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fs: pool size coincide with ReadStream bufferSize

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pool size of file reading in ReadableStream can be adjustable
with a bufferSize option.
This commit is contained in:
Shigeki Ohtsu 2013-01-05 01:05:27 +09:00 committed by Ben Noordhuis
parent 93591a2a88
commit 829f96bada
1 changed files with 3 additions and 4 deletions
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7
lib/fs.js
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@ -38,7 +38,6 @@ var Readable = Stream.Readable;
var Writable = Stream.Writable; var Writable = Stream.Writable;
var kMinPoolSpace = 128; var kMinPoolSpace = 128;
var kPoolSize = 40 * 1024;
var O_APPEND = constants.O_APPEND || 0; var O_APPEND = constants.O_APPEND || 0;
var O_CREAT = constants.O_CREAT || 0; var O_CREAT = constants.O_CREAT || 0;
@ -1370,8 +1369,8 @@ fs.realpath = function realpath(p, cache, cb) {
var pool; var pool;
function allocNewPool() { function allocNewPool(poolSize) {
pool = new Buffer(kPoolSize); pool = new Buffer(poolSize);
pool.used = 0; pool.used = 0;
} }
@ -1468,7 +1467,7 @@ ReadStream.prototype._read = function(n, cb) {
// discard the old pool. Can't add to the free list because // discard the old pool. Can't add to the free list because
// users might have refernces to slices on it. // users might have refernces to slices on it.
pool = null; pool = null;
allocNewPool(); allocNewPool(this._readableState.bufferSize);
} }
// Grab another reference to the pool in the case that while we're // Grab another reference to the pool in the case that while we're