mariadb/mysys/psi_noop.c

/* Copyright (c) 2011, 2022, Oracle and/or its affiliates.

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License, version 2.0,
  as published by the Free Software Foundation.

  This program is also distributed with certain software (including
  but not limited to OpenSSL) that is licensed under separate terms,
  as designated in a particular file or component or in included license
  documentation.  The authors of MySQL hereby grant you an additional
  permission to link the program and your derivative works with the
  separately licensed software that they have included with MySQL.

  Without limiting anything contained in the foregoing, this file,
  which is part of C Driver for MySQL (Connector/C), is also subject to the
  Universal FOSS Exception, version 1.0, a copy of which can be found at
  http://oss.oracle.com/licenses/universal-foss-exception.

  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, version 2.0, 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,
  51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */

/*
  Always provide the noop performance interface, for plugins.
*/

#define USE_PSI_V1
#define HAVE_PSI_INTERFACE

#include "my_global.h"
#include "my_pthread.h"
#include "my_sys.h"
#include "mysql/psi/psi.h"

C_MODE_START

#define NNN __attribute__((unused))

static void register_mutex_noop(const char *category NNN,
                                PSI_mutex_info *info NNN,
                                int count NNN)
{
  return;
}

static void register_rwlock_noop(const char *category NNN,
                                 PSI_rwlock_info *info NNN,
                                 int count NNN)
{
  return;
}

static void register_cond_noop(const char *category NNN,
                               PSI_cond_info *info NNN,
                               int count NNN)
{
  return;
}

static void register_thread_noop(const char *category NNN,
                                 PSI_thread_info *info NNN,
                                 int count NNN)
{
  return;
}

static void register_file_noop(const char *category NNN,
                               PSI_file_info *info NNN,
                               int count NNN)
{
  return;
}

static void register_stage_noop(const char *category NNN,
                                PSI_stage_info **info_array NNN,
                                int count NNN)
{
  return;
}

static void register_statement_noop(const char *category NNN,
                                    PSI_statement_info *info NNN,
                                    int count NNN)
{
  return;
}

static void register_socket_noop(const char *category NNN,
                                 PSI_socket_info *info NNN,
                                 int count NNN)
{
  return;
}

static PSI_mutex*
init_mutex_noop(PSI_mutex_key key NNN, void *identity NNN)
{
  return NULL;
}

static void destroy_mutex_noop(PSI_mutex* mutex NNN)
{
  return;
}

static PSI_rwlock*
init_rwlock_noop(PSI_rwlock_key key NNN, void *identity NNN)
{
  return NULL;
}

static void destroy_rwlock_noop(PSI_rwlock* rwlock NNN)
{
  return;
}

static PSI_cond*
init_cond_noop(PSI_cond_key key NNN, void *identity NNN)
{
  return NULL;
}

static void destroy_cond_noop(PSI_cond* cond NNN)
{
  return;
}

static PSI_socket*
init_socket_noop(PSI_socket_key key NNN, const my_socket *fd NNN,
                 const struct sockaddr *addr NNN, socklen_t addr_len NNN)
{
  return NULL;
}

static void destroy_socket_noop(PSI_socket* socket NNN)
{
  return;
}

static PSI_table_share*
get_table_share_noop(my_bool temporary NNN, struct TABLE_SHARE *share NNN)
{
  return NULL;
}

static void release_table_share_noop(PSI_table_share* share NNN)
{
  return;
}

static void
drop_table_share_noop(my_bool temporary NNN, const char *schema_name NNN,
                      int schema_name_length NNN, const char *table_name NNN,
                      int table_name_length NNN)
{
  return;
}

static PSI_table*
open_table_noop(PSI_table_share *share NNN, const void *identity NNN)
{
  return NULL;
}

static void unbind_table_noop(PSI_table *table NNN)
{
  return;
}

static PSI_table*
rebind_table_noop(PSI_table_share *share NNN,
                  const void *identity NNN,
                  PSI_table *table NNN)
{
  return NULL;
}

