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6 |
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7 |
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8 |
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9 |
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10 | 'use strict';
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11 |
|
12 | if (process.env.NODE_ENV !== "production") {
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13 | (function() {
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14 | 'use strict';
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15 |
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16 | var enableSchedulerDebugging = false;
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17 | var enableProfiling = true;
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18 |
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19 | var requestHostCallback;
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20 | var requestHostTimeout;
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21 | var cancelHostTimeout;
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22 | var requestPaint;
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23 | var hasPerformanceNow = typeof performance === 'object' && typeof performance.now === 'function';
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24 |
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25 | if (hasPerformanceNow) {
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26 | var localPerformance = performance;
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27 |
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28 | exports.unstable_now = function () {
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29 | return localPerformance.now();
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30 | };
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31 | } else {
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32 | var localDate = Date;
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33 | var initialTime = localDate.now();
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34 |
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35 | exports.unstable_now = function () {
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36 | return localDate.now() - initialTime;
|
37 | };
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38 | }
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39 |
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40 | if (
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41 |
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42 | typeof window === 'undefined' ||
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43 | typeof MessageChannel !== 'function') {
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44 |
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45 |
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46 | var _callback = null;
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47 | var _timeoutID = null;
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48 |
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49 | var _flushCallback = function () {
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50 | if (_callback !== null) {
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51 | try {
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52 | var currentTime = exports.unstable_now();
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53 | var hasRemainingTime = true;
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54 |
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55 | _callback(hasRemainingTime, currentTime);
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56 |
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57 | _callback = null;
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58 | } catch (e) {
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59 | setTimeout(_flushCallback, 0);
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60 | throw e;
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61 | }
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62 | }
|
63 | };
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64 |
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65 | requestHostCallback = function (cb) {
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66 | if (_callback !== null) {
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67 |
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68 | setTimeout(requestHostCallback, 0, cb);
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69 | } else {
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70 | _callback = cb;
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71 | setTimeout(_flushCallback, 0);
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72 | }
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73 | };
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74 |
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75 | requestHostTimeout = function (cb, ms) {
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76 | _timeoutID = setTimeout(cb, ms);
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77 | };
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78 |
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79 | cancelHostTimeout = function () {
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80 | clearTimeout(_timeoutID);
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81 | };
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82 |
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83 | exports.unstable_shouldYield = function () {
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84 | return false;
|
85 | };
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86 |
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87 | requestPaint = exports.unstable_forceFrameRate = function () {};
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88 | } else {
