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Issue 118673002: Add flag to control profiler rate (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Created 7 years ago
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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 // Print a summary of a profile trace. 5 // Print a summary of a profile trace.
6 6
7 import 'dart:convert'; 7 import 'dart:convert';
8 import 'dart:io'; 8 import 'dart:io';
9 9
10 class TraceSymbol { 10 class TraceSymbol {
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61 var symbol = _stack.last; 61 var symbol = _stack.last;
62 if (symbol.name != name) { 62 if (symbol.name != name) {
63 throw new StateError('$name not found at top of stack.'); 63 throw new StateError('$name not found at top of stack.');
64 } 64 }
65 if ((_stack.length > 1) && (_marked == false)) { 65 if ((_stack.length > 1) && (_marked == false)) {
66 // We are transitioning from the sequence of begins to the sequence 66 // We are transitioning from the sequence of begins to the sequence
67 // of ends. Mark the symbols on the stack. 67 // of ends. Mark the symbols on the stack.
68 _marked = true; 68 _marked = true;
69 _totalSamples++; 69 _totalSamples++;
70 // Mark all symbols except the top with an inclusive tick. 70 // Mark all symbols except the top with an inclusive tick.
71 for (int i = 1; i < _stack.length - 1; i++) { 71 for (int i = 1; i < _stack.length; i++) {
72 _stack[i].inclusive++; 72 _stack[i].inclusive++;
73 } 73 }
74 _stack.last.exclusive++; 74 _stack.last.exclusive++;
75 } 75 }
76 _stack.removeLast(); 76 _stack.removeLast();
77 } 77 }
78 78
79 void _processEvents(List events) { 79 void _processEvents(List events) {
80 for (var i = 0; i < events.length; i++) { 80 for (var i = 0; i < events.length; i++) {
81 Map event = events[i]; 81 Map event = events[i];
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154 return; 154 return;
155 } 155 }
156 String input = arguments[0]; 156 String input = arguments[0];
157 int numSymbols = 10; 157 int numSymbols = 10;
158 if (arguments.length >= 2) { 158 if (arguments.length >= 2) {
159 numSymbols = int.parse(arguments[1]); 159 numSymbols = int.parse(arguments[1]);
160 } 160 }
161 TraceSummary ts = new TraceSummary(numSymbols); 161 TraceSummary ts = new TraceSummary(numSymbols);
162 ts.summarize(input); 162 ts.summarize(input);
163 } 163 }
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