FM / private

/usr/include/mysql/server/private

Name	Size	Mode	Actions
atomic/	-	0755	rm
data/	-	0755	rm
aligned.h	1136	0644	edit dl rm
aria_backup.h	1547	0644	edit dl rm
assume_aligned.h	2350	0644	edit dl rm
authors.h	10141	0644	edit dl rm
backup.h	1703	0644	edit dl rm
bounded_queue.h	6093	0644	edit dl rm
client_settings.h	1935	0644	edit dl rm
compat56.h	2280	0644	edit dl rm
config.h	14574	0644	edit dl rm
contributors.h	4878	0644	edit dl rm
create_options.h	4524	0644	edit dl rm
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cset_narrowing.h	3968	0644	edit dl rm
custom_conf.h	1082	0644	edit dl rm
datadict.h	1700	0644	edit dl rm
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debug.h	1234	0644	edit dl rm
debug_sync.h	2046	0644	edit dl rm
derived_handler.h	2379	0644	edit dl rm
derror.h	980	0644	edit dl rm
des_key_file.h	1236	0644	edit dl rm
discover.h	1570	0644	edit dl rm
dur_prop.h	1082	0644	edit dl rm
embedded_priv.h	1733	0644	edit dl rm
events.h	4704	0644	edit dl rm
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filesort.h	7283	0644	edit dl rm
filesort_utils.h	8195	0644	edit dl rm
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heap.h	9480	0644	edit dl rm
hostname.h	5419	0644	edit dl rm
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init.h	852	0644	edit dl rm
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my_cpu.h	4855	0644	edit dl rm
my_crypt.h	904	0644	edit dl rm
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my_default.h	1880	0644	edit dl rm
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password.h	1170	0644	edit dl rm
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pfs_thread_provider.h	5560	0644	edit dl rm
pfs_transaction_provider.h	2846	0644	edit dl rm
privilege.h	28642	0644	edit dl rm
probes_mysql.h	973	0644	edit dl rm
probes_mysql_nodtrace.h	6087	0644	edit dl rm
procedure.h	6819	0644	edit dl rm
protocol.h	12490	0644	edit dl rm
proxy_protocol.h	548	0644	edit dl rm
queues.h	3477	0644	edit dl rm
records.h	3147	0644	edit dl rm
replication.h	16106	0644	edit dl rm
repl_failsafe.h	1585	0644	edit dl rm
rijndael.h	1711	0644	edit dl rm
rowid_filter.h	15477	0644	edit dl rm
rpl_constants.h	3357	0644	edit dl rm
rpl_filter.h	4535	0644	edit dl rm
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rpl_injector.h	9621	0644	edit dl rm
rpl_mi.h	14991	0644	edit dl rm
rpl_parallel.h	17461	0644	edit dl rm
rpl_record.h	1585	0644	edit dl rm
rpl_record_old.h	1407	0644	edit dl rm
rpl_reporting.h	3713	0644	edit dl rm
rpl_rli.h	32746	0644	edit dl rm
rpl_tblmap.h	3177	0644	edit dl rm
rpl_utility.h	9630	0644	edit dl rm
scheduler.h	3199	0644	edit dl rm
scope.h	4393	0644	edit dl rm
select_handler.h	2228	0644	edit dl rm
semisync.h	2287	0644	edit dl rm
semisync_master.h	25766	0644	edit dl rm
semisync_master_ack_receiver.h	8709	0644	edit dl rm
semisync_slave.h	3733	0644	edit dl rm
service_versions.h	2049	0644	edit dl rm
session_tracker.h	14275	0644	edit dl rm
set_var.h	16551	0644	edit dl rm
slave.h	12275	0644	edit dl rm
socketpair.h	842	0644	edit dl rm
source_revision.h	67	0644	edit dl rm
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span.h	3931	0644	edit dl rm
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sp_cache.h	2045	0644	edit dl rm
sp_head.h	64509	0644	edit dl rm
sp_pcontext.h	24897	0644	edit dl rm
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sql_acl.h	14132	0644	edit dl rm
sql_admin.h	2915	0644	edit dl rm
sql_alloc.h	1732	0644	edit dl rm
sql_alter.h	15277	0644	edit dl rm
sql_analyse.h	11125	0644	edit dl rm
sql_analyze_stmt.h	12681	0644	edit dl rm
sql_array.h	6875	0644	edit dl rm
sql_audit.h	13943	0644	edit dl rm
sql_base.h	25889	0644	edit dl rm
sql_basic_types.h	9528	0644	edit dl rm
sql_binlog.h	895	0644	edit dl rm
