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8 |
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9 |
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10 | 'use strict';
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11 |
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12 |
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13 |
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14 | if (process.env.NODE_ENV !== "production") {
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15 | (function() {
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16 | 'use strict';
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17 |
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18 | Object.defineProperty(exports, '__esModule', { value: true });
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19 |
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20 | var enableSchedulerDebugging = false;
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21 | var enableIsInputPending = false;
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22 | var enableProfiling = true;
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23 |
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24 | var requestHostCallback;
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25 |
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26 | var requestHostTimeout;
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27 | var cancelHostTimeout;
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28 | var shouldYieldToHost;
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29 | var requestPaint;
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30 |
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31 |
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32 |
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33 | if (
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34 |
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35 | typeof window === 'undefined' ||
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36 | typeof MessageChannel !== 'function') {
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37 |
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38 |
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39 | var _callback = null;
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40 | var _timeoutID = null;
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41 |
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42 | var _flushCallback = function () {
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43 | if (_callback !== null) {
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44 | try {
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45 | var currentTime = exports.unstable_now();
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46 | var hasRemainingTime = true;
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47 |
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48 | _callback(hasRemainingTime, currentTime);
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49 |
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50 | _callback = null;
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51 | } catch (e) {
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52 | setTimeout(_flushCallback, 0);
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53 | throw e;
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54 | }
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55 | }
|
56 | };
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57 |
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58 | var initialTime = Date.now();
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59 |
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60 | exports.unstable_now = function () {
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61 | return Date.now() - initialTime;
|
62 | };
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63 |
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64 | requestHostCallback = function (cb) {
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65 | if (_callback !== null) {
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66 |
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67 | setTimeout(requestHostCallback, 0, cb);
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68 | } else {
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69 | _callback = cb;
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70 | setTimeout(_flushCallback, 0);
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71 | }
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72 | };
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73 |
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74 | requestHostTimeout = function (cb, ms) {
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75 | _timeoutID = setTimeout(cb, ms);
|
76 | };
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77 |
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78 | cancelHostTimeout = function () {
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79 | clearTimeout(_timeoutID);
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80 | };
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81 |
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82 | shouldYieldToHost = function () {
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83 | return false;
|
84 | };
