| // Copyright 2013 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| Array.prototype.top = function() { |
| if (this.length == 0) return undefined; |
| return this[this.length - 1]; |
| } |
| |
| |
| function PlotScriptComposer(kResX, kResY, error_output) { |
| // Constants. |
| var kV8BinarySuffixes = ["/d8", "/libv8.so"]; |
| var kStackFrames = 8; // Stack frames to display in the plot. |
| |
| var kTimerEventWidth = 0.33; // Width of each timeline. |
| var kExecutionFrameWidth = 0.2; // Width of the top stack frame line. |
| var kStackFrameWidth = 0.1; // Width of the lower stack frame lines. |
| var kGapWidth = 0.05; // Gap between stack frame lines. |
| |
| var kY1Offset = 11; // Offset for stack frame vs. event lines. |
| var kDeoptRow = 7; // Row displaying deopts. |
| var kGetTimeHeight = 0.5; // Height of marker displaying timed part. |
| var kMaxDeoptLength = 4; // Draw size of the largest deopt. |
| var kPauseLabelPadding = 5; // Padding for pause time labels. |
| var kNumPauseLabels = 7; // Number of biggest pauses to label. |
| var kCodeKindLabelPadding = 100; // Padding for code kind labels. |
| |
| var kTickHalfDuration = 0.5; // Duration of half a tick in ms. |
| var kMinRangeLength = 0.0005; // Minimum length for an event in ms. |
| |
| var kNumThreads = 2; // Number of threads. |
| var kExecutionThreadId = 0; // ID of main thread. |
| |
| // Init values. |
| var num_timer_event = kY1Offset + 0.5; |
| |
| // Data structures. |
| function TimerEvent(label, color, pause, thread_id) { |
| assert(thread_id >= 0 && thread_id < kNumThreads, "invalid thread id"); |
| this.label = label; |
| this.color = color; |
| this.pause = pause; |
| this.ranges = []; |
| this.thread_id = thread_id; |
| this.index = ++num_timer_event; |
| } |
| |
| function CodeKind(color, kinds) { |
| this.color = color; |
| this.in_execution = []; |
| this.stack_frames = []; |
| for (var i = 0; i < kStackFrames; i++) this.stack_frames.push([]); |
| this.kinds = kinds; |
| } |
| |
| function Range(start, end) { |
| this.start = start; // In milliseconds. |
| this.end = end; // In milliseconds. |
| } |
| |
| function Deopt(time, size) { |
| this.time = time; // In milliseconds. |
| this.size = size; // In bytes. |
| } |
| |
| Range.prototype.duration = function() { return this.end - this.start; } |
| |
| function Tick(tick) { |
| this.tick = tick; |
| } |
| |
| var TimerEvents = { |
| 'V8.Execute': |
| new TimerEvent("execution", "#000000", false, 0), |
| 'V8.External': |
| new TimerEvent("external", "#3399FF", false, 0), |
| 'V8.CompileFullCode': |
| new TimerEvent("compile unopt", "#CC0000", true, 0), |
| 'V8.RecompileSynchronous': |
| new TimerEvent("recompile sync", "#CC0044", true, 0), |
| 'V8.RecompileConcurrent': |
| new TimerEvent("recompile async", "#CC4499", false, 1), |
| 'V8.CompileEvalMicroSeconds': |
| new TimerEvent("compile eval", "#CC4400", true, 0), |
| 'V8.ParseMicroSeconds': |
| new TimerEvent("parse", "#00CC00", true, 0), |
| 'V8.PreParseMicroSeconds': |
| new TimerEvent("preparse", "#44CC00", true, 0), |
| 'V8.ParseLazyMicroSeconds': |
| new TimerEvent("lazy parse", "#00CC44", true, 0), |
| 'V8.GCScavenger': |
| new TimerEvent("gc scavenge", "#0044CC", true, 0), |
| 'V8.GCCompactor': |
| new TimerEvent("gc compaction", "#4444CC", true, 0), |
| 'V8.GCContext': |
| new TimerEvent("gc context", "#4400CC", true, 0), |
| }; |
| |
| var CodeKinds = { |
| 'external ': new CodeKind("#3399FF", [-2]), |
| 'runtime ': new CodeKind("#000000", [-1]), |
| 'full code': new CodeKind("#DD0000", [0]), |
