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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 |
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22 | var enableProfiling = true;
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23 |
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24 | var currentTime = 0;
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25 | var scheduledCallback = null;
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26 | var scheduledTimeout = null;
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27 | var timeoutTime = -1;
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28 | var yieldedValues = null;
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29 | var expectedNumberOfYields = -1;
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30 | var didStop = false;
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31 | var isFlushing = false;
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32 | var needsPaint = false;
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33 | var shouldYieldForPaint = false;
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34 | function requestHostCallback(callback) {
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35 | scheduledCallback = callback;
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36 | }
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37 |
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38 | function requestHostTimeout(callback, ms) {
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39 | scheduledTimeout = callback;
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40 | timeoutTime = currentTime + ms;
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41 | }
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42 | function cancelHostTimeout() {
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43 | scheduledTimeout = null;
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44 | timeoutTime = -1;
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45 | }
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46 | function shouldYieldToHost() {
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47 | if (expectedNumberOfYields !== -1 && yieldedValues !== null && yieldedValues.length >= expectedNumberOfYields || shouldYieldForPaint && needsPaint) {
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48 |
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49 | didStop = true;
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50 | return true;
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51 | }
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52 |
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53 | return false;
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54 | }
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55 | function getCurrentTime() {
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56 | return currentTime;
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57 | }
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58 | function forceFrameRate() {
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59 | }
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60 |
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61 |
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62 | function unstable_flushNumberOfYields(count) {
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63 | if (isFlushing) {
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64 | throw new Error('Already flushing work.');
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65 | }
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66 |
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67 | if (scheduledCallback !== null) {
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68 | var cb = scheduledCallback;
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69 | expectedNumberOfYields = count;
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70 | isFlushing = true;
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71 |
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72 | try {
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73 | var hasMoreWork = true;
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74 |
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75 | do {
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76 | hasMoreWork = cb(true, currentTime);
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77 | } while (hasMoreWork && !didStop);
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78 |
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79 | if (!hasMoreWork) {
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80 | scheduledCallback = null;
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81 | }
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82 | } finally {
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83 | expectedNumberOfYields = -1;
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84 | didStop = false;
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85 | isFlushing = false;
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86 | }
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87 | }
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88 | }
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89 | function unstable_flushUntilNextPaint() {
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90 | if (isFlushing) {
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91 | throw new Error('Already flushing work.');
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92 | }
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93 |
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94 | if (scheduledCallback !== null) {
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95 | var cb = scheduledCallback;
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96 | shouldYieldForPaint = true;
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97 | needsPaint = false;
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98 | isFlushing = true;
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99 |
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100 | try {
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101 | var hasMoreWork = true;
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102 |
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103 | do {
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104 | hasMoreWork = cb(true, currentTime);
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105 | } while (hasMoreWork && !didStop);
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106 |
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107 | if (!hasMoreWork) {
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108 | scheduledCallback = null;
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109 | }
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110 | } finally {
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111 | shouldYieldForPaint = false;
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112 | didStop = false;
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113 | isFlushing = false;
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114 | }
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115 | }
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116 | }
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117 | function unstable_flushExpired() {
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118 | if (isFlushing) {
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119 | throw new Error('Already flushing work.');
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120 | }
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121 |
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122 | if (scheduledCallback !== null) {
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123 | isFlushing = true;
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124 |
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125 | try {
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126 | var hasMoreWork = scheduledCallback(false, currentTime);
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127 |
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128 | if (!hasMoreWork) {
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129 | scheduledCallback = null;
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130 | }
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131 | } finally {
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132 | isFlushing = false;
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133 | }
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134 | }
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135 | }
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136 | function unstable_flushAllWithoutAsserting() {
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137 |
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138 | if (isFlushing) {
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139 | throw new Error('Already flushing work.');
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140 | }
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141 |
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142 | if (scheduledCallback !== null) {
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143 | var cb = scheduledCallback;
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144 | isFlushing = true;
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145 |
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146 | try {
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147 | var hasMoreWork = true;
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148 |
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149 | do {
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150 | hasMoreWork = cb(true, currentTime);
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151 | } while (hasMoreWork);
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152 |
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153 | if (!hasMoreWork) {
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154 | scheduledCallback = null;
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155 | }
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156 |
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157 | return true;
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158 | } finally {
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159 | isFlushing = false;
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160 | }
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161 | } else {
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162 | return false;
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163 | }