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89 |
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90 | var _setTimeout = window.setTimeout;
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91 | var _clearTimeout = window.clearTimeout;
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92 |
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93 | if (typeof console !== 'undefined') {
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94 |
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95 |
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96 |
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97 | var requestAnimationFrame = window.requestAnimationFrame;
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98 | var cancelAnimationFrame = window.cancelAnimationFrame;
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99 |
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100 | if (typeof requestAnimationFrame !== 'function') {
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101 |
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102 | console['error']("This browser doesn't support requestAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://reactjs.org/link/react-polyfills');
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103 | }
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104 |
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105 | if (typeof cancelAnimationFrame !== 'function') {
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106 |
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107 | console['error']("This browser doesn't support cancelAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://reactjs.org/link/react-polyfills');
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108 | }
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109 | }
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110 |
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111 | var isMessageLoopRunning = false;
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112 | var scheduledHostCallback = null;
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113 | var taskTimeoutID = -1;
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114 |
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115 |
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116 |
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117 |
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118 | var yieldInterval = 5;
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119 | var deadline = 0;
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120 |
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121 | {
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122 |
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123 |
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124 | exports.unstable_shouldYield = function () {
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125 | return exports.unstable_now() >= deadline;
|
126 | };
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127 |
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128 |
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129 | requestPaint = function () {};
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130 | }
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131 |
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132 | exports.unstable_forceFrameRate = function (fps) {
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133 | if (fps < 0 || fps > 125) {
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134 |
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135 | console['error']('forceFrameRate takes a positive int between 0 and 125, ' + 'forcing frame rates higher than 125 fps is not supported');
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136 | return;
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137 | }
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138 |
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139 | if (fps > 0) {
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140 | yieldInterval = Math.floor(1000 / fps);
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141 | } else {
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142 |
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143 | yieldInterval = 5;
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144 | }
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145 | };
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146 |
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147 | var performWorkUntilDeadline = function () {
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148 | if (scheduledHostCallback !== null) {
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149 | var currentTime = exports.unstable_now();
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150 |
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151 |
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152 |
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153 | deadline = currentTime + yieldInterval;
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154 | var hasTimeRemaining = true;
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155 |
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156 | try {
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157 | var hasMoreWork = scheduledHostCallback(hasTimeRemaining, currentTime);
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158 |
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159 | if (!hasMoreWork) {
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160 | isMessageLoopRunning = false;
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161 | scheduledHostCallback = null;
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162 | } else {
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163 |
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164 |
