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Reuse the stat object on every StatWatcher poll.

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Reviewed-by: asquare
This commit is contained in:
Kinsley Wong 2013-11-22 16:49:24 -08:00
parent 44a56c93e6
commit 22f3a0c1a7
1 changed files with 21 additions and 14 deletions
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35
src/main/js/net/java/avatar/js/fs_wrap.js
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@ -550,10 +550,14 @@
function StatWatcher() {
var that = this;
this._fsPoll = new FilePollHandle(loop);
this._previous = new exports.Stats();
this._current = new exports.Stats();
this._fsPoll.setFilePollCallback(function(status, previous, current) {
if (that.onchange) {
that.onchange(new exports.Stats(current), new exports.Stats(previous), status);
that._current.update(current);
that._previous.update(previous);
that.onchange(that._current, that._previous, status);
}
});
@ -581,19 +585,22 @@
}
exports.Stats = function(stats) {
Object.defineProperty(this, 'dev', { enumerable: true, get: function() { return stats.getDev(); } });
Object.defineProperty(this, 'ino', { enumerable: true, get: function() { return stats.getIno(); } });
Object.defineProperty(this, 'mode', { enumerable: true, get: function() { return stats.getMode(); } });
Object.defineProperty(this, 'nlink', { enumerable: true, get: function() { return stats.getNlink(); } });
Object.defineProperty(this, 'uid', { enumerable: true, get: function() { return stats.getUid(); } });
Object.defineProperty(this, 'gid', { enumerable: true, get: function() { return stats.getGid(); } });
Object.defineProperty(this, 'rdev', { enumerable: true, get: function() { return stats.getRdev(); } });
Object.defineProperty(this, 'size', { enumerable: true, get: function() { return stats.getSize(); } });
Object.defineProperty(this, 'blksize', { enumerable: true, get: function() { return stats.getBlksize(); } });
Object.defineProperty(this, 'blocks', { enumerable: true, get: function() { return stats.getBlocks(); } });
Object.defineProperty(this, 'atime', { enumerable: true, get: function() { return new Date(stats.getAtime()); } });
Object.defineProperty(this, 'mtime', { enumerable: true, get: function() { return new Date(stats.getMtime()); } });
Object.defineProperty(this, 'ctime', { enumerable: true, get: function() { return new Date(stats.getCtime()); } });
this.update = function(stats) {
this.dev = stats ? stats.getDev() : undefined;
this.ino = stats ? stats.getIno() : undefined;
this.mode = stats ? stats.getMode() : undefined;
this.nlink = stats ? stats.getNlink() : undefined;
this.uid = stats ? stats.getUid() : undefined;
this.gid = stats ? stats.getGid() : undefined;
this.rdev = stats ? stats.getRdev() : undefined;
this.size = stats ? stats.getSize() : undefined;
this.blksize = stats ? stats.getBlksize() : undefined;
this.blocks = stats ? stats.getBlocks() : undefined;
this.atime = stats ? new Date(stats.getAtime()) : undefined;
this.mtime = stats ? new Date(stats.getMtime()) : undefined;
this.ctime = stats ? new Date(stats.getMtime()) : undefined;
}
this.update(stats);
}
var newError = function(exception) {