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164 | }
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165 | function unstable_clearYields() {
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166 | if (yieldedValues === null) {
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167 | return [];
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168 | }
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169 |
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170 | var values = yieldedValues;
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171 | yieldedValues = null;
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172 | return values;
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173 | }
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174 | function unstable_flushAll() {
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175 | if (yieldedValues !== null) {
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176 | throw new Error('Log is not empty. Assert on the log of yielded values before ' + 'flushing additional work.');
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177 | }
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178 |
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179 | unstable_flushAllWithoutAsserting();
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180 |
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181 | if (yieldedValues !== null) {
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182 | throw new Error('While flushing work, something yielded a value. Use an ' + 'assertion helper to assert on the log of yielded values, e.g. ' + 'expect(Scheduler).toFlushAndYield([...])');
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183 | }
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184 | }
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185 | function unstable_yieldValue(value) {
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186 | if (yieldedValues === null) {
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187 | yieldedValues = [value];
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188 | } else {
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189 | yieldedValues.push(value);
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190 | }
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191 | }
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192 | function unstable_advanceTime(ms) {
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193 | currentTime += ms;
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194 |
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195 | if (!isFlushing) {
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196 | if (scheduledTimeout !== null && timeoutTime <= currentTime) {
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197 | scheduledTimeout(currentTime);
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198 | timeoutTime = -1;
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199 | scheduledTimeout = null;
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200 | }
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201 |
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202 | unstable_flushExpired();
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203 | }
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204 | }
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205 | function requestPaint() {
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206 | needsPaint = true;
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207 | }
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208 |
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209 | function push(heap, node) {
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210 | var index = heap.length;
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211 | heap.push(node);
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212 | siftUp(heap, node, index);
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213 | }
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214 | function peek(heap) {
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215 | var first = heap[0];
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216 | return first === undefined ? null : first;
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217 | }
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218 | function pop(heap) {
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219 | var first = heap[0];
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220 |
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221 | if (first !== undefined) {
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222 | var last = heap.pop();
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223 |
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224 | if (last !== first) {
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225 | heap[0] = last;
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226 | siftDown(heap, last, 0);
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227 | }
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228 |
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229 | return first;
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230 | } else {
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231 | return null;
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232 | }
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233 | }
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234 |
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235 | function siftUp(heap, node, i) {
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236 | var index = i;
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237 |
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238 | while (true) {
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239 | var parentIndex = Math.floor((index - 1) / 2);
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240 | var parent = heap[parentIndex];
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241 |
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242 | if (parent !== undefined && compare(parent, node) > 0) {
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243 |
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244 | heap[parentIndex] = node;
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245 | heap[index] = parent;
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246 | index = parentIndex;
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247 | } else {
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248 |
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249 | return;
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250 | }
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251 | }
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252 | }
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253 |
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254 | function siftDown(heap, node, i) {
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255 | var index = i;
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256 | var length = heap.length;
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257 |
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258 | while (index < length) {
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259 | var leftIndex = (index + 1) * 2 - 1;
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260 | var left = heap[leftIndex];
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261 | var rightIndex = leftIndex + 1;
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262 | var right = heap[rightIndex];
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263 |
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264 | if (left !== undefined && compare(left, node) < 0) {
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265 | if (right !== undefined && compare(right, left) < 0) {
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266 | heap[index] = right;
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267 | heap[rightIndex] = node;
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268 | index = rightIndex;
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269 | } else {
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270 | heap[index] = left;
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271 | heap[leftIndex] = node;
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272 | index = leftIndex;
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273 | }
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274 | } else if (right !== undefined && compare(right, node) < 0) {
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275 | heap[index] = right;
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276 | heap[rightIndex] = node;
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277 | index = rightIndex;
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278 | } else {
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279 |
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280 | return;
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281 | }
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282 | }
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283 | }
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284 |
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285 | function compare(a, b) {
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286 |
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287 | var diff = a.sortIndex - b.sortIndex;
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288 | return diff !== 0 ? diff : a.id - b.id;
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289 | }
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290 |
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291 |
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292 | var NoPriority = 0;
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293 | var ImmediatePriority = 1;
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294 | var UserBlockingPriority = 2;
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295 | var NormalPriority = 3;
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296 | var LowPriority = 4;
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297 | var IdlePriority = 5;
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298 |
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299 | var runIdCounter = 0;
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300 | var mainThreadIdCounter = 0;
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301 | var profilingStateSize = 4;
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302 | var sharedProfilingBuffer = enableProfiling ?
