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db.php
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db.php
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<?php
/**
* PHP PGO Training - to be used during Profile Guided Optimization builds.
*
* Copyright (C) 2016 Intel Corporation
*
* This script is derived from Wordpress - Web publishing software:
* Copyright 2003-2010 by the contributors
* WordPress is released under the GPL
*
* This program is free software and open source 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; either version 2 of the License,
* or (at your option) any later version.
*
* 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
* http://www.gnu.org/licenses/gpl.html
*
* Authors:
* Gabriel Samoila <gabriel.c.samoila@intel.com>
* Bogdan Andone <bogdan.andone@intel.com>
*/
/* Constants for scaling the number of runs;
* Users can change these value for tuning execution weights
*/
define('SQL_QUERIES_IT', 40); /* how many times sql module will run */
define( 'OBJECT_K', 'OBJECT_K' );
define( 'ARRAY_A', 'ARRAY_A' );
define( 'ARRAY_N', 'ARRAY_N' );
define( 'OBJECT', 'OBJECT' );
define( 'object', 'OBJECT' ); // Back compat.
function mysql_register_training(& $functions)
{
/* if extension is missing goto next bench module */
if (!extension_loaded("mysqli")) {
echo "<WARNING> MySQL benchmark module not loaded: mysqli extension is missing\n";
return -1;
}
/* check if a connection to DB is possible */
$handler = new mysqli(DB_HOST, DB_USER, DB_PASSWORD);
if ( $handler->connect_errno ) {
$handler = null;
die("<ERROR> MySQL benchmark module not loaded: Wrong credentials.\n".
"Make sure the following constants in constants.php are correct: DB_USER, DB_PASSWORD, DB_NAME, DB_HOST.\n");
} else {
$success = @mysqli_select_db($handler, DB_NAME);
if (!$success) {
$handler->close();
die("<ERROR> MySQL benchmark module not loaded: Failed to select database.\n".
"Make sure you call: </path/to/php>/php init.php\n");
}
}
$handler->close();
echo "MySQL benchmark module loaded!\n";
$functions[] = "run_mysql_queries";
}
/**
* Calls Mysql functions from db.php
*/
function run_mysql_queries() {
$newDB = new db(DB_USER, DB_PASSWORD, DB_NAME, DB_HOST);
if (!$newDB->check_connection())
die("Connection failed.\n".
"Make sure the following constants in constants.php are correct: DB_USER, DB_PASSWORD, DB_NAME, DB_HOST.\n".
"Make sure you call: </path/to/php>/php init.php\n".
"!!!Attention: restart training process from scratch(make clean && make pgo-train)");
else {
$names = array("\"WinnieThePooh\"" , "\"Mickey Mouse\"", "\"something\"", "\"random_name\"", "\"YetAnotherName\"", "\"NotINTable\"");
for ($i=0; $i < SQL_QUERIES_IT; $i++) {
first_query($newDB);
second_query($newDB);
for ($j = 0; $j < 10; $j++){
select_simple_WHERE($newDB, " * ", "col2", $names[$j%6]);
}
select_INNER_JOIN($newDB);
multiple_WHERE_CLAUSES($newDB);
}
}
}
class db {
var $show_errors = false;
var $last_error = ''; // last error during query
var $num_queries = 0; // amount of queries made
var $rows_affected = 0; // count of affected rows by previous query
var $insert_id = 0; // ID generated for AUTO_INCREMEND column
var $last_query; // last query made
var $last_result; // result of the last query made
var $result;
var $queries; // queries that were executed
var $ready = false; //queries are ready to start executing
var $tables = array( 'table_one', 'table_two', 'table_three');
var $reconnect_retries = 2;
protected $dbuser;
protected $dbpassword;
protected $dbname;
protected $dbhost;
protected $dbhandle;
private $has_connected = false;
private $use_mysqli = false;
public $table_one;
public $table_two;
public $table_three;
public function __construct($user, $pass, $dbname, $dbhost) {
register_shutdown_function( array( $this, '__destruct' ) );
if (function_exists('mysqli_connect')) {
$this -> use_mysqli = true;
}
$this->dbuser = $user;
$this->dbpassword = $pass;
$this->dbname = $dbname;
$this->dbhost = $dbhost;
$this->init();
$this->db_connect();
}
public function __destruct() {
return true;
}
public function init() {
$this->tables = array( 'table_one', 'table_two', 'table_three');
$this->table_one = 'table_one';
$this->table_two = 'table_two';
$this->table_three = 'table_three';
}
public function db_connect() {
$new_link = true;
$client_flags = 0;
if( $this->use_mysqli ) {
// mysqli_real_connect doesn't support the host param including a port or socket
// like mysql_connect does. This duplicates how mysql_connect detects a port and/or socket file.
