session.h File Reference

#include "dbtype_def.h"
#include "load_session.hpp"
#include "query_list.h"
#include "query_manager.h"
#include "system_parameter.h"
#include "thread_compat.hpp"
#include "tz_support.h"

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Functions
void	session_states_init (THREAD_ENTRY *thread_p)
void	session_states_finalize (THREAD_ENTRY *thread_p)
int	session_state_create (THREAD_ENTRY *thread_p, SESSION_ID *id)
int	session_state_destroy (THREAD_ENTRY *thread_p, const SESSION_ID id)
int	session_check_session (THREAD_ENTRY *thread_p, const SESSION_ID id)
int	session_get_session_id (THREAD_ENTRY *thread_p, SESSION_ID *id)
int	session_get_last_insert_id (THREAD_ENTRY *thread_p, DB_VALUE *value, bool update_last_insert_id)
int	session_set_cur_insert_id (THREAD_ENTRY *thread_p, const DB_VALUE *value, bool force)
int	session_reset_cur_insert_id (THREAD_ENTRY *thread_p)
int	session_begin_insert_values (THREAD_ENTRY *thread_p)
int	session_set_trigger_state (THREAD_ENTRY *thread_p, bool is_trigger)
int	session_get_row_count (THREAD_ENTRY *thread_p, int *row_count)
int	session_set_row_count (THREAD_ENTRY *thread_p, const int row_count)
int	session_get_session_parameters (THREAD_ENTRY *thread_p, SESSION_PARAM **session_parameters)
int	session_set_session_parameters (THREAD_ENTRY *thread_p, SESSION_PARAM *session_parameters)
int	session_create_prepared_statement (THREAD_ENTRY *thread_p, char *name, char *alias_print, SHA1Hash *sha1, char *info, int info_len)
int	session_get_prepared_statement (THREAD_ENTRY *thread_p, const char *name, char **info, int *info_len, xasl_cache_ent **xasl_entry)
int	session_delete_prepared_statement (THREAD_ENTRY *thread_p, const char *name)
int	login_user (THREAD_ENTRY *thread_p, const char *username)
int	session_set_session_variables (THREAD_ENTRY *thread_p, DB_VALUE *values, const int count)
int	session_get_variable (THREAD_ENTRY *thread_p, const DB_VALUE *name, DB_VALUE *result)
int	session_get_variable_no_copy (THREAD_ENTRY *thread_p, const DB_VALUE *name, DB_VALUE **result)
int	session_define_variable (THREAD_ENTRY *thread_p, DB_VALUE *name, DB_VALUE *value, DB_VALUE *result)
int	session_drop_session_variables (THREAD_ENTRY *thread_p, DB_VALUE *values, const int count)
void	session_states_dump (THREAD_ENTRY *thread_p)
void	session_store_query_entry_info (THREAD_ENTRY *thread_p, QMGR_QUERY_ENTRY *qentry_p)
int	session_load_query_entry_info (THREAD_ENTRY *thread_p, QMGR_QUERY_ENTRY *qentry_p)
int	session_remove_query_entry_info (THREAD_ENTRY *thread_p, const QUERY_ID query_id)
int	session_clear_query_entry_info (THREAD_ENTRY *thread_p, const QUERY_ID query_id)
bool	session_is_queryid_idle (THREAD_ENTRY *thread_p, const QUERY_ID query_id, QUERY_ID *max_query_id_uses)
int	session_get_exec_stats_and_clear (THREAD_ENTRY *thread_p, const DB_VALUE *name, DB_VALUE *result)
SESSION_PARAM *	session_get_session_parameter (THREAD_ENTRY *thread_p, PARAM_ID id)
int	session_get_trace_stats (THREAD_ENTRY *thread_p, DB_VALUE *result)
int	session_set_trace_stats (THREAD_ENTRY *thread_p, char *scan_stats, int format)
int	session_clear_trace_stats (THREAD_ENTRY *thread_p)
TZ_REGION *	session_get_session_tz_region (THREAD_ENTRY *thread_p)
int	session_get_number_of_holdable_cursors (void)
int	session_get_private_lru_idx (const void *session_p)
int	session_set_tran_auto_commit (THREAD_ENTRY *thread_p, bool auto_commit)
int	session_set_load_session (THREAD_ENTRY *thread_p, load_session *load_session_p)
int	session_get_load_session (THREAD_ENTRY *thread_p, REFPTR(load_session, load_session_ref_ptr))
void	session_stop_attached_threads (void *session)

Function Documentation

int login_user	(	THREAD_ENTRY *	thread_p,
		const char *	username
	)

Definition at line 1917 of file session.c.