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165 | port.postMessage(null);
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166 | }
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167 | } catch (error) {
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168 |
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169 |
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170 | port.postMessage(null);
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171 | throw error;
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172 | }
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173 | } else {
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174 | isMessageLoopRunning = false;
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175 | }
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176 | };
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177 |
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178 | var channel = new MessageChannel();
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179 | var port = channel.port2;
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180 | channel.port1.onmessage = performWorkUntilDeadline;
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181 |
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182 | requestHostCallback = function (callback) {
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183 | scheduledHostCallback = callback;
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184 |
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185 | if (!isMessageLoopRunning) {
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186 | isMessageLoopRunning = true;
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187 | port.postMessage(null);
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188 | }
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189 | };
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190 |
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191 | requestHostTimeout = function (callback, ms) {
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192 | taskTimeoutID = _setTimeout(function () {
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193 | callback(exports.unstable_now());
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194 | }, ms);
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195 | };
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196 |
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197 | cancelHostTimeout = function () {
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198 | _clearTimeout(taskTimeoutID);
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199 |
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200 | taskTimeoutID = -1;
|
201 | };
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202 | }
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203 |
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204 | function push(heap, node) {
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205 | var index = heap.length;
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206 | heap.push(node);
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207 | siftUp(heap, node, index);
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208 | }
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209 | function peek(heap) {
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210 | var first = heap[0];
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211 | return first === undefined ? null : first;
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212 | }
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213 | function pop(heap) {
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214 | var first = heap[0];
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215 |
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216 | if (first !== undefined) {
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217 | var last = heap.pop();
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218 |
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219 | if (last !== first) {
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220 | heap[0] = last;
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221 | siftDown(heap, last, 0);
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222 | }
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223 |
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224 | return first;
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225 | } else {
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226 | return null;
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227 | }
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228 | }
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229 |
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230 | function siftUp(heap, node, i) {
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231 | var index = i;
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232 |
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233 | while (true) {
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234 | var parentIndex = index - 1 >>> 1;
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235 | var parent = heap[parentIndex];
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236 |
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237 | if (parent !== undefined && compare(parent, node) > 0) {
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238 |
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239 | heap[parentIndex] = node;
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240 | heap[index] = parent;
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241 | index = parentIndex;
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242 | } else {
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243 |
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244 | return;
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245 | }
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246 | }