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85 |
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86 | requestPaint = exports.unstable_forceFrameRate = function () {};
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87 | } else {
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88 |
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89 | var performance = window.performance;
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90 | var _Date = window.Date;
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91 | var _setTimeout = window.setTimeout;
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92 | var _clearTimeout = window.clearTimeout;
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93 |
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94 | if (typeof console !== 'undefined') {
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95 |
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96 |
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97 |
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98 | var requestAnimationFrame = window.requestAnimationFrame;
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99 | var cancelAnimationFrame = window.cancelAnimationFrame;
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100 |
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101 | if (typeof requestAnimationFrame !== 'function') {
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102 | console.error("This browser doesn't support requestAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://fb.me/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 | console.error("This browser doesn't support cancelAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://fb.me/react-polyfills');
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107 | }
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108 | }
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109 |
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110 | if (typeof performance === 'object' && typeof performance.now === 'function') {
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111 | exports.unstable_now = function () {
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112 | return performance.now();
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113 | };
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114 | } else {
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115 | var _initialTime = _Date.now();
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116 |
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117 | exports.unstable_now = function () {
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118 | return _Date.now() - _initialTime;
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119 | };
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120 | }
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121 |
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122 | var isMessageLoopRunning = false;
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123 | var scheduledHostCallback = null;
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124 | var taskTimeoutID = -1;
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125 |
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126 |
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127 |
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128 |
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129 | var yieldInterval = 5;
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130 | var deadline = 0;
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131 |
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132 |
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133 | var maxYieldInterval = 300;
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134 | var needsPaint = false;
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135 |
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136 | if (enableIsInputPending && navigator !== undefined && navigator.scheduling !== undefined && navigator.scheduling.isInputPending !== undefined) {
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137 | var scheduling = navigator.scheduling;
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138 |
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139 | shouldYieldToHost = function () {
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140 | var currentTime = exports.unstable_now();
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141 |
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142 | if (currentTime >= deadline) {
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143 |
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144 |
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145 |
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146 |
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147 |
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148 |
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149 |
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150 |
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151 | if (needsPaint || scheduling.isInputPending()) {
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152 |
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153 | return true;
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154 | }
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155 |
