C) 2000, 2012 MySQL AB & MySQL Finland AB & TCX DataKonsult AB,
+ Monty Program AB
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with this library; if not see <http://www.gnu.org/licenses>
+ or write to the Free Software Foundation, Inc.,
+ 51 Franklin St., Fifth Floor, Boston, MA 02110, USA
+
+ Part of this code includes code from the PHP project which
+ is freely available from http://www.php.net
+*************************************************************************************/
+
+#ifndef _ma_hashtbl_h
+#define _ma_hashtbl_h
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef uchar *(*hash_get_key)(const uchar *,uint*,my_bool);
+typedef void (*hash_free_key)(void *);
+
+ /* flags for hash_init */
+#define MA_HASHTBL_CASE_INSENSITIVE 1
+
+typedef struct st_hash_info {
+ uint next; /* index to next key */
+ uchar *data; /* data for current entry */
+} MA_HASHTBL_LINK;
+
+typedef struct st_hash {
+ uint key_offset,key_length; /* Length of key if const length */
+ uint records,blength,current_record;
+ uint flags;
+ DYNAMIC_ARRAY array; /* Place for hash_keys */
+ hash_get_key get_key;
+ void (*free)(void *);
+ uint (*calc_hashnr)(const uchar *key,uint length);
+} MA_HASHTBL;
+
+#define ma_hashtbl_init(A,B,C,D,E,F,G) _ma_hashtbl_init(A,B,C,D,E,F,G CALLER_INFO)
+my_bool _ma_hashtbl_init(MA_HASHTBL *hash,uint default_array_elements, uint key_offset,
+ uint key_length, hash_get_key get_key,
+ void (*free_element)(void*), uint flags CALLER_INFO_PROTO);
+void ma_hashtbl_free(MA_HASHTBL *tree);
+uchar *ma_hashtbl_element(MA_HASHTBL *hash,uint idx);
+void * ma_hashtbl_search(MA_HASHTBL *info,const uchar *key,uint length);
+void * ma_hashtbl_next(MA_HASHTBL *info,const uchar *key,uint length);
+my_bool ma_hashtbl_insert(MA_HASHTBL *info,const uchar *data);
+my_bool ma_hashtbl_delete(MA_HASHTBL *hash,uchar *record);
+my_bool ma_hashtbl_update(MA_HASHTBL *hash,uchar *record,uchar *old_key,uint old_key_length);
+my_bool ma_hashtbl_check(MA_HASHTBL *hash); /* Only in debug library */
+
+#define ma_hashtbl_clear(H) memset((char*) (H), 0,sizeof(*(H)))
+#define ma_hashtbl_inited(H) ((H)->array.buffer != 0)
+
+#ifdef __cplusplus
+}
+#endif
+#endif