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authorEelco Dolstra <edolstra@gmail.com>2018-03-26T21·36+0200
committerEelco Dolstra <edolstra@gmail.com>2018-05-30T11·26+0200
commit6185d25e523a3cd223dd6f6aca10cf6ff15b4823 (patch)
tree87562dc111974054360ae7eb74b842b7fa4ec32d /src/libstore/fs-accessor.hh
parent23d6bb583afb2b98cc9152911c12a37ba56d1e39 (diff)
Make 'nix copy --to daemon' run in constant memory (daemon side)
Continuation of 97002b684c902dadcd351a67208f9c2a88ff8f8f. This makes
the daemon use constant memory. For example, it reduces the daemon's
maximum RSS on

  $ nix copy --from ~/my-nix --to daemon /nix/store/1n7x0yv8vq6zi90hfmian84vdhd04bgp-blender-2.79a

from 264 MiB to 7 MiB.

We now use a TunnelSource to prevent the connection from ending up in
an undefined state if an exception is thrown while the NAR is being
sent.

Issue https://github.com/NixOS/nix/issues/1681.
Diffstat (limited to 'src/libstore/fs-accessor.hh')
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