Add option to limit tick processor to a time range.

R=jkummerow@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/12077043

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13541 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/mjsunit/tools/tickprocessor.js

@@ -380,7 +380,10 @@ function driveTickProcessorTest(
                              separateIc,
                              TickProcessor.CALL_GRAPH_SIZE,
                              ignoreUnknown,
-                             stateFilter);
+                             stateFilter,
+                             undefined,
+                             "0",
+                             "auto,auto");
   var pm = new PrintMonitor(testsPath + refOutput);
   tp.processLogFileInTest(testsPath + logInput);
   tp.printStatistics();

tools/plot-timer-events

@@ -32,9 +32,7 @@ if [ ! -x "$d8_exec" ]; then
   exit 1
 fi
 
-if [ -n "$DISTORTION" ]; then
-  distortion=$DISTORTION
-else
+if [[ "$@" != *--distortion* ]]; then
   # Try to find out how much the instrumentation overhead is.
   calibration_log=calibration.log
   calibration_script="for (var i = 0; i < 1000000; i++) print();"
@@ -58,21 +56,15 @@ else
   rm $calibration_log
 
   # Overhead in picoseconds.
-  distortion=`echo "1000*(($t_1_end - $t_1_start) - ($t_2_end - $t_2_start)) \
-                    / ($n_1 - $n_2)" | bc`
+  options=--distortion=
+  options+=`echo "1000*(($t_1_end - $t_1_start) - ($t_2_end - $t_2_start)) \
+              / ($n_1 - $n_2)" | bc`
+  echo $options
 fi
 
-if [ -n "$PLOT_RANGE" ]; then
-  plot_range=$PLOT_RANGE
-else
-  plot_range=auto,auto
-fi
-
-echo "DISTORTION=$distortion"
-echo "PLOT_RANGE=$plot_range"
-
 echo -e "plot-range,$plot_range\ndistortion,$distortion" | cat - $log_file |
-    $d8_exec $tools_path/csvparser.js \
-    $tools_path/splaytree.js $tools_path/codemap.js \
-    $tools_path/logreader.js $tools_path/plot-timer-events.js \
+    $d8_exec $tools_path/csvparser.js $tools_path/splaytree.js \
+    $tools_path/codemap.js $tools_path/profile.js $tools_path/profile_view.js \
+    $tools_path/logreader.js $tools_path/tickprocessor.js \
+    $tools_path/plot-timer-events.js -- $options $@ | less \
     2>/dev/null | gnuplot > timer-events.png

tools/plot-timer-events.js

@@ -232,17 +232,6 @@ function ProcessTickEvent(pc, sp, timer, unused_x, unused_y, vmstate, stack) {
 }
 
 
-function ProcessDistortion(distortion_in_picoseconds) {
-  distortion_per_entry = distortion_in_picoseconds / 1000000;
-}
-
-
-function ProcessPlotRange(start, end) {
-  xrange_start_override = start;
-  xrange_end_override = end;
-}
-
-
 function FindPlotRange() {
   var start_found = (xrange_start_override || xrange_start_override == 0);
   var end_found = (xrange_end_override || xrange_end_override == 0);
@@ -287,6 +276,26 @@ function parseTimeStamp(timestamp) {
 }
 
 
+function ParseArguments(args) {
+  var processor = new ArgumentsProcessor(args);
+  do {
+    if (!processor.parse()) break;
+    var result = processor.result();
+    var distortion = parseInt(result.distortion);
+    if (isNaN(distortion)) break;
+    // Convert picoseconds to milliseconds.
+    distortion_per_entry = distortion / 1000000;
+    var rangelimits = result.range.split(",");
+    var range_start = parseInt(rangelimits[0]);
+    var range_end = parseInt(rangelimits[1]);
+    xrange_start_override = isNaN(range_start) ? undefined : range_start;
+    xrange_end_override = isNaN(range_end) ? undefined : range_end;
+    return;
+  } while (false);
+  processor.printUsageAndExit();
+}
+
+
 function CollectData() {
   // Collect data from log.
   var logreader = new LogReader(
@@ -304,11 +313,7 @@ function CollectData() {
                           processor: ProcessCodeDeleteEvent },
       'tick':           { parsers: [parseInt, parseInt, parseTimeStamp,
                                     null, null, parseInt, 'var-args'],
-                          processor: ProcessTickEvent },
-      'distortion':     { parsers: [parseInt],
-                          processor: ProcessDistortion },
-      'plot-range':     { parsers: [parseInt, parseInt],
-                          processor: ProcessPlotRange },
+                          processor: ProcessTickEvent }
     });
 
   var line;
@@ -385,8 +390,6 @@ function RestrictRangesTo(ranges, start, end) {
 
 
 function GnuplotOutput() {
-  FindPlotRange();
-
   print("set terminal pngcairo size " + kResX + "," + kResY +
         " enhanced font 'Helvetica,10'");
   print("set yrange [0:" + (num_timer_event + 1) + "]");
@@ -501,5 +504,7 @@ function GnuplotOutput() {
 }
 
