1 files changed, 67 insertions, 0 deletions
diff --git a/includes/profiler/ProfilerSimpleTrace.php b/includes/profiler/ProfilerSimpleTrace.php
new file mode 100644
index 00000000..ba41babc
--- /dev/null
+++ b/includes/profiler/ProfilerSimpleTrace.php
@@ -0,0 +1,67 @@
+<?php
+/**
+ * @file
+ * @ingroup Profiler
+ */
+
+/**
+ * Execution trace
+ * @todo document methods (?)
+ * @ingroup Profiler
+ */
+class ProfilerSimpleTrace extends ProfilerSimple {
+	var $mMinimumTime = 0;
+	var $trace = "";
+	var $memory = 0;
+
+	function __construct( $params ) {
+		global $wgRequestTime, $wgRUstart;
+		parent::__construct( $params );
+		if ( !empty( $wgRequestTime ) && !empty( $wgRUstart ) ) {
+			$this->mWorkStack[] = array( '-total', 0, $wgRequestTime, $this->getCpuTime( $wgRUstart ) );
+		}
+		$this->trace .= "Beginning trace: \n";
+	}
+
+	function profileIn($functionname) {
+		$this->mWorkStack[] = array($functionname, count( $this->mWorkStack ), microtime(true), $this->getCpuTime());
+		$this->trace .= "         " . sprintf("%6.1f",$this->memoryDiff()) .
+				str_repeat( " ", count($this->mWorkStack)) . " > " . $functionname . "\n";
+	}
+
+	function profileOut($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 ) {
+				$this->trace .= "Profiling error: in({$ofname}), out($functionname)";
+			}
+			$elapsedreal = microtime( true ) - $ortime;
+			$this->trace .= sprintf( "%03.6f %6.1f", $elapsedreal, $this->memoryDiff() ) .
+					str_repeat(" ", count( $this->mWorkStack ) + 1 ) . " < " . $functionname . "\n";
+		}
+	}
+	
+	function memoryDiff() {
+		$diff = memory_get_usage() - $this->memory;
+		$this->memory = memory_get_usage();
+		return $diff / 1024;
+	}
+
+	function logData() {
+		print "<!-- \n {$this->trace} \n -->";
+	}
+}