晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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/*
   +----------------------------------------------------------------------+
   | Zend Engine                                                          |
   +----------------------------------------------------------------------+
   | Copyright (c) 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 through the world-wide-web at the following url:           |
   | 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;
	uint32_t reader;
#ifdef ZTS
	MUTEX_T mx_reader;
	MUTEX_T mx_writer;
#endif
} TsHashTable;

BEGIN_EXTERN_C()

#define TS_HASH(table) (&(table->hash))

/* startup/shutdown */
ZEND_API void _zend_ts_hash_init(TsHashTable *ht, uint32_t nSize, dtor_func_t pDestructor, zend_bool persistent);
ZEND_API void zend_ts_hash_destroy(TsHashTable *ht);
ZEND_API void zend_ts_hash_clean(TsHashTable *ht);

#define zend_ts_hash_init(ht, nSize, pHashFunction, pDestructor, persistent)	\
	_zend_ts_hash_init(ht, nSize, pDestructor, persistent)
#define zend_ts_hash_init_ex(ht, nSize, pHashFunction, pDestructor, persistent, bApplyProtection)	\
	_zend_ts_hash_init(ht, nSize, pDestructor, persistent)


/* additions/updates/changes */
ZEND_API zval *zend_ts_hash_update(TsHashTable *ht, zend_string *key, zval *pData);
ZEND_API zval *zend_ts_hash_add(TsHashTable *ht, zend_string *key, zval *pData);
ZEND_API zval *zend_ts_hash_index_update(TsHashTable *ht, zend_ulong h, zval *pData);
ZEND_API zval *zend_ts_hash_next_index_insert(TsHashTable *ht, zval *pData);
ZEND_API zval* zend_ts_hash_add_empty_element(TsHashTable *ht, zend_string *key);

ZEND_API void zend_ts_hash_graceful_destroy(TsHashTable *ht);
ZEND_API void zend_ts_hash_apply(TsHashTable *ht, apply_func_t apply_func);
ZEND_API void zend_ts_hash_apply_with_argument(TsHashTable *ht, apply_func_arg_t apply_func, void *);
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);


/* Deletes */
ZEND_API int zend_ts_hash_del(TsHashTable *ht, zend_string *key);
ZEND_API int zend_ts_hash_index_del(TsHashTable *ht, zend_ulong h);

/* Data retrieval */
ZEND_API zval *zend_ts_hash_find(TsHashTable *ht, zend_string *key);
ZEND_API zval *zend_ts_hash_index_find(TsHashTable *ht, zend_ulong);

/* Copying, merging and sorting */
ZEND_API void zend_ts_hash_copy(TsHashTable *target, TsHashTable *source, copy_ctor_func_t pCopyConstructor);
ZEND_API void zend_ts_hash_copy_to_hash(HashTable *target, TsHashTable *source, copy_ctor_func_t pCopyConstructor);
ZEND_API void zend_ts_hash_merge(TsHashTable *target, TsHashTable *source, copy_ctor_func_t pCopyConstructor, int overwrite);
ZEND_API void zend_ts_hash_merge_ex(TsHashTable *target, TsHashTable *source, copy_ctor_func_t pCopyConstructor, merge_checker_func_t pMergeSource, void *pParam);
ZEND_API int zend_ts_hash_sort(TsHashTable *ht, sort_func_t sort_func, compare_func_t compare_func, int renumber);
ZEND_API int zend_ts_hash_compare(TsHashTable *ht1, TsHashTable *ht2, compare_func_t compar, zend_bool ordered);
ZEND_API zval *zend_ts_hash_minmax(TsHashTable *ht, compare_func_t compar, int flag);

ZEND_API int zend_ts_hash_num_elements(TsHashTable *ht);

ZEND_API int zend_ts_hash_rehash(TsHashTable *ht);

#if ZEND_DEBUG
/* debug */
void zend_ts_hash_display_pListTail(TsHashTable *ht);
void zend_ts_hash_display(TsHashTable *ht);
#endif

ZEND_API zval *zend_ts_hash_str_find(TsHashTable *ht, const char *key, size_t len);
ZEND_API zval *zend_ts_hash_str_update(TsHashTable *ht, const char *key, size_t len, zval *pData);
ZEND_API zval *zend_ts_hash_str_add(TsHashTable *ht, const char *key, size_t len, zval *pData);

static zend_always_inline void *zend_ts_hash_str_find_ptr(TsHashTable *ht, const char *str, size_t len)
{
	zval *zv;

	zv = zend_ts_hash_str_find(ht, str, len);
	return zv ? Z_PTR_P(zv) : NULL;
}

static zend_always_inline void *zend_ts_hash_str_update_ptr(TsHashTable *ht, const char *str, size_t len, void *pData)
{
	zval tmp, *zv;

	ZVAL_PTR(&tmp, pData);
	zv = zend_ts_hash_str_update(ht, str, len, &tmp);
	return zv ? Z_PTR_P(zv) : NULL;
}

static zend_always_inline void *zend_ts_hash_str_add_ptr(TsHashTable *ht, const char *str, size_t len, void *pData)
{
	zval tmp, *zv;

	ZVAL_PTR(&tmp, pData);
	zv = zend_ts_hash_str_add(ht, str, len, &tmp);
	return zv ? Z_PTR_P(zv) : NULL;
}

static zend_always_inline int zend_ts_hash_exists(TsHashTable *ht, zend_string *key)
{
	return zend_ts_hash_find(ht, key) != NULL;
}

static zend_always_inline int zend_ts_hash_index_exists(TsHashTable *ht, zend_ulong h)
{
	return zend_ts_hash_index_find(ht, h) != NULL;
}

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 */

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