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303 | typeof SharedArrayBuffer === 'function' ? new SharedArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) :
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304 | typeof ArrayBuffer === 'function' ? new ArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : null
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305 | : null;
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306 | var profilingState = enableProfiling && sharedProfilingBuffer !== null ? new Int32Array(sharedProfilingBuffer) : [];
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307 |
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308 | var PRIORITY = 0;
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309 | var CURRENT_TASK_ID = 1;
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310 | var CURRENT_RUN_ID = 2;
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311 | var QUEUE_SIZE = 3;
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312 |
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313 | if (enableProfiling) {
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314 | profilingState[PRIORITY] = NoPriority;
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315 |
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316 |
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317 | profilingState[QUEUE_SIZE] = 0;
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318 | profilingState[CURRENT_TASK_ID] = 0;
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319 | }
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320 |
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321 |
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322 | var INITIAL_EVENT_LOG_SIZE = 131072;
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323 | var MAX_EVENT_LOG_SIZE = 524288;
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324 |
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325 | var eventLogSize = 0;
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326 | var eventLogBuffer = null;
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327 | var eventLog = null;
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328 | var eventLogIndex = 0;
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329 | var TaskStartEvent = 1;
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330 | var TaskCompleteEvent = 2;
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331 | var TaskErrorEvent = 3;
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332 | var TaskCancelEvent = 4;
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333 | var TaskRunEvent = 5;
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334 | var TaskYieldEvent = 6;
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335 | var SchedulerSuspendEvent = 7;
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336 | var SchedulerResumeEvent = 8;
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337 |
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338 | function logEvent(entries) {
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339 | if (eventLog !== null) {
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340 | var offset = eventLogIndex;
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341 | eventLogIndex += entries.length;
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342 |
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343 | if (eventLogIndex + 1 > eventLogSize) {
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344 | eventLogSize *= 2;
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345 |
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346 | if (eventLogSize > MAX_EVENT_LOG_SIZE) {
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347 | console.error("Scheduler Profiling: Event log exceeded maximum size. Don't " + 'forget to call `stopLoggingProfilingEvents()`.');
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348 | stopLoggingProfilingEvents();
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349 | return;
|
350 | }
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351 |
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352 | var newEventLog = new Int32Array(eventLogSize * 4);
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353 | newEventLog.set(eventLog);
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354 | eventLogBuffer = newEventLog.buffer;
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355 | eventLog = newEventLog;
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356 | }
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357 |
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358 | eventLog.set(entries, offset);
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359 | }
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360 | }
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361 |
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362 | function startLoggingProfilingEvents() {
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363 | eventLogSize = INITIAL_EVENT_LOG_SIZE;
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364 | eventLogBuffer = new ArrayBuffer(eventLogSize * 4);
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365 | eventLog = new Int32Array(eventLogBuffer);