sql_bitmap.h	7845	0644	edit dl rm
sql_bootstrap.h	1812	0644	edit dl rm
sql_cache.h	21676	0644	edit dl rm
sql_callback.h	1542	0644	edit dl rm
sql_class.h	267535	0644	edit dl rm
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sql_command.h	4804	0644	edit dl rm
sql_connect.h	4087	0644	edit dl rm
sql_const.h	11228	0644	edit dl rm
sql_crypt.h	1437	0644	edit dl rm
sql_cte.h	16533	0644	edit dl rm
sql_cursor.h	2316	0644	edit dl rm
sql_db.h	2440	0644	edit dl rm
sql_debug.h	5727	0644	edit dl rm
sql_delete.h	1343	0644	edit dl rm
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sql_digest.h	3819	0644	edit dl rm
sql_digest_stream.h	1567	0644	edit dl rm
sql_do.h	954	0644	edit dl rm
sql_error.h	39588	0644	edit dl rm
sql_explain.h	29020	0644	edit dl rm
sql_expression_cache.h	4359	0644	edit dl rm
sql_get_diagnostics.h	7867	0644	edit dl rm
sql_handler.h	2910	0644	edit dl rm
sql_help.h	995	0644	edit dl rm
sql_hset.h	3401	0644	edit dl rm
sql_insert.h	2651	0644	edit dl rm
sql_i_s.h	8232	0644	edit dl rm
sql_join_cache.h	48669	0644	edit dl rm
sql_lex.h	172548	0644	edit dl rm
sql_lifo_buffer.h	9676	0644	edit dl rm
sql_limit.h	3187	0644	edit dl rm
sql_list.h	22458	0644	edit dl rm
sql_load.h	1276	0644	edit dl rm
sql_locale.h	2701	0644	edit dl rm
sql_manager.h	960	0644	edit dl rm
sql_mode.h	6735	0644	edit dl rm
sql_parse.h	9135	0644	edit dl rm
sql_partition.h	12072	0644	edit dl rm
sql_partition_admin.h	5940	0644	edit dl rm
sql_plist.h	7732	0644	edit dl rm
sql_plugin.h	7549	0644	edit dl rm
sql_plugin_compat.h	2237	0644	edit dl rm
sql_prepare.h	11409	0644	edit dl rm
sql_priv.h	18593	0644	edit dl rm
sql_profile.h	7816	0644	edit dl rm
sql_reload.h	1036	0644	edit dl rm
sql_rename.h	982	0644	edit dl rm
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sql_schema.h	3303	0644	edit dl rm
sql_select.h	88898	0644	edit dl rm
sql_sequence.h	5180	0644	edit dl rm
sql_servers.h	1777	0644	edit dl rm
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sql_sort.h	21967	0644	edit dl rm
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sql_table.h	9612	0644	edit dl rm
sql_tablespace.h	956	0644	edit dl rm
sql_test.h	2665	0644	edit dl rm
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sql_trigger.h	12332	0644	edit dl rm
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table.h	115905	0644	edit dl rm
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thr_lock.h	7350	0644	edit dl rm
thr_malloc.h	1202	0644	edit dl rm
thr_timer.h	1563	0644	edit dl rm
transaction.h	1466	0644	edit dl rm
tzfile.h	5014	0644	edit dl rm
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t_ctype.h	5639	0644	edit dl rm
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welcome_copyright_notice.h	1218	0644	edit dl rm
winservice.h	1194	0644	edit dl rm
win_tzname_data.h	6506	0644	edit dl rm
wqueue.h	1565	0644	edit dl rm
wsrep.h	3308	0644	edit dl rm
wsrep_applier.h	2703	0644	edit dl rm
wsrep_binlog.h	3441	0644	edit dl rm
wsrep_client_service.h	2560	0644	edit dl rm
wsrep_client_state.h	1566	0644	edit dl rm
wsrep_condition_variable.h	1484	0644	edit dl rm
wsrep_high_priority_service.h	4912	0644	edit dl rm
wsrep_mutex.h	1216	0644	edit dl rm
wsrep_mysqld.h	21370	0644	edit dl rm
wsrep_mysqld_c.h	1227	0644	edit dl rm
wsrep_on.h	1718	0644	edit dl rm
wsrep_priv.h	1634	0644	edit dl rm
wsrep_schema.h	4943	0644	edit dl rm
wsrep_server_service.h	3631	0644	edit dl rm
wsrep_server_state.h	2285	0644	edit dl rm
wsrep_sst.h	3951	0644	edit dl rm
wsrep_storage_service.h	1809	0644	edit dl rm
wsrep_thd.h	11160	0644	edit dl rm
wsrep_trans_observer.h	18119	0644	edit dl rm
wsrep_types.h	997	0644	edit dl rm
wsrep_utils.h	9290	0644	edit dl rm
wsrep_var.h	4607	0644	edit dl rm
wsrep_xid.h	1549	0644	edit dl rm
xa.h	1845	0644	edit dl rm

