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/*
This file is part of TALER
(C) 2017 GNUnet e.V.
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* Cross-platform timers.
*
* NodeJS and the browser use slightly different timer API,
* this abstracts over these differences.
*/
/**
* Cancelable timer.
*/
export interface TimerHandle {
clear(): void;
}
class IntervalHandle {
constructor(public h: any) {
}
clear() {
clearTimeout(this.h);
}
}
class TimeoutHandle {
constructor(public h: any) {
}
clear() {
clearTimeout(this.h);
}
}
/**
* Get a performance counter in milliseconds.
*/
export let performanceNow = (() => {
if (typeof process !== "undefined" && process.hrtime) {
return () => {
const t = process.hrtime();
return t[0] * 1e9 + t[1];
};
} else if (typeof "performance" !== "undefined") {
return () => performance.now();
} else {
return () => 0;
}
})();
/**
* Call a function every time the delay given in milliseconds passes.
*/
export function every(delayMs: number, callback: () => void): TimerHandle {
return new IntervalHandle(setInterval(callback, delayMs));
}
/**
* Call a function after the delay given in milliseconds passes.
*/
export function after(delayMs: number, callback: () => void): TimerHandle {
return new TimeoutHandle(setInterval(callback, delayMs));
}
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