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366 | eventLogIndex = 0;
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367 | }
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368 | function stopLoggingProfilingEvents() {
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369 | var buffer = eventLogBuffer;
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370 | eventLogSize = 0;
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371 | eventLogBuffer = null;
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372 | eventLog = null;
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373 | eventLogIndex = 0;
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374 | return buffer;
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375 | }
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376 | function markTaskStart(task, ms) {
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377 | if (enableProfiling) {
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378 | profilingState[QUEUE_SIZE]++;
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379 |
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380 | if (eventLog !== null) {
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381 |
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382 |
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383 |
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384 | logEvent([TaskStartEvent, ms * 1000, task.id, task.priorityLevel]);
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385 | }
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386 | }
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387 | }
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388 | function markTaskCompleted(task, ms) {
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389 | if (enableProfiling) {
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390 | profilingState[PRIORITY] = NoPriority;
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391 | profilingState[CURRENT_TASK_ID] = 0;
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392 | profilingState[QUEUE_SIZE]--;
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393 |
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394 | if (eventLog !== null) {
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395 | logEvent([TaskCompleteEvent, ms * 1000, task.id]);
|
396 | }
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397 | }
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398 | }
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399 | function markTaskCanceled(task, ms) {
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400 | if (enableProfiling) {
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401 | profilingState[QUEUE_SIZE]--;
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402 |
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403 | if (eventLog !== null) {
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404 | logEvent([TaskCancelEvent, ms * 1000, task.id]);
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405 | }
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406 | }
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407 | }
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408 | function markTaskErrored(task, ms) {
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409 | if (enableProfiling) {
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410 | profilingState[PRIORITY] = NoPriority;
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411 | profilingState[CURRENT_TASK_ID] = 0;
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412 | profilingState[QUEUE_SIZE]--;
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413 |
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414 | if (eventLog !== null) {
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415 | logEvent([TaskErrorEvent, ms * 1000, task.id]);
|
416 | }
|
417 | }
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418 | }
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419 | function markTaskRun(task, ms) {
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420 | if (enableProfiling) {
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421 | runIdCounter++;
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422 | profilingState[PRIORITY] = task.priorityLevel;
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423 | profilingState[CURRENT_TASK_ID] = task.id;
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424 | profilingState[CURRENT_RUN_ID] = runIdCounter;
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425 |
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426 | if (eventLog !== null) {
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427 | logEvent([TaskRunEvent, ms * 1000, task.id, runIdCounter]);
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428 | }
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429 | }
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430 | }
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431 | function markTaskYield(task, ms) {
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432 | if (enableProfiling) {
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433 | profilingState[PRIORITY] = NoPriority;
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434 | profilingState[CURRENT_TASK_ID] = 0;
