diff options
author | Pierre Schmitz <pierre@archlinux.de> | 2011-12-03 13:29:22 +0100 |
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committer | Pierre Schmitz <pierre@archlinux.de> | 2011-12-03 13:29:22 +0100 |
commit | ca32f08966f1b51fcb19460f0996bb0c4048e6fe (patch) | |
tree | ec04cc15b867bc21eedca904cea9af0254531a11 /includes/Profiler.php | |
parent | a22fbfc60f36f5f7ee10d5ae6fe347340c2ee67c (diff) |
Update to MediaWiki 1.18.0
* also update ArchLinux skin to chagnes in MonoBook
* Use only css to hide our menu bar when printing
Diffstat (limited to 'includes/Profiler.php')
-rw-r--r-- | includes/Profiler.php | 463 |
1 files changed, 0 insertions, 463 deletions
diff --git a/includes/Profiler.php b/includes/Profiler.php deleted file mode 100644 index 6deb742e..00000000 --- a/includes/Profiler.php +++ /dev/null @@ -1,463 +0,0 @@ -<?php -/** - * @defgroup Profiler Profiler - * - * @file - * @ingroup Profiler - * This file is only included if profiling is enabled - */ - -/** backward compatibility */ -$wgProfiling = true; - -/** - * Begin profiling of a function - * @param $functionname String: name of the function we will profile - */ -function wfProfileIn( $functionname ) { - global $wgProfiler; - $wgProfiler->profileIn( $functionname ); -} - -/** - * Stop profiling of a function - * @param $functionname String: name of the function we have profiled - */ -function wfProfileOut( $functionname = 'missing' ) { - global $wgProfiler; - $wgProfiler->profileOut( $functionname ); -} - -/** - * Returns a profiling output to be stored in debug file - * - * @param $start Float - * @param $elapsed Float: time elapsed since the beginning of the request - */ -function wfGetProfilingOutput( $start, $elapsed ) { - global $wgProfiler; - return $wgProfiler->getOutput( $start, $elapsed ); -} - -/** - * Close opened profiling sections - */ -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; - } -} - -/** - * @ingroup Profiler - * @todo document - */ -class Profiler { - var $mStack = array (), $mWorkStack = array (), $mCollated = array (); - var $mCalls = array (), $mTotals = array (); - var $mTemplated = false; - - 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' ); - } - } - - /** - * Called by wfProfieIn() - * - * @param $functionname String - */ - function profileIn( $functionname ) { - global $wgDebugFunctionEntry, $wgProfiling; - if( !$wgProfiling ) return; - if( $wgDebugFunctionEntry ){ - $this->debug( str_repeat( ' ', count( $this->mWorkStack ) ) . 'Entering ' . $functionname . "\n" ); - } - - $this->mWorkStack[] = array( $functionname, count( $this->mWorkStack ), $this->getTime(), memory_get_usage() ); - } - - /** - * Called by wfProfieOut() - * - * @param $functionname String - */ - function profileOut($functionname) { - global $wgDebugFunctionEntry, $wgProfiling; - if( !$wgProfiling ) return; - $memory = memory_get_usage(); - $time = $this->getTime(); - - if( $wgDebugFunctionEntry ){ - $this->debug( str_repeat( ' ', count( $this->mWorkStack ) - 1 ) . 'Exiting ' . $functionname . "\n" ); - } - - $bit = array_pop($this->mWorkStack); - - if (!$bit) { - $this->debug("Profiling error, !\$bit: $functionname\n"); - } else { - //if( $wgDebugProfiling ){ - if( $functionname == 'close' ){ - $message = "Profile section ended by close(): {$bit[0]}"; - $this->debug( "$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)"; - $this->debug( "$message\n" ); - $this->mStack[] = array( $message, 0, '0 0', 0, '0 0', 0 ); - } - //} - $bit[] = $time; - $bit[] = $memory; - $this->mStack[] = $bit; - } - } - - /** - * called by wfProfileClose() - */ - function close() { - global $wgProfiling; - - # Avoid infinite loop - if( !