References log_tdes::client, LOG_FIND_TDES(), LOG_FIND_THREAD_TRAN_INDEX, NO_ERROR, NULL, and clientids::set_user().

Referenced by xlogin_user().

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int session_begin_insert_values

(

THREAD_ENTRY *

thread_p

)

Definition at line 1506 of file session.c.

References ER_FAILED, session_state::is_last_insert_id_generated, session_state::is_trigger_involved, NO_ERROR, NULL, and session_get_session_state().

Referenced by qexec_execute_insert().

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int session_check_session	(	THREAD_ENTRY *	thread_p,
		const SESSION_ID	id
	)

Definition at line 810 of file session.c.

References session_state::active_time, ARG_FILE_LINE, assert, DB_EMPTY_SESSION, ER_FAILED, er_log_debug, ER_SES_SESSION_EXPIRED, er_set(), ER_WARNING_SEVERITY, error(), cubthread::lockfree_hashmap< Key, T >::find(), logtb_set_current_user_active(), session_state::mutex, NO_ERROR, NULL, pthread_mutex_unlock, session_set_conn_entry_data(), and active_sessions::states_hashmap.

Referenced by xsession_check_session().

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int session_clear_query_entry_info	(	THREAD_ENTRY *	thread_p,
		const QUERY_ID	query_id
	)

Definition at line 2601 of file session.c.

References ER_FAILED, free_and_init, session_query_entry::next, NO_ERROR, NULL, active_sessions::num_holdable_cursors, session_state::queries, session_query_entry::query_id, and session_get_session_state().

Referenced by xsession_clear_query_entry_info().

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int session_clear_trace_stats

(

THREAD_ENTRY *

thread_p

)

Definition at line 2916 of file session.c.

References assert, ER_FAILED, free_and_init, NO_ERROR, NULL, session_state::plan_string, session_get_session_state(), thread_need_clear_trace(), thread_set_clear_trace(), and session_state::trace_stats.

Referenced by qexec_execute_query().

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int session_create_prepared_statement	(	THREAD_ENTRY *	thread_p,
		char *	name,
		char *	alias_print,
		SHA1Hash *	sha1,
		char *	info,
		int	info_len
	)

Definition at line 1674 of file session.c.

References prepared_statement::alias_print, ARG_FILE_LINE, ER_ERROR_SEVERITY, ER_FAILED, er_log_debug, ER_OUT_OF_VIRTUAL_MEMORY, ER_SES_TOO_MANY_STATEMENTS, er_set(), err, error(), free_and_init, session_state::id, prepared_statement::info, prepared_statement::info_length, intl_identifier_casecmp(), MAX_PREPARED_STATEMENTS_COUNT, prepared_statement::name, prepared_statement::next, NO_ERROR, NULL, session_free_prepared_statement(), session_get_session_state(), prepared_statement::sha1, and session_state::statements.

Referenced by xsession_create_prepared_statement().

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int session_define_variable	(	THREAD_ENTRY *	thread_p,
		DB_VALUE *	name,
		DB_VALUE *	value,
		DB_VALUE *	result
	)

Definition at line 1970 of file session.c.

References assert, db_make_null(), DB_TYPE_CHAR, DB_VALUE_DOMAIN_TYPE, ER_FAILED, err, NO_ERROR, NULL, pr_clone_value(), session_add_variable(), and session_get_session_state().

Referenced by fetch_peek_arith().

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int session_delete_prepared_statement	(	THREAD_ENTRY *	thread_p,
		const char *	name
	)

Definition at line 1865 of file session.c.

