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/* Copyright (c) 2013, 2025, 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 designed to work 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 either included with
the program or referenced in the documentation.
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, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
/**
@file storage/perfschema/pfs_prepared_stmt.cc
Prepared Statement data structures (implementation).
*/
/*
This code needs extra visibility in the lexer structures
*/
#include "storage/perfschema/pfs_prepared_stmt.h"
#include <string.h>
#include "my_sys.h"
#include "sql_string.h"
#include "storage/perfschema/pfs_buffer_container.h"
#include "storage/perfschema/pfs_global.h"
#include "storage/perfschema/pfs_instr.h"
/**
Initialize table PREPARED_STATEMENTS_INSTANCE.
@param param performance schema sizing
*/
int init_prepared_stmt(const PFS_global_param *param) {
if (global_prepared_stmt_container.init(param->m_prepared_stmt_sizing)) {
return 1;
}
reset_prepared_stmt_instances();
return 0;
}
/** Cleanup table PREPARED_STATEMENTS_INSTANCE. */
void cleanup_prepared_stmt() { global_prepared_stmt_container.cleanup(); }
void PFS_prepared_stmt::reset_data() {
m_prepare_stat.reset();
m_reprepare_stat.reset();
m_execute_stat.reset();
}
static void fct_reset_prepared_stmt_instances(PFS_prepared_stmt *pfs) {
pfs->reset_data();
}
void reset_prepared_stmt_instances() {
global_prepared_stmt_container.apply_all(fct_reset_prepared_stmt_instances);
}
PFS_prepared_stmt *create_prepared_stmt(
void *identity, PFS_thread *thread, PFS_program *pfs_program,
PFS_events_statements *pfs_stmt, uint stmt_id, const char *stmt_name,
uint stmt_name_length, const char *sqltext, uint sqltext_length) {
PFS_prepared_stmt *pfs = nullptr;
pfs_dirty_state dirty_state;
/* Create a new record in prepared stmt stat array. */
pfs = global_prepared_stmt_container.allocate(&dirty_state);
if (pfs != nullptr) {
/* Reset the stats. */
pfs->reset_data();
/* Do the assignments. */
pfs->m_identity = identity;
/* Set query text if available, else it will be set later. */
if (sqltext_length > 0) {
strncpy(pfs->m_sqltext, sqltext, sqltext_length);
}
pfs->m_sqltext_length = sqltext_length;
if (stmt_name != nullptr) {
pfs->m_stmt_name_length = stmt_name_length;
if (pfs->m_stmt_name_length > PS_NAME_LENGTH) {
pfs->m_stmt_name_length = PS_NAME_LENGTH;
}
strncpy(pfs->m_stmt_name, stmt_name, pfs->m_stmt_name_length);
} else {
pfs->m_stmt_name_length = 0;
}
pfs->m_stmt_id = stmt_id;
pfs->m_owner_thread_id = thread->m_thread_internal_id;
/* If this statement prepare is called from a SP. */
if (pfs_program) {
pfs->m_owner_object_type = pfs_program->m_key.m_type;
pfs->m_owner_object_schema = pfs_program->m_key.m_schema_name;
pfs->m_owner_object_name = pfs_program->m_key.m_object_name;
} else {
pfs->m_owner_object_type = NO_OBJECT_TYPE;
pfs->m_owner_object_schema.reset();
pfs->m_owner_object_name.reset();
}
if (pfs_stmt) {
if (pfs_program) {
pfs->m_owner_event_id = pfs_stmt->m_nesting_event_id;
} else {
pfs->m_owner_event_id = pfs_stmt->m_event_id;
}
}
pfs->m_secondary = false;
/* Insert this record. */
pfs->m_lock.dirty_to_allocated(&dirty_state);
}
return pfs;
}
void delete_prepared_stmt(PFS_prepared_stmt *pfs) {
global_prepared_stmt_container.deallocate(pfs);
}
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