From 708f6b3c7b8b6e9844d114683543054e268dc53f Mon Sep 17 00:00:00 2001 From: JK Kim Date: Mon, 9 Apr 2018 19:22:50 -0700 Subject: [PATCH 1/3] Adding initial promise end point --- lib/Semaphore.js | 6 + package-lock.json | 1214 +++++++++++++++++++++++++++++++++++++++++++++ test/semaphore.js | 32 +- 3 files changed, 1251 insertions(+), 1 deletion(-) create mode 100644 package-lock.json diff --git a/lib/Semaphore.js b/lib/Semaphore.js index 9dbc5b1..6a2ec79 100644 --- a/lib/Semaphore.js +++ b/lib/Semaphore.js @@ -16,6 +16,12 @@ Semaphore.prototype.wait = function (cb) { } }; +Semaphore.prototype.waitAsync = function () { + var self = this; + return new Promise(function (resolve, reject) { + self.wait(resolve); + }); +} Semaphore.prototype.signal = function () { this._count += 1; diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..99f8e83 --- /dev/null +++ b/package-lock.json @@ -0,0 +1,1214 @@ +{ + "name": "locks", + "version": "0.2.2", + 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} + }, + "window-size": { + "version": "0.1.4", + "resolved": "https://registry.npmjs.org/window-size/-/window-size-0.1.4.tgz", + "integrity": "sha1-+OGqHuWlPsW/FR/6CXQqatdpeHY=", + "dev": true + } + } + } + } +} diff --git a/test/semaphore.js b/test/semaphore.js index fffc4fd..560cf4d 100644 --- a/test/semaphore.js +++ b/test/semaphore.js @@ -28,9 +28,39 @@ function testMany(t, cb) { }, 0); } +function testPromise(t, cb) { + var sem = locks.createSemaphore(2); // 2 available resources + + function fn() { + if (Math.random() < 0.5) { + process.nextTick(function () { + sem.signal(); + }); + } else { + sem.signal(); + } + } + + var prom = Promise.resolve(); + for (var i = 0; i < 100; i++) { + prom = prom.then(function () { + return sem.waitAsync().then(fn); + }); + } + + prom.then(function() { + t.equal(sem._count, 2, 'Still 2 available resources'); + t.equal(sem._waiting.length, 0, 'Nobody waiting'); + cb(); + }).catch(function(e) { + cb(e); + }); +} test('Semaphore', function (t) { testMany(t, function () { - t.end(); + testPromise(t, function() { + t.end(); + }); }); }); From fb020a10cf10f44502398636219fe21c415071f8 Mon Sep 17 00:00:00 2001 From: JK Kim Date: Sat, 12 May 2018 17:53:39 -0700 Subject: [PATCH 2/3] change dir --- lib/Semaphore.js | 7 ----- package.json | 2 +- promise/index.js | 9 ++++++ promise/lib/SemaphorePromise.js | 17 +++++++++++ promise/test/semaphorePromise.js | 48 ++++++++++++++++++++++++++++++++ test/semaphore.js | 32 +-------------------- 6 files changed, 76 insertions(+), 39 deletions(-) create mode 100644 promise/index.js create mode 100644 promise/lib/SemaphorePromise.js create mode 100644 promise/test/semaphorePromise.js diff --git a/lib/Semaphore.js b/lib/Semaphore.js index 6a2ec79..a7a7361 100644 --- a/lib/Semaphore.js +++ b/lib/Semaphore.js @@ -16,13 +16,6 @@ Semaphore.prototype.wait = function (cb) { } }; -Semaphore.prototype.waitAsync = function () { - var self = this; - return new Promise(function (resolve, reject) { - self.wait(resolve); - }); -} - Semaphore.prototype.signal = function () { this._count += 1; diff --git a/package.json b/package.json index 2942d16..b5ed3cd 100644 --- a/package.json +++ b/package.json @@ -15,7 +15,7 @@ ], "main": "index.js", "scripts": { - "test": "tape test/*.js | tap-spec", + "test": "tape test/*.js promise/test/*.js| tap-spec", "cover": "rm -rf .nyc_output && nyc --silent --all tape test/*.js > /dev/null 2>&1 && nyc report" }, "repository": "https://github.com/Wizcorp/locks", diff --git a/promise/index.js b/promise/index.js new file mode 100644 index 0000000..57c12e2 --- /dev/null +++ b/promise/index.js @@ -0,0 +1,9 @@ +var Semaphore = require('./lib/SemaphorePromise'); + + +exports.Semaphore = Semaphore; + + +exports.createSemaphore = function (initialCount) { + return new Semaphore(initialCount); +}; diff --git a/promise/lib/SemaphorePromise.js b/promise/lib/SemaphorePromise.js new file mode 100644 index 0000000..d74ab48 --- /dev/null +++ b/promise/lib/SemaphorePromise.js @@ -0,0 +1,17 @@ +var Semaphore = require('../../lib/Semaphore'); + +function SemaphorePromise (initialCount) { + this._count = initialCount || 1; + this._waiting = []; +} + +module.exports = SemaphorePromise; + +SemaphorePromise.prototype.wait = function () { + var self = this; + return new Promise(function (resolve, reject) { + self._wait(resolve); + }); +} +SemaphorePromise.prototype.signal = Semaphore.prototype.signal +SemaphorePromise.prototype._wait = Semaphore.prototype.wait diff --git a/promise/test/semaphorePromise.js b/promise/test/semaphorePromise.js new file mode 100644 index 0000000..47aae94 --- /dev/null +++ b/promise/test/semaphorePromise.js @@ -0,0 +1,48 @@ +var locks = require('../'); +var test = require('tape'); + +function testPromise(t, cb) { + var availableResources = 2; + var parallelRunning = 0; + var executionCount = 0; + var sem = locks.createSemaphore(availableResources); // 2 available resources + + function fn() { + if (Math.random() < 0.5) { + process.nextTick(function () { + sem.signal(); + parallelRunning--; + }); + } else { + sem.signal(); + parallelRunning--; + } + } + + var prom = Promise.resolve(); + var maxParallel = 0; + for (var i = 0; i < 100; i++) { + prom = prom.then(function () { + maxParallel = (parallelRunning > maxParallel ? parallelRunning : maxParallel); + parallelRunning++; + executionCount++; + return sem.wait().then(fn); + }); + } + + prom.then(() => { + t.ok(maxParallel > 0 && maxParallel <= availableResources, 'Ensure parallelism level is under the resource limit') + t.equal(executionCount, 100, 'ensure execution count') + t.equal(sem._waiting.length, 0, 'Nobody waiting'); + cb(); + }).catch((e) => { + cb(e); + }) +} + + +test('Semaphore Promise', function (t) { + testPromise(t, function () { + t.end(); + }); +}); diff --git a/test/semaphore.js b/test/semaphore.js index 560cf4d..fffc4fd 100644 --- a/test/semaphore.js +++ b/test/semaphore.js @@ -28,39 +28,9 @@ function testMany(t, cb) { }, 0); } -function testPromise(t, cb) { - var sem = locks.createSemaphore(2); // 2 available resources - - function fn() { - if (Math.random() < 0.5) { - process.nextTick(function () { - sem.signal(); - }); - } else { - sem.signal(); - } - } - - var prom = Promise.resolve(); - for (var i = 0; i < 100; i++) { - prom = prom.then(function () { - return sem.waitAsync().then(fn); - }); - } - - prom.then(function() { - t.equal(sem._count, 2, 'Still 2 available resources'); - t.equal(sem._waiting.length, 0, 'Nobody waiting'); - cb(); - }).catch(function(e) { - cb(e); - }); -} test('Semaphore', function (t) { testMany(t, function () { - testPromise(t, function() { - t.end(); - }); + t.end(); }); }); From a76ee6ed0128a17e8ee57f43acf5cefb010e7d36 