Edit: /usr/include/mysql/server/private/wsrep_thd.h (11160B)

This program 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; version 2 of the License.

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 Street, Fifth Floor, Boston, MA 02110-1335 USA. */

#ifndef WSREP_THD_H
#define WSREP_THD_H

#include <my_config.h>

#include "mysql/service_wsrep.h"
#include "wsrep/client_state.hpp"
#include "sql_class.h"
#include "wsrep_utils.h"
#include <deque>
class Wsrep_thd_queue
{
public:
  Wsrep_thd_queue(THD* t) : thd(t)
  {
    mysql_mutex_init(key_LOCK_wsrep_thd_queue,
                     &LOCK_wsrep_thd_queue,
                     MY_MUTEX_INIT_FAST);
    mysql_cond_init(key_COND_wsrep_thd_queue, &COND_wsrep_thd_queue, NULL);
  }
  ~Wsrep_thd_queue()
  {
    mysql_mutex_destroy(&LOCK_wsrep_thd_queue);
    mysql_cond_destroy(&COND_wsrep_thd_queue);
  }
  bool push_back(THD* thd)
  {
    DBUG_ASSERT(thd);
    wsp::auto_lock lock(&LOCK_wsrep_thd_queue);
    std::deque<THD*>::iterator it = queue.begin();
    while (it != queue.end())
    {
      if (*it == thd)
      {
        return true;
      }
      it++;
    }
    queue.push_back(thd);
    mysql_cond_signal(&COND_wsrep_thd_queue);
    return false;
  }
  THD* pop_front()
  {
    wsp::auto_lock lock(&LOCK_wsrep_thd_queue);
    while (queue.empty())
    {
      if (thd->killed != NOT_KILLED)
        return NULL;

thd->mysys_var->current_mutex= &LOCK_wsrep_thd_queue;
      thd->mysys_var->current_cond=  &COND_wsrep_thd_queue;

mysql_cond_wait(&COND_wsrep_thd_queue, &LOCK_wsrep_thd_queue);

thd->mysys_var->current_mutex= 0;
      thd->mysys_var->current_cond=  0;
    }
    THD* ret= queue.front();
    queue.pop_front();
    return ret;
  }
private:
  THD*             thd;
  std::deque<THD*> queue;
  mysql_mutex_t    LOCK_wsrep_thd_queue;
  mysql_cond_t     COND_wsrep_thd_queue;
};

int wsrep_show_bf_aborts (THD *thd, SHOW_VAR *var, void *, system_status_var *,
                          enum enum_var_type scope);
bool wsrep_create_appliers(long threads, bool mutex_protected=false);
void wsrep_create_rollbacker();

bool wsrep_bf_abort(THD* bf_thd, THD* victim_thd);
/*
  Abort transaction for victim_thd. This function is called from
  MDL BF abort codepath.
*/
void wsrep_abort_thd(THD *bf_thd,
                     THD *victim_thd,
                     my_bool signal) __attribute__((nonnull(1,2)));

/**
  Kill wsrep connection with kill_signal. Object thd is not
  guaranteed to exist anymore when this function returns.

