/**
* Invoked when tick() is called for the first time.
*
* @param StrandInterface $strand The strand that is executing the coroutine.
*/
public function call(StrandInterface $strand)
{
$strand->suspend();
$this->timer = $strand->kernel()->eventLoop()->addTimer($this->timeout, function () use($strand) {
$strand->resumeWithValue(null);
});
}
/**
* Start the coroutine.
*
* @param StrandInterface $strand The strand that is executing the coroutine.
*/
public function call(StrandInterface $strand)
{
$strand->suspend();
$this->promise->then(function ($value) use($strand) {
if ($this->promise) {
$strand->resumeWithValue($value);
}
}, function ($reason) use($strand) {
if ($this->promise) {
$strand->resumeWithException($this->adaptReasonToException($reason));
}
});
}
/**
* Start the coroutine.
*
* @param StrandInterface $strand The strand that is executing the coroutine.
*/
public function call(StrandInterface $strand)
{
// If some of the strands have exited already, resume immediately ...
if ($this->exited) {
$strand->resumeWithValue($this->exited);
return;
}
// Otherwise, suspend the current strand until at least one strand exits ...
$this->strand = $strand;
$this->strand->suspend();
foreach ($this->substrands as $strand) {
$strand->on('exit', [$this, 'onStrandExit']);
}
}
/**
* Execute a coroutine on its own strand.
*
* @param StrandInterface $strand The currently executing strand.
* @param mixed $coroutine The coroutine to execute.
*/
public function execute(StrandInterface $strand, $coroutine)
{
$substrand = $strand->kernel()->execute($coroutine);
$strand->resumeWithValue($substrand);
}