$port = null;
$socket = null;
$host = $this->dbhost;
$port_or_socket = strstr( $host, ':' );
if ( ! empty( $port_or_socket ) ) {
$host = substr( $host, 0, strpos( $host, ':' ) );
$port_or_socket = substr( $port_or_socket, 1 );
if ( 0 !== strpos( $port_or_socket, '/' ) ) {
$port = intval( $port_or_socket );
$maybe_socket = strstr( $port_or_socket, ':' );
if ( ! empty( $maybe_socket ) ) {
$socket = substr( $maybe_socket, 1 );
}
} else {
$socket = $port_or_socket;
}
}
//@mysqli_real_connect( $this->dbhandle, $host, $this->dbuser, $this->dbpassword, null, $port, $socket, $client_flags );
$this->dbhandle = new mysqli(DB_HOST, DB_USER, DB_PASSWORD);
if ( $this->dbhandle->connect_errno ) {
$this->dbhandle = null;
die("Connection failed.\n".
"Make sure the following constants in constants.php are correct: DB_USER, DB_PASSWORD, DB_NAME, DB_HOST.\n".
"Make sure you call: </path/to/php>/php init.php\n".
"!!!Attention: restart training process from scratch(make clean && make pgo-train)");return false;
} elseif ( $this->dbhandle ) {
//echo "Connected to " . DB_NAME . "!\n";
$this->has_connected = true;
$this->ready = true;
$this->select($this->dbname, $this->dbhandle);
return true;
}
}
return false;
}
public function select($db, $dbh = null) {
if (is_null($dbh)) {
$dbh = $this->dbhandle;
}
if ($this->use_mysqli) {
$success = @mysqli_select_db( $dbh, $db );
}
else {
$success = @mysqli_select_db( $db, $dbh );
}
if (!$success) {
$this->ready = false;
die("Error: db_select_fail");
return false;
}
}
public function flush() {
$this->last_result = array();
$this->last_query = null;
$this->rows_affected = $this->num_rows = 0;
$this->last_error = '';
if ( $this->use_mysqli && $this->result instanceof mysqli_result ) {
mysqli_free_result( $this->result );
$this->result = null;
// Sanity check before using the handle
if ( empty( $this->dbhandle ) || !( $this->dbhandle instanceof mysqli ) ) {
return;
}
// Clear out any results from a multi-query
while ( mysqli_more_results( $this->dbhandle ) ) {
mysqli_next_result( $this->dbhandle );
}
} elseif ( is_resource( $this->result ) ) {
mysql_free_result( $this->result );
}
}
private function _do_query( $query ) {
if ( defined( 'SAVEQUERIES' ) && SAVEQUERIES ) {
$this->timer_start();
}
if ( $this->use_mysqli ) {
$this->result = @mysqli_query( $this->dbhandle, $query );
} else {
$this->result = @mysql_query( $query, $this->dbhandle );
}
$this->num_queries++;
}
public function check_connection( $allow_bail = true ) {
if ( $this->use_mysqli ) {
if ( @mysqli_ping( $this->dbhandle ) ) {
return true;
}
} else {
if ( @mysql_ping( $this->dbhandle ) ) {
return true;
}
}
for ( $tries = 1; $tries <= $this->reconnect_retries; $tries++ ) {
// On the last try, re-enable warnings. We want to see a single instance of the
// "unable to connect" message on the bail() screen, if it appears.
if ( $this->db_connect() ) {
return true;
}
sleep( 1 );
}
}
public function query( $query ) {
if ( ! $this->ready ) {
$this->check_current_query = true;
return false;
}
$this->flush();
// Keep track of the last query for debug..