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156 |
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157 |
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158 | return currentTime >= maxYieldInterval;
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159 | } else {
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160 |
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161 | return false;
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162 | }
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163 | };
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164 |
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165 | requestPaint = function () {
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166 | needsPaint = true;
|
167 | };
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168 | } else {
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169 |
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170 |
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171 | shouldYieldToHost = function () {
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172 | return exports.unstable_now() >= deadline;
|
173 | };
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174 |
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175 |
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176 | requestPaint = function () {};
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177 | }
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178 |
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179 | exports.unstable_forceFrameRate = function (fps) {
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180 | if (fps < 0 || fps > 125) {
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181 | console.error('forceFrameRate takes a positive int between 0 and 125, ' + 'forcing framerates higher than 125 fps is not unsupported');
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182 | return;
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183 | }
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184 |
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185 | if (fps > 0) {
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186 | yieldInterval = Math.floor(1000 / fps);
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187 | } else {
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188 |
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189 | yieldInterval = 5;
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190 | }
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191 | };
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192 |
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193 | var performWorkUntilDeadline = function () {
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194 | if (scheduledHostCallback !== null) {
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195 | var currentTime = exports.unstable_now();
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196 |
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197 |
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198 |
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199 | deadline = currentTime + yieldInterval;
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200 | var hasTimeRemaining = true;
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201 |
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202 | try {
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203 | var hasMoreWork = scheduledHostCallback(hasTimeRemaining, currentTime);
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204 |
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205 | if (!hasMoreWork) {
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206 | isMessageLoopRunning = false;
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207 | scheduledHostCallback = null;
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208 | } else {
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209 |
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210 |
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211 | port.postMessage(null);
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212 | }
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213 | } catch (error) {
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214 |
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215 |
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216 | port.postMessage(null);
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217 | throw error;
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218 | }
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219 | } else {
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220 | isMessageLoopRunning = false;
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221 | }
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222 |
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223 |
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224 |
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225 | needsPaint = false;
|
226 | };
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227 |
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228 | var channel = new MessageChannel();
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229 | var port = channel.port2;
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230 | channel.port1.onmessage = performWorkUntilDeadline;