static void close_table_noop(struct TABLE_SHARE *share NNN,
                             PSI_table *table NNN)
{
  return;
}

static void create_file_noop(PSI_file_key key NNN,
                             const char *name NNN, File file NNN)
{
  return;
}

static int spawn_thread_noop(PSI_thread_key key NNN,
                             pthread_t *thread NNN,
                             const pthread_attr_t *attr NNN,
                             void *(*start_routine)(void*) NNN, void *arg NNN)
{
  return pthread_create(thread, attr, start_routine, arg);
}

static PSI_thread*
new_thread_noop(PSI_thread_key key NNN,
                const void *identity NNN, ulonglong thread_id NNN)
{
  return NULL;
}

static void set_thread_id_noop(PSI_thread *thread NNN, ulonglong id NNN)
{
  return;
}

static void set_thread_THD_noop(PSI_thread *thread NNN, THD *thd NNN)
{
  return;
}

static void set_thread_os_id_noop(PSI_thread *thread NNN)
{
  return;
}

static PSI_thread*
get_thread_noop(void NNN)
{
  return NULL;
}

static const char* get_thread_class_name_noop(void)
{
  return NULL;
}

static void set_thread_user_noop(const char *user NNN, int user_len NNN)
{
  return;
}

static void set_thread_user_host_noop(const char *user NNN, int user_len NNN,
                                      const char *host NNN, int host_len NNN)
{
  return;
}

static void set_thread_db_noop(const char* db NNN, int db_len NNN)
{
  return;
}

static void set_thread_command_noop(int command NNN)
{
  return;
}

static void set_connection_type_noop(opaque_vio_type conn_type NNN)
{
  return;
}

static void set_thread_start_time_noop(time_t start_time NNN)
{
  return;
}

static void set_thread_state_noop(const char* state NNN)
{
  return;
}

static void set_thread_info_noop(const char* info NNN, uint info_len NNN)
{
  return;
}

static void set_thread_noop(PSI_thread* thread NNN)
{
  return;
}

static void set_thread_peer_port_noop(PSI_thread * thread NNN, uint port NNN)
{
  return;
}

static void delete_current_thread_noop(void)
{
  return;
}

static void delete_thread_noop(PSI_thread *thread NNN)
{
  return;
}

static PSI_file_locker*
get_thread_file_name_locker_noop(PSI_file_locker_state *state NNN,
                                 PSI_file_key key NNN,
                                 enum PSI_file_operation op NNN,
                                 const char *name NNN, const void *identity NNN)
{
  return NULL;
}

static PSI_file_locker*
get_thread_file_stream_locker_noop(PSI_file_locker_state *state NNN,
                                   PSI_file *file NNN,
                                   enum PSI_file_operation op NNN)
{
  return NULL;
}


static PSI_file_locker*
get_thread_file_descriptor_locker_noop(PSI_file_locker_state *state NNN,
                                       File file NNN,
                                       enum PSI_file_operation op NNN)
{
  return NULL;
}

static void unlock_mutex_noop(PSI_mutex *mutex NNN)
{
  return;
}

static void unlock_rwlock_noop(PSI_rwlock *rwlock NNN)
{
  return;
}

static void signal_cond_noop(PSI_cond* cond NNN)
{
  return;
}

static void broadcast_cond_noop(PSI_cond* cond NNN)
{
  return;
}

static PSI_idle_locker*
start_idle_wait_noop(PSI_idle_locker_state* state NNN,
                     const char *src_file NNN, uint src_line NNN)
{
  return NULL;
}

static void end_idle_wait_noop(PSI_idle_locker* locker NNN)
{
  return;
}

static PSI_mutex_locker*
start_mutex_wait_noop(PSI_mutex_locker_state *state NNN,
                      PSI_mutex *mutex NNN,
                      PSI_mutex_operation op NNN,
                      const char *src_file NNN, uint src_line NNN)
{
  return NULL;
}