| 'opt code ': new CodeKind("#00EE00", [1]), |
| 'code stub': new CodeKind("#FF00FF", [2]), |
| 'built-in ': new CodeKind("#AA00AA", [3]), |
| 'inl.cache': new CodeKind("#4444AA", |
| [4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]), |
| 'reg.exp. ': new CodeKind("#0000FF", [15]), |
| }; |
| |
| var code_map = new CodeMap(); |
| var execution_pauses = []; |
| var deopts = []; |
| var gettime = []; |
| var event_stack = []; |
| var last_time_stamp = []; |
| for (var i = 0; i < kNumThreads; i++) { |
| event_stack[i] = []; |
| last_time_stamp[i] = -1; |
| } |
| |
| var range_start = undefined; |
| var range_end = undefined; |
| var obj_index = 0; |
| var pause_tolerance = 0.005; // Milliseconds. |
| var distortion = 0; |
| |
| // Utility functions. |
| function assert(something, message) { |
| if (!something) { |
| var error = new Error(message); |
| error_output(error.stack); |
| } |
| } |
| |
| function FindCodeKind(kind) { |
| for (name in CodeKinds) { |
| if (CodeKinds[name].kinds.indexOf(kind) >= 0) { |
| return CodeKinds[name]; |
| } |
| } |
| } |
| |
| function TicksToRanges(ticks) { |
| var ranges = []; |
| for (var i = 0; i < ticks.length; i++) { |
| var tick = ticks[i].tick; |
| ranges.push( |
| new Range(tick - kTickHalfDuration, tick + kTickHalfDuration)); |
| } |
| return ranges; |
| } |
| |
| function MergeRanges(ranges) { |
| ranges.sort(function(a, b) { return a.start - b.start; }); |
| var result = []; |
| var j = 0; |
| for (var i = 0; i < ranges.length; i = j) { |
| var merge_start = ranges[i].start; |
| if (merge_start > range_end) break; // Out of plot range. |
| var merge_end = ranges[i].end; |
| for (j = i + 1; j < ranges.length; j++) { |
| var next_range = ranges[j]; |
| // Don't merge ranges if there is no overlap (incl. merge tolerance). |
| if (next_range.start > merge_end + pause_tolerance) break; |
| // Merge ranges. |
| if (next_range.end > merge_end) { // Extend range end. |
| merge_end = next_range.end; |
| } |
| } |
| if (merge_end < range_start) continue; // Out of plot range. |
| if (merge_end < merge_start) continue; // Not an actual range. |
| result.push(new Range(merge_start, merge_end)); |
| } |
| return result; |
| } |
| |
| function RestrictRangesTo(ranges, start, end) { |
| var result = []; |
| for (var i = 0; i < ranges.length; i++) { |
| if (ranges[i].start <= end && ranges[i].end >= start) { |
| result.push(new Range(Math.max(ranges[i].start, start), |
| Math.min(ranges[i].end, end))); |
| } |
| } |
| return result; |
| } |
| |
| // Public methods. |
| this.collectData = function(input, distortion_per_entry) { |
| |
| var last_timestamp = 0; |
| |
| // Parse functions. |
| var parseTimeStamp = function(timestamp) { |
| int_timestamp = parseInt(timestamp); |
| assert(int_timestamp >= last_timestamp, "Inconsistent timestamps."); |
| last_timestamp = int_timestamp; |
| distortion += distortion_per_entry; |
| return int_timestamp / 1000 - distortion; |
| } |
| |
| var processTimerEventStart = function(name, start) { |
| // Find out the thread id. |
| var new_event = TimerEvents[name]; |
| if (new_event === undefined) return; |
| var thread_id = new_event.thread_id; |
| |
| start = Math.max(last_time_stamp[thread_id] + kMinRangeLength, start); |
| |
| // Last event on this thread is done with the start of this event. |
| var last_event = event_stack[thread_id].top(); |
| if (last_event !== undefined) { |
| var new_range = new Range(last_time_stamp[thread_id], start); |
| last_event.ranges.push(new_range); |
| } |
