* @since 1.25
*/
class SectionProfiler {
+ /** @var array Map of (mem,real,cpu) */
+ protected $start;
+ /** @var array Map of (mem,real,cpu) */
+ protected $end;
/** @var array List of resolved profile calls with start/end data */
protected $stack = array();
/** @var array Queue of open profile calls with start data */
protected $collated = array();
/** @var bool */
protected $collateDone = false;
+
/** @var bool Whether to collect the full stack trace or just aggregates */
protected $collateOnly = true;
-
/** @var array Cache of a standard broken collation entry */
protected $errorEntry;
public function getFunctionStats() {
$this->collateData();
- $totalCpu = 0.0;
- $totalReal = 0.0;
- $totalMem = 0;
- foreach ( $this->collated as $fname => $data ) {
- $totalCpu += $data['cpu'];
- $totalReal += $data['real'];
- $totalMem += $data['memory'];
- }
+ $totalCpu = max( $this->end['cpu'] - $this->start['cpu'], 0 );
+ $totalReal = max( $this->end['real'] - $this->start['real'], 0 );
+ $totalMem = max( $this->end['memory'] - $this->start['memory'], 0 );
$profile = array();
foreach ( $this->collated as $fname => $data ) {
return $profile;
}
+ /**
+ * Clear all of the profiling data for another run
+ */
+ public function reset() {
+ $this->start = null;
+ $this->end = null;
+ $this->stack = array();
+ $this->workStack = array();
+ $this->collated = array();
+ $this->collateDone = false;
+ }
+
/**
* @return array Initial collation entry
*/
* @param string $functionname
*/
public function profileInInternal( $functionname ) {
+ // Once the data is collated for reports, any future calls
+ // should clear the collation cache so the next report will
+ // reflect them. This matters when trace mode is used.
+ $this->collateDone = false;
+
+ $cpu = $this->getTime( 'cpu' );
+ $real = $this->getTime( 'wall' );
+ $memory = memory_get_usage();
+
+ if ( $this->start === null ) {
+ $this->start = array( 'cpu' => $cpu, 'real' => $real, 'memory' => $memory );
+ }
+
$this->workStack[] = array(
$functionname,
count( $this->workStack ),
- $this->getTime( 'time' ),
- $this->getTime( 'cpu' ),
- memory_get_usage()
+ $real,
+ $cpu,
+ $memory
);
}
$this->stack[] = array( $message, 0, 0.0, 0.0, 0, 0.0, 0.0, 0 );
}
}
+
$realTime = $this->getTime( 'wall' );
$cpuTime = $this->getTime( 'cpu' );
+ $memUsage = memory_get_usage();
+
if ( $this->collateOnly ) {
$elapsedcpu = $cpuTime - $octime;
$elapsedreal = $realTime - $ortime;
- $memchange = memory_get_usage() - $omem;
+ $memchange = $memUsage - $omem;
$this->updateEntry( $functionname, $elapsedcpu, $elapsedreal, $memchange );
} else {
- $this->stack[] = array_merge( $item,
- array( $realTime, $cpuTime, memory_get_usage() ) );
+ $this->stack[] = array_merge( $item, array( $realTime, $cpuTime, $memUsage ) );
}
+
+ $this->end = array(
+ 'cpu' => $cpuTime,
+ 'real' => $realTime,
+ 'memory' => $memUsage
+ );
}
/**
$this->collated = array();
# Estimate profiling overhead
+ $oldEnd = $this->end;
$profileCount = count( $this->stack );
$this->calculateOverhead( $profileCount );
$subcalls = $this->calltreeCount( $this->stack, $index );
if ( substr( $fname, 0, 9 ) !== '-overhead' ) {
- # Adjust for profiling overhead (except special values with elapsed=0
+ # Adjust for profiling overhead (except special values with elapsed=0)
if ( $elapsed ) {
$elapsed -= $overheadInternal;
$elapsed -= ( $subcalls * $overheadTotal );
$this->collated['-overhead-total']['count'] = $profileCount;
arsort( $this->collated, SORT_NUMERIC );
+
+ // Unclobber the end info map (the overhead checking alters it)
+ $this->end = $oldEnd;
}
/**