References ARG_FILE_LINE, ER_ERROR_SEVERITY, ER_FAILED, ER_IT_PREPARED_NAME_NOT_FOUND, er_log_debug, er_set(), session_state::id, intl_identifier_casecmp(), prepared_statement::name, prepared_statement::next, NO_ERROR, NULL, session_free_prepared_statement(), session_get_session_state(), and session_state::statements.

Referenced by xsession_delete_prepared_statement().

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int session_drop_session_variables	(	THREAD_ENTRY *	thread_p,
		DB_VALUE *	values,
		const int	count
	)

Definition at line 2157 of file session.c.

References session_info::count, ER_FAILED, i, NO_ERROR, NULL, session_drop_variable(), and session_get_session_state().

Referenced by xsession_drop_session_variables().

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int session_get_exec_stats_and_clear	(	THREAD_ENTRY *	thread_p,
		const DB_VALUE *	name,
		DB_VALUE *	result
	)

Definition at line 2187 of file session.c.

References assert, db_get_string(), db_make_bigint(), DB_TYPE_CHAR, DB_VALUE_DOMAIN_TYPE, and NO_ERROR.

Referenced by fetch_peek_arith().

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int session_get_last_insert_id	(	THREAD_ENTRY *	thread_p,
		DB_VALUE *	value,
		bool	update_last_insert_id
	)

Definition at line 1381 of file session.c.

References assert, session_state::cur_insert_id, DB_IS_NULL, ER_FAILED, session_state::is_trigger_involved, session_state::last_insert_id, NO_ERROR, NULL, pr_clear_value(), pr_clone_value(), and session_get_session_state().

Referenced by fetch_peek_arith(), and xsession_get_last_insert_id().

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int session_get_load_session	(	THREAD_ENTRY *	thread_p,
		REFPTR(load_session, load_session_ref_ptr)
	)

Definition at line 3129 of file session.c.

References ER_FAILED, session_state::load_session_p, NO_ERROR, NULL, and session_get_session_state().

Referenced by sloaddb_destroy(), sloaddb_fetch_status(), sloaddb_install_class(), sloaddb_interrupt(), sloaddb_load_batch(), and sloaddb_update_stats().

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int session_get_number_of_holdable_cursors

(

void

)

Definition at line 3070 of file session.c.

References active_sessions::num_holdable_cursors.

Referenced by perfmon_get_peek_stats().

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int session_get_prepared_statement	(	THREAD_ENTRY *	thread_p,
		const char *	name,
		char **	info,
		int *	info_len,
		xasl_cache_ent **	xasl_entry
	)

Definition at line 1786 of file session.c.

References prepared_statement::alias_print, ARG_FILE_LINE, assert, ASSERT_ERROR, ER_ERROR_SEVERITY, ER_FAILED, ER_IT_PREPARED_NAME_NOT_FOUND, er_log_debug, ER_OUT_OF_VIRTUAL_MEMORY, er_set(), err, session_state::id, prepared_statement::info, prepared_statement::info_length, intl_identifier_casecmp(), prepared_statement::name, prepared_statement::next, NO_ERROR, NULL, session_get_session_state(), prepared_statement::sha1, session_state::statements, XASL_CACHE_SEARCH_GENERIC, and xcache_find_sha1().

Referenced by xsession_get_prepared_statement().

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int session_get_private_lru_idx

(

const void *

session_p

)

Definition at line 3084 of file session.c.

Referenced by css_server_task::execute(), and css_server_external_task::execute().

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int session_get_row_count	(	THREAD_ENTRY *	thread_p,
		int *	row_count
	)

Definition at line 1562 of file session.c.

References assert, ER_FAILED, NO_ERROR, NULL, session_state::row_count, and session_get_session_state().

Referenced by fetch_peek_arith(), and xsession_get_row_count().

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int session_get_session_id	(	THREAD_ENTRY *	thread_p,
		SESSION_ID *	id
	)

Definition at line 1347 of file session.c.

References assert, db_Session_id, ER_FAILED, NO_ERROR, and NULL.