| event_stack[thread_id].push(new_event); |
| last_time_stamp[thread_id] = start; |
| }; |
| |
| var processTimerEventEnd = function(name, end) { |
| // Find out about the thread_id. |
| var finished_event = TimerEvents[name]; |
| var thread_id = finished_event.thread_id; |
| assert(finished_event === event_stack[thread_id].pop(), |
| "inconsistent event stack"); |
| |
| end = Math.max(last_time_stamp[thread_id] + kMinRangeLength, end); |
| |
| var new_range = new Range(last_time_stamp[thread_id], end); |
| finished_event.ranges.push(new_range); |
| last_time_stamp[thread_id] = end; |
| }; |
| |
| var processCodeCreateEvent = function(type, kind, address, size, name) { |
| var code_entry = new CodeMap.CodeEntry(size, name); |
| code_entry.kind = kind; |
| code_map.addCode(address, code_entry); |
| }; |
| |
| var processCodeMoveEvent = function(from, to) { |
| code_map.moveCode(from, to); |
| }; |
| |
| var processCodeDeleteEvent = function(address) { |
| code_map.deleteCode(address); |
| }; |
| |
| var processCodeDeoptEvent = function(time, size) { |
| deopts.push(new Deopt(time, size)); |
| } |
| |
| var processCurrentTimeEvent = function(time) { |
| gettime.push(time); |
| } |
| |
| var processSharedLibrary = function(name, start, end) { |
| var code_entry = new CodeMap.CodeEntry(end - start, name); |
| code_entry.kind = -3; // External code kind. |
| for (var i = 0; i < kV8BinarySuffixes.length; i++) { |
| var suffix = kV8BinarySuffixes[i]; |
| if (name.indexOf(suffix, name.length - suffix.length) >= 0) { |
| code_entry.kind = -1; // V8 runtime code kind. |
| break; |
| } |
| } |
| code_map.addLibrary(start, code_entry); |
| }; |
| |
| var processTickEvent = function( |
| pc, timer, unused_x, unused_y, vmstate, stack) { |
| var tick = new Tick(timer); |
| |
| var entry = code_map.findEntry(pc); |
| if (entry) FindCodeKind(entry.kind).in_execution.push(tick); |
| |
| for (var i = 0; i < kStackFrames; i++) { |
| if (!stack[i]) break; |
| var entry = code_map.findEntry(stack[i]); |
| if (entry) FindCodeKind(entry.kind).stack_frames[i].push(tick); |
| } |
| }; |
| // Collect data from log. |
| var logreader = new LogReader( |
| { 'timer-event-start': { parsers: [null, parseTimeStamp], |
| processor: processTimerEventStart }, |
| 'timer-event-end': { parsers: [null, parseTimeStamp], |
| processor: processTimerEventEnd }, |
| 'shared-library': { parsers: [null, parseInt, parseInt], |
| processor: processSharedLibrary }, |
| 'code-creation': { parsers: [null, parseInt, parseInt, parseInt, null], |
| processor: processCodeCreateEvent }, |
| 'code-move': { parsers: [parseInt, parseInt], |
| processor: processCodeMoveEvent }, |
| 'code-delete': { parsers: [parseInt], |
| processor: processCodeDeleteEvent }, |
| 'code-deopt': { parsers: [parseTimeStamp, parseInt], |
| processor: processCodeDeoptEvent }, |
| 'current-time': { parsers: [parseTimeStamp], |
| processor: processCurrentTimeEvent }, |
| 'tick': { parsers: [parseInt, parseTimeStamp, |
| null, null, parseInt, 'var-args'], |
| processor: processTickEvent } |
| }); |
| |
| var line; |
| while (line = input()) { |
| for (var s of line.split("\n")) logreader.processLogLine(s); |
| } |
| |
| // Collect execution pauses. |
| for (name in TimerEvents) { |
| var event = TimerEvents[name]; |
| if (!event.pause) continue; |
| var ranges = event.ranges; |
| for (var j = 0; j < ranges.length; j++) execution_pauses.push(ranges[j]); |
| } |
| execution_pauses = MergeRanges(execution_pauses); |
| }; |
| |
| |
| this.findPlotRange = function( |