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231 |
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232 | requestHostCallback = function (callback) {
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233 | scheduledHostCallback = callback;
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234 |
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235 | if (!isMessageLoopRunning) {
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236 | isMessageLoopRunning = true;
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237 | port.postMessage(null);
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238 | }
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239 | };
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240 |
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241 | requestHostTimeout = function (callback, ms) {
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242 | taskTimeoutID = _setTimeout(function () {
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243 | callback(exports.unstable_now());
|
244 | }, ms);
|
245 | };
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246 |
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247 | cancelHostTimeout = function () {
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248 | _clearTimeout(taskTimeoutID);
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249 |
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250 | taskTimeoutID = -1;
|
251 | };
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252 | }
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253 |
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254 | function push(heap, node) {
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255 | var index = heap.length;
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256 | heap.push(node);
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257 | siftUp(heap, node, index);
|
258 | }
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259 | function peek(heap) {
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260 | var first = heap[0];
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261 | return first === undefined ? null : first;
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262 | }
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263 | function pop(heap) {
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264 | var first = heap[0];
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265 |
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266 | if (first !== undefined) {
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267 | var last = heap.pop();
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268 |
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269 | if (last !== first) {
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270 | heap[0] = last;
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271 | siftDown(heap, last, 0);
|
272 | }
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273 |
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274 | return first;
|
275 | } else {
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276 | return null;
|
277 | }
|
278 | }
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279 |
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280 | function siftUp(heap, node, i) {
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281 | var index = i;
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282 |
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283 | while (true) {
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284 | var parentIndex = Math.floor((index - 1) / 2);
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285 | var parent = heap[parentIndex];
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286 |
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287 | if (parent !== undefined && compare(parent, node) > 0) {
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288 |
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289 | heap[parentIndex] = node;
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290 | heap[index] = parent;
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291 | index = parentIndex;
|
292 | } else {
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293 |
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294 | return;
|
295 | }
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296 | }
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297 | }
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298 |
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299 | function siftDown(heap, node, i) {
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300 | var index = i;
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301 | var length = heap.length;
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302 |
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303 | while (index < length) {
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304 | var leftIndex = (index + 1) * 2 - 1;
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305 | var left = heap[leftIndex];
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306 | var rightIndex = leftIndex + 1;
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307 | var right = heap[rightIndex];
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308 |
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309 | if (left !== undefined && compare(left, node) < 0) {
