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/*
* $Id$
*
* This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
* project.
*
* Copyright (C) 1998-2018 OpenLink Software
*
* This project is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; only version 2 of the License, dated June 1991.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef _WI_AQUEUE_H
#define _WI_AQUEUE_H
typedef struct async_queue_s
{
int aq_ref_count;
uint32 aq_ts; /* time of last req */
dk_mutex_t * aq_mtx;
basket_t aq_queue;
int aq_max_threads;
int aq_n_threads;
uint32 aq_req_no;
int aq_anytime_started;
int aq_anytime_timeout;
char aq_deleted;
char aq_do_self_if_would_wait; /* if the caller thread would block , it will run queued items by itself. At time of requesting, it wil not run on self */
char aq_need_own_thread;
char aq_row_autocommit;
char aq_no_more; /* set after an error that should cause no more activity to start on the aq */
bitf_t aq_queue_only:1;
bitf_t aq_non_txn_insert:1;
bitf_t aq_no_triggers:1;
bitf_t aq_no_lt_enter:1; /* for use inside cpt, autocompact etc which run with no client or lt ctx */
dk_hash_t * aq_requests;
du_thread_t * aq_waiting; /* thread waiting for any ready from this aq */
user_t * aq_user;
caddr_t aq_qualifier;
query_instance_t * aq_wait_qi;
caddr_t aq_replicate;
cl_call_stack_t * aq_cl_stack;
int64 aq_main_trx_no;
int64 aq_rc_w_id;
char aq_lt_timestamp[DT_LENGTH];
client_connection_t * aq_creator_cli;
} async_queue_t;
typedef struct aq_thread_s
{
client_connection_t * aqt_cli;
du_thread_t * aqt_thread;
async_queue_t * volatile aqt_aq;
struct aq_request_s * volatile aqt_aqr;
} aq_thread_t;
typedef caddr_t (*aq_func_t) (caddr_t args, caddr_t * err_ret);
typedef struct aq_request_s
{
uint32 aqr_req_no;
aq_func_t aqr_func;
caddr_t aqr_args;
du_thread_t * aqr_waiting;
caddr_t volatile aqr_value;
caddr_t aqr_error;
volatile int aqr_state;
async_queue_t * aqr_aq;
caddr_t aqr_debug;
du_thread_t * aqr_dbg_thread;
db_activity_t aqr_activity;
} aq_request_t;
/* aqr_state */
#define AQR_QUEUED 2
#define AQR_RUNNING 3
#define AQR_DONE 4
int aq_request (async_queue_t * aq, aq_func_t f, caddr_t arg);
caddr_t aq_wait (async_queue_t * aq, int req_no, caddr_t * err, int wait);
caddr_t aq_wait_any (async_queue_t * aq, caddr_t * err, int wait, int *req_no_ret);
caddr_t aq_wait_all (async_queue_t * aq, caddr_t * err_ret);
async_queue_t *aq_allocate (client_connection_t * cli, int n_threads);
#define AQ_DO_SELF_IF_WAIT 1 /* the aq func may run on the requesting thread if the req thread would wait for the aq */
#define AQ_CLUSTER_RECURSIVE 2 /* the aq server threads will keep the cluster call trace for indefinite recursion */
#define AQ_SEPARATE_TXN 4 /* the aq func is sure to have a txn separate from the caller's */
#define AQ_TXN_BRANCH 8
int aq_free (async_queue_t * aq);
void aq_init ();
typedef void (*aq_cleanup_t) (caddr_t);
void aq_wait_all_in_qi (async_queue_t * aq, caddr_t * inst, caddr_t * err_ret, aq_cleanup_t clup);
void aq_check_duplicate (async_queue_t * aq, caddr_t val);
#define AQ_NO_REQUEST ((caddr_t)100)
#endif
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