static void end_mutex_wait_noop(PSI_mutex_locker* locker NNN, int rc NNN)
{
  return;
}


static PSI_rwlock_locker*
start_rwlock_rdwait_noop(struct PSI_rwlock_locker_state_v1 *state NNN,
                         struct PSI_rwlock *rwlock NNN,
                         enum PSI_rwlock_operation op NNN,
                         const char *src_file NNN, uint src_line NNN)
{
  return NULL;
}

static void end_rwlock_rdwait_noop(PSI_rwlock_locker* locker NNN, int rc NNN)
{
  return;
}

static struct PSI_rwlock_locker*
start_rwlock_wrwait_noop(struct PSI_rwlock_locker_state_v1 *state NNN,
                         struct PSI_rwlock *rwlock NNN,
                         enum PSI_rwlock_operation op NNN,
                         const char *src_file NNN, uint src_line NNN)
{
  return NULL;
}

static void end_rwlock_wrwait_noop(PSI_rwlock_locker* locker NNN, int rc NNN)
{
  return;
}

static struct PSI_cond_locker*
start_cond_wait_noop(struct PSI_cond_locker_state_v1 *state NNN,
                     struct PSI_cond *cond NNN,
                     struct PSI_mutex *mutex NNN,
                     enum PSI_cond_operation op NNN,
                     const char *src_file NNN, uint src_line NNN)
{
  return NULL;
}

static void end_cond_wait_noop(PSI_cond_locker* locker NNN, int rc NNN)
{
  return;
}

static struct PSI_table_locker*
start_table_io_wait_noop(struct PSI_table_locker_state *state NNN,
                         struct PSI_table *table NNN,
                         enum PSI_table_io_operation op NNN,
                         uint index NNN,
                         const char *src_file NNN, uint src_line NNN)
{
  return NULL;
}

static void end_table_io_wait_noop(PSI_table_locker* locker NNN,
                                   ulonglong numrows NNN)
{
  return;
}

static struct PSI_table_locker*
start_table_lock_wait_noop(struct PSI_table_locker_state *state NNN,
                           struct PSI_table *table NNN,
                           enum PSI_table_lock_operation op NNN,
                           ulong flags NNN,
                           const char *src_file NNN, uint src_line NNN)
{
  return NULL;
}

static void end_table_lock_wait_noop(PSI_table_locker* locker NNN)
{
  return;
}

static void start_file_open_wait_noop(PSI_file_locker *locker NNN,
                                      const char *src_file NNN,
                                      uint src_line NNN)
{
  return;
}

static PSI_file* end_file_open_wait_noop(PSI_file_locker *locker NNN,
                                         void *result NNN)
{
  return NULL;
}

static void end_file_open_wait_and_bind_to_descriptor_noop
  (PSI_file_locker *locker NNN, File file NNN)
{
  return;
}

static void end_temp_file_open_wait_and_bind_to_descriptor_noop
  (PSI_file_locker *locker NNN, File file NNN, const char *filaneme NNN)
{
  return;
}

static void start_file_wait_noop(PSI_file_locker *locker NNN,
                                 size_t count NNN,
                                 const char *src_file NNN,
                                 uint src_line NNN)
{
  return;
}

static void end_file_wait_noop(PSI_file_locker *locker NNN,
                               size_t count NNN)
{
  return;
}

static void start_file_close_wait_noop(PSI_file_locker *locker NNN,
                                       const char *src_file NNN,
                                       uint src_line NNN)
{
  return;
}

static void end_file_close_wait_noop(PSI_file_locker *locker NNN,
                                     int result NNN)
{
  return;
}

static void end_file_rename_wait_noop(PSI_file_locker *locker NNN,
                                      const char *old_name NNN,
                                      const char *new_name NNN,
                                      int result NNN)
{
  return;
}

