function fork_one()
{
$pid = pcntl_fork();
if ($pid == 0) {
//子进程处理
do_task();
exit;
} else {
if ($pid > 0) {
//主进程
$pids[$pid] = $pid;
// $shmid = shmop_open(864, 'c', 0755, 1024);
// shmop_write($shmid, "Hello World!", 0);
// shmop_close($shmid);
posix_kill($pid, SIGUSR1);
}
}
}
function callback($id)
{
global $num_runs;
global $dsn_map;
$db_map = array();
$db_map[master] =& MDB2::connect($dsn_map[master]);
if (PEAR::isERROR($db_map[master])) {
die($db_map[master]->getMessage());
}
if (is_array($dsn_map[slave])) {
foreach ($dsn_map[slave] as $dsn_slave) {
$db_slave =& MDB2::connect($dsn_slave);
if (PEAR::isERROR($db_slave)) {
die($db_slave->getMessage());
}
$db_map[slave][] = $db_slave;
}
}
$cnt = 0;
$times = array();
// wait for the parent to HUP me
pcntl_signal(SIGHUP, create_function('', 'return 1;'));
sleep(600);
while ($cnt < $num_runs) {
$t0 = microtime(true);
do_task($db_map);
$t1 = microtime(true) - $t0;
$times[] = $t1;
$cnt++;
}
// cleanup
$db_map[master]->disconnect;
if (is_array($db_map[slave])) {
foreach ($db_map[slave] as $db_slave) {
$db_slave->disconnect;
}
}
$num = count($times);
$tot = array_sum($times);
$avg = $tot / $num;
$r = array($id, $num, min($times), max($times), $avg, $tot);
return $r;
}
function callback($id)
{
global $num_runs;
global $dsn_map;
$db_map = array();
$db_map[master] = mysql_connect($dsn_map[master][0], $dsn_map[master][1], $dsn_map[master][2]);
mysql_select_db($dsn_map[master][3], $db_map[master]);
if (is_array($dsn_map[slave])) {
foreach ($dsn_map[slave] as $dsn_slave) {
$db_slave = mysql_connect($dsn_slave[0], $dsn_slave[1], $dsn_slave[2]);
mysql_select_db($dsn_slave[3], $db_slave);
$db_map[slave][] = $db_slave;
}
}
$cnt = 0;
$times = array();
// wait for the parent to HUP me
pcntl_signal(SIGHUP, create_function('', 'return 1;'));
sleep(600);
while ($cnt < $num_runs) {
$t0 = microtime(true);
do_task($db_map);
$t1 = microtime(true) - $t0;
$times[] = $t1;
$cnt++;
}
// cleanup
mysql_close($db_map[master]);
if (is_array($db_map[slave])) {
foreach ($db_map[slave] as $db_slave) {
mysql_close($db_slave);
}
}
$num = count($times);
$tot = array_sum($times);
$avg = $tot / $num;
$r = array($id, $num, min($times), max($times), $avg, $tot);
return $r;
}
