added thread safe hashtable which allows concurrent

reads but only exclusive writes

1 files changed, 115 insertions, 0 deletions

diff --git a/Zend/zend_ts_hash.h b/Zend/zend_ts_hash.h
new file mode 100644
index 0000000000..51472297df
--- /dev/null
+++ b/Zend/zend_ts_hash.h
@@ -0,0 +1,115 @@
+/*
+   +----------------------------------------------------------------------+
+   | Zend Engine                                                          |
+   +----------------------------------------------------------------------+
+   | Copyright (c) 1998-2002 Zend Technologies Ltd. (http://www.zend.com) |
+   +----------------------------------------------------------------------+
+   | This source file is subject to version 2.00 of the Zend license,     |
+   | that is bundled with this package in the file LICENSE, and is        | 
+   | available at through the world-wide-web at                           |
+   | http://www.zend.com/license/2_00.txt.                                |
+   | If you did not receive a copy of the Zend license and are unable to  |
+   | obtain it through the world-wide-web, please send a note to          |
+   | license@zend.com so we can mail you a copy immediately.              |
+   +----------------------------------------------------------------------+
+   | Authors: Harald Radi <harald.radi@nme.at>                            |
+   +----------------------------------------------------------------------+
+*/
+
+#ifndef ZEND_TS_HASH_H
+#define ZEND_TS_HASH_H
+
+#include "zend.h"
+
+typedef struct _zend_ts_hashtable {
+	HashTable hash;
+	zend_uint reader;
+	MUTEX_T mx_reader;
+	MUTEX_T mx_writer;
+} TsHashTable;
+
+BEGIN_EXTERN_C()
+
+/* startup/shutdown */
+ZEND_API int zend_ts_hash_init(TsHashTable *ht, uint nSize, hash_func_t pHashFunction, dtor_func_t pDestructor, int persistent);
+ZEND_API int zend_ts_hash_init_ex(TsHashTable *ht, uint nSize, hash_func_t pHashFunction, dtor_func_t pDestructor, int persistent, zend_bool bApplyProtection);
+ZEND_API void zend_ts_hash_destroy(TsHashTable *ht);
+ZEND_API void zend_ts_hash_clean(TsHashTable *ht);
+
+/* additions/updates/changes */
+ZEND_API int zend_ts_hash_add_or_update(TsHashTable *ht, char *arKey, uint nKeyLength, void *pData, uint nDataSize, void **pDest, int flag);
+#define zend_ts_hash_update(ht, arKey, nKeyLength, pData, nDataSize, pDest) \
+		zend_ts_hash_add_or_update(ht, arKey, nKeyLength, pData, nDataSize, pDest, HASH_UPDATE)
+#define zend_ts_hash_add(ht, arKey, nKeyLength, pData, nDataSize, pDest) \
+		zend_ts_hash_add_or_update(ht, arKey, nKeyLength, pData, nDataSize, pDest, HASH_ADD)
+
+ZEND_API int zend_ts_hash_quick_add_or_update(TsHashTable *ht, char *arKey, uint nKeyLength, ulong h, void *pData, uint nDataSize, void **pDest, int flag);
+#define zend_ts_hash_quick_update(ht, arKey, nKeyLength, h, pData, nDataSize, pDest) \
+		zend_ts_hash_quick_add_or_update(ht, arKey, nKeyLength, h, pData, nDataSize, pDest, HASH_UPDATE)
+#define zend_ts_hash_quick_add(ht, arKey, nKeyLength, h, pData, nDataSize, pDest) \
+		zend_ts_hash_quick_add_or_update(ht, arKey, nKeyLength, h, pData, nDataSize, pDest, HASH_ADD)
+
+ZEND_API int zend_ts_hash_index_update_or_next_insert(TsHashTable *ht, ulong h, void *pData, uint nDataSize, void **pDest, int flag);