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247 | }
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248 |
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249 | function siftDown(heap, node, i) {
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250 | var index = i;
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251 | var length = heap.length;
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252 |
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253 | while (index < length) {
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254 | var leftIndex = (index + 1) * 2 - 1;
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255 | var left = heap[leftIndex];
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256 | var rightIndex = leftIndex + 1;
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257 | var right = heap[rightIndex];
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258 |
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259 | if (left !== undefined && compare(left, node) < 0) {
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260 | if (right !== undefined && compare(right, left) < 0) {
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261 | heap[index] = right;
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262 | heap[rightIndex] = node;
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263 | index = rightIndex;
|
264 | } else {
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265 | heap[index] = left;
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266 | heap[leftIndex] = node;
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267 | index = leftIndex;
|
268 | }
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269 | } else if (right !== undefined && compare(right, node) < 0) {
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270 | heap[index] = right;
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271 | heap[rightIndex] = node;
|
272 | index = rightIndex;
|
273 | } else {
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274 |
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275 | return;
|
276 | }
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277 | }
|
278 | }
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279 |
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280 | function compare(a, b) {
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281 |
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282 | var diff = a.sortIndex - b.sortIndex;
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283 | return diff !== 0 ? diff : a.id - b.id;
|
284 | }
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285 |
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286 |
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287 | var NoPriority = 0;
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288 | var ImmediatePriority = 1;
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289 | var UserBlockingPriority = 2;
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290 | var NormalPriority = 3;
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291 | var LowPriority = 4;
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292 | var IdlePriority = 5;
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293 |
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294 | var runIdCounter = 0;
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295 | var mainThreadIdCounter = 0;
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296 | var profilingStateSize = 4;
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297 | var sharedProfilingBuffer =
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298 | typeof SharedArrayBuffer === 'function' ? new SharedArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) :
|
299 | typeof ArrayBuffer === 'function' ? new ArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : null
|
300 | ;
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301 | var profilingState = sharedProfilingBuffer !== null ? new Int32Array(sharedProfilingBuffer) : [];
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302 |
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303 | var PRIORITY = 0;
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304 | var CURRENT_TASK_ID = 1;
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305 | var CURRENT_RUN_ID = 2;
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306 | var QUEUE_SIZE = 3;
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307 |
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308 | {
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309 | profilingState[PRIORITY] = NoPriority;
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310 |
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311 |
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312 | profilingState[QUEUE_SIZE] = 0;
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313 | profilingState[CURRENT_TASK_ID] = 0;
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314 | }
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315 |
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316 |
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317 | var INITIAL_EVENT_LOG_SIZE = 131072;
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318 | var MAX_EVENT_LOG_SIZE = 524288;
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319 |
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320 | var eventLogSize = 0;
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321 | var eventLogBuffer = null;
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322 | var eventLog = null;
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323 | var eventLogIndex = 0;
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324 | var TaskStartEvent = 1;
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325 | var TaskCompleteEvent = 2;
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326 | var TaskErrorEvent = 3;