$this->last_query = $query;
$this->_do_query( $query );
// MySQL server has gone away, try to reconnect
$mysql_errno = 0;
if ( ! empty( $this->dbhandle ) ) {
if ( $this->use_mysqli ) {
$mysql_errno = mysqli_errno( $this->dbhandle );
} else {
$mysql_errno = mysql_errno( $this->dbhandle );
}
}
if ( empty( $this->dbhandle ) || 2006 == $mysql_errno ) {
if ( $this->check_connection() ) {
$this->_do_query( $query );
} else {
$this->insert_id = 0;
return false;
}
}
// If there is an error then take note of it..
if ( $this->use_mysqli ) {
$this->last_error = mysqli_error( $this->dbhandle );
} else {
$this->last_error = mysql_error( $this->dbhandle );
}
if ( $this->last_error ) {
// Clear insert_id on a subsequent failed insert.
if ( $this->insert_id && preg_match( '/^\s*(insert|replace)\s/i', $query ) )
$this->insert_id = 0;
echo $this->dbhandle->error;
die("\nerror\n");
return false;
}
if ( preg_match( '/^\s*(create|alter|truncate|drop)\s/i', $query ) ) {
$return_val = $this->result;
} elseif ( preg_match( '/^\s*(insert|delete|update|replace)\s/i', $query ) ) {
if ( $this->use_mysqli ) {
$this->rows_affected = mysqli_affected_rows( $this->dbhandle );
} else {
$this->rows_affected = mysql_affected_rows( $this->dbhandle );
}
// Take note of the insert_id
if ( preg_match( '/^\s*(insert|replace)\s/i', $query ) ) {
if ( $this->use_mysqli ) {
$this->insert_id = mysqli_insert_id( $this->dbhandle );
} else {
$this->insert_id = mysql_insert_id( $this->dbhandle );
}
}
// Return number of rows affected
$return_val = $this->rows_affected;
} else {
$num_rows = 0;
if ( $this->use_mysqli && $this->result instanceof mysqli_result ) {
while ( $row = @mysqli_fetch_object( $this->result ) ) {
$this->last_result[$num_rows] = $row;
$num_rows++;
}
} elseif ( is_resource( $this->result ) ) {
while ( $row = @mysql_fetch_object( $this->result ) ) {
$this->last_result[$num_rows] = $row;
$num_rows++;
}
}
// Log number of rows the query returned
// and return number of rows selected
$this->num_rows = $num_rows;
$return_val = $num_rows;
}
return $return_val;
}
public function get_results( $query = null, $output = OBJECT ) {
if ( $query ) {
$this->query($query);
} else {
return null;
}
$new_array = array();
if ( $output == OBJECT ) {
// Return an integer-keyed array of row objects
return $this->last_result;
} elseif ( $output == OBJECT_K ) {
// Return an array of row objects with keys from column 1
// (Duplicates are discarded)
foreach ( $this->last_result as $row ) {
$var_by_ref = get_object_vars( $row );
$key = array_shift( $var_by_ref );
if ( ! isset( $new_array[ $key ] ) )
$new_array[ $key ] = $row;
}
return $new_array;
} elseif ( $output == ARRAY_A || $output == ARRAY_N ) {
// Return an integer-keyed array of...
if ( $this->last_result ) {
foreach( (array) $this->last_result as $row ) {
if ( $output == ARRAY_N ) {
// ...integer-keyed row arrays
$new_array[] = array_values( get_object_vars( $row ) );
} else {
// ...column name-keyed row arrays
$new_array[] = get_object_vars( $row );
}
}
}
return $new_array;
} elseif ( strtoupper( $output ) === OBJECT ) {
// Back compat for OBJECT being previously case insensitive.
return $this->last_result;
}
return null;
}
public function get_col( $query = null , $x = 0 ) {
if ( $query ) {
$this->query( $query );
}
$new_array = array();
// Extract the column values
for ( $i = 0, $j = count( $this->last_result ); $i < $j; $i++ ) {
$new_array[$i] = $this->get_var( null, $x, $i );
}
return $new_array;
}
public function get_row( $query = null, $output = OBJECT, $y = 0 ) {
if ( $query ) {
$this->query( $query );
} else {
return null;
}
if ( !isset( $this->last_result[$y] ) )
return null;
if ( $output == OBJECT ) {
return $this->last_result[$y] ? $this->last_result[$y] : null;
} elseif ( $output == ARRAY_A ) {
return $this->last_result[$y] ? get_object_vars( $this->last_result[$y] ) : null;
} elseif ( $output == ARRAY_N ) {
return $this->last_result[$y] ? array_values( get_object_vars( $this->last_result[$y] ) ) : null;
} elseif ( strtoupper( $output ) === OBJECT ) {
// Back compat for OBJECT being previously case insensitive.
