nxkit
Version:
This is a collection of tools, independent of any other libraries
107 lines (106 loc) • 4.37 kB
JavaScript
"use strict";
/* ***** BEGIN LICENSE BLOCK *****
* Distributed under the BSD license:
*
* Copyright (c) 2015, xuewen.chu
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of xuewen.chu nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL xuewen.chu BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ***** END LICENSE BLOCK ***** */
Object.defineProperty(exports, "__esModule", { value: true });
const util_1 = require("./util");
const errno_1 = require("./errno");
function clear(self) {
clearTimeout(self.m_timeout_id);
self.m_running_id = 0;
self.m_timeout_id = 0;
self.m_run_loop = null;
}
class Monitor {
constructor(interval = 1e3, maxDuration = -1) {
this.m_running_id = 0;
this.m_timeout_id = 0;
this.m_run_loop = null;
this.m_run_starttime = 0;
this.m_interval = interval;
this.m_maxDuration = maxDuration;
}
get interval() { return this.m_interval; }
set interval(val) { this.m_interval = val; }
get maxDuration() { return this.m_maxDuration; }
set maxDuration(val) { this.m_maxDuration = val; }
start(run) {
return new Promise(async (resolve, reject) => {
if (this.m_running_id) {
reject(Error.new(errno_1.default.ERR_MONITOR_BEEN_STARTED));
}
else {
var id = util_1.default.id;
this.m_running_id = id;
this.m_run_starttime = Date.now();
var run_loop = async () => {
var r = null;
if (id == this.m_running_id) {
try {
r = await run(this);
if (id == this.m_running_id) {
if (this.m_maxDuration == -1 ||
this.m_maxDuration > (Date.now() - this.m_run_starttime)) {
this.m_timeout_id = setTimeout(run_loop, this.m_interval);
return;
}
}
}
catch (e) {
clear(this);
reject(e);
return;
}
}
clear(this);
resolve(r); // end
};
this.m_run_loop = run_loop;
run_loop();
}
});
}
stop() {
util_1.default.assert(this.m_running_id, errno_1.default.ERR_MONITOR_NOT_BEEN_STARTED);
clearTimeout(this.m_timeout_id);
this.m_running_id = 0;
this.m_timeout_id = 0;
var run_loop = this.m_run_loop;
if (run_loop) {
util_1.default.nextTick(() => {
if (run_loop === this.m_run_loop)
run_loop();
});
}
}
get running() {
return !!this.m_running_id;
}
}
exports.Monitor = Monitor;