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327 | var TaskCancelEvent = 4;
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328 | var TaskRunEvent = 5;
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329 | var TaskYieldEvent = 6;
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330 | var SchedulerSuspendEvent = 7;
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331 | var SchedulerResumeEvent = 8;
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332 |
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333 | function logEvent(entries) {
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334 | if (eventLog !== null) {
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335 | var offset = eventLogIndex;
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336 | eventLogIndex += entries.length;
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337 |
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338 | if (eventLogIndex + 1 > eventLogSize) {
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339 | eventLogSize *= 2;
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340 |
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341 | if (eventLogSize > MAX_EVENT_LOG_SIZE) {
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342 |
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343 | console['error']("Scheduler Profiling: Event log exceeded maximum size. Don't " + 'forget to call `stopLoggingProfilingEvents()`.');
|
344 | stopLoggingProfilingEvents();
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345 | return;
|
346 | }
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347 |
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348 | var newEventLog = new Int32Array(eventLogSize * 4);
|
349 | newEventLog.set(eventLog);
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350 | eventLogBuffer = newEventLog.buffer;
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351 | eventLog = newEventLog;
|
352 | }
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353 |
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354 | eventLog.set(entries, offset);
|
355 | }
|
356 | }
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357 |
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358 | function startLoggingProfilingEvents() {
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359 | eventLogSize = INITIAL_EVENT_LOG_SIZE;
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360 | eventLogBuffer = new ArrayBuffer(eventLogSize * 4);
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361 | eventLog = new Int32Array(eventLogBuffer);
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362 | eventLogIndex = 0;
|
363 | }
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364 | function stopLoggingProfilingEvents() {
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365 | var buffer = eventLogBuffer;
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366 | eventLogSize = 0;
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367 | eventLogBuffer = null;
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368 | eventLog = null;
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369 | eventLogIndex = 0;
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370 | return buffer;
|
371 | }
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372 | function markTaskStart(task, ms) {
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373 | {
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374 | profilingState[QUEUE_SIZE]++;
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375 |
|
376 | if (eventLog !== null) {
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377 |
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378 |
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379 |
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380 | logEvent([TaskStartEvent, ms * 1000, task.id, task.priorityLevel]);
|
381 | }
|
382 | }
|
383 | }
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384 | function markTaskCompleted(task, ms) {
|
385 | {
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386 | profilingState[PRIORITY] = NoPriority;
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387 | profilingState[CURRENT_TASK_ID] = 0;
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388 | profilingState[QUEUE_SIZE]--;
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389 |
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390 | if (eventLog !== null) {
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391 | logEvent([TaskCompleteEvent, ms * 1000, task.id]);
|
392 | }
|
393 | }
|
394 | }
|
395 | function markTaskCanceled(task, ms) {
|
396 | {
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397 | profilingState[QUEUE_SIZE]--;
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398 |
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399 | if (eventLog !== null) {
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400 | logEvent([TaskCancelEvent, ms * 1000, task.id]);
|
401 | }
|
402 | }
|
403 | }
|
404 | function markTaskErrored(task, ms) {
|
405 | {
|
406 | profilingState[PRIORITY] = NoPriority;
|
407 | profilingState[CURRENT_TASK_ID] = 0;
|
408 | profilingState[QUEUE_SIZE]--;
|
409 |
|
410 | if (eventLog !== null) {
|
411 | logEvent([TaskErrorEvent, ms * 1000, task.id]);
|
412 | }
|
413 | }
|
414 | }
|
415 | function markTaskRun(task, ms) {
|
416 | {
|
417 | runIdCounter++;
|
418 | profilingState[PRIORITY] = task.priorityLevel;
|
419 | profilingState[CURRENT_TASK_ID] = task.id;
|
420 | profilingState[CURRENT_RUN_ID] = runIdCounter;
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421 |
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422 | if (eventLog !== null) {
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423 | logEvent([TaskRunEvent, ms * 1000, task.id, runIdCounter]);
|
424 | }
|
425 | }
|
426 | }
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427 | function markTaskYield(task, ms) {
|
428 | {
