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buffer: improve Buffer constructor

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Increase the performance of new Buffer construction by initializing all
properties before SetIndexedPropertiesToExternalArrayData call.

Reviewed-by: Trevor Norris <trev.norris@gmail.com>
This commit is contained in:
Kang-Hao Kenny 2014-09-19 23:14:37 +08:00 committed by Trevor Norris
parent d66adf0c85
commit 4c9b30db67
1 changed files with 1 additions and 5 deletions
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6
lib/buffer.js
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@ -66,6 +66,7 @@ function Buffer(subject, encoding) {
'size: 0x' + kMaxLength.toString(16) + ' bytes'); 'size: 0x' + kMaxLength.toString(16) + ' bytes');
} }
this.parent = null;
if (this.length <= (Buffer.poolSize >>> 1) && this.length > 0) { if (this.length <= (Buffer.poolSize >>> 1) && this.length > 0) {
if (this.length > poolSize - poolOffset) if (this.length > poolSize - poolOffset)
createPool(); createPool();
@ -217,11 +218,6 @@ Buffer.byteLength = function(str, enc) {
}; };
// pre-set for values that may exist in the future
Buffer.prototype.length = undefined;
Buffer.prototype.parent = undefined;
// toString(encoding, start=0, end=buffer.length) // toString(encoding, start=0, end=buffer.length)
Buffer.prototype.toString = function(encoding, start, end) { Buffer.prototype.toString = function(encoding, start, end) {
var loweredCase = false; var loweredCase = false;