| range_start_override, range_end_override, result_callback) { |
| var start_found = (range_start_override || range_start_override == 0); |
| var end_found = (range_end_override || range_end_override == 0); |
| range_start = start_found ? range_start_override : Infinity; |
| range_end = end_found ? range_end_override : -Infinity; |
| |
| if (!start_found || !end_found) { |
| for (name in TimerEvents) { |
| var ranges = TimerEvents[name].ranges; |
| for (var i = 0; i < ranges.length; i++) { |
| if (ranges[i].start < range_start && !start_found) { |
| range_start = ranges[i].start; |
| } |
| if (ranges[i].end > range_end && !end_found) { |
| range_end = ranges[i].end; |
| } |
| } |
| } |
| |
| for (codekind in CodeKinds) { |
| var ticks = CodeKinds[codekind].in_execution; |
| for (var i = 0; i < ticks.length; i++) { |
| if (ticks[i].tick < range_start && !start_found) { |
| range_start = ticks[i].tick; |
| } |
| if (ticks[i].tick > range_end && !end_found) { |
| range_end = ticks[i].tick; |
| } |
| } |
| } |
| } |
| // Set pause tolerance to something appropriate for the plot resolution |
| // to make it easier for gnuplot. |
| pause_tolerance = (range_end - range_start) / kResX / 10; |
| |
| if (typeof result_callback === 'function') { |
| result_callback(range_start, range_end); |
| } |
| }; |
| |
| |
| this.assembleOutput = function(output) { |
| output("set yrange [0:" + (num_timer_event + 1) + "]"); |
| output("set xlabel \"execution time in ms\""); |
| output("set xrange [" + range_start + ":" + range_end + "]"); |
| output("set style fill pattern 2 bo 1"); |
| output("set style rect fs solid 1 noborder"); |
| output("set style line 1 lt 1 lw 1 lc rgb \"#000000\""); |
| output("set border 15 lw 0.2"); // Draw thin border box. |
| output("set style line 2 lt 1 lw 1 lc rgb \"#9944CC\""); |
| output("set xtics out nomirror"); |
| output("unset key"); |
| |
| function DrawBarBase(color, start, end, top, bottom, transparency) { |
| obj_index++; |
| command = "set object " + obj_index + " rect"; |
| command += " from " + start + ", " + top; |
| command += " to " + end + ", " + bottom; |
| command += " fc rgb \"" + color + "\""; |
| if (transparency) { |
| command += " fs transparent solid " + transparency; |
| } |
| output(command); |
| } |
| |
| function DrawBar(row, color, start, end, width) { |
| DrawBarBase(color, start, end, row + width, row - width); |
| } |
| |
| function DrawHalfBar(row, color, start, end, width) { |
| DrawBarBase(color, start, end, row, row - width); |
| } |
| |
| var percentages = {}; |
| var total = 0; |
| for (var name in TimerEvents) { |
| var event = TimerEvents[name]; |
| var ranges = RestrictRangesTo(event.ranges, range_start, range_end); |
| var sum = |
| ranges.map(function(range) { return range.duration(); }) |
| .reduce(function(a, b) { return a + b; }, 0); |
| percentages[name] = (sum / (range_end - range_start) * 100).toFixed(1); |
| } |
| |
| // Plot deopts. |
| deopts.sort(function(a, b) { return b.size - a.size; }); |
| var max_deopt_size = deopts.length > 0 ? deopts[0].size : Infinity; |
| |
| for (var i = 0; i < deopts.length; i++) { |
| var deopt = deopts[i]; |
| DrawHalfBar(kDeoptRow, "#9944CC", deopt.time, |
| deopt.time + 10 * pause_tolerance, |
| deopt.size / max_deopt_size * kMaxDeoptLength); |
| } |
| |
| // Plot current time polls. |
| if (gettime.length > 1) { |
| var start = gettime[0]; |
| var end = gettime.pop(); |
| DrawBarBase("#0000BB", start, end, kGetTimeHeight, 0, 0.2); |
| } |
| |
| // Name Y-axis. |
| var ytics = []; |
| for (name in TimerEvents) { |