Referenced by session_get_session_state(), and session_get_variable_no_copy().

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SESSION_PARAM* session_get_session_parameter	(	THREAD_ENTRY *	thread_p,
		PARAM_ID	id
	)

Definition at line 2714 of file session.c.

References assert, session_info::count, i, NULL, session_param::prm_id, PRM_LAST_ID, session_get_session_state(), session_state::session_parameters, and sysprm_get_session_parameters_count().

Referenced by prm_get_value(), prm_set_default(), and sysprm_set_value().

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int session_get_session_parameters	(	THREAD_ENTRY *	thread_p,
		SESSION_PARAM **	session_parameters
	)

Definition at line 1613 of file session.c.

References assert, ER_FAILED, free_and_init, NO_ERROR, NULL, session_get_session_state(), and session_state::session_parameters.

Referenced by sysprm_get_id().

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TZ_REGION* session_get_session_tz_region

(

THREAD_ENTRY *

thread_p

)

Definition at line 2950 of file session.c.

References assert, css_Active_conn_anchor, END_SHARED_ACCESS_ACTIVE_CONN_ANCHOR, ER_FAILED, session_state::id, css_conn_entry::next, NO_ERROR, NULL, session_state::ref_count, session_get_session_state(), css_conn_entry::session_id, session_state::session_tz_region, and START_SHARED_ACCESS_ACTIVE_CONN_ANCHOR.

Referenced by sysprm_get_id(), sysprm_set_value(), and tz_get_client_tz_region_session().

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int session_get_trace_stats	(	THREAD_ENTRY *	thread_p,
		DB_VALUE *	result
	)

Definition at line 2798 of file session.c.

References db_make_null(), db_make_string(), ER_FAILED, free_and_init, NO_ERROR, NULL, session_state::plan_string, port_close_memstream(), port_open_memstream(), pr_clone_value(), QUERY_TRACE_JSON, QUERY_TRACE_TEXT, session_get_session_state(), thread_set_clear_trace(), session_state::trace_format, and session_state::trace_stats.

Referenced by fetch_peek_arith().

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int session_get_variable	(	THREAD_ENTRY *	thread_p,
		const DB_VALUE *	name,
		DB_VALUE *	result
	)

Definition at line 2003 of file session.c.

References ARG_FILE_LINE, assert, db_get_string(), DB_TYPE_CHAR, DB_VALUE_DOMAIN_TYPE, ER_ERROR_SEVERITY, ER_FAILED, ER_SES_VARIABLE_NOT_FOUND, er_set(), free_and_init, intl_identifier_casecmp(), session_variable::name, session_variable::next, NO_ERROR, NULL, pr_clone_value(), session_get_session_state(), session_state::session_variables, strlen, and session_variable::value.

Referenced by fetch_peek_arith(), and xsession_get_session_variable().

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int session_get_variable_no_copy	(	THREAD_ENTRY *	thread_p,
		const DB_VALUE *	name,
		DB_VALUE **	result
	)

Definition at line 2069 of file session.c.

References ARG_FILE_LINE, assert, db_get_string(), DB_TYPE_CHAR, DB_VALUE_DOMAIN_TYPE, ER_ERROR_SEVERITY, ER_FAILED, ER_SES_SESSION_EXPIRED, ER_SES_VARIABLE_NOT_FOUND, er_set(), cubthread::lockfree_hashmap< Key, T >::find(), free_and_init, session_state::mutex, session_variable::name, session_variable::next, NO_ERROR, NULL, pthread_mutex_unlock, session_get_session_id(), session_state::session_variables, active_sessions::states_hashmap, strlen, and session_variable::value.

Referenced by xsession_get_session_variable_no_copy().

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bool session_is_queryid_idle	(	THREAD_ENTRY *	thread_p,
		const QUERY_ID	query_id,
		QUERY_ID *	max_query_id_uses
	)

Definition at line 2647 of file session.c.

References session_query_entry::next, NULL, session_state::queries, session_query_entry::query_id, and session_get_session_state().

Referenced by qmgr_allocate_query_entry().

