Sha256: 1b1a0c9cb3670b64dbcdaaffc77ed3a266059565b53f22b91a8ff68b1dccb3b6
Contents?: true
Size: 1.06 KB
Versions: 14
Compression:
Stored size: 1.06 KB
Contents
// Reference counter, useful for garbage collector like functionality
'use strict';
var d = require('d')
, extensions = require('../lib/registered-extensions')
, create = Object.create, defineProperties = Object.defineProperties;
extensions.refCounter = function (ignore, conf, options) {
var cache, postfix;
cache = create(null);
postfix = (options.async && extensions.async) ? 'async' : '';
conf.on('set' + postfix, function (id, length) { cache[id] = length || 1; });
conf.on('get' + postfix, function (id) { ++cache[id]; });
conf.on('delete' + postfix, function (id) { delete cache[id]; });
conf.on('clear' + postfix, function () { cache = {}; });
defineProperties(conf.memoized, {
deleteRef: d(function () {
var id = conf.get(arguments);
if (id === null) return null;
if (!cache[id]) return null;
if (!--cache[id]) {
conf.delete(id);
return true;
}
return false;
}),
getRefCount: d(function () {
var id = conf.get(arguments);
if (id === null) return 0;
if (!cache[id]) return 0;
return cache[id];
})
});
};
Version data entries
14 entries across 7 versions & 1 rubygems