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<?php
/**
* A sampling profiler.
*
* Collects a stack trace every time a timer event fires.
*/
class ExcimerProfiler {
/**
* Set the period.
*
* This will take effect the next time start() is called.
*
* If this method is not called, the default period of 0.1 seconds
* will be used.
*
* @param float $period The period in seconds
*/
public function setPeriod( $period ) {
}
/**
* Set the event type. May be either EXCIMER_REAL, for real (wall-clock)
* time, or EXCIMER_CPU, for CPU time. The default is EXCIMER_REAL.
*
* This will take effect the next time start() is called.
*
* @param int $eventType
*/
public function setEventType( $eventType ) {
}
/**
* Set the maximum depth of stack trace collection. If this depth is
* exceeded, the traversal up the stack will be terminated, so the function
* will appear to have no caller.
*
* By default, there is no limit. If this is called with a depth of zero,
* the limit is disabled.
*
* This will take effect immediately.
*
* @param int $maxDepth
*/
public function setMaxDepth( $maxDepth ) {
}
/**
* Set a callback which will be called once the specified number of samples
* has been collected.
*
* When the ExcimerProfiler object is destroyed, the callback will also
* be called, unless no samples have been collected.
*
* The callback will be called with a single argument: the ExcimerLog
* object containing the samples. Before the callback is called, a new
* ExcimerLog object will be created and registered with the
* ExcimerProfiler. So ExcimerProfiler::getLog() should not be used from
* the callback, since it will not return the samples.
*
* @param callable $callback
* @param int $maxSamples
*/
public function setFlushCallback( $callback, $maxSamples ) {
}
/**
* Clear the flush callback. No callback will be called regardless of
* how many samples are collected.
*/
public function clearFlushCallback() {
}
/**
* Start the profiler. If the profiler was already running, it will be
* stopped and restarted with new options.
*/
public function start() {
}
/**
* Stop the profiler.
*/
public function stop() {
}
/**
* Get the current ExcimerLog object.
*
* Note that if the profiler is running, the object thus returned may be
* modified by a timer event at any time, potentially invalidating your
* analysis. Instead, the profiler should be stopped first, or flush()
* should be used.
*
* @return ExcimerLog
*/
public function getLog() {
}
/**
* Create and register a new ExcimerLog object, and return the old
* ExcimerLog object.
*
* This will return all accumulated events to this point, and reset the
* log with a new log of zero length.
*
* @return ExcimerLog
*/
public function flush() {
}
}
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