Asserts that the caller holds victim_thd->LOCK_thd_kill,
  victim_thd->LOCK_thd_data.

@param thd THD object for connection that executes the KILL.
  @param victim_thd THD object for connection to be killed.
  @param kill_signal Kill signal.

@return Zero if the kill was successful, otherwise non-zero error code.
 */
uint wsrep_kill_thd(THD *thd, THD *victim_thd, killed_state kill_signal);

/*
  Backup kill status for commit.
 */
void wsrep_backup_kill_for_commit(THD *);

/*
  Restore KILL status after commit.
 */
void wsrep_restore_kill_after_commit(THD *);

/*
  Helper methods to deal with thread local storage.
  The purpose of these methods is to hide the details of thread
  local storage handling when operating with wsrep storage access
  and streaming applier THDs

With one-thread-per-connection thread handling thread specific
  variables are allocated when the thread is started and deallocated
  before thread exits (my_thread_init(), my_thread_end()). However,
  with pool-of-threads thread handling new thread specific variables
  are allocated for each THD separately (see threadpool_add_connection()),
  and the variables in thread local storage are assigned from
  currently active thread (see thread_attach()). This must be taken into
  account when storing/resetting thread local storage and when creating
  streaming applier THDs.
*/

/**
   Create new variables for thread local storage. With
   one-thread-per-connection thread handling this is a no op,
   with pool-of-threads new variables are created via my_thread_init().
   It is assumed that the caller has called wsrep_reset_threadvars() to clear
   the thread local storage before this call.

@return Zero in case of success, non-zero otherwise.
*/
int wsrep_create_threadvars();

/**
   Delete variables which were created by wsrep_create_threadvars().
   The caller must store variables into thread local storage before
   this call via wsrep_store_threadvars().
*/
void wsrep_delete_threadvars();

/**
   Assign variables from current thread local storage into THD.
   This should be called for THDs whose lifetime is limited to single
   thread execution or which may share the operation context with some
   parent THD (e.g. storage access) and thus don't require separately
   allocated globals.

With one-thread-per-connection thread handling this is a no-op,
   with pool-of-threads the variables which are currently stored into
   thread local storage are assigned to THD.
*/
void wsrep_assign_from_threadvars(THD *);

/**
   Helper struct to save variables from thread local storage.
 */
struct Wsrep_threadvars
{
  THD* cur_thd;
  st_my_thread_var* mysys_var;
};

/**
   Save variables from thread local storage into Wsrep_threadvars struct.
 */
Wsrep_threadvars wsrep_save_threadvars();

/**
   Restore variables into thread local storage from Wsrep_threadvars struct.
*/
void wsrep_restore_threadvars(const Wsrep_threadvars&);

/**
   Store variables into thread local storage.
*/
void wsrep_store_threadvars(THD *);

/**
   Reset thread local storage.
*/
void wsrep_reset_threadvars(THD *);

/**
   Helper functions to override error status

In many contexts it is desirable to mask the original error status
   set for THD or it is necessary to change OK status to error.
   This function implements the common logic for the most
   of the cases.

Rules:
   * If the diagnostics are has OK or EOF status, override it unconditionally
   * If the error is either ER_ERROR_DURING_COMMIT or ER_LOCK_DEADLOCK
     it is usually the correct error status to be returned to client,
     so don't override those by default
 */

static inline void wsrep_override_error(THD *thd, uint error, const char *format= 0, ...)
{
  Diagnostics_area *da= thd->get_stmt_da();
  if (da->is_ok() ||
      da->is_eof() ||
      !da->is_set() ||
      (da->is_error() &&
       da->sql_errno() != error &&
       da->sql_errno() != ER_ERROR_DURING_COMMIT &&
       da->sql_errno() != ER_LOCK_DEADLOCK))
  {
    da->reset_diagnostics_area();
    va_list args;
    va_start(args, format);
    if (!format) format= ER_THD(thd, error);
    my_printv_error(error, format, MYF(0), args);
    va_end(args);
  }
}