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435 | profilingState[CURRENT_RUN_ID] = 0;
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436 |
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437 | if (eventLog !== null) {
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438 | logEvent([TaskYieldEvent, ms * 1000, task.id, runIdCounter]);
|
439 | }
|
440 | }
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441 | }
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442 | function markSchedulerSuspended(ms) {
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443 | if (enableProfiling) {
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444 | mainThreadIdCounter++;
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445 |
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446 | if (eventLog !== null) {
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447 | logEvent([SchedulerSuspendEvent, ms * 1000, mainThreadIdCounter]);
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448 | }
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449 | }
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450 | }
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451 | function markSchedulerUnsuspended(ms) {
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452 | if (enableProfiling) {
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453 | if (eventLog !== null) {
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454 | logEvent([SchedulerResumeEvent, ms * 1000, mainThreadIdCounter]);
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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 |
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460 |
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461 |
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462 |
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463 | var maxSigned31BitInt = 1073741823;
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464 |
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465 | var IMMEDIATE_PRIORITY_TIMEOUT = -1;
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466 |
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467 | var USER_BLOCKING_PRIORITY = 250;
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468 | var NORMAL_PRIORITY_TIMEOUT = 5000;
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469 | var LOW_PRIORITY_TIMEOUT = 10000;
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470 |
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471 | var IDLE_PRIORITY = maxSigned31BitInt;
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472 |
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473 | var taskQueue = [];
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474 | var timerQueue = [];
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475 |
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476 | var taskIdCounter = 1;
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477 |
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478 | var isSchedulerPaused = false;
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479 | var currentTask = null;
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480 | var currentPriorityLevel = NormalPriority;
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481 |
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482 | var isPerformingWork = false;
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483 | var isHostCallbackScheduled = false;
|
484 | var isHostTimeoutScheduled = false;
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485 |
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486 | function advanceTimers(currentTime) {
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487 |
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488 | var timer = peek(timerQueue);
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489 |
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490 | while (timer !== null) {
|
491 | if (timer.callback === null) {
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492 |
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493 | pop(timerQueue);
|
494 | } else if (timer.startTime <= currentTime) {
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495 |
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496 | pop(timerQueue);
|
497 | timer.sortIndex = timer.expirationTime;
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498 | push(taskQueue, timer);
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499 |
|
500 | if (enableProfiling) {
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501 | markTaskStart(timer, currentTime);
|
502 | timer.isQueued = true;
|
503 | }
|
504 | } else {
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505 |
|
506 | return;
|
507 | }
|
508 |
|
509 | timer = peek(timerQueue);
|
510 | }
|
511 | }
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512 |
|
513 | function handleTimeout(currentTime) {
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514 | isHostTimeoutScheduled = false;
|
515 | advanceTimers(currentTime);
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516 |
|
517 | if (!isHostCallbackScheduled) {
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518 | if (peek(taskQueue) !== null) {
|
519 | isHostCallbackScheduled = true;
