+++ /dev/null
-<?php
-/**
- * This file is only included if profiling is enabled
- */
-
-$wgProfiling = true;
-
-/**
- * @param $functioname name of the function we will profile
- */
-function wfProfileIn($functionname) {
- global $wgProfiler;
- $wgProfiler->profileIn($functionname);
-}
-
-/**
- * @param $functioname name of the function we have profiled
- */
-function wfProfileOut($functionname = 'missing') {
- global $wgProfiler;
- $wgProfiler->profileOut($functionname);
-}
-
-function wfGetProfilingOutput($start, $elapsed) {
- global $wgProfiler;
- return $wgProfiler->getOutput($start, $elapsed);
-}
-
-function wfProfileClose() {
- global $wgProfiler;
- $wgProfiler->close();
-}
-
-if (!function_exists('memory_get_usage')) {
- # Old PHP or --enable-memory-limit not compiled in
- function memory_get_usage() {
- return 0;
- }
-}
-
-/**
- * @todo document
- * @addtogroup Profiler
- */
-class Profiler {
- var $mStack = array (), $mWorkStack = array (), $mCollated = array ();
- var $mCalls = array (), $mTotals = array ();
-
- function __construct() {
- // Push an entry for the pre-profile setup time onto the stack
- global $wgRequestTime;
- if ( !empty( $wgRequestTime ) ) {
- $this->mWorkStack[] = array( '-total', 0, $wgRequestTime, 0 );
- $this->mStack[] = array( '-setup', 1, $wgRequestTime, 0, microtime(true), 0 );
- } else {
- $this->profileIn( '-total' );
- }
- }
-
- function profileIn($functionname) {
- global $wgDebugFunctionEntry;
- if ($wgDebugFunctionEntry && function_exists('wfDebug')) {
- wfDebug(str_repeat(' ', count($this->mWorkStack)).'Entering '.$functionname."\n");
- }
- $this->mWorkStack[] = array($functionname, count( $this->mWorkStack ), $this->getTime(), memory_get_usage());
- }
-
- function profileOut($functionname) {
- $memory = memory_get_usage();
- $time = $this->getTime();
-
- global $wgDebugFunctionEntry;
-
- if ($wgDebugFunctionEntry && function_exists('wfDebug')) {
- wfDebug(str_repeat(' ', count($this->mWorkStack) - 1).'Exiting '.$functionname."\n");
- }
-
- $bit = array_pop($this->mWorkStack);
-
- if (!$bit) {
- wfDebug("Profiling error, !\$bit: $functionname\n");
- } else {
- //if ($wgDebugProfiling) {
- if ($functionname == 'close') {
- $message = "Profile section ended by close(): {$bit[0]}";
- wfDebug( "$message\n" );
- $this->mStack[] = array( $message, 0, '0 0', 0, '0 0', 0 );
- }
- elseif ($bit[0] != $functionname) {
- $message = "Profiling error: in({$bit[0]}), out($functionname)";
- wfDebug( "$message\n" );
- $this->mStack[] = array( $message, 0, '0 0', 0, '0 0', 0 );
- }
- //}
- $bit[] = $time;
- $bit[] = $memory;
- $this->mStack[] = $bit;
- }
- }
-
- function close() {
- while (count($this->mWorkStack)) {
- $this->profileOut('close');
- }
- }
-
- function getOutput() {
- global $wgDebugFunctionEntry;
- $wgDebugFunctionEntry = false;
-
- if (!count($this->mStack) && !count($this->mCollated)) {
- return "No profiling output\n";
- }
- $this->close();
-
- global $wgProfileCallTree;
- if ($wgProfileCallTree) {
- return $this->getCallTree();
- } else {
- return $this->getFunctionReport();
- }
- }
-
- function getCallTree($start = 0) {
- return implode('', array_map(array (& $this, 'getCallTreeLine'), $this->remapCallTree($this->mStack)));
- }
-
- function remapCallTree($stack) {
- if (count($stack) < 2) {
- return $stack;
- }
- $outputs = array ();
- for ($max = count($stack) - 1; $max > 0;) {
- /* Find all items under this entry */
- $level = $stack[$max][1];
- $working = array ();
- for ($i = $max -1; $i >= 0; $i --) {
- if ($stack[$i][1] > $level) {
- $working[] = $stack[$i];
- } else {
- break;
- }
- }
- $working = $this->remapCallTree(array_reverse($working));
- $output = array ();
- foreach ($working as $item) {
- array_push($output, $item);
- }
- array_unshift($output, $stack[$max]);
- $max = $i;
-
- array_unshift($outputs, $output);
- }
- $final = array ();
- foreach ($outputs as $output) {
- foreach ($output as $item) {
- $final[] = $item;
- }
- }
- return $final;
- }
-
- function getCallTreeLine($entry) {
- list ($fname, $level, $start, /* $x */, $end) = $entry;
- $delta = $end - $start;
- $space = str_repeat(' ', $level);
-
- # The ugly double sprintf is to work around a PHP bug,
- # which has been fixed in recent releases.