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310 | if (right !== undefined && compare(right, left) < 0) {
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311 | heap[index] = right;
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312 | heap[rightIndex] = node;
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313 | index = rightIndex;
|
314 | } else {
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315 | heap[index] = left;
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316 | heap[leftIndex] = node;
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317 | index = leftIndex;
|
318 | }
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319 | } else if (right !== undefined && compare(right, node) < 0) {
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320 | heap[index] = right;
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321 | heap[rightIndex] = node;
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322 | index = rightIndex;
|
323 | } else {
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324 |
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325 | return;
|
326 | }
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327 | }
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328 | }
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329 |
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330 | function compare(a, b) {
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331 |
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332 | var diff = a.sortIndex - b.sortIndex;
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333 | return diff !== 0 ? diff : a.id - b.id;
|
334 | }
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335 |
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336 |
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337 | var NoPriority = 0;
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338 | var ImmediatePriority = 1;
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339 | var UserBlockingPriority = 2;
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340 | var NormalPriority = 3;
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341 | var LowPriority = 4;
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342 | var IdlePriority = 5;
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343 |
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344 | var runIdCounter = 0;
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345 | var mainThreadIdCounter = 0;
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346 | var profilingStateSize = 4;
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347 | var sharedProfilingBuffer = enableProfiling ?
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348 | typeof SharedArrayBuffer === 'function' ? new SharedArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) :
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349 | typeof ArrayBuffer === 'function' ? new ArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : null
|
350 | : null;
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351 | var profilingState = enableProfiling && sharedProfilingBuffer !== null ? new Int32Array(sharedProfilingBuffer) : [];
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352 |
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353 | var PRIORITY = 0;
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354 | var CURRENT_TASK_ID = 1;
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355 | var CURRENT_RUN_ID = 2;
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356 | var QUEUE_SIZE = 3;
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357 |
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358 | if (enableProfiling) {
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359 | profilingState[PRIORITY] = NoPriority;
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360 |
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361 |
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362 | profilingState[QUEUE_SIZE] = 0;
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363 | profilingState[CURRENT_TASK_ID] = 0;
|
364 | }
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365 |
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366 |
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367 | var INITIAL_EVENT_LOG_SIZE = 131072;
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368 | var MAX_EVENT_LOG_SIZE = 524288;
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369 |
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370 | var eventLogSize = 0;
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371 | var eventLogBuffer = null;
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372 | var eventLog = null;
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373 | var eventLogIndex = 0;
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374 | var TaskStartEvent = 1;
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375 | var TaskCompleteEvent = 2;
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376 | var TaskErrorEvent = 3;
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377 | var TaskCancelEvent = 4;
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378 | var TaskRunEvent = 5;
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379 | var TaskYieldEvent = 6;
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380 | var SchedulerSuspendEvent = 7;