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int session_load_query_entry_info	(	THREAD_ENTRY *	thread_p,
		QMGR_QUERY_ENTRY *	qentry_p
	)

Definition at line 2525 of file session.c.

References ER_FAILED, session_query_entry::next, NO_ERROR, NULL, session_state::queries, session_query_entry::query_id, qmgr_query_entry::query_id, sentry_to_qentry(), and session_get_session_state().

Referenced by xsession_load_query_entry_info().

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int session_remove_query_entry_info	(	THREAD_ENTRY *	thread_p,
		const QUERY_ID	query_id
	)

Definition at line 2556 of file session.c.

References ER_FAILED, free_and_init, session_query_entry::next, NO_ERROR, NULL, session_state::queries, session_query_entry::query_id, session_free_sentry_data(), and session_get_session_state().

Referenced by xsession_remove_query_entry_info().

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int session_reset_cur_insert_id

(

THREAD_ENTRY *

thread_p

)

Definition at line 1473 of file session.c.

References session_state::cur_insert_id, ER_FAILED, session_state::is_last_insert_id_generated, session_state::is_trigger_involved, NO_ERROR, NULL, pr_clear_value(), and session_get_session_state().

Referenced by qexec_execute_insert(), and xsession_reset_cur_insert_id().

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int session_set_cur_insert_id	(	THREAD_ENTRY *	thread_p,
		const DB_VALUE *	value,
		bool	force
	)

Definition at line 1414 of file session.c.

References session_state::cur_insert_id, DB_IS_NULL, DB_MAX_NUMERIC_PRECISION, DB_TYPE_NUMERIC, DB_VALUE_PRECISION, DB_VALUE_SCALE, DB_VALUE_TYPE, DOMAIN_COMPATIBLE, ER_FAILED, session_state::is_last_insert_id_generated, session_state::is_trigger_involved, session_state::last_insert_id, NO_ERROR, NULL, pr_clear_value(), pr_clone_value(), tp_domain::precision, tp_domain::scale, session_get_session_state(), tp_domain_resolve_default(), and tp_value_cast().

Referenced by xsession_set_cur_insert_id().

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int session_set_load_session	(	THREAD_ENTRY *	thread_p,
		load_session *	load_session_p
	)

Definition at line 3113 of file session.c.

References ER_FAILED, session_state::load_session_p, NO_ERROR, NULL, and session_get_session_state().

Referenced by sloaddb_destroy(), and sloaddb_init().

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int session_set_row_count	(	THREAD_ENTRY *	thread_p,
		const int	row_count
	)

Definition at line 1586 of file session.c.

References ARG_FILE_LINE, ER_FAILED, er_log_debug, session_state::id, NO_ERROR, NULL, session_state::row_count, and session_get_session_state().

Referenced by xsession_set_row_count().

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int session_set_session_parameters	(	THREAD_ENTRY *	thread_p,
		SESSION_PARAM *	session_parameters
	)

Definition at line 1641 of file session.c.

References assert, ER_FAILED, NO_ERROR, NULL, session_get_session_state(), and session_state::session_parameters.

Referenced by sysprm_get_id().

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int session_set_session_variables	(	THREAD_ENTRY *	thread_p,
		DB_VALUE *	values,
		const int	count
	)

Definition at line 1939 of file session.c.

References assert, session_info::count, ER_FAILED, i, NO_ERROR, NULL, session_add_variable(), and session_get_session_state().

Referenced by xsession_set_session_variables().

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int session_set_trace_stats	(	THREAD_ENTRY *	thread_p,
		char *	scan_stats,
		int	format
	)

Definition at line 2888 of file session.c.

References ER_FAILED, free_and_init, NO_ERROR, NULL, session_get_session_state(), session_state::trace_format, and session_state::trace_stats.

Referenced by qexec_clear_regu_variable_list().

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int session_set_tran_auto_commit	(	THREAD_ENTRY *	thread_p,
		bool	auto_commit
	)

Definition at line 3097 of file session.c.

References session_state::auto_commit, ER_FAILED, NO_ERROR, NULL, and session_get_session_state().

