From 4be4f6de56f4de77f6a376f1a40ed75eb641bb89 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Wed, 16 Nov 2016 16:21:30 +0100
Subject: S3BinaryCacheStore:: Eliminate a string copy while uploading

This cuts hydra-queue-runner's peak memory usage by about a third.
---
 src/libstore/s3-binary-cache-store.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/libstore/s3-binary-cache-store.cc')

diff --git a/src/libstore/s3-binary-cache-store.cc b/src/libstore/s3-binary-cache-store.cc
index c11f2b06b990..1bc8576a8aef 100644
--- a/src/libstore/s3-binary-cache-store.cc
+++ b/src/libstore/s3-binary-cache-store.cc
@@ -145,7 +145,7 @@ struct S3BinaryCacheStoreImpl : public S3BinaryCacheStore
             .WithBucket(bucketName)
             .WithKey(path);
 
-        auto stream = std::make_shared<std::stringstream>(data);
+        auto stream = std::make_shared<istringstream_nocopy>(data);
 
         request.SetBody(stream);
 
-- 
cgit 1.4.1