static PSI_stage_progress*
start_stage_noop(PSI_stage_key key NNN,
                 const char *src_file NNN, int src_line NNN)
{
  return NULL;
}

static PSI_stage_progress*
get_current_stage_progress_noop(void)
{
  return NULL;
}

static void end_stage_noop(void)
{
  return;
}

static PSI_statement_locker*
get_thread_statement_locker_noop(PSI_statement_locker_state *state NNN,
                                 PSI_statement_key key NNN,
                                 const void *charset NNN,
                                 PSI_sp_share *sp_share NNN)
{
  return NULL;
}

static PSI_statement_locker*
refine_statement_noop(PSI_statement_locker *locker NNN,
                      PSI_statement_key key NNN)
{
  return NULL;
}

static void start_statement_noop(PSI_statement_locker *locker NNN,
                                 const char *db NNN, uint db_len NNN,
                                 const char *src_file NNN, uint src_line NNN)
{
  return;
}

static void set_statement_text_noop(PSI_statement_locker *locker NNN,
                                    const char *text NNN, uint text_len NNN)
{
  return;
}

static void set_statement_lock_time_noop(PSI_statement_locker *locker NNN,
                                         ulonglong count NNN)
{
  return;
}

static void set_statement_rows_sent_noop(PSI_statement_locker *locker NNN,
                                         ulonglong count NNN)
{
  return;
}

static void set_statement_rows_examined_noop(PSI_statement_locker *locker NNN,
                                             ulonglong count NNN)
{
  return;
}

static void inc_statement_created_tmp_disk_tables_noop(PSI_statement_locker *locker NNN,
                                                       ulong count NNN)
{
  return;
}

static void inc_statement_created_tmp_tables_noop(PSI_statement_locker *locker NNN,
                                                  ulong count NNN)
{
  return;
}

static void inc_statement_select_full_join_noop(PSI_statement_locker *locker NNN,
                                                ulong count NNN)
{
  return;
}

static void inc_statement_select_full_range_join_noop(PSI_statement_locker *locker NNN,
                                                      ulong count NNN)
{
  return;
}

static void inc_statement_select_range_noop(PSI_statement_locker *locker NNN,
                                            ulong count NNN)
{
  return;
}

static void inc_statement_select_range_check_noop(PSI_statement_locker *locker NNN,
                                                  ulong count NNN)
{
  return;
}

static void inc_statement_select_scan_noop(PSI_statement_locker *locker NNN,
                                           ulong count NNN)
{
  return;
}

static void inc_statement_sort_merge_passes_noop(PSI_statement_locker *locker NNN,
                                                 ulong count NNN)
{
  return;
}

static void inc_statement_sort_range_noop(PSI_statement_locker *locker NNN,
                                          ulong count NNN)
{
  return;
}

static void inc_statement_sort_rows_noop(PSI_statement_locker *locker NNN,
                                         ulong count NNN)
{
  return;
}

static void inc_statement_sort_scan_noop(PSI_statement_locker *locker NNN,
                                         ulong count NNN)
{
  return;
}

static void set_statement_no_index_used_noop(PSI_statement_locker *locker NNN)
{
  return;
}

static void set_statement_no_good_index_used_noop(PSI_statement_locker *locker NNN)
{
  return;
}

static void end_statement_noop(PSI_statement_locker *locker NNN,
                               void *stmt_da NNN)
{
  return;
}

static PSI_transaction_locker*
get_thread_transaction_locker_noop(PSI_transaction_locker_state *state NNN,
                                   const void *xid NNN,
                                   ulonglong trxid NNN,
                                   int isolation_level NNN,
                                   my_bool read_only NNN,
                                   my_bool autocommit NNN)
{
  return NULL;
}

static void start_transaction_noop(PSI_transaction_locker *locker NNN,
                                   const char *src_file NNN, uint src_line NNN)
{
  return;
}

static void set_transaction_xid_noop(PSI_transaction_locker *locker NNN,
                                     const void *xid NNN,
                                     int xa_state NNN)
{
  return;
}