return $this->last_result[$y] ? $this->last_result[$y] : null;
} else {
$this->print_error( " \$db->get_row(string query, output type, int offset) -- Output type must be one of: OBJECT, ARRAY_A, ARRAY_N" );
}
}
public function get_var( $query = null, $x = 0, $y = 0 ) {
if ( $query ) {
$this->query( $query );
}
// Extract var out of cached results based x,y vals
if ( !empty( $this->last_result[$y] ) ) {
$values = array_values( get_object_vars( $this->last_result[$y] ) );
}
// If there is a value return it else return null
return ( isset( $values[$x] ) && $values[$x] !== '' ) ? $values[$x] : null;
}
function dump_result($query, $output = OBJECT) {
// echo "\n\t\t-=- DUMP -=-\n";
$result = $this->get_results($query, $output);
$size = sizeof($result);
for( $i = 0 ; $i < $size; $i++){
$row = $result[$i];
$res_str = "";
$num_cols = sizeof($row);
for ($j = 0 ; $j < $num_cols; $j++){
$res_str .= ($row[$j] . "\t");
}
$res_str .= "\n";
// echo $res_str;
}
}
}
function print_row($row) {
for($i=0; $i<sizeof($row); $i++){
echo $row[$i] . " ";
}
echo "\n";
}
/* SELECT wp_posts.* FROM wp_posts WHERE ID IN (1)
You can find this query in includes/post.php @5925
*/
function first_query($db_obj) {
/* table1 - col1 ID */
$ids = array(0, 1, 2);
if (!empty($ids)) {
$some_results = $db_obj->get_results( sprintf("SELECT $db_obj->table_one.* FROM $db_obj->table_one WHERE col1 IN (%s)", join(",", $ids)));
}
// TODO Iterate through results
// also can do different things here like
// parsing the result or updating something
}
function second_query($db_obj) {
/* simulates all of select option stuff from WP queries
table1 - col2 = options->option_name
table1 - col3 = options->option_value
table1 - col2 = options->autoload
*/
//SELECT option_name, option_value FROM wp_options WHERE autoload = 'yes'
//option.php @158
$query = "SELECT col2, col3 FROM $db_obj->table_one WHERE col4 = 'yes'";
$db_obj->dump_result($query, ARRAY_N);
if ( !$something_db = $db_obj->get_results( "SELECT col2, col3 FROM $db_obj->table_one WHERE col4 = 'yes'" ) )
$something_db = $db_obj->get_results( "SELECT col2, col3 FROM $db_obj->table_one" );
}
function select_simple_WHERE($db_obj, $select_this="col3", $col_name="col2", $name="\"something\"") {
/* All select option_value from options ...
option.php @25
*/
$row = $db_obj->get_row("SELECT col3 FROM $db_obj->table_one WHERE $col_name = $name LIMIT 1", ARRAY_N);
// print_row($row);
if ($row)
return true;
return false;
}
function select_INNER_JOIN($db_obj) {
$taxonomies = array("\"WinnieThePooh\"", "\"Mickey Mouse\"", "\"something\"");
$ids = range(0, 100, 2);
$first = "tr.col2 IN (" . implode(" , ",$taxonomies) . ")";
$second = "tr.col1 IN (" . implode(" , ",$ids) . ")";
$where = array( $first, $second);
$where = implode( " AND ", $where );
$select_this = "t.*, tt.*";
$orderby = "ORDER BY tt.col1";
$query = "SELECT $select_this FROM $db_obj->table_two AS t INNER JOIN $db_obj->table_one AS tt ON tt.col1 = t.col1 INNER JOIN $db_obj->table_three AS tr ON tr.col1 = tt.col1 WHERE $where $orderby";
//$results = $db_obj->get_results($query);
$result = $db_obj->dump_result($query, ARRAY_N);
}
function multiple_WHERE_CLAUSES($db_obj, $select_this="*", $order_by="ORDER BY col1") {
$query = "SELECT $select_this FROM $db_obj->table_one WHERE $db_obj->table_one.col3=\"something\" AND $db_obj->table_one.col4=\"yes\" $order_by";
$result = $db_obj->dump_result($query, ARRAY_N);
$row = $db_obj->get_row($query, ARRAY_N);
}