- return sprintf( "%10s %s %s\n",
- trim( sprintf( "%7.3f", $delta * 1000.0 ) ),
- $space, $fname );
- }
-
- function getTime() {
- return microtime(true);
- #return $this->getUserTime();
- }
-
- function getUserTime() {
- $ru = getrusage();
- return $ru['ru_utime.tv_sec'].' '.$ru['ru_utime.tv_usec'] / 1e6;
- }
-
- function getFunctionReport() {
- $width = 140;
- $nameWidth = $width - 65;
- $format = "%-{$nameWidth}s %6d %13.3f %13.3f %13.3f%% %9d (%13.3f -%13.3f) [%d]\n";
- $titleFormat = "%-{$nameWidth}s %6s %13s %13s %13s %9s\n";
- $prof = "\nProfiling data\n";
- $prof .= sprintf($titleFormat, 'Name', 'Calls', 'Total', 'Each', '%', 'Mem');
- $this->mCollated = array ();
- $this->mCalls = array ();
- $this->mMemory = array ();
-
- # Estimate profiling overhead
- $profileCount = count($this->mStack);
- wfProfileIn('-overhead-total');
- for ($i = 0; $i < $profileCount; $i ++) {
- wfProfileIn('-overhead-internal');
- wfProfileOut('-overhead-internal');
- }
- wfProfileOut('-overhead-total');
-
- # First, subtract the overhead!
- foreach ($this->mStack as $entry) {
- $fname = $entry[0];
- $start = $entry[2];
- $end = $entry[4];
- $elapsed = $end - $start;
- $memory = $entry[5] - $entry[3];
-
- if ($fname == '-overhead-total') {
- $overheadTotal[] = $elapsed;
- $overheadMemory[] = $memory;
- }
- elseif ($fname == '-overhead-internal') {
- $overheadInternal[] = $elapsed;
- }
- }
- $overheadTotal = array_sum($overheadTotal) / count($overheadInternal);
- $overheadMemory = array_sum($overheadMemory) / count($overheadInternal);
- $overheadInternal = array_sum($overheadInternal) / count($overheadInternal);
-
- # Collate
- foreach ($this->mStack as $index => $entry) {
- $fname = $entry[0];
- $start = $entry[2];
- $end = $entry[4];
- $elapsed = $end - $start;
-
- $memory = $entry[5] - $entry[3];
- $subcalls = $this->calltreeCount($this->mStack, $index);
-
- if (!preg_match('/^-overhead/', $fname)) {
- # Adjust for profiling overhead (except special values with elapsed=0
- if ( $elapsed ) {
- $elapsed -= $overheadInternal;
- $elapsed -= ($subcalls * $overheadTotal);
- $memory -= ($subcalls * $overheadMemory);
- }
- }
-
- if (!array_key_exists($fname, $this->mCollated)) {
- $this->mCollated[$fname] = 0;
- $this->mCalls[$fname] = 0;
- $this->mMemory[$fname] = 0;
- $this->mMin[$fname] = 1 << 24;
- $this->mMax[$fname] = 0;
- $this->mOverhead[$fname] = 0;
- }
-
- $this->mCollated[$fname] += $elapsed;
- $this->mCalls[$fname]++;
- $this->mMemory[$fname] += $memory;
- $this->mMin[$fname] = min($this->mMin[$fname], $elapsed);
- $this->mMax[$fname] = max($this->mMax[$fname], $elapsed);
- $this->mOverhead[$fname] += $subcalls;
- }
-
- $total = @ $this->mCollated['-total'];
- $this->mCalls['-overhead-total'] = $profileCount;
-
- # Output
- arsort($this->mCollated, SORT_NUMERIC);
- foreach ($this->mCollated as $fname => $elapsed) {