Mon Sep 17 00:00:00 2001 From: JK Kim Date: Sun, 13 May 2018 17:21:20 -0700 Subject: [PATCH 3/3] fix spacing --- package.json | 2 +- promise/lib/SemaphorePromise.js | 10 ++++----- promise/test/semaphorePromise.js | 36 ++++++++++++++++---------------- 3 files changed, 24 insertions(+), 24 deletions(-) diff --git a/package.json b/package.json index b5ed3cd..980889a 100644 --- a/package.json +++ b/package.json @@ -15,7 +15,7 @@ ], "main": "index.js", "scripts": { - "test": "tape test/*.js promise/test/*.js| tap-spec", + "test": "tape test/*.js promise/test/*.js | tap-spec", "cover": "rm -rf .nyc_output && nyc --silent --all tape test/*.js > /dev/null 2>&1 && nyc report" }, "repository": "https://github.com/Wizcorp/locks", diff --git a/promise/lib/SemaphorePromise.js b/promise/lib/SemaphorePromise.js index d74ab48..cf0dd4c 100644 --- a/promise/lib/SemaphorePromise.js +++ b/promise/lib/SemaphorePromise.js @@ -1,17 +1,17 @@ var Semaphore = require('../../lib/Semaphore'); function SemaphorePromise (initialCount) { - this._count = initialCount || 1; + this._count = initialCount || 1; this._waiting = []; } module.exports = SemaphorePromise; SemaphorePromise.prototype.wait = function () { - var self = this; - return new Promise(function (resolve, reject) { - self._wait(resolve); - }); + var self = this; + return new Promise(function (resolve, reject) { + self._wait(resolve); + }); } SemaphorePromise.prototype.signal = Semaphore.prototype.signal SemaphorePromise.prototype._wait = Semaphore.prototype.wait diff --git a/promise/test/semaphorePromise.js b/promise/test/semaphorePromise.js index 47aae94..5a552a3 100644 --- a/promise/test/semaphorePromise.js +++ b/promise/test/semaphorePromise.js @@ -2,42 +2,42 @@ var locks = require('../'); var test = require('tape'); function testPromise(t, cb) { - var availableResources = 2; - var parallelRunning = 0; - var executionCount = 0; - var sem = locks.createSemaphore(availableResources); // 2 available resources + var availableResources = 2; + var parallelRunning = 0; + var executionCount = 0; + var sem = locks.createSemaphore(availableResources); // 2 available resources function fn() { if (Math.random() < 0.5) { process.nextTick(function () { sem.signal(); - parallelRunning--; + parallelRunning--; }); } else { sem.signal(); - parallelRunning--; + parallelRunning--; } } var prom = Promise.resolve(); - var maxParallel = 0; + var maxParallel = 0; for (var i = 0; i < 100; i++) { prom = prom.then(function () { - maxParallel = (parallelRunning > maxParallel ? parallelRunning : maxParallel); - parallelRunning++; - executionCount++; + maxParallel = (parallelRunning > maxParallel ? parallelRunning : maxParallel); + parallelRunning++; + executionCount++; return sem.wait().then(fn); }); } - prom.then(() => { - t.ok(maxParallel > 0 && maxParallel <= availableResources, 'Ensure parallelism level is under the resource limit') - t.equal(executionCount, 100, 'ensure execution count') - t.equal(sem._waiting.length, 0, 'Nobody waiting'); - cb(); - }).catch((e) => { - cb(e); - }) + prom.then(() => { + t.ok(maxParallel > 0 && maxParallel <= availableResources, 'Ensure parallelism level is under the resource limit') + t.equal(executionCount, 100, 'ensure execution count') + t.equal(sem._waiting.length, 0, 'Nobody waiting'); + cb(); + }).catch((e) => { + cb(e); + }) }