EVLOOP(3) 1 EVLOOP(3)
The EvLoop class
INTRODUCTION
Represents an event loop that is always distinct from the default loop . Unlike the default loop , it cannot handle EvChild watchers.
Having threads we have to create a loop per thread, and use the the default loop in the parent thread.
The default event loop is initialized automatically by Ev . It is accessable via methods of the Ev class, or via EvLoop::defaultLoop
method.
CLASS SYNOPSIS
EvLoop
final
EvLoop
Properties
o public$data
o public$backend
o public$is_default_loop
o public$iteration
o public$pending
o public$io_interval
o public$timeout_interval
o public$depth
Methods
o public int EvLoop::backend (void )
o finalpublic EvCheck EvLoop::check (string $callback, [string $data], [string $priority])
o finalpublic EvChild EvLoop::child (string $pid, string $trace, string $callback, [string $data], [string $priority])
o public EvLoop::__construct ([int $flags], [mixed $data = NULL], [double $io_interval = 0.0], [double $timeout_interval = 0.0])
o publicstatic EvLoop EvLoop::defaultLoop ([int $flags = Ev::FLAG_AUTO], [mixed $data = NULL], [double $io_interval = 0.], [double
$timeout_interval = 0.])
o finalpublic EvEmbed EvLoop::embed (string $other, [string $callback], [string $data], [string $priority])
o finalpublic EvFork EvLoop::fork NULL (callable $callback, [mixed $data], [int $priority])
o finalpublic EvIdle EvLoop::idle NULL (callable $callback, [mixed $data], [int $priority])
o public void EvLoop::invokePending (void )
o finalpublic EvIo EvLoop::io NULL (mixed $fd, int $events, callable $callback, [mixed $data], [int $priority])
o public void EvLoop::loopFork (void )
o public double EvLoop::now (void )
o public void EvLoop::nowUpdate (void )
o finalpublic EvPeriodic EvLoop::periodic NULL (double $offset, double $interval, callable $callback, [mixed $data], [int $priority])
o finalpublic EvPrepare EvLoop::prepare NULL (callable $callback, [mixed $data], [int $priority])
o public void EvLoop::resume (void )
o public void EvLoop::run ([int $flags])
o finalpublic EvSignal EvLoop::signal NULL (int $signum, callable $callback, [mixed $data], [int $priority])
o finalpublic EvStat EvLoop::stat NULL (string $path, double $interval, callable $callback, [mixed $data], [int $priority])
o public void EvLoop::stop ([int $how])
o public void EvLoop::suspend (void )
o finalpublic EvTimer EvLoop::timer NULL (double $after, double $repeat, callable $callback, [mixed $data], [int $priority])
o public void EvLoop::verify (void )
PROPERTIES
o $data
- Custom data attached to loop
o $backend
- Readonly . The backend flags indicating the event backend in use.
o $is_default_loop
- Readonly . TRUE if it is the default event loop.
o $iteration
- The current iteration count of the loop. See Ev::iteration
o $pending
- The number of pending watchers. 0 indicates that there are no watchers pending.
o $io_interval
- Higher $io_interval allows libev to spend more time collecting EvIo events, so more events can be handled per iteration, at the
cost of increasing latency. Timeouts (both EvPeriodic and EvTimer ) will not be affected. Setting this to a non-zero value will
introduce an additional sleep() call into most loop iterations. The sleep time ensures that libev will not poll for EvIo events
more often than once per this interval, on average. Many programs can usually benefit by setting the $io_interval to a value near
0.1 , which is often enough for interactive servers(not for games). It usually doesn't make much sense to set it to a lower value
than 0.01 , as this approaches the timing granularity of most systems. See also FUNCTIONS CONTROLLING EVENT LOOPS .
o $timeout_interval
- Higher $timeout_interval allows libev to spend more time collecting timeouts, at the expense of increased latency/jitter/inex-
actness(the watcher callback will be called later). EvIo watchers will not be affected. Setting this to a non-null value will not
introduce any overhead in libev . See also FUNCTIONS CONTROLLING EVENT LOOPS .
o $depth
- The recursion depth. See Ev::depth .
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