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Improve IPC performance.

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Reading of JSON data off the buffer, 10-15% performance increase.

Fixes #1864.
This commit is contained in:
Daniel Ennis 2011-10-11 20:54:55 -04:00 committed by Ryan Dahl
parent 73b4b86d29
commit 59be975322
1 changed files with 5 additions and 4 deletions
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9
lib/child_process.js
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@ -77,14 +77,15 @@ function setupChannel(target, channel) {
if (pool) { if (pool) {
jsonBuffer += pool.toString('ascii', offset, offset + length); jsonBuffer += pool.toString('ascii', offset, offset + length);
var i; var i, start = 0;
while ((i = jsonBuffer.indexOf('\n')) >= 0) { while ((i = jsonBuffer.indexOf('\n', start)) >= 0) {
var json = jsonBuffer.slice(0, i); var json = jsonBuffer.slice(start, i);
var message = JSON.parse(json); var message = JSON.parse(json);
jsonBuffer = jsonBuffer.slice(i + 1);
target.emit('message', message, recvHandle); target.emit('message', message, recvHandle);
start = i+1;
} }
jsonBuffer = jsonBuffer.slice(start);
} else { } else {
channel.close(); channel.close();