static inline void wsrep_override_error(THD* thd,
                                        wsrep::client_error ce,
                                        enum wsrep::provider::status status)
{
  DBUG_ASSERT(ce != wsrep::e_success);
  switch (ce)
  {
  case wsrep::e_error_during_commit:
    if (status == wsrep::provider::error_size_exceeded)
      wsrep_override_error(thd, ER_UNKNOWN_ERROR, "Maximum writeset size exceeded");
    else
      /* TODO: Figure out better error number */
      if (status)
        wsrep_override_error(thd, ER_ERROR_DURING_COMMIT,
                             "Error while appending streaming replication fragment"
                             "(provider status: %s)",
                             wsrep::provider::to_string(status).c_str());
      else
        wsrep_override_error(thd, ER_ERROR_DURING_COMMIT,
                             "Error while appending streaming replication fragment");
    break;
  case wsrep::e_deadlock_error:
    switch (thd->lex->sql_command)
    {
    case SQLCOM_XA_END:
    case SQLCOM_XA_PREPARE:
      wsrep_override_error(thd, ER_XA_RBDEADLOCK);
      break;
    default:
      wsrep_override_error(thd, ER_LOCK_DEADLOCK);
      break;
    }
    break;
  case wsrep::e_interrupted_error:
    wsrep_override_error(thd, ER_QUERY_INTERRUPTED);
    break;
  case wsrep::e_size_exceeded_error:
    wsrep_override_error(thd, ER_UNKNOWN_ERROR, "Maximum writeset size exceeded");
    break;
  case wsrep::e_append_fragment_error:
    /* TODO: Figure out better error number */
    if (status)
      wsrep_override_error(thd, ER_ERROR_DURING_COMMIT,
                           "Error while appending streaming replication fragment"
                           "(provider status: %s)",
                           wsrep::provider::to_string(status).c_str());
    else
      wsrep_override_error(thd, ER_ERROR_DURING_COMMIT,
                           "Error while appending streaming replication fragment");
    break;
  case wsrep::e_not_supported_error:
    wsrep_override_error(thd, ER_NOT_SUPPORTED_YET);
    break;
  case wsrep::e_timeout_error:
    wsrep_override_error(thd, ER_LOCK_WAIT_TIMEOUT);
    break;
  default:
    wsrep_override_error(thd, ER_UNKNOWN_ERROR);
  }
}

/**
   Helper function to log THD wsrep context.

@param thd Pointer to THD
   @param message Optional message
   @param function Function where the call was made from
 */
static inline void wsrep_log_thd(const THD *thd,
                                 const char *message,
                                 const char *function)
{
  WSREP_DEBUG("%s %s\n"
              "    thd: %llu thd_ptr: %p client_mode: %s client_state: %s trx_state: %s\n"
              "    next_trx_id: %lld trx_id: %lld seqno: %lld\n"
              "    is_streaming: %d fragments: %zu\n"
              "    sql_errno: %u message: %s\n"
#define WSREP_THD_LOG_QUERIES
#ifdef WSREP_THD_LOG_QUERIES
              "    command: %d query: %.72s"
#endif /* WSREP_OBSERVER_LOG_QUERIES */
              ,
              function,
              message ? message : "",
              thd->thread_id,
              thd,
              wsrep_thd_client_mode_str(thd),
              wsrep_thd_client_state_str(thd),
              wsrep_thd_transaction_state_str(thd),
              (long long)thd->wsrep_next_trx_id(),
              (long long)thd->wsrep_trx_id(),
              (long long)wsrep_thd_trx_seqno(thd),
              thd->wsrep_trx().is_streaming(),
              thd->wsrep_sr().fragments().size(),
              (thd->get_stmt_da()->is_error() ? thd->get_stmt_da()->sql_errno() : 0),
              (thd->get_stmt_da()->is_error() ? thd->get_stmt_da()->message() : "")
#ifdef WSREP_THD_LOG_QUERIES
              , thd->lex->sql_command,
              wsrep_thd_query(thd)
#endif /* WSREP_OBSERVER_LOG_QUERIES */
              );
}

#define WSREP_LOG_THD(thd_, message_) wsrep_log_thd(thd_, message_, __FUNCTION__)

#endif /* WSREP_THD_H */

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