- $calls = $this->mCalls[$fname];
- $percent = $total ? 100. * $elapsed / $total : 0;
- $memory = $this->mMemory[$fname];
- $prof .= sprintf($format, substr($fname, 0, $nameWidth), $calls, (float) ($elapsed * 1000), (float) ($elapsed * 1000) / $calls, $percent, $memory, ($this->mMin[$fname] * 1000.0), ($this->mMax[$fname] * 1000.0), $this->mOverhead[$fname]);
-
- global $wgProfileToDatabase;
- if ($wgProfileToDatabase) {
- Profiler :: logToDB($fname, (float) ($elapsed * 1000), $calls);
- }
- }
- $prof .= "\nTotal: $total\n\n";
-
- return $prof;
- }
-
- /**
- * Counts the number of profiled function calls sitting under
- * the given point in the call graph. Not the most efficient algo.
- *
- * @param $stack Array:
- * @param $start Integer:
- * @return Integer
- * @private
- */
- function calltreeCount($stack, $start) {
- $level = $stack[$start][1];
- $count = 0;
- for ($i = $start -1; $i >= 0 && $stack[$i][1] > $level; $i --) {
- $count ++;
- }
- return $count;
- }
-
- /**
- * @static
- */
- function logToDB($name, $timeSum, $eventCount) {
- # Do not log anything if database is readonly (bug 5375)
- if( wfReadOnly() ) { return; }
-
- # Warning: $wguname is a live patch, it should be moved to Setup.php
- global $wguname, $wgProfilePerHost;
-
- $fname = 'Profiler::logToDB';
- $dbw = wfGetDB(DB_MASTER);
- if (!is_object($dbw))
- return false;
- $errorState = $dbw->ignoreErrors( true );
- $profiling = $dbw->tableName('profiling');
-
- $name = substr($name, 0, 255);
- $encname = $dbw->strencode($name);
-
- if ($wgProfilePerHost) {
- $pfhost = $wguname['nodename'];
- } else {
- $pfhost = '';
- }
-
- $sql = "UPDATE $profiling "."SET pf_count=pf_count+{$eventCount}, "."pf_time=pf_time + {$timeSum} ".
- "WHERE pf_name='{$encname}' AND pf_server='{$pfhost}'";
- $dbw->query($sql);
-
- $rc = $dbw->affectedRows();
- if ($rc == 0) {
- $dbw->insert('profiling', array ('pf_name' => $name, 'pf_count' => $eventCount,
- 'pf_time' => $timeSum, 'pf_server' => $pfhost ), $fname, array ('IGNORE'));
- }
- // When we upgrade to mysql 4.1, the insert+update
- // can be merged into just a insert with this construct added:
- // "ON DUPLICATE KEY UPDATE ".
- // "pf_count=pf_count + VALUES(pf_count), ".
- // "pf_time=pf_time + VALUES(pf_time)";
- $dbw->ignoreErrors( $errorState );
- }
-
- /**
- * Get the function name of the current profiling section
- */
- function getCurrentSection() {
- $elt = end($this->mWorkStack);
- return $elt[0];
- }
-
- static function getCaller( $level ) {
- $backtrace = wfDebugBacktrace();
- if ( isset( $backtrace[$level] ) ) {
- if ( isset( $backtrace[$level]['class'] ) ) {
- $caller = $backtrace[$level]['class'] . '::' . $backtrace[$level]['function'];
- } else {
- $caller = $backtrace[$level]['function'];
- }
- } else {
- $caller = 'unknown';
- }
- return $caller;
- }
-
-}
-
-
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