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authorEelco Dolstra <edolstra@gmail.com>2016-11-16T15·21+0100
committerEelco Dolstra <edolstra@gmail.com>2016-11-16T15·21+0100
commit4be4f6de56f4de77f6a376f1a40ed75eb641bb89 (patch)
treedbaa5c53f816f85cde44e0c89661b67a6a0a4b92 /src/libstore/derivations.cc
parent10ae8fabf1e7e7bd8817b93560df7484c3bd18b8 (diff)
S3BinaryCacheStore:: Eliminate a string copy while uploading
This cuts hydra-queue-runner's peak memory usage by about a third.
Diffstat (limited to 'src/libstore/derivations.cc')
-rw-r--r--src/libstore/derivations.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libstore/derivations.cc b/src/libstore/derivations.cc
index d934bda38225..5562d46892a8 100644
--- a/src/libstore/derivations.cc
+++ b/src/libstore/derivations.cc
@@ -155,7 +155,7 @@ static StringSet parseStrings(std::istream & str, bool arePaths)
 static Derivation parseDerivation(const string & s)
 {
     Derivation drv;
-    std::istringstream str(s);
+    istringstream_nocopy str(s);
     expect(str, "Derive([");
 
     /* Parse the list of outputs. */