| var index = TimerEvents[name].index; |
| var label = TimerEvents[name].label; |
| ytics.push('"' + label + ' (' + percentages[name] + '%%)" ' + index); |
| } |
| ytics.push('"code kind color coding" ' + kY1Offset); |
| ytics.push('"code kind in execution" ' + (kY1Offset - 1)); |
| ytics.push('"top ' + kStackFrames + ' js stack frames"' + ' ' + |
| (kY1Offset - 2)); |
| ytics.push('"pause times" 0'); |
| ytics.push('"max deopt size: ' + (max_deopt_size / 1024).toFixed(1) + |
| ' kB" ' + kDeoptRow); |
| output("set ytics out nomirror (" + ytics.join(', ') + ")"); |
| |
| // Plot timeline. |
| for (var name in TimerEvents) { |
| var event = TimerEvents[name]; |
| var ranges = MergeRanges(event.ranges); |
| for (var i = 0; i < ranges.length; i++) { |
| DrawBar(event.index, event.color, |
| ranges[i].start, ranges[i].end, |
| kTimerEventWidth); |
| } |
| } |
| |
| // Plot code kind gathered from ticks. |
| for (var name in CodeKinds) { |
| var code_kind = CodeKinds[name]; |
| var offset = kY1Offset - 1; |
| // Top most frame. |
| var row = MergeRanges(TicksToRanges(code_kind.in_execution)); |
| for (var j = 0; j < row.length; j++) { |
| DrawBar(offset, code_kind.color, |
| row[j].start, row[j].end, kExecutionFrameWidth); |
| } |
| offset = offset - 2 * kExecutionFrameWidth - kGapWidth; |
| // Javascript frames. |
| for (var i = 0; i < kStackFrames; i++) { |
| offset = offset - 2 * kStackFrameWidth - kGapWidth; |
| row = MergeRanges(TicksToRanges(code_kind.stack_frames[i])); |
| for (var j = 0; j < row.length; j++) { |
| DrawBar(offset, code_kind.color, |
| row[j].start, row[j].end, kStackFrameWidth); |
| } |
| } |
| } |
| |
| // Add labels as legend for code kind colors. |
| var padding = kCodeKindLabelPadding * (range_end - range_start) / kResX; |
| var label_x = range_start; |
| var label_y = kY1Offset; |
| for (var name in CodeKinds) { |
| label_x += padding; |
| output("set label \"" + name + "\" at " + label_x + "," + label_y + |
| " textcolor rgb \"" + CodeKinds[name].color + "\"" + |
| " font \"Helvetica,9'\""); |
| obj_index++; |
| } |
| |
| if (execution_pauses.length == 0) { |
| // Force plot and return without plotting execution pause impulses. |
| output("plot 1/0"); |
| return; |
| } |
| |
| // Label the longest pauses. |
| execution_pauses = |
| RestrictRangesTo(execution_pauses, range_start, range_end); |
| execution_pauses.sort( |
| function(a, b) { return b.duration() - a.duration(); }); |
| |
| var max_pause_time = execution_pauses.length > 0 |
| ? execution_pauses[0].duration() : 0; |
| padding = kPauseLabelPadding * (range_end - range_start) / kResX; |
| var y_scale = kY1Offset / max_pause_time / 2; |
| for (var i = 0; i < execution_pauses.length && i < kNumPauseLabels; i++) { |
| var pause = execution_pauses[i]; |
| var label_content = (pause.duration() | 0) + " ms"; |
| var label_x = pause.end + padding; |
| var label_y = Math.max(1, (pause.duration() * y_scale)); |
| output("set label \"" + label_content + "\" at " + |
| label_x + "," + label_y + " font \"Helvetica,7'\""); |
| obj_index++; |
| } |
| |
| // Scale second Y-axis appropriately. |
| var y2range = max_pause_time * num_timer_event / kY1Offset * 2; |
| output("set y2range [0:" + y2range + "]"); |
| // Plot graph with impulses as data set. |
| output("plot '-' using 1:2 axes x1y2 with impulses ls 1"); |
| for (var i = 0; i < execution_pauses.length; i++) { |
| var pause = execution_pauses[i]; |
| output(pause.end + " " + pause.duration()); |
| obj_index++; |
| } |
| output("e"); |
| return obj_index; |
| }; |
| } |