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381 | var SchedulerResumeEvent = 8;
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382 |
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383 | function logEvent(entries) {
|
384 | if (eventLog !== null) {
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385 | var offset = eventLogIndex;
|
386 | eventLogIndex += entries.length;
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387 |
|
388 | if (eventLogIndex + 1 > eventLogSize) {
|
389 | eventLogSize *= 2;
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390 |
|
391 | if (eventLogSize > MAX_EVENT_LOG_SIZE) {
|
392 | console.error("Scheduler Profiling: Event log exceeded maximum size. Don't " + 'forget to call `stopLoggingProfilingEvents()`.');
|
393 | stopLoggingProfilingEvents();
|
394 | return;
|
395 | }
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396 |
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397 | var newEventLog = new Int32Array(eventLogSize * 4);
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398 | newEventLog.set(eventLog);
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399 | eventLogBuffer = newEventLog.buffer;
|
400 | eventLog = newEventLog;
|
401 | }
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402 |
|
403 | eventLog.set(entries, offset);
|
404 | }
|
405 | }
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406 |
|
407 | function startLoggingProfilingEvents() {
|
408 | eventLogSize = INITIAL_EVENT_LOG_SIZE;
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409 | eventLogBuffer = new ArrayBuffer(eventLogSize * 4);
|
410 | eventLog = new Int32Array(eventLogBuffer);
|
411 | eventLogIndex = 0;
|
412 | }
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413 | function stopLoggingProfilingEvents() {
|
414 | var buffer = eventLogBuffer;
|
415 | eventLogSize = 0;
|
416 | eventLogBuffer = null;
|
417 | eventLog = null;
|
418 | eventLogIndex = 0;
|
419 | return buffer;
|
420 | }
|
421 | function markTaskStart(task, ms) {
|
422 | if (enableProfiling) {
|
423 | profilingState[QUEUE_SIZE]++;
|
424 |
|
425 | if (eventLog !== null) {
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426 |
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427 |
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428 |
|
429 | logEvent([TaskStartEvent, ms * 1000, task.id, task.priorityLevel]);
|
430 | }
|
431 | }
|
432 | }
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433 | function markTaskCompleted(task, ms) {
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434 | if (enableProfiling) {
|
435 | profilingState[PRIORITY] = NoPriority;
|
436 | profilingState[CURRENT_TASK_ID] = 0;
|
437 | profilingState[QUEUE_SIZE]--;
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438 |
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439 | if (eventLog !== null) {
|
440 | logEvent([TaskCompleteEvent, ms * 1000, task.id]);
|
441 | }
|
442 | }
|
443 | }
|
444 | function markTaskCanceled(task, ms) {
|
445 | if (enableProfiling) {
|
446 | profilingState[QUEUE_SIZE]--;
|
447 |
|
448 | if (eventLog !== null) {
|
449 | logEvent([TaskCancelEvent, ms * 1000, task.id]);
|
450 | }
|
451 | }
|
452 | }
|
453 | function markTaskErrored(task, ms) {
|
454 | if (enableProfiling) {
|
455 | profilingState[PRIORITY] = NoPriority;
|
456 | profilingState[CURRENT_TASK_ID] = 0;
|
457 | profilingState[QUEUE_SIZE]--;
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458 |
|
459 | if (eventLog !== null) {
|
460 | logEvent([TaskErrorEvent, ms * 1000, task.id]);
|
461 | }
|
462 | }
|
463 | }
|
464 | function markTaskRun(task, ms) {
|
465 | if (enableProfiling) {
|
466 | runIdCounter++;
|
467 | profilingState[PRIORITY] = task.priorityLevel;
|
468 | profilingState[CURRENT_TASK_ID] = task.id;
|
469 | profilingState[CURRENT_RUN_ID] = runIdCounter;
|
470 |
|
471 | if (eventLog !== null) {
|
472 | logEvent([TaskRunEvent, ms * 1000, task.id, runIdCounter]);
|
473 | }
|
474 | }
|
475 | }
|
476 | function markTaskYield(task, ms) {
|
477 | if (enableProfiling) {
|
478 | profilingState[PRIORITY] = NoPriority;
|
479 | profilingState[CURRENT_TASK_ID] = 0;
|
480 | profilingState[CURRENT_RUN_ID] = 0;
|
481 |
|
482 | if (eventLog !== null) {
|
483 | logEvent([TaskYieldEvent, ms * 1000, task.id, runIdCounter]);
|
484 | }
|
485 | }
|
486 | }
|
487 | function markSchedulerSuspended(ms) {
|
488 | if (enableProfiling) {
|
489 | mainThreadIdCounter++;
|
490 |
|
491 | if (eventLog !== null) {
|
492 | logEvent([SchedulerSuspendEvent, ms * 1000, mainThreadIdCounter]);
|
493 | }
|
494 | }
|
495 | }
|
496 | function markSchedulerUnsuspended(ms) {
|
497 | if (enableProfiling) {
|
498 | if (eventLog !== null) {
|
499 | logEvent([SchedulerResumeEvent, ms * 1000, mainThreadIdCounter]);
|
500 | }
|
501 | }
|
502 | }
|
503 |
|
504 |
|
505 |
|
506 |
|
507 |
|
508 | var maxSigned31BitInt = 1073741823;
|
509 |
|
510 | var IMMEDIATE_PRIORITY_TIMEOUT = -1;
|
511 |
|
512 | var USER_BLOCKING_PRIORITY = 250;
|
513 | var NORMAL_PRIORITY_TIMEOUT = 5000;
|
514 | var LOW_PRIORITY_TIMEOUT = 10000;
|
515 |
|
516 | var IDLE_PRIORITY = maxSigned31BitInt;
|
517 |
|
518 | var taskQueue = [];
|
519 | var timerQueue = [];
|
520 |
|
521 | var taskIdCounter = 1;
|
522 |
|
523 | var isSchedulerPaused = false;
|
524 | var currentTask = null;
|
525 | var currentPriorityLevel = NormalPriority;
|
526 |
|
527 | var isPerformingWork = false;
|
528 | var isHostCallbackScheduled = false;
|