 
+ParseArguments(arguments);
 CollectData();
+FindPlotRange();
 GnuplotOutput();

tools/tickprocessor-driver.js

@@ -55,6 +55,8 @@ var tickProcessor = new TickProcessor(
   params.callGraphSize,
   params.ignoreUnknown,
   params.stateFilter,
-  snapshotLogProcessor);
+  snapshotLogProcessor,
+  params.distortion,
+  params.range);
 tickProcessor.processLogFile(params.logFileName);
 tickProcessor.printStatistics();

tools/tickprocessor.js

@@ -151,7 +151,9 @@ function TickProcessor(
     callGraphSize,
     ignoreUnknown,
     stateFilter,
-    snapshotLogProcessor) {
+    snapshotLogProcessor,
+    distortion,
+    range) {
   LogReader.call(this, {
       'shared-library': { parsers: [null, parseInt, parseInt],
           processor: this.processSharedLibrary },
@@ -174,6 +176,10 @@ function TickProcessor(
           processor: this.processHeapSampleBegin },
       'heap-sample-end': { parsers: [null, null],
           processor: this.processHeapSampleEnd },
+      'timer-event-start' : { parsers: [null, null, null],
+                              processor: this.advanceDistortion },
+      'timer-event-end' : { parsers: [null, null, null],
+                            processor: this.advanceDistortion },
       // Ignored events.
       'profiler': null,
       'function-creation': null,
@@ -194,6 +200,17 @@ function TickProcessor(
   var ticks = this.ticks_ =
     { total: 0, unaccounted: 0, excluded: 0, gc: 0 };
 
+  distortion = parseInt(distortion);
+  // Convert picoseconds to nanoseconds.
+  this.distortion_per_entry = isNaN(distortion) ? 0 : (distortion / 1000);
+  this.distortion = 0;
+  var rangelimits = range.split(",");
+  var range_start = parseInt(rangelimits[0]);
+  var range_end = parseInt(rangelimits[1]);
+  // Convert milliseconds to nanoseconds.
+  this.range_start = isNaN(range_start) ? -Infinity : (range_start * 1000);
+  this.range_end = isNaN(range_end) ? Infinity : (range_end * 1000)
+
   V8Profile.prototype.handleUnknownCode = function(
       operation, addr, opt_stackPos) {
     var op = Profile.Operation;
@@ -355,6 +372,11 @@ TickProcessor.prototype.processTick = function(pc,
                                                tos_or_external_callback,
                                                vmState,
                                                stack) {
+  this.distortion += this.distortion_per_entry;
+  ns_since_start -= this.distortion;
+  if (ns_since_start < this.range_start || ns_since_start > this.range_end) {
+    return;
+  }
   this.ticks_.total++;
   if (vmState == TickProcessor.VmStates.GC) this.ticks_.gc++;
   if (!this.includeTick(vmState)) {
@@ -381,6 +403,11 @@ TickProcessor.prototype.processTick = function(pc,
 };
 
 
+TickProcessor.prototype.advanceDistortion = function() {
+  this.distortion += this.distortion_per_entry;
+}
+
+
 TickProcessor.prototype.processHeapSampleBegin = function(space, state, ticks) {
   if (space != 'Heap') return;
   this.currentProducerProfile_ = new CallTree();
@@ -795,7 +822,11 @@ function ArgumentsProcessor(args) {
     '--target': ['targetRootFS', '',
         'Specify the target root directory for cross environment'],
     '--snapshot-log': ['snapshotLogFileName', 'snapshot.log',
-        'Specify snapshot log file to use (e.g. --snapshot-log=snapshot.log)']
+        'Specify snapshot log file to use (e.g. --snapshot-log=snapshot.log)'],
+    '--range': ['range', 'auto,auto',
+                'Specify the range limit as [start],[end]'],
+    '--distortion': ['distortion', 0,
+                     'Specify the logging overhead in picoseconds']
   };
   this.argsDispatch_['--js'] = this.argsDispatch_['-j'];
   this.argsDispatch_['--gc'] = this.argsDispatch_['-g'];
@@ -814,7 +845,9 @@ ArgumentsProcessor.DEFAULTS = {
   ignoreUnknown: false,
   separateIc: false,
   targetRootFS: '',
-  nm: 'nm'
+  nm: 'nm',
+  range: 'auto,auto',
+  distortion: 0
 };