static void set_transaction_xa_state_noop(PSI_transaction_locker *locker NNN,
                                          int xa_state NNN)
{
  return;
}

static void set_transaction_gtid_noop(PSI_transaction_locker *locker NNN,
                                      const void *sid NNN,
                                      const void *gtid_spec NNN)
{
  return;
}

static void set_transaction_trxid_noop(PSI_transaction_locker *locker NNN,
                                       const ulonglong *trxid NNN)
{
  return;
}

static void inc_transaction_savepoints_noop(PSI_transaction_locker *locker NNN,
                                            ulong count NNN)
{
  return;
}

static void inc_transaction_rollback_to_savepoint_noop(PSI_transaction_locker *locker NNN,
                                                       ulong count NNN)
{
  return;
}

static void inc_transaction_release_savepoint_noop(PSI_transaction_locker *locker NNN,
                                                   ulong count NNN)
{
  return;
}

static void end_transaction_noop(PSI_transaction_locker *locker NNN,
                                 my_bool commit NNN)
{
  return;
}

static PSI_socket_locker*
start_socket_wait_noop(PSI_socket_locker_state *state NNN,
                       PSI_socket *socket NNN,
                       PSI_socket_operation op NNN,
                       size_t count NNN,
                       const char *src_file NNN,
                       uint src_line NNN)
{
  return NULL;
}

static void end_socket_wait_noop(PSI_socket_locker *locker NNN,
                                 size_t count NNN)
{
  return;
}

static void set_socket_state_noop(PSI_socket *socket NNN,
                                  enum PSI_socket_state state NNN)
{
  return;
}

static void set_socket_info_noop(PSI_socket *socket NNN,
                                 const my_socket *fd NNN,
                                 const struct sockaddr *addr NNN,
                                 socklen_t addr_len NNN)
{
  return;
}

static void set_socket_thread_owner_noop(PSI_socket *socket NNN)
{
  return;
}

static PSI_prepared_stmt*
create_prepare_stmt_noop(void *identity NNN, uint stmt_id NNN,
                         PSI_statement_locker *locker NNN, 
                         const char *stmt_name NNN, size_t stmt_name_length NNN)
{
  return NULL;
}

static void
execute_prepare_stmt_noop(PSI_statement_locker *locker NNN,
                        PSI_prepared_stmt *prepared_stmt NNN)
{
  return;
}

static void set_prepared_stmt_text_noop(PSI_prepared_stmt *prepared_stmt NNN,
                                        const char *text NNN, uint text_len NNN)
{
  return;
}

void
destroy_prepared_stmt_noop(PSI_prepared_stmt *prepared_stmt NNN)
{
  return;
}

void
reprepare_prepared_stmt_noop(PSI_prepared_stmt *prepared_stmt NNN)
{
  return;
}

static struct PSI_digest_locker*
digest_start_noop(PSI_statement_locker *locker NNN)
{
  return NULL;
}

static void
digest_end_noop(PSI_digest_locker *locker NNN,
                const struct sql_digest_storage *digest NNN)
{
  return;
}

static int
set_thread_connect_attrs_noop(const char *buffer __attribute__ ((unused)),
                             uint length __attribute__ ((unused)),
                             const void *from_cs __attribute__ ((unused)))
{
  return 0;
}

static PSI_sp_locker*
pfs_start_sp_noop(PSI_sp_locker_state *state NNN, PSI_sp_share *sp_share NNN)
{
  return NULL;
}

static void pfs_end_sp_noop(PSI_sp_locker *locker NNN)
{
  return;
}

static void
pfs_drop_sp_noop(uint object_type NNN,
                 const char *schema_name NNN, uint schema_name_length NNN,
                 const char *object_name NNN, uint object_name_length NNN)
{
  return;
}