529 | var isHostTimeoutScheduled = false;
|
530 |
|
531 | function advanceTimers(currentTime) {
|
532 |
|
533 | var timer = peek(timerQueue);
|
534 |
|
535 | while (timer !== null) {
|
536 | if (timer.callback === null) {
|
537 |
|
538 | pop(timerQueue);
|
539 | } else if (timer.startTime <= currentTime) {
|
540 |
|
541 | pop(timerQueue);
|
542 | timer.sortIndex = timer.expirationTime;
|
543 | push(taskQueue, timer);
|
544 |
|
545 | if (enableProfiling) {
|
546 | markTaskStart(timer, currentTime);
|
547 | timer.isQueued = true;
|
548 | }
|
549 | } else {
|
550 |
|
551 | return;
|
552 | }
|
553 |
|
554 | timer = peek(timerQueue);
|
555 | }
|
556 | }
|
557 |
|
558 | function handleTimeout(currentTime) {
|
559 | isHostTimeoutScheduled = false;
|
560 | advanceTimers(currentTime);
|
561 |
|
562 | if (!isHostCallbackScheduled) {
|
563 | if (peek(taskQueue) !== null) {
|
564 | isHostCallbackScheduled = true;
|
565 | requestHostCallback(flushWork);
|
566 | } else {
|
567 | var firstTimer = peek(timerQueue);
|
568 |
|
569 | if (firstTimer !== null) {
|
570 | requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
|
571 | }
|
572 | }
|
573 | }
|
574 | }
|
575 |
|
576 | function flushWork(hasTimeRemaining, initialTime) {
|
577 | if (enableProfiling) {
|
578 | markSchedulerUnsuspended(initialTime);
|
579 | }
|
580 |
|
581 |
|
582 | isHostCallbackScheduled = false;
|
583 |
|
584 | if (isHostTimeoutScheduled) {
|
585 |
|
586 | isHostTimeoutScheduled = false;
|
587 | cancelHostTimeout();
|
588 | }
|
589 |
|
590 | isPerformingWork = true;
|
591 | var previousPriorityLevel = currentPriorityLevel;
|
592 |
|
593 | try {
|
594 | if (enableProfiling) {
|
595 | try {
|
596 | return workLoop(hasTimeRemaining, initialTime);
|
597 | } catch (error) {
|
598 | if (currentTask !== null) {
|
599 | var currentTime = exports.unstable_now();
|
600 | markTaskErrored(currentTask, currentTime);
|
601 | currentTask.isQueued = false;
|
602 | }
|
603 |
|
604 | throw error;
|
605 | }
|
606 | } else {
|
607 |
|
608 | return workLoop(hasTimeRemaining, initialTime);
|
609 | }
|
610 | } finally {
|
611 | currentTask = null;
|
612 | currentPriorityLevel = previousPriorityLevel;
|
613 | isPerformingWork = false;
|
614 |
|
615 | if (enableProfiling) {
|
616 | var _currentTime = exports.unstable_now();
|
617 |
|
618 | markSchedulerSuspended(_currentTime);
|
619 | }
|
620 | }
|
621 | }
|
622 |
|
623 | function workLoop(hasTimeRemaining, initialTime) {
|
624 | var currentTime = initialTime;
|
625 | advanceTimers(currentTime);
|
626 | currentTask = peek(taskQueue);
|
627 |
|
628 | while (currentTask !== null && !(enableSchedulerDebugging && isSchedulerPaused)) {
|
629 | if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) {
|
630 |
|
631 | break;
|
632 | }
|
633 |
|
634 | var callback = currentTask.callback;
|
635 |
|
636 | if (callback !== null) {
|
637 | currentTask.callback = null;
|
638 | currentPriorityLevel = currentTask.priorityLevel;
|
639 | var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
|
640 | markTaskRun(currentTask, currentTime);
|
641 | var continuationCallback = callback(didUserCallbackTimeout);
|
642 | currentTime = exports.unstable_now();
|
643 |
|
644 | if (typeof continuationCallback === 'function') {
|
645 | currentTask.callback = continuationCallback;
|
646 | markTaskYield(currentTask, currentTime);
|
647 | } else {
|
648 | if (enableProfiling) {
|
649 | markTaskCompleted(currentTask, currentTime);
|
650 | currentTask.isQueued = false;
|
651 | }
|
652 |
|
653 | if (currentTask === peek(taskQueue)) {
|
654 | pop(taskQueue);
|
655 | }
|
656 | }
|
657 |
|
658 | advanceTimers(currentTime);
|
659 | } else {
|
660 | pop(taskQueue);
|
661 | }
|
662 |
|
663 | currentTask = peek(taskQueue);
|
664 | }
|
665 |
|
666 |
|
667 | if (currentTask !== null) {
|
668 | return true;
|
669 | } else {
|
670 | var firstTimer = peek(timerQueue);
|
671 |
|
672 | if (firstTimer !== null) {
|
673 | requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
|
674 | }
|
675 |
|
676 | return false;
|
677 | }
|
678 | }
|
679 |
|
680 | function unstable_runWithPriority(priorityLevel, eventHandler) {
|
681 | switch (priorityLevel) {
|
682 | case ImmediatePriority:
|
683 | case UserBlockingPriority:
|
684 | case NormalPriority:
|
685 | case LowPriority:
|
686 | case IdlePriority:
|
687 | break;
|
688 |
|
689 | default:
|
690 | priorityLevel = NormalPriority;
|
691 | }
|
692 |
|
693 | var previousPriorityLevel = currentPriorityLevel;
|
694 | currentPriorityLevel = priorityLevel;
|
695 |
|
696 | try {
|
697 | return eventHandler();
|
698 | } finally {
|
699 | currentPriorityLevel = previousPriorityLevel;
|
700 | }
|
701 | }
|
702 |
|
703 | function unstable_next(eventHandler) {
|
704 | var priorityLevel;
|
705 |
|
706 | switch (currentPriorityLevel) {
|
707 | case ImmediatePriority:
|
708 | case UserBlockingPriority:
|
709 | case NormalPriority:
|
710 |
|
711 | priorityLevel = NormalPriority;
|
712 | break;
|
713 |
|
714 | default:
|
715 |
|
716 | priorityLevel = currentPriorityLevel;
|
717 | break;
|
718 | }
|
719 |
|
720 | var previousPriorityLevel = currentPriorityLevel;
|
721 | currentPriorityLevel = priorityLevel;
|
722 |
|
723 | try {
|
724 | return eventHandler();
|
725 | } finally {
|
726 | currentPriorityLevel = previousPriorityLevel;
|
727 | }
|
728 | }
|
729 |
|
730 | function unstable_wrapCallback(callback) {
|
731 | var parentPriorityLevel = currentPriorityLevel;
|
732 | return function () {
|
733 |
|