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429 | profilingState[PRIORITY] = NoPriority;
|
430 | profilingState[CURRENT_TASK_ID] = 0;
|
431 | profilingState[CURRENT_RUN_ID] = 0;
|
432 |
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433 | if (eventLog !== null) {
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434 | logEvent([TaskYieldEvent, ms * 1000, task.id, runIdCounter]);
|
435 | }
|
436 | }
|
437 | }
|
438 | function markSchedulerSuspended(ms) {
|
439 | {
|
440 | mainThreadIdCounter++;
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441 |
|
442 | if (eventLog !== null) {
|
443 | logEvent([SchedulerSuspendEvent, ms * 1000, mainThreadIdCounter]);
|
444 | }
|
445 | }
|
446 | }
|
447 | function markSchedulerUnsuspended(ms) {
|
448 | {
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449 | if (eventLog !== null) {
|
450 | logEvent([SchedulerResumeEvent, ms * 1000, mainThreadIdCounter]);
|
451 | }
|
452 | }
|
453 | }
|
454 |
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455 |
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456 |
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457 |
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458 |
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459 | var maxSigned31BitInt = 1073741823;
|
460 |
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461 | var IMMEDIATE_PRIORITY_TIMEOUT = -1;
|
462 |
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463 | var USER_BLOCKING_PRIORITY_TIMEOUT = 250;
|
464 | var NORMAL_PRIORITY_TIMEOUT = 5000;
|
465 | var LOW_PRIORITY_TIMEOUT = 10000;
|
466 |
|
467 | var IDLE_PRIORITY_TIMEOUT = maxSigned31BitInt;
|
468 |
|
469 | var taskQueue = [];
|
470 | var timerQueue = [];
|
471 |
|
472 | var taskIdCounter = 1;
|
473 | var currentTask = null;
|
474 | var currentPriorityLevel = NormalPriority;
|
475 |
|
476 | var isPerformingWork = false;
|
477 | var isHostCallbackScheduled = false;
|
478 | var isHostTimeoutScheduled = false;
|
479 |
|
480 | function advanceTimers(currentTime) {
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481 |
|
482 | var timer = peek(timerQueue);
|
483 |
|
484 | while (timer !== null) {
|
485 | if (timer.callback === null) {
|
486 |
|
487 | pop(timerQueue);
|
488 | } else if (timer.startTime <= currentTime) {
|
489 |
|
490 | pop(timerQueue);
|
491 | timer.sortIndex = timer.expirationTime;
|
492 | push(taskQueue, timer);
|
493 |
|
494 | {
|
495 | markTaskStart(timer, currentTime);
|
496 | timer.isQueued = true;
|
497 | }
|
498 | } else {
|
499 |
|
500 | return;
|
501 | }
|
502 |
|
503 | timer = peek(timerQueue);
|
504 | }
|
505 | }
|
506 |
|
507 | function handleTimeout(currentTime) {
|
508 | isHostTimeoutScheduled = false;
|
509 | advanceTimers(currentTime);
|
510 |
|
511 | if (!isHostCallbackScheduled) {
|
512 | if (peek(taskQueue) !== null) {
|
513 | isHostCallbackScheduled = true;
|
514 | requestHostCallback(flushWork);
|
515 | } else {
|
516 | var firstTimer = peek(timerQueue);
|
517 |
|
518 | if (firstTimer !== null) {
|
519 | requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
|
520 | }
|
521 | }
|
522 | }
|
523 | }
|
524 |
|
525 | function flushWork(hasTimeRemaining, initialTime) {
|
526 | {
|
527 | markSchedulerUnsuspended(initialTime);
|
528 | }
|
529 |
|
530 |
|
531 | isHostCallbackScheduled = false;
|
532 |
|
533 | if (isHostTimeoutScheduled) {
|
534 |
|
535 | isHostTimeoutScheduled = false;
|
536 | cancelHostTimeout();
|
537 | }
|
538 |
|
539 | isPerformingWork = true;
|
540 | var previousPriorityLevel = currentPriorityLevel;
|
541 |
|
542 | try {
|
543 | if (enableProfiling) {
|
544 | try {
|
545 | return workLoop(hasTimeRemaining, initialTime);
|
546 | } catch (error) {
|
547 | if (currentTask !== null) {
|
548 | var currentTime = exports.unstable_now();
|
549 | markTaskErrored(currentTask, currentTime);
|
550 | currentTask.isQueued = false;
|
551 | }
|
552 |
|
553 | throw error;
|
554 | }
|
555 | } else {
|
556 |
|
557 | return workLoop(hasTimeRemaining, initialTime);
|
558 | }
|
559 | } finally {
|
560 | currentTask = null;
|
561 | currentPriorityLevel = previousPriorityLevel;
|
562 | isPerformingWork = false;
|
563 |
|
564 | {
|
565 | var _currentTime = exports.unstable_now();
|
566 |
|
567 | markSchedulerSuspended(_currentTime);
|
568 | }
|
569 | }
|
570 | }
|
571 |
|
572 | function workLoop(hasTimeRemaining, initialTime) {
|
573 | var currentTime = initialTime;
|
574 | advanceTimers(currentTime);
|
575 | currentTask = peek(taskQueue);
|
576 |
|
577 | while (currentTask !== null && !(enableSchedulerDebugging )) {
|
578 | if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || exports.unstable_shouldYield())) {
|
579 |
|
580 | break;
|
581 | }
|
582 |
|
583 | var callback = currentTask.callback;
|
584 |
|
585 | if (typeof callback === 'function') {
|
586 | currentTask.callback = null;
|
587 | currentPriorityLevel = currentTask.priorityLevel;
|
588 | var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
|
589 | markTaskRun(currentTask, currentTime);
|
590 | var continuationCallback = callback(didUserCallbackTimeout);
|
591 | currentTime = exports.unstable_now();
|
592 |
|
593 | if (typeof continuationCallback === 'function') {
|
594 | currentTask.callback = continuationCallback;
|
595 | markTaskYield(currentTask, currentTime);
|
596 | } else {
|
597 | {
|
598 | markTaskCompleted(currentTask, currentTime);
|
599 | currentTask.isQueued = false;
|
600 | }
|
601 |
|
602 | if (currentTask === peek(taskQueue)) {
|
603 | pop(taskQueue);
|
604 | }
|
605 | }
|
606 |
|
607 | advanceTimers(currentTime);
|
608 | } else {
|
609 | pop(taskQueue);
|
610 | }
|
611 |
|
612 | currentTask = peek(taskQueue);
|
613 | }
|
614 |
|
615 |
|
616 | if (currentTask !== null) {
|
617 | return true;
|
618 | } else {
|
619 | var firstTimer = peek(timerQueue);
|
620 |
|
621 | if (firstTimer !== null) {
|
622 | requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
|
623 | }
|
624 |
|
625 | return false;
|
626 | }
|
627 | }
|
628 |
|
629 | function unstable_runWithPriority(priorityLevel, eventHandler) {