static PSI_sp_share*
pfs_get_sp_share_noop(uint object_type NNN,
                      const char *schema_name NNN, uint schema_name_length NNN,
                      const char *object_name NNN, uint object_name_length NNN)
{
  return NULL;
}

static void
pfs_release_sp_share_noop(PSI_sp_share *sp_share NNN)
{
  return;
}

static void register_memory_noop(const char *category NNN,
                                 PSI_memory_info *info NNN,
                                 int count NNN)
{
  return;
}

static PSI_memory_key memory_alloc_noop(PSI_memory_key key NNN, size_t size NNN, struct PSI_thread ** owner NNN)
{
  *owner= NULL;
  return PSI_NOT_INSTRUMENTED;
}

static PSI_memory_key memory_realloc_noop(PSI_memory_key key NNN, size_t old_size NNN, size_t new_size NNN, struct PSI_thread ** owner NNN)
{
  *owner= NULL;
  return PSI_NOT_INSTRUMENTED;
}

static PSI_memory_key memory_claim_noop(PSI_memory_key key NNN, size_t size NNN, struct PSI_thread ** owner)
{
  *owner= NULL;
  return PSI_NOT_INSTRUMENTED;
}

static void memory_free_noop(PSI_memory_key key NNN, size_t size NNN, struct PSI_thread * owner NNN)
{
  return;
}

static void unlock_table_noop(PSI_table *table NNN)
{
  return;
}

static PSI_metadata_lock *
create_metadata_lock_noop(void *identity NNN,
                          const MDL_key *mdl_key NNN,
                          opaque_mdl_type mdl_type NNN,
                          opaque_mdl_duration mdl_duration NNN,
                          opaque_mdl_status mdl_status NNN,
                          const char *src_file NNN,
                          uint src_line NNN)
{
  return NULL;
}

static void
set_metadata_lock_status_noop(PSI_metadata_lock* lock NNN,
                              opaque_mdl_status mdl_status NNN)
{
}

static void
destroy_metadata_lock_noop(PSI_metadata_lock* lock NNN)
{
}

static PSI_metadata_locker *
start_metadata_wait_noop(PSI_metadata_locker_state *state NNN,
                         PSI_metadata_lock *mdl NNN,
                         const char *src_file NNN,
                         uint src_line NNN)
{
  return NULL;
}

static void
end_metadata_wait_noop(PSI_metadata_locker *locker NNN,
                       int rc NNN)
{
}

