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 | 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 16735x 16735x 16735x 24x 24x 16735x 16735x 169x 169x 169x 169x 169x 169x 169x 169x 169x 169x 169x 169x 169x 169x 16735x 24x 563x 563x 563x 38x 38x 38x 563x 24x 24x 24x 24x 24x | 'use strict';
const {
FunctionPrototypeBind,
SafeMap,
} = primordials;
const {
errnoException,
} = require('internal/errors');
const { signals } = internalBinding('constants').os;
let Signal;
const signalWraps = new SafeMap();
function isSignal(event) {
return typeof event === 'string' && signals[event] !== undefined;
}
// Detect presence of a listener for the special signal types
function startListeningIfSignal(type) {
if (isSignal(type) && !signalWraps.has(type)) {
if (Signal === undefined)
Signal = internalBinding('signal_wrap').Signal;
const wrap = new Signal();
wrap.unref();
wrap.onsignal = FunctionPrototypeBind(process.emit, process, type, type);
const signum = signals[type];
const err = wrap.start(signum);
if (err) {
wrap.close();
throw errnoException(err, 'uv_signal_start');
}
signalWraps.set(type, wrap);
}
}
function stopListeningIfSignal(type) {
const wrap = signalWraps.get(type);
if (wrap !== undefined && process.listenerCount(type) === 0) {
wrap.close();
signalWraps.delete(type);
}
}
module.exports = {
startListeningIfSignal,
stopListeningIfSignal
};
|