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<?php
namespace {
/**
* A collected series of stack traces and some utility methods to aggregate them.
*
* ExcimerLog acts as a container for ExcimerLogEntry objects. The Iterator or
* ArrayAccess interfaces may be used to access them. For example:
*
* foreach ( $profiler->getLog() as $entry ) {
* var_dump( $entry->getTrace() );
* }
*
* @implements ArrayAccess<int, ExcimerLogEntry>
* @implements Iterator<int, ExcimerLogEntry>
*/
class ExcimerLog implements ArrayAccess, Iterator
{
/**
* ExcimerLog is not constructible by user code. Objects of this type
* are available via:
* - ExcimerProfiler::getLog()
* - ExcimerProfiler::flush()
* - The callback to ExcimerProfiler::setFlushCallback()
*/
private final function __construct()
{
}
/**
* Aggregate the stack traces and convert them to a line-based format
* understood by Brendan Gregg's FlameGraph utility. Each stack trace is
* represented as a series of function names, separated by semicolons.
* After this identifier, there is a single space character, then a number
* giving the number of times the stack appeared. Then there is a line
* break. This is repeated for each unique stack trace.
*
* @return string
*/
function formatCollapsed()
{
}
/**
* Produce an array with an element for every function which appears in
* the log. The key is a human-readable unique identifier for the function,
* method or closure. The value is an associative array with the following
* elements:
*
* - self: The number of events in which the function itself was running,
* no other userspace function was being called. This includes time
* spent in internal functions that this function called.
* - inclusive: The number of events in which this function appeared
* somewhere in the stack.
*
* And optionally the following elements, if they are relevant:
*
* - file: The filename in which the function appears
* - line: The exact line number at which the first relevant event
* occurred.
* - class: The class name in which the method is defined
* - function: The name of the function or method
* - closure_line: The line number at which the closure was defined
*
* The event counts in the "self" and "inclusive" fields are adjusted for
* overruns. They represent an estimate of the number of profiling periods
* in which those functions were present.
*
* @return array
*/
function aggregateByFunction()
{
}
/**
* Get an array which can be JSON encoded for import into speedscope
*
* @return array
*/
function getSpeedscopeData()
{
}
/**
* Get the total number of profiling periods represented by this log.
*
* @return int
*/
function getEventCount()
{
}
/**
* Get the current ExcimerLogEntry object. Part of the Iterator interface.
*
* @return ExcimerLogEntry
*/
#[\ReturnTypeWillChange]
function current()
{
}
/**
* Get the current integer key or null. Part of the Iterator interface.
*
* @return int
*/
#[\ReturnTypeWillChange]
function key()
{
}
/**
* Advance to the next log entry. Part of the Iterator interface.
*
* @return void
*/
#[\ReturnTypeWillChange]
function next()
{
}
/**
* Rewind back to the first log entry. Part of the Iterator interface.
*
* @return void
*/
#[\ReturnTypeWillChange]
function rewind()
{
}
/**
* Check if the current position is valid. Part of the Iterator interface.
*
* @return bool
*/
#[\ReturnTypeWillChange]
function valid()
{
}
/**
* Get the number of log entries contained in this log. This is always less
* than or equal to the number returned by getEventCount(), which includes
* overruns.
*
* @return int
*/
function count()
{
}
/**
* Determine whether a log entry exists at the specified array offset.
* Part of the ArrayAccess interface.
*
* @param int $offset
* @return bool
*/
#[\ReturnTypeWillChange]
function offsetExists($offset)
{
}
/**
* Get the ExcimerLogEntry object at the specified array offset.
*
* @param int $offset
* @return ExcimerLogEntry
*/
#[\ReturnTypeWillChange]
function offsetGet($offset)
{
}
/**
* This function is included for compliance with the ArrayAccess interface.
* It raises a warning and does nothing.
*
* @param int|null $offset
* @param ExcimerLogEntry $value
*/
#[\ReturnTypeWillChange]
function offsetSet($offset, $value)
{
}
/**
* This function is included for compliance with the ArrayAccess interface.
* It raises a warning and does nothing.
*
* @param int $offset
*/
#[\ReturnTypeWillChange]
function offsetUnset($offset)
{
}
}
}
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