|
630 | switch (priorityLevel) {
|
631 | case ImmediatePriority:
|
632 | case UserBlockingPriority:
|
633 | case NormalPriority:
|
634 | case LowPriority:
|
635 | case IdlePriority:
|
636 | break;
|
637 |
|
638 | default:
|
639 | priorityLevel = NormalPriority;
|
640 | }
|
641 |
|
642 | var previousPriorityLevel = currentPriorityLevel;
|
643 | currentPriorityLevel = priorityLevel;
|
644 |
|
645 | try {
|
646 | return eventHandler();
|
647 | } finally {
|
648 | currentPriorityLevel = previousPriorityLevel;
|
649 | }
|
650 | }
|
651 |
|
652 | function unstable_next(eventHandler) {
|
653 | var priorityLevel;
|
654 |
|
655 | switch (currentPriorityLevel) {
|
656 | case ImmediatePriority:
|
657 | case UserBlockingPriority:
|
658 | case NormalPriority:
|
659 |
|
660 | priorityLevel = NormalPriority;
|
661 | break;
|
662 |
|
663 | default:
|
664 |
|
665 | priorityLevel = currentPriorityLevel;
|
666 | break;
|
667 | }
|
668 |
|
669 | var previousPriorityLevel = currentPriorityLevel;
|
670 | currentPriorityLevel = priorityLevel;
|
671 |
|
672 | try {
|
673 | return eventHandler();
|
674 | } finally {
|
675 | currentPriorityLevel = previousPriorityLevel;
|
676 | }
|
677 | }
|
678 |
|
679 | function unstable_wrapCallback(callback) {
|
680 | var parentPriorityLevel = currentPriorityLevel;
|
681 | return function () {
|
682 |
|
683 | var previousPriorityLevel = currentPriorityLevel;
|
684 | currentPriorityLevel = parentPriorityLevel;
|
685 |
|
686 | try {
|
687 | return callback.apply(this, arguments);
|
688 | } finally {
|
689 | currentPriorityLevel = previousPriorityLevel;
|
690 | }
|
691 | };
|
692 | }
|
693 |
|
694 | function unstable_scheduleCallback(priorityLevel, callback, options) {
|
695 | var currentTime = exports.unstable_now();
|
696 | var startTime;
|
697 |
|
698 | if (typeof options === 'object' && options !== null) {
|
699 | var delay = options.delay;
|
700 |
|
701 | if (typeof delay === 'number' && delay > 0) {
|
702 | startTime = currentTime + delay;
|
703 | } else {
|
704 | startTime = currentTime;
|
705 | }
|
706 | } else {
|
707 | startTime = currentTime;
|
708 | }
|
709 |
|
710 | var timeout;
|
711 |
|
712 | switch (priorityLevel) {
|
713 | case ImmediatePriority:
|
714 | timeout = IMMEDIATE_PRIORITY_TIMEOUT;
|
715 | break;
|
716 |
|
717 | case UserBlockingPriority:
|
718 | timeout = USER_BLOCKING_PRIORITY_TIMEOUT;
|
719 | break;
|
720 |
|
721 | case IdlePriority:
|
722 | timeout = IDLE_PRIORITY_TIMEOUT;
|
723 | break;
|
724 |
|
725 | case LowPriority:
|
726 | timeout = LOW_PRIORITY_TIMEOUT;
|
727 | break;
|
728 |
|
729 | case NormalPriority:
|
730 | default:
|
731 | timeout = NORMAL_PRIORITY_TIMEOUT;
|
732 | break;
|
733 | }
|
734 |
|
735 | var expirationTime = startTime + timeout;
|
736 | var newTask = {
|
737 | id: taskIdCounter++,
|
738 | callback: callback,
|
739 | priorityLevel: priorityLevel,
|
740 | startTime: startTime,
|
741 | expirationTime: expirationTime,
|
742 | sortIndex: -1
|
743 | };
|
744 |
|
745 | {
|
746 | newTask.isQueued = false;
|
747 | }
|
748 |
|
749 | if (startTime > currentTime) {
|
750 |
|
751 | newTask.sortIndex = startTime;
|
752 | push(timerQueue, newTask);
|
753 |
|
754 | if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
|
755 |
|
756 | if (isHostTimeoutScheduled) {
|
757 |
|
758 | cancelHostTimeout();
|
759 | } else {
|
760 | isHostTimeoutScheduled = true;
|
761 | }
|
762 |
|
763 |
|
764 | requestHostTimeout(handleTimeout, startTime - currentTime);
|
765 | }
|
766 | } else {
|
767 | newTask.sortIndex = expirationTime;
|
768 | push(taskQueue, newTask);
|
769 |
|
770 | {
|
771 | markTaskStart(newTask, currentTime);
|
772 | newTask.isQueued = true;
|
773 | }
|
774 |
|
775 |
|
776 |
|
777 | if (!isHostCallbackScheduled && !isPerformingWork) {
|
778 | isHostCallbackScheduled = true;
|
779 | requestHostCallback(flushWork);
|
780 | }
|
781 | }
|
782 |
|
783 | return newTask;
|
784 | }
|
785 |
|
786 | function unstable_pauseExecution() {
|
787 | }
|
788 |
|
789 | function unstable_continueExecution() {
|
790 |
|
791 | if (!isHostCallbackScheduled && !isPerformingWork) {
|
792 | isHostCallbackScheduled = true;
|
793 | requestHostCallback(flushWork);
|
794 | }
|
795 | }
|
796 |
|
797 | function unstable_getFirstCallbackNode() {
|
798 | return peek(taskQueue);
|
799 | }
|
800 |
|
801 | function unstable_cancelCallback(task) {
|
802 | {
|
803 | if (task.isQueued) {
|
804 | var currentTime = exports.unstable_now();
|
805 | markTaskCanceled(task, currentTime);
|
806 | task.isQueued = false;
|
807 | }
|
808 | }
|
809 |
|
810 |
|
811 |
|
812 |
|
813 | task.callback = null;
|
814 | }
|
815 |
|
816 | function unstable_getCurrentPriorityLevel() {
|
817 | return currentPriorityLevel;
|
818 | }
|
819 |
|
820 | var unstable_requestPaint = requestPaint;
|
821 | var unstable_Profiling = {
|
822 | startLoggingProfilingEvents: startLoggingProfilingEvents,
|
823 | stopLoggingProfilingEvents: stopLoggingProfilingEvents,
|
824 | sharedProfilingBuffer: sharedProfilingBuffer
|
825 | } ;
|
826 |
|
827 | exports.unstable_IdlePriority = IdlePriority;
|
828 | exports.unstable_ImmediatePriority = ImmediatePriority;
|
829 | exports.unstable_LowPriority = LowPriority;
|
830 | exports.unstable_NormalPriority = NormalPriority;
|
831 | exports.unstable_Profiling = unstable_Profiling;
|
832 | exports.unstable_UserBlockingPriority = UserBlockingPriority;
|
833 | exports.unstable_cancelCallback = unstable_cancelCallback;
|
834 | exports.unstable_continueExecution = unstable_continueExecution;
|
835 | exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
|
836 | exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
|
837 | exports.unstable_next = unstable_next;
|
838 | exports.unstable_pauseExecution = unstable_pauseExecution;
|
839 | exports.unstable_requestPaint = unstable_requestPaint;
|
840 | exports.unstable_runWithPriority = unstable_runWithPriority;
|
841 | exports.unstable_scheduleCallback = unstable_scheduleCallback;
|
842 | exports.unstable_wrapCallback = unstable_wrapCallback;
|
843 | })();
|
844 | }
|