static PSI PSI_noop=
{
  register_mutex_noop,
  register_rwlock_noop,
  register_cond_noop,
  register_thread_noop,
  register_file_noop,
  register_stage_noop,
  register_statement_noop,
  register_socket_noop,
  init_mutex_noop,
  destroy_mutex_noop,
  init_rwlock_noop,
  destroy_rwlock_noop,
  init_cond_noop,
  destroy_cond_noop,
  init_socket_noop,
  destroy_socket_noop,
  get_table_share_noop,
  release_table_share_noop,
  drop_table_share_noop,
  open_table_noop,
  unbind_table_noop,
  rebind_table_noop,
  close_table_noop,
  create_file_noop,
  spawn_thread_noop,
  new_thread_noop,
  set_thread_id_noop,
  set_thread_THD_noop,
  set_thread_os_id_noop,
  get_thread_noop,
  get_thread_class_name_noop,
  set_thread_user_noop,
  set_thread_user_host_noop,
  set_thread_db_noop,
  set_thread_command_noop,
  set_connection_type_noop,
  set_thread_start_time_noop,
  set_thread_state_noop,
  set_thread_info_noop,
  set_thread_noop,
  delete_current_thread_noop,
  delete_thread_noop,
  get_thread_file_name_locker_noop,
  get_thread_file_stream_locker_noop,
  get_thread_file_descriptor_locker_noop,
  unlock_mutex_noop,
  unlock_rwlock_noop,
  signal_cond_noop,
  broadcast_cond_noop,
  start_idle_wait_noop,
  end_idle_wait_noop,
  start_mutex_wait_noop,
  end_mutex_wait_noop,
  start_rwlock_rdwait_noop,
  end_rwlock_rdwait_noop,
  start_rwlock_wrwait_noop,
  end_rwlock_wrwait_noop,
  start_cond_wait_noop,
  end_cond_wait_noop,
  start_table_io_wait_noop,
  end_table_io_wait_noop,
  start_table_lock_wait_noop,
  end_table_lock_wait_noop,
  start_file_open_wait_noop,
  end_file_open_wait_noop,
  end_file_open_wait_and_bind_to_descriptor_noop,
  end_temp_file_open_wait_and_bind_to_descriptor_noop,
  start_file_wait_noop,
  end_file_wait_noop,
  start_file_close_wait_noop,
  end_file_close_wait_noop,
  end_file_rename_wait_noop,
  start_stage_noop,
  get_current_stage_progress_noop,
  end_stage_noop,
  get_thread_statement_locker_noop,
  refine_statement_noop,
  start_statement_noop,
  set_statement_text_noop,
  set_statement_lock_time_noop,
  set_statement_rows_sent_noop,
  set_statement_rows_examined_noop,
  inc_statement_created_tmp_disk_tables_noop,
  inc_statement_created_tmp_tables_noop,
  inc_statement_select_full_join_noop,
  inc_statement_select_full_range_join_noop,
  inc_statement_select_range_noop,
  inc_statement_select_range_check_noop,
  inc_statement_select_scan_noop,
  inc_statement_sort_merge_passes_noop,
  inc_statement_sort_range_noop,
  inc_statement_sort_rows_noop,
  inc_statement_sort_scan_noop,
  set_statement_no_index_used_noop,
  set_statement_no_good_index_used_noop,
  end_statement_noop,
  get_thread_transaction_locker_noop,
  start_transaction_noop,
  set_transaction_xid_noop,
  set_transaction_xa_state_noop,
  set_transaction_gtid_noop,
  set_transaction_trxid_noop,
  inc_transaction_savepoints_noop,
  inc_transaction_rollback_to_savepoint_noop,
  inc_transaction_release_savepoint_noop,
  end_transaction_noop,
  start_socket_wait_noop,
  end_socket_wait_noop,
  set_socket_state_noop,
  set_socket_info_noop,
  set_socket_thread_owner_noop,
  create_prepare_stmt_noop,
  destroy_prepared_stmt_noop,
  reprepare_prepared_stmt_noop,
  execute_prepare_stmt_noop,
  set_prepared_stmt_text_noop,
  digest_start_noop,
  digest_end_noop,
  set_thread_connect_attrs_noop,
  pfs_start_sp_noop,
  pfs_end_sp_noop,
  pfs_drop_sp_noop,
  pfs_get_sp_share_noop,
  pfs_release_sp_share_noop,
  register_memory_noop,
  memory_alloc_noop,
  memory_realloc_noop,
  memory_claim_noop,
  memory_free_noop,

  unlock_table_noop,
  create_metadata_lock_noop,
  set_metadata_lock_status_noop,
  destroy_metadata_lock_noop,
  start_metadata_wait_noop,
  end_metadata_wait_noop,

  set_thread_peer_port_noop
};

/**
  Hook for the instrumentation interface.
  Code implementing the instrumentation interface should register here.
*/
struct PSI_bootstrap *PSI_hook= NULL;

/**
  Instance of the instrumentation interface for the MySQL server.
  @todo This is currently a global variable, which is handy when
  compiling instrumented code that is bundled with the server.
  When dynamic plugin are truly supported, this variable will need
  to be replaced by a macro, so that each XYZ plugin can have it's own
  xyz_psi_server variable, obtained from PSI_bootstrap::get_interface()
  with the version used at compile time for plugin XYZ.
*/

PSI *PSI_server= & PSI_noop;

void set_psi_server(PSI *psi)
{
  PSI_server= psi;
}

C_MODE_END