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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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