Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 | 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 66190x 66190x 66190x 23x 535639x 535639x 535639x 23x 23x 23x 23x 33095x 33095x 33095x 33095x 33095x 5697x 5697x 33095x 23x 200590x 200590x 200590x 203960x 682529x 682529x 682529x 682529x 682529x 682529x 91335x 682114x 591183x 591183x 591183x 591183x 591183x 591183x 591183x 591183x 591183x 682529x 682234x 682234x 682234x 681085x 681085x 681085x 202505x 200590x 200590x 200590x 200590x 23x 23x 23x 684977x 684977x 684977x 684977x 684977x 684863x 684863x 684863x 684977x 684977x 684977x 684977x 684977x 25966x 25966x 25966x 25966x 684863x 684863x 684959x 684862x 684862x 684862x 684862x 684862x 684862x 684862x 684862x 684862x 684966x 684849x 684977x 23x 524x 524x 524x 524x 524x 524x 524x 524x 524x 524x 23x 23x 23x 534x 534x 534x 534x 534x 534x 534x 534x 534x 534x 534x 23x 23x 23x 804x 804x 804x 804x 804x 804x 804x 804x 23x 23x 23x | 'use strict';
const {
Array,
FunctionPrototypeBind,
} = primordials;
const {
// For easy access to the nextTick state in the C++ land,
// and to avoid unnecessary calls into JS land.
tickInfo,
// Used to run V8's micro task queue.
runMicrotasks,
setTickCallback,
enqueueMicrotask
} = internalBinding('task_queue');
const {
setHasRejectionToWarn,
hasRejectionToWarn,
listenForRejections,
processPromiseRejections
} = require('internal/process/promises');
const {
getDefaultTriggerAsyncId,
newAsyncId,
initHooksExist,
destroyHooksExist,
emitInit,
emitBefore,
emitAfter,
emitDestroy,
symbols: { async_id_symbol, trigger_async_id_symbol }
} = require('internal/async_hooks');
const FixedQueue = require('internal/fixed_queue');
const {
validateFunction,
} = require('internal/validators');
const { AsyncResource } = require('async_hooks');
// *Must* match Environment::TickInfo::Fields in src/env.h.
const kHasTickScheduled = 0;
function hasTickScheduled() {
return tickInfo[kHasTickScheduled] === 1;
}
function setHasTickScheduled(value) {
tickInfo[kHasTickScheduled] = value ? 1 : 0;
}
const queue = new FixedQueue();
// Should be in sync with RunNextTicksNative in node_task_queue.cc
function runNextTicks() {
if (!hasTickScheduled() && !hasRejectionToWarn())
runMicrotasks();
if (!hasTickScheduled() && !hasRejectionToWarn())
return;
processTicksAndRejections();
}
function processTicksAndRejections() {
let tock;
do {
while ((tock = queue.shift()) !== null) {
const asyncId = tock[async_id_symbol];
emitBefore(asyncId, tock[trigger_async_id_symbol], tock);
try {
const callback = tock.callback;
if (tock.args === undefined) {
callback();
} else {
const args = tock.args;
switch (args.length) {
case 1: callback(args[0]); break;
case 2: callback(args[0], args[1]); break;
case 3: callback(args[0], args[1], args[2]); break;
case 4: callback(args[0], args[1], args[2], args[3]); break;
default: callback(...args);
}
}
} finally {
if (destroyHooksExist())
emitDestroy(asyncId);
}
emitAfter(asyncId);
}
runMicrotasks();
} while (!queue.isEmpty() || processPromiseRejections());
setHasTickScheduled(false);
setHasRejectionToWarn(false);
}
// `nextTick()` will not enqueue any callback when the process is about to
// exit since the callback would not have a chance to be executed.
function nextTick(callback) {
validateFunction(callback, 'callback');
if (process._exiting)
return;
let args;
switch (arguments.length) {
case 1: break;
case 2: args = [arguments[1]]; break;
case 3: args = [arguments[1], arguments[2]]; break;
case 4: args = [arguments[1], arguments[2], arguments[3]]; break;
default:
args = new Array(arguments.length - 1);
for (let i = 1; i < arguments.length; i++)
args[i - 1] = arguments[i];
}
if (queue.isEmpty())
setHasTickScheduled(true);
const asyncId = newAsyncId();
const triggerAsyncId = getDefaultTriggerAsyncId();
const tickObject = {
[async_id_symbol]: asyncId,
[trigger_async_id_symbol]: triggerAsyncId,
callback,
args
};
if (initHooksExist())
emitInit(asyncId, 'TickObject', triggerAsyncId, tickObject);
queue.push(tickObject);
}
function runMicrotask() {
this.runInAsyncScope(() => {
const callback = this.callback;
try {
callback();
} finally {
this.emitDestroy();
}
});
}
const defaultMicrotaskResourceOpts = { requireManualDestroy: true };
function queueMicrotask(callback) {
validateFunction(callback, 'callback');
const asyncResource = new AsyncResource(
'Microtask',
defaultMicrotaskResourceOpts
);
asyncResource.callback = callback;
enqueueMicrotask(FunctionPrototypeBind(runMicrotask, asyncResource));
}
module.exports = {
setupTaskQueue() {
// Sets the per-isolate promise rejection callback
listenForRejections();
// Sets the callback to be run in every tick.
setTickCallback(processTicksAndRejections);
return {
nextTick,
runNextTicks
};
},
queueMicrotask
};
|