734 | var previousPriorityLevel = currentPriorityLevel;
|
735 | currentPriorityLevel = parentPriorityLevel;
|
736 |
|
737 | try {
|
738 | return callback.apply(this, arguments);
|
739 | } finally {
|
740 | currentPriorityLevel = previousPriorityLevel;
|
741 | }
|
742 | };
|
743 | }
|
744 |
|
745 | function timeoutForPriorityLevel(priorityLevel) {
|
746 | switch (priorityLevel) {
|
747 | case ImmediatePriority:
|
748 | return IMMEDIATE_PRIORITY_TIMEOUT;
|
749 |
|
750 | case UserBlockingPriority:
|
751 | return USER_BLOCKING_PRIORITY;
|
752 |
|
753 | case IdlePriority:
|
754 | return IDLE_PRIORITY;
|
755 |
|
756 | case LowPriority:
|
757 | return LOW_PRIORITY_TIMEOUT;
|
758 |
|
759 | case NormalPriority:
|
760 | default:
|
761 | return NORMAL_PRIORITY_TIMEOUT;
|
762 | }
|
763 | }
|
764 |
|
765 | function unstable_scheduleCallback(priorityLevel, callback, options) {
|
766 | var currentTime = exports.unstable_now();
|
767 | var startTime;
|
768 | var timeout;
|
769 |
|
770 | if (typeof options === 'object' && options !== null) {
|
771 | var delay = options.delay;
|
772 |
|
773 | if (typeof delay === 'number' && delay > 0) {
|
774 | startTime = currentTime + delay;
|
775 | } else {
|
776 | startTime = currentTime;
|
777 | }
|
778 |
|
779 | timeout = typeof options.timeout === 'number' ? options.timeout : timeoutForPriorityLevel(priorityLevel);
|
780 | } else {
|
781 | timeout = timeoutForPriorityLevel(priorityLevel);
|
782 | startTime = currentTime;
|
783 | }
|
784 |
|
785 | var expirationTime = startTime + timeout;
|
786 | var newTask = {
|
787 | id: taskIdCounter++,
|
788 | callback: callback,
|
789 | priorityLevel: priorityLevel,
|
790 | startTime: startTime,
|
791 | expirationTime: expirationTime,
|
792 | sortIndex: -1
|
793 | };
|
794 |
|
795 | if (enableProfiling) {
|
796 | newTask.isQueued = false;
|
797 | }
|
798 |
|
799 | if (startTime > currentTime) {
|
800 |
|
801 | newTask.sortIndex = startTime;
|
802 | push(timerQueue, newTask);
|
803 |
|
804 | if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
|
805 |
|
806 | if (isHostTimeoutScheduled) {
|
807 |
|
808 | cancelHostTimeout();
|
809 | } else {
|
810 | isHostTimeoutScheduled = true;
|
811 | }
|
812 |
|
813 |
|
814 | requestHostTimeout(handleTimeout, startTime - currentTime);
|
815 | }
|
816 | } else {
|
817 | newTask.sortIndex = expirationTime;
|
818 | push(taskQueue, newTask);
|
819 |
|
820 | if (enableProfiling) {
|
821 | markTaskStart(newTask, currentTime);
|
822 | newTask.isQueued = true;
|
823 | }
|
824 |
|
825 |
|
826 |
|
827 | if (!isHostCallbackScheduled && !isPerformingWork) {
|
828 | isHostCallbackScheduled = true;
|
829 | requestHostCallback(flushWork);
|
830 | }
|
831 | }
|
832 |
|
833 | return newTask;
|
834 | }
|
835 |
|
836 | function unstable_pauseExecution() {
|
837 | isSchedulerPaused = true;
|
838 | }
|
839 |
|
840 | function unstable_continueExecution() {
|
841 | isSchedulerPaused = false;
|
842 |
|
843 | if (!isHostCallbackScheduled && !isPerformingWork) {
|
844 | isHostCallbackScheduled = true;
|
845 | requestHostCallback(flushWork);
|
846 | }
|
847 | }
|
848 |
|
849 | function unstable_getFirstCallbackNode() {
|
850 | return peek(taskQueue);
|
851 | }
|
852 |
|
853 | function unstable_cancelCallback(task) {
|
854 | if (enableProfiling) {
|
855 | if (task.isQueued) {
|
856 | var currentTime = exports.unstable_now();
|
857 | markTaskCanceled(task, currentTime);
|
858 | task.isQueued = false;
|
859 | }
|
860 | }
|
861 |
|
862 |
|
863 |
|
864 |
|
865 | task.callback = null;
|
866 | }
|
867 |
|
868 | function unstable_getCurrentPriorityLevel() {
|
869 | return currentPriorityLevel;
|
870 | }
|
871 |
|
872 | function unstable_shouldYield() {
|
873 | var currentTime = exports.unstable_now();
|
874 | advanceTimers(currentTime);
|
875 | var firstTask = peek(taskQueue);
|
876 | return firstTask !== currentTask && currentTask !== null && firstTask !== null && firstTask.callback !== null && firstTask.startTime <= currentTime && firstTask.expirationTime < currentTask.expirationTime || shouldYieldToHost();
|
877 | }
|
878 |
|
879 | var unstable_requestPaint = requestPaint;
|
880 | var unstable_Profiling = enableProfiling ? {
|
881 | startLoggingProfilingEvents: startLoggingProfilingEvents,
|
882 | stopLoggingProfilingEvents: stopLoggingProfilingEvents,
|
883 | sharedProfilingBuffer: sharedProfilingBuffer
|
884 | } : null;
|
885 |
|
886 | exports.unstable_ImmediatePriority = ImmediatePriority;
|
887 | exports.unstable_UserBlockingPriority = UserBlockingPriority;
|
888 | exports.unstable_NormalPriority = NormalPriority;
|
889 | exports.unstable_IdlePriority = IdlePriority;
|
890 | exports.unstable_LowPriority = LowPriority;
|
891 | exports.unstable_runWithPriority = unstable_runWithPriority;
|
892 | exports.unstable_next = unstable_next;
|
893 | exports.unstable_scheduleCallback = unstable_scheduleCallback;
|
894 | exports.unstable_cancelCallback = unstable_cancelCallback;
|
895 | exports.unstable_wrapCallback = unstable_wrapCallback;
|
896 | exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
|
897 | exports.unstable_shouldYield = unstable_shouldYield;
|
898 | exports.unstable_requestPaint = unstable_requestPaint;
|
899 | exports.unstable_continueExecution = unstable_continueExecution;
|
900 | exports.unstable_pauseExecution = unstable_pauseExecution;
|
901 | exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
|
902 | exports.unstable_Profiling = unstable_Profiling;
|
903 | })();
|
904 | }
|