|
520 | requestHostCallback(flushWork);
|
521 | } else {
|
522 | var firstTimer = peek(timerQueue);
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523 |
|
524 | if (firstTimer !== null) {
|
525 | requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
|
526 | }
|
527 | }
|
528 | }
|
529 | }
|
530 |
|
531 | function flushWork(hasTimeRemaining, initialTime) {
|
532 | if (enableProfiling) {
|
533 | markSchedulerUnsuspended(initialTime);
|
534 | }
|
535 |
|
536 |
|
537 | isHostCallbackScheduled = false;
|
538 |
|
539 | if (isHostTimeoutScheduled) {
|
540 |
|
541 | isHostTimeoutScheduled = false;
|
542 | cancelHostTimeout();
|
543 | }
|
544 |
|
545 | isPerformingWork = true;
|
546 | var previousPriorityLevel = currentPriorityLevel;
|
547 |
|
548 | try {
|
549 | if (enableProfiling) {
|
550 | try {
|
551 | return workLoop(hasTimeRemaining, initialTime);
|
552 | } catch (error) {
|
553 | if (currentTask !== null) {
|
554 | var currentTime = getCurrentTime();
|
555 | markTaskErrored(currentTask, currentTime);
|
556 | currentTask.isQueued = false;
|
557 | }
|
558 |
|
559 | throw error;
|
560 | }
|
561 | } else {
|
562 |
|
563 | return workLoop(hasTimeRemaining, initialTime);
|
564 | }
|
565 | } finally {
|
566 | currentTask = null;
|
567 | currentPriorityLevel = previousPriorityLevel;
|
568 | isPerformingWork = false;
|
569 |
|
570 | if (enableProfiling) {
|
571 | var _currentTime = getCurrentTime();
|
572 |
|
573 | markSchedulerSuspended(_currentTime);
|
574 | }
|
575 | }
|
576 | }
|
577 |
|
578 | function workLoop(hasTimeRemaining, initialTime) {
|
579 | var currentTime = initialTime;
|
580 | advanceTimers(currentTime);
|
581 | currentTask = peek(taskQueue);
|
582 |
|
583 | while (currentTask !== null && !(enableSchedulerDebugging && isSchedulerPaused)) {
|
584 | if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) {
|
585 |
|
586 | break;
|
587 | }
|
588 |
|
589 | var callback = currentTask.callback;
|
590 |
|
591 | if (callback !== null) {
|
592 | currentTask.callback = null;
|
593 | currentPriorityLevel = currentTask.priorityLevel;
|
594 | var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
|
595 | markTaskRun(currentTask, currentTime);
|
596 | var continuationCallback = callback(didUserCallbackTimeout);
|
597 | currentTime = getCurrentTime();
|
598 |
|
599 | if (typeof continuationCallback === 'function') {
|
600 | currentTask.callback = continuationCallback;
|
601 | markTaskYield(currentTask, currentTime);
|
602 | } else {
|
603 | if (enableProfiling) {
|
604 | markTaskCompleted(currentTask, currentTime);
|
605 | currentTask.isQueued = false;
|
606 | }
|
607 |
|
608 | if (currentTask === peek(taskQueue)) {
|
609 | pop(taskQueue);
|
610 | }
|
611 | }
|
612 |
|
613 | advanceTimers(currentTime);
|
614 | } else {
|
615 | pop(taskQueue);
|
616 | }
|
617 |
|
618 | currentTask = peek(taskQueue);
|
619 | }
|
620 |
|
621 |
|
622 | if (currentTask !== null) {
|
623 | return true;
|
624 | } else {
|
625 | var firstTimer = peek(timerQueue);
|
626 |
|
627 | if (firstTimer !== null) {
|
628 | requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
|
629 | }
|
630 |
|
631 | return false;
|
632 | }
|
633 | }
|
634 |
|
635 | function unstable_runWithPriority(priorityLevel, eventHandler) {
|
636 | switch (priorityLevel) {
|
637 | case ImmediatePriority:
|
638 | case UserBlockingPriority:
|
639 | case NormalPriority:
|
640 | case LowPriority:
|
641 | case IdlePriority:
|
642 | break;
|
643 |
|
644 | default:
|
645 | priorityLevel = NormalPriority;
|
646 | }
|
647 |
|
648 | var previousPriorityLevel = currentPriorityLevel;
|
649 | currentPriorityLevel = priorityLevel;
|
650 |
|
651 | try {
|
652 | return eventHandler();
|
653 | } finally {
|
654 | currentPriorityLevel = previousPriorityLevel;
|
655 | }
|
656 | }
|
657 |
|
658 | function unstable_next(eventHandler) {
|
659 | var priorityLevel;
|
660 |
|
661 | switch (currentPriorityLevel) {
|
662 | case ImmediatePriority:
|
663 | case UserBlockingPriority:
|
664 | case NormalPriority:
|
665 |
|
666 | priorityLevel = NormalPriority;
|
667 | break;
|
668 |
|
669 | default:
|
670 |
|
671 | priorityLevel = currentPriorityLevel;
|
672 | break;
|
673 | }
|
674 |
|
675 | var previousPriorityLevel = currentPriorityLevel;
|
676 | currentPriorityLevel = priorityLevel;
|
677 |
|
678 | try {
|
679 | return eventHandler();
|
680 | } finally {
|
681 | currentPriorityLevel = previousPriorityLevel;
|
682 | }
|
683 | }
|
684 |
|
685 | function unstable_wrapCallback(callback) {
|
686 | var parentPriorityLevel = currentPriorityLevel;
|
687 | return function () {
|
688 |
|
689 | var previousPriorityLevel = currentPriorityLevel;
|
690 | currentPriorityLevel = parentPriorityLevel;
|
691 |
|
692 | try {
|
693 | return callback.apply(this, arguments);
|
694 | } finally {
|
695 | currentPriorityLevel = previousPriorityLevel;
|
696 | }
|
697 | };
|
698 | }
|
699 |
|
700 | function timeoutForPriorityLevel(priorityLevel) {
|
701 | switch (priorityLevel) {
|
702 | case ImmediatePriority:
|
703 | return IMMEDIATE_PRIORITY_TIMEOUT;
|
704 |
|
705 | case UserBlockingPriority:
|
706 | return USER_BLOCKING_PRIORITY;
|
707 |
|
708 | case IdlePriority:
|
709 | return IDLE_PRIORITY;
|
710 |
|
711 | case LowPriority:
|
712 | return LOW_PRIORITY_TIMEOUT;
|
713 |
|
714 | case NormalPriority:
|
715 | default:
|