$wgProfiling ) - return; - - while( count( $this->mWorkStack ) ){ - $this->profileOut( 'close' ); - } - } - - /** - * Mark this call as templated or not - * - * @param $t Boolean - */ - function setTemplated( $t ) { - $this->mTemplated = $t; - } - - /** - * Called by wfGetProfilingOutput() - */ - function getOutput() { - global $wgDebugFunctionEntry, $wgProfileCallTree; - $wgDebugFunctionEntry = false; - - if( !count( $this->mStack ) && !count( $this->mCollated ) ){ - return "No profiling output\n"; - } - $this->close(); - - if( $wgProfileCallTree ) { - global $wgProfileToDatabase; - # XXX: We must call $this->getFunctionReport() to log to the DB - if( $wgProfileToDatabase ) { - $this->getFunctionReport(); - } - return $this->getCallTree(); - } else { - return $this->getFunctionReport(); - } - } - - /** - * Returns a tree of function call instead of a list of functions - */ - function getCallTree() { - return implode( '', array_map( array( &$this, 'getCallTreeLine' ), $this->remapCallTree( $this->mStack ) ) ); - } - - /** - * Recursive function the format the current profiling array into a tree - * - * @param $stack profiling array - */ - 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; - } - - /** - * Callback to get a formatted line for the call tree - */ - 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; - } - - /** - * Returns a list of profiled functions. - * Also log it into the database if $wgProfileToDatabase is set to true. - */ - function getFunctionReport() { - global $wgProfileToDatabase; - - $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! - $overheadTotal = $overheadMemory = $overheadInternal = array(); - 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 = $overheadTotal ? array_sum( $overheadTotal ) / count( $overheadInternal ) : 0; - $overheadMemory = $overheadMemory ? array_sum( $overheadMemory ) / count( $overheadInternal ) : 0; - $overheadInternal = $overheadInternal ? array_sum( $overheadInternal ) / count( $overheadInternal ) : 0; - - # 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]); - # Log to the DB - if( $wgProfileToDatabase ) { - self::logToDB($fname, (float) ($elapsed * 1000), $calls, (float) ($memory) ); - } - } - $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; - } - - /** - * Log a function into the database. - * - * @param $name String: function name - * @param $timeSum Float - * @param $eventCount Integer: number of times that function was called - * @param $memorySum Integer: memory used by the function - */ - static function logToDB( $name, $timeSum, $eventCount, $memorySum ){ - # Do not log anything if database is readonly (bug 5375) - if( wfReadOnly() ) { return; } - - global $wgProfilePerHost; - - $dbw = wfGetDB( DB_MASTER ); - if( !is_object( $dbw ) ) - return false; - $errorState = $dbw->ignoreErrors( true ); - - $name = substr($name, 0, 255); - - if( $wgProfilePerHost ){ - $pfhost = wfHostname(); - } else { - $pfhost = ''; - } - - // Kludge - $timeSum = ($timeSum >= 0) ? $timeSum : 0; - $memorySum = ($memorySum >= 0) ? $memorySum : 0; - - $dbw->update( 'profiling', - array( - "pf_count=pf_count+{$eventCount}", - "pf_time=pf_time+{$timeSum}", - "pf_memory=pf_memory+{$memorySum}", - ), - array( - 'pf_name' => $name, - 'pf_server' => $pfhost, - ), - __METHOD__ ); - - - $rc = $dbw->affectedRows(); - if ($rc == 0) { - $dbw->insert('profiling', array ('pf_name' => $name, 'pf_count' => $eventCount, - 'pf_time' => $timeSum, 'pf_memory' => $memorySum, 'pf_server' => $pfhost ), - __METHOD__, 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]; - } - - /** - * Get function caller - * - * @param $level Integer - */ - 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; - } - - /** - * Add an entry in the debug log file - * - * @param $s String to output - */ - function debug( $s ) { - if( function_exists( 'wfDebug' ) ) { - wfDebug( $s ); - } - } -} |