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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/*
  +----------------------------------------------------------------------+
  | PHP Version 7                                                        |
  +----------------------------------------------------------------------+
  | Copyright (c) The PHP Group                                          |
  +----------------------------------------------------------------------+
  | This source file is subject to version 3.01 of the PHP 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.php.net/license/3_01.txt                                  |
  | If you did not receive a copy of the PHP license and are unable to   |
  | obtain it through the world-wide-web, please send a note to          |
  | license@php.net so we can mail you a copy immediately.               |
  +----------------------------------------------------------------------+
  | Authors: Andrey Hristov <andrey@php.net>                             |
  |          Ulf Wendel <uw@php.net>                                     |
  +----------------------------------------------------------------------+
*/

#ifndef MYSQLND_STATISTICS_H
#define MYSQLND_STATISTICS_H

#ifdef ZTS
#define MYSQLND_STATS_LOCK(stats) tsrm_mutex_lock((stats)->LOCK_access)
#define MYSQLND_STATS_UNLOCK(stats) tsrm_mutex_unlock((stats)->LOCK_access)
#else
#define MYSQLND_STATS_LOCK(stats)
#define MYSQLND_STATS_UNLOCK(stats)
#endif

#ifndef MYSQLND_CORE_STATISTICS_TRIGGERS_DISABLED
#define MYSQLND_STAT_CALL_TRIGGER(s_array, statistic, val) \
			if ((s_array)->triggers[(statistic)] && (s_array)->in_trigger == FALSE) { \
				(s_array)->in_trigger = TRUE; \
				MYSQLND_STATS_UNLOCK((s_array)); \
																						\
				(s_array)->triggers[(statistic)]((s_array), (statistic), (val)); \
																						\
				MYSQLND_STATS_LOCK((s_array)); \
				(s_array)->in_trigger = FALSE; \
			}
#else
#define MYSQLND_STAT_CALL_TRIGGER(s_array, statistic, val)
#endif /* MYSQLND_CORE_STATISTICS_TRIGGERS_DISABLED */

#define MYSQLND_UPDATE_VALUE_AND_CALL_TRIGGER(stats, statistic, value) \
	{ \
			MYSQLND_STATS_LOCK(stats); \
			(stats)->values[(statistic)] += (value); \
			MYSQLND_STAT_CALL_TRIGGER((stats), (statistic), (value)); \
			MYSQLND_STATS_UNLOCK(_p_s); \
	}

#define MYSQLND_DEC_STATISTIC(enabler, stats, statistic) \
 { \
	enum_mysqlnd_collected_stats _s = (statistic);\
	MYSQLND_STATS * _p_s = (MYSQLND_STATS *) (stats); \
	if ((enabler) && _p_s && _s != _p_s->count) { \
		MYSQLND_UPDATE_VALUE_AND_CALL_TRIGGER(_p_s, _s, -1); \
	}\
 }

#define MYSQLND_INC_STATISTIC(enabler, stats, statistic) \
 { \
	enum_mysqlnd_collected_stats _s = (statistic);\
	MYSQLND_STATS * _p_s = (MYSQLND_STATS *) (stats); \
	if ((enabler) && _p_s && _s != _p_s->count) { \
		MYSQLND_UPDATE_VALUE_AND_CALL_TRIGGER(_p_s, _s, 1); \
	}\
 }

#define MYSQLND_INC_STATISTIC_W_VALUE(enabler, stats, statistic, value) \
 { \
	enum_mysqlnd_collected_stats _s = (statistic);\
	MYSQLND_STATS * _p_s = (MYSQLND_STATS *) (stats); \
	if ((enabler) && _p_s && _s != _p_s->count) { \
		uint64_t v = (uint64_t) (value); \
		MYSQLND_UPDATE_VALUE_AND_CALL_TRIGGER(_p_s, _s, v); \
	}\
 }

#define MYSQLND_INC_STATISTIC_W_VALUE2(enabler, stats, statistic1, value1, statistic2, value2) \
 { \
	MYSQLND_STATS * _p_s = (MYSQLND_STATS *) (stats); \
	if ((enabler) && _p_s) { \
		uint64_t v1 = (uint64_t) (value1); \
		uint64_t v2 = (uint64_t) (value2); \
		enum_mysqlnd_collected_stats _s1 = (statistic1);\
		enum_mysqlnd_collected_stats _s2 = (statistic2);\
		if (_s1 != _p_s->count) MYSQLND_UPDATE_VALUE_AND_CALL_TRIGGER(_p_s, _s1, v1); \
		if (_s2 != _p_s->count) MYSQLND_UPDATE_VALUE_AND_CALL_TRIGGER(_p_s, _s2, v2); \
	}\
 }

#define MYSQLND_INC_STATISTIC_W_VALUE3(enabler, stats, statistic1, value1, statistic2, value2, statistic3, value3) \
 { \
	MYSQLND_STATS * _p_s = (MYSQLND_STATS *) (stats); \
	if ((enabler) && _p_s) { \
		uint64_t v1 = (uint64_t) (value1); \
		uint64_t v2 = (uint64_t) (value2); \
		uint64_t v3 = (uint64_t) (value3); \
		enum_mysqlnd_collected_stats _s1 = (statistic1);\
		enum_mysqlnd_collected_stats _s2 = (statistic2);\
		enum_mysqlnd_collected_stats _s3 = (statistic3);\
		if (_s1 != _p_s->count) MYSQLND_UPDATE_VALUE_AND_CALL_TRIGGER(_p_s, _s1, v1); \
		if (_s2 != _p_s->count) MYSQLND_UPDATE_VALUE_AND_CALL_TRIGGER(_p_s, _s2, v2); \
		if (_s3 != _p_s->count) MYSQLND_UPDATE_VALUE_AND_CALL_TRIGGER(_p_s, _s3, v3); \
	}\
 }



PHPAPI void mysqlnd_stats_init(MYSQLND_STATS ** stats, const size_t statistic_count, const zend_bool persistent);
PHPAPI void mysqlnd_stats_end(MYSQLND_STATS * stats, const zend_bool persistent);

PHPAPI void mysqlnd_fill_stats_hash(const MYSQLND_STATS * const stats, const MYSQLND_STRING * names, zval *return_value ZEND_FILE_LINE_DC);

PHPAPI mysqlnd_stat_trigger mysqlnd_stats_set_trigger(MYSQLND_STATS * const stats, enum_mysqlnd_collected_stats stat, mysqlnd_stat_trigger trigger);
PHPAPI mysqlnd_stat_trigger mysqlnd_stats_reset_triggers(MYSQLND_STATS * const stats);

#endif	/* MYSQLND_STATISTICS_H */

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