Referenced by xsession_set_tran_auto_commit().

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int session_set_trigger_state	(	THREAD_ENTRY *	thread_p,
		bool	is_trigger
	)

Definition at line 1534 of file session.c.

References ER_FAILED, session_state::is_trigger_involved, NO_ERROR, NULL, and session_get_session_state().

Referenced by xqmgr_execute_query(), and xqmgr_prepare_and_execute_query().

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int session_state_create	(	THREAD_ENTRY *	thread_p,
		SESSION_ID *	id
	)

Definition at line 637 of file session.c.

References session_state::active_time, ARG_FILE_LINE, assert, DB_EMPTY_SESSION, ER_FAILED, er_log_debug, cubthread::lockfree_hashmap< Key, T >::find(), session_state::id, cubthread::lockfree_hashmap< Key, T >::insert(), active_sessions::last_session_id, logtb_set_current_user_active(), session_state::mutex, NO_ERROR, NULL, pgbuf_assign_private_lru(), session_state::private_lru_index, prm_get_bool_value(), PRM_ID_ER_LOG_DEBUG, pthread_mutex_unlock, session_set_conn_entry_data(), and active_sessions::states_hashmap.

Referenced by xsession_create_new().

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int session_state_destroy	(	THREAD_ENTRY *	thread_p,
		const SESSION_ID	id
	)

Definition at line 741 of file session.c.

References ARG_FILE_LINE, assert, assert_release, DB_EMPTY_SESSION, ER_FAILED, er_log_debug, ER_SES_SESSION_EXPIRED, er_set(), ER_WARNING_SEVERITY, cubthread::lockfree_hashmap< Key, T >::erase_locked(), error(), cubthread::lockfree_hashmap< Key, T >::find(), logtb_set_current_user_active(), session_state::mutex, NO_ERROR, NULL, pthread_mutex_unlock, session_state::ref_count, session_state_uninit(), active_sessions::states_hashmap, and success().

Referenced by xsession_end_session().

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void session_states_dump

(

THREAD_ENTRY *

thread_p

)

Definition at line 2208 of file session.c.

References cubthread::lockfree_hashmap< Key, T >::get_element_count(), NULL, session_dump_session(), and active_sessions::states_hashmap.

Referenced by session_states_finalize().

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void session_states_finalize

(

THREAD_ENTRY *

thread_p

)

Definition at line 607 of file session.c.

References ARG_FILE_LINE, cubthread::lockfree_hashmap< Key, T >::destroy(), envvar_get(), er_log_debug, NULL, session_control_daemon_destroy(), session_states_dump(), and active_sessions::states_hashmap.

Referenced by boot_restart_server(), and xboot_shutdown_server().

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void session_states_init

(

THREAD_ENTRY *

thread_p

)

Definition at line 582 of file session.c.

References ARG_FILE_LINE, er_log_debug, cubthread::lockfree_hashmap< Key, T >::init(), active_sessions::last_session_id, active_sessions::num_holdable_cursors, session_control_daemon_init(), SESSIONS_HASH_SIZE, sessions_Ts, active_sessions::states_hashmap, and THREAD_TS_SESSIONS.

Referenced by boot_restart_server(), and xboot_initialize_server().

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void session_stop_attached_threads

(

void *

session

)

Definition at line 3150 of file session.c.

References assert, cubload::session::interrupt(), session_state::load_session_p, NULL, and cubload::session::wait_for_completion().

Referenced by session_state_uninit(), and ssession_stop_attached_threads().

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void session_store_query_entry_info	(	THREAD_ENTRY *	thread_p,
		QMGR_QUERY_ENTRY *	qentry_p
	)

Definition at line 2440 of file session.c.

References assert, qmgr_query_entry::list_id, session_query_entry::next, NULL, active_sessions::num_holdable_cursors, qentry_to_sentry(), session_state::queries, qmgr_query_entry::query_id, session_get_session_state(), session_preserve_temporary_files(), and qmgr_query_entry::temp_vfid.

Referenced by xsession_store_query_entry_info().

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