a handy development utility!

diff --git a/includes/ProfilerSimpleTrace.php b/includes/ProfilerSimpleTrace.php
new file mode 100644 (file)
index 0000000..fcd79ac
--- /dev/null
+++ b/includes/ProfilerSimpleTrace.php
@@ -0,0 +1,66 @@
+<?php
+/**
+ * @file
+ * @ingroup Profiler
+ */
+
+if ( !class_exists( 'ProfilerSimple' ) ) {
+       require_once(dirname(__FILE__).'/ProfilerSimple.php');
+}
+
+/**
+ * Execution trace
+ * @todo document methods (?)
+ * @ingroup Profiler
+ */
+class ProfilerSimpleTrace extends ProfilerSimple {
+       var $mMinimumTime = 0;
+       var $mProfileID = false;
+       var $trace = "";
+
+       function __construct() {
+               global $wgRequestTime, $wgRUstart;
+               if (!empty($wgRequestTime) && !empty($wgRUstart)) {
+                       $this->mWorkStack[] = array( '-total', 0, $wgRequestTime,$this->getCpuTime($wgRUstart));
+                       $elapsedcpu = $this->getCpuTime() - $this->getCpuTime($wgRUstart);
+                       $elapsedreal = microtime(true) - $wgRequestTime;
+               }
+               $this->trace .= "Beginning trace: \n";
+       }
+
+       function profileIn($functionname) {
+               global $wgDebugFunctionEntry;
+               $this->mWorkStack[] = array($functionname, count( $this->mWorkStack ), microtime(true), $this->getCpuTime());
+               $this->trace .= str_repeat( " ", count($this->mWorkStack) + 14) . " > " . $functionname . "\n";
+       }
+
+       function profileOut($functionname) {
+               global $wgDebugFunctionEntry;
+
+               if ($wgDebugFunctionEntry) {
+                       $this->debug(str_repeat(' ', count($this->mWorkStack) - 1).'Exiting '.$functionname."\n");
+               }
+
+               list($ofname, /* $ocount */ ,$ortime,$octime) = array_pop($this->mWorkStack);
+
+               if (!$ofname) {
+                       $this->trace .= "Profiling error: $functionname\n";
+               } else {
+                       if ($functionname == 'close') {
+                               $message = "Profile section ended by close(): {$ofname}";
+                               $functionname = $ofname;
+                               $this->trace .= $message . "\n";
+                       }
+                       elseif ($ofname != $functionname) {
+                               $self->trace .= "Profiling error: in({$ofname}), out($functionname)";
+                       }
+                       $elapsedcpu = $this->getCpuTime() - $octime;
+                       $elapsedreal = microtime(true) - $ortime;
+                       $this->trace .= sprintf("%03.6f      ",$elapsedreal) .  str_repeat(" ",count($this->mWorkStack)+1) . " < " . $functionname . "\n";
+               }
+       }
+
+       function getOutput() {
+               print "<!-- \n {$this->trace} \n -->";
+       }
+}