public function run()
{
echo 'Hello, I am a thread with id ' . $this->getPid() . "!\nTrying to lock the critical section\n";
$lock = new GPhpThreadLockGuard($this->criticalSection);
echo "=--- locked " . $this->getPid() . "\n";
$this->criticalSection->addOrUpdateResource('IAM', $this->getPid());
$criticalSection2 = new GPhpThreadCriticalSection();
$a = new MyThreadThread($criticalSection2, true);
$b = new MyThreadThread($criticalSection2, true);
$a->start();
$b->start();
$a->join();
$b->join();
$criticalSection2->lock();
echo "=###= Last internal cs value: " . $criticalSection2->getResourceValue('IAM') . "\n";
$criticalSection2->unlock();
$this->criticalSection->addOrUpdateResource('IAMNOT', '0xdead1');
$this->criticalSection->removeResource('IAMNOT');
echo "=--- unlocked " . $this->getPid() . "\n";
GPhpThread::resetThreadIdGenerator();
$ms2 = new MyStuff('heavy thread 1');
}
}
}
echo "Master main EP " . getmypid() . "\n";
$criticalSection = new GPhpThreadCriticalSection();
$criticalSection->cleanPipeGarbage();
// remove any garbage left from any ungracefully terminated previous executions
$threadPool = array();
$tpSize = 20;
for ($i = 1; $i <= $tpSize; ++$i) {
$threadPool[$i] = new MyThread($criticalSection, true);
}
// xhprof_enable(XHPROF_FLAGS_CPU + XHPROF_FLAGS_NO_BUILTINS);
GPhpThread::BGN_HIGH_PRIOR_EXEC_BLOCK();
// this will result fast thread creation but, because of that all threads will try
// to reach the critical section at once in some cases may take twice the time for each one in order to lock the critical section
for ($i = 1; $i <= $tpSize; ++$i) {
$threadPool[$i]->start();
echo "{$i} of {$tpSize} started\n";
}
GPhpThread::END_HIGH_PRIOR_EXEC_BLOCK();
for ($i = 1; $i <= $tpSize; ++$i) {
$threadPool[$i]->join();
}
// $xhprof_data = xhprof_disable();
echo "\n\n---The last writing in the critical section was done by thread---\n";
echo "---" . $criticalSection->getResourceValueFast('IAM') . "\n\n";
//uasort($xhprof_data, function ($a, $b) {
// if ($a['wt'] > $b['wt']) return -1;
// else return 1;
//});
// print_r($xhprof_data);
/**
* Waits for executing thread to return.
* @param bool $useBlocking If is set to true will block the until the thread returns.
* @return bool True if the thread has joined otherwise false.
*/
public final function join($useBlocking = true)
{
// {{{
if (!$this->amIStarted) {
return false;
}
if ($this->amIParent()) {
$status = null;
$res = 0;
if ($useBlocking) {
GPhpThread::BGN_HIGH_PRIOR_EXEC_BLOCK();
while (($res = pcntl_waitpid($this->childPid, $status, WNOHANG)) == 0) {
GPhpThreadCriticalSection::dispatch();
usleep(mt_rand(10000, 40000));
}
if ($res > 0 && pcntl_wifexited($status)) {
$this->exitCode = pcntl_wexitstatus($status);
} else {
$this->exitCode = false;
}
if ($this->criticalSection !== null) {
$this->criticalSection->finalize($this->uniqueId);
}
$this->childPid = null;
$this->_childPid = null;
$this->amIStarted = false;
GPhpThread::END_HIGH_PRIOR_EXEC_BLOCK();
} else {
$res = pcntl_waitpid($this->childPid, $status, WNOHANG);
if ($res > 0 && $this->criticalSection !== null) {
$this->criticalSection->finalize($this->uniqueId);
}
if ($res > 0 && pcntl_wifexited($status)) {
$this->exitCode = pcntl_wexitstatus($status);
if ($this->criticalSection !== null) {
$this->criticalSection->finalize($this->uniqueId);
}
$this->amIStarted = false;
} else {
if ($res == -1) {
$this->exitCode = false;
}
}
if ($res != 0) {
if ($this->criticalSection !== null) {
$this->criticalSection->finalize($this->uniqueId);
}
$this->childPid = null;
$this->_childPid = null;
}
}
return $res;
}
if ($this->childPid == -1) {
return false;
}
exit(255);
}