716 | return NORMAL_PRIORITY_TIMEOUT;
|
717 | }
|
718 | }
|
719 |
|
720 | function unstable_scheduleCallback(priorityLevel, callback, options) {
|
721 | var currentTime = getCurrentTime();
|
722 | var startTime;
|
723 | var timeout;
|
724 |
|
725 | if (typeof options === 'object' && options !== null) {
|
726 | var delay = options.delay;
|
727 |
|
728 | if (typeof delay === 'number' && delay > 0) {
|
729 | startTime = currentTime + delay;
|
730 | } else {
|
731 | startTime = currentTime;
|
732 | }
|
733 |
|
734 | timeout = typeof options.timeout === 'number' ? options.timeout : timeoutForPriorityLevel(priorityLevel);
|
735 | } else {
|
736 | timeout = timeoutForPriorityLevel(priorityLevel);
|
737 | startTime = currentTime;
|
738 | }
|
739 |
|
740 | var expirationTime = startTime + timeout;
|
741 | var newTask = {
|
742 | id: taskIdCounter++,
|
743 | callback: callback,
|
744 | priorityLevel: priorityLevel,
|
745 | startTime: startTime,
|
746 | expirationTime: expirationTime,
|
747 | sortIndex: -1
|
748 | };
|
749 |
|
750 | if (enableProfiling) {
|
751 | newTask.isQueued = false;
|
752 | }
|
753 |
|
754 | if (startTime > currentTime) {
|
755 |
|
756 | newTask.sortIndex = startTime;
|
757 | push(timerQueue, newTask);
|
758 |
|
759 | if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
|
760 |
|
761 | if (isHostTimeoutScheduled) {
|
762 |
|
763 | cancelHostTimeout();
|
764 | } else {
|
765 | isHostTimeoutScheduled = true;
|
766 | }
|
767 |
|
768 |
|
769 | requestHostTimeout(handleTimeout, startTime - currentTime);
|
770 | }
|
771 | } else {
|
772 | newTask.sortIndex = expirationTime;
|
773 | push(taskQueue, newTask);
|
774 |
|
775 | if (enableProfiling) {
|
776 | markTaskStart(newTask, currentTime);
|
777 | newTask.isQueued = true;
|
778 | }
|
779 |
|
780 |
|
781 |
|
782 | if (!isHostCallbackScheduled && !isPerformingWork) {
|
783 | isHostCallbackScheduled = true;
|
784 | requestHostCallback(flushWork);
|
785 | }
|
786 | }
|
787 |
|
788 | return newTask;
|
789 | }
|
790 |
|
791 | function unstable_pauseExecution() {
|
792 | isSchedulerPaused = true;
|
793 | }
|
794 |
|
795 | function unstable_continueExecution() {
|
796 | isSchedulerPaused = false;
|
797 |
|
798 | if (!isHostCallbackScheduled && !isPerformingWork) {
|
799 | isHostCallbackScheduled = true;
|
800 | requestHostCallback(flushWork);
|
801 | }
|
802 | }
|
803 |
|
804 | function unstable_getFirstCallbackNode() {
|
805 | return peek(taskQueue);
|
806 | }
|
807 |
|
808 | function unstable_cancelCallback(task) {
|
809 | if (enableProfiling) {
|
810 | if (task.isQueued) {
|
811 | var currentTime = getCurrentTime();
|
812 | markTaskCanceled(task, currentTime);
|
813 | task.isQueued = false;
|
814 | }
|
815 | }
|
816 |
|
817 |
|
818 |
|
819 |
|
820 | task.callback = null;
|
821 | }
|
822 |
|
823 | function unstable_getCurrentPriorityLevel() {
|
824 | return currentPriorityLevel;
|
825 | }
|
826 |
|
827 | function unstable_shouldYield() {
|
828 | var currentTime = getCurrentTime();
|
829 | advanceTimers(currentTime);
|
830 | var firstTask = peek(taskQueue);
|
831 | return firstTask !== currentTask && currentTask !== null && firstTask !== null && firstTask.callback !== null && firstTask.startTime <= currentTime && firstTask.expirationTime < currentTask.expirationTime || shouldYieldToHost();
|
832 | }
|
833 |
|
834 | var unstable_requestPaint = requestPaint;
|
835 | var unstable_Profiling = enableProfiling ? {
|
836 | startLoggingProfilingEvents: startLoggingProfilingEvents,
|
837 | stopLoggingProfilingEvents: stopLoggingProfilingEvents,
|
838 | sharedProfilingBuffer: sharedProfilingBuffer
|
839 | } : null;
|
840 |
|
841 | exports.unstable_flushAllWithoutAsserting = unstable_flushAllWithoutAsserting;
|
842 | exports.unstable_flushNumberOfYields = unstable_flushNumberOfYields;
|
843 | exports.unstable_flushExpired = unstable_flushExpired;
|
844 | exports.unstable_clearYields = unstable_clearYields;
|
845 | exports.unstable_flushUntilNextPaint = unstable_flushUntilNextPaint;
|
846 | exports.unstable_flushAll = unstable_flushAll;
|
847 | exports.unstable_yieldValue = unstable_yieldValue;
|
848 | exports.unstable_advanceTime = unstable_advanceTime;
|
849 | exports.unstable_ImmediatePriority = ImmediatePriority;
|
850 | exports.unstable_UserBlockingPriority = UserBlockingPriority;
|
851 | exports.unstable_NormalPriority = NormalPriority;
|
852 | exports.unstable_IdlePriority = IdlePriority;
|
853 | exports.unstable_LowPriority = LowPriority;
|
854 | exports.unstable_runWithPriority = unstable_runWithPriority;
|
855 | exports.unstable_next = unstable_next;
|
856 | exports.unstable_scheduleCallback = unstable_scheduleCallback;
|
857 | exports.unstable_cancelCallback = unstable_cancelCallback;
|
858 | exports.unstable_wrapCallback = unstable_wrapCallback;
|
859 | exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
|
860 | exports.unstable_shouldYield = unstable_shouldYield;
|
861 | exports.unstable_requestPaint = unstable_requestPaint;
|
862 | exports.unstable_continueExecution = unstable_continueExecution;
|
863 | exports.unstable_pauseExecution = unstable_pauseExecution;
|
864 | exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
|
865 | exports.unstable_now = getCurrentTime;
|
866 | exports.unstable_forceFrameRate = forceFrameRate;
|
867 | exports.unstable_Profiling = unstable_Profiling;
|
868 | })();
|
869 | }
|