+#define zend_ts_hash_index_update(ht, h, pData, nDataSize, pDest) \
+		zend_ts_hash_index_update_or_next_insert(ht, h, pData, nDataSize, pDest, HASH_UPDATE)
+#define zend_ts_hash_next_index_insert(ht, pData, nDataSize, pDest) \
+		zend_ts_hash_index_update_or_next_insert(ht, 0, pData, nDataSize, pDest, HASH_NEXT_INSERT)
+
+ZEND_API int zend_ts_hash_add_empty_element(TsHashTable *ht, char *arKey, uint nKeyLength);
+
+ZEND_API void zend_ts_hash_graceful_destroy(TsHashTable *ht);
+ZEND_API void zend_ts_hash_apply(TsHashTable *ht, apply_func_t apply_func TSRMLS_DC);
+ZEND_API void zend_ts_hash_apply_with_argument(TsHashTable *ht, apply_func_arg_t apply_func, void * TSRMLS_DC);
+ZEND_API void zend_ts_hash_apply_with_arguments(TsHashTable *ht, apply_func_args_t apply_func, int, ...);
+
+ZEND_API void zend_ts_hash_reverse_apply(TsHashTable *ht, apply_func_t apply_func TSRMLS_DC);
+
+
+/* Deletes */
+ZEND_API int zend_ts_hash_del_key_or_index(TsHashTable *ht, char *arKey, uint nKeyLength, ulong h, int flag);
+#define zend_ts_hash_del(ht, arKey, nKeyLength) \
+		zend_ts_hash_del_key_or_index(ht, arKey, nKeyLength, 0, HASH_DEL_KEY)
+#define zend_ts_hash_index_del(ht, h) \
+		zend_ts_hash_del_key_or_index(ht, NULL, 0, h, HASH_DEL_INDEX)
+
+ZEND_API ulong zend_ts_get_hash_value(TsHashTable *ht, char *arKey, uint nKeyLength);
+
+/* Data retreival */
+ZEND_API int zend_ts_hash_find(TsHashTable *ht, char *arKey, uint nKeyLength, void **pData);
+ZEND_API int zend_ts_hash_quick_find(TsHashTable *ht, char *arKey, uint nKeyLength, ulong h, void **pData);
+ZEND_API int zend_ts_hash_index_find(TsHashTable *ht, ulong h, void **pData);
+
+/* Misc */
+ZEND_API int zend_ts_hash_exists(TsHashTable *ht, char *arKey, uint nKeyLength);
+ZEND_API int zend_ts_hash_index_exists(TsHashTable *ht, ulong h);
+
+/* Copying, merging and sorting */
+ZEND_API void zend_ts_hash_copy(TsHashTable *target, TsHashTable *source, copy_ctor_func_t pCopyConstructor, void *tmp, uint size);
+ZEND_API void zend_ts_hash_merge(TsHashTable *target, TsHashTable *source, copy_ctor_func_t pCopyConstructor, void *tmp, uint size, int overwrite);
+ZEND_API void zend_ts_hash_merge_ex(TsHashTable *target, TsHashTable *source, copy_ctor_func_t pCopyConstructor, uint size, zend_bool (*pReplaceOrig)(void *orig, void *p_new));
+ZEND_API int zend_ts_hash_sort(TsHashTable *ht, sort_func_t sort_func, compare_func_t compare_func, int renumber TSRMLS_DC);
+ZEND_API int zend_ts_hash_compare(TsHashTable *ht1, TsHashTable *ht2, compare_func_t compar, zend_bool ordered TSRMLS_DC);
+ZEND_API int zend_ts_hash_minmax(TsHashTable *ht, compare_func_t compar, int flag, void **pData TSRMLS_DC);
+
+ZEND_API int zend_ts_hash_num_elements(TsHashTable *ht);
+
+ZEND_API int zend_ts_hash_rehash(TsHashTable *ht);
+
+ZEND_API ulong zend_ts_hash_func(char *arKey, uint nKeyLength);
+
+#if ZEND_DEBUG
+/* debug */
+void zend_ts_hash_display_pListTail(TsHashTable *ht);
+void zend_ts_hash_display(TsHashTable *ht);
+#endif
+
+END_EXTERN_C()
+
+#define ZEND_TS_INIT_SYMTABLE(ht)								\
+	ZEND_TS_INIT_SYMTABLE_EX(ht, 2, 0)
+
+#define ZEND_TS_INIT_SYMTABLE_EX(ht, n, persistent)			\
+	zend_ts_hash_init(ht, n, NULL, ZVAL_PTR_DTOR, persistent)
+
+
+#endif							/* ZEND_HASH_H */