lix -

Age	Commit message (Collapse)	Author
2018-03-19	serialise.cc: remove pessimising move	Will Dietz
	from clang6: src/libutil/serialise.cc:189:23: warning: moving a temporary object prevents copy elision [-Wpessimizing-move]
2018-03-16	Reduce substitution memory consumption	Eelco Dolstra
	copyStorePath() now pipes the output of srcStore->narFromPath() directly into dstStore->addToStore(). The sink used by the former is converted into a source usable by the latter using boost::coroutine2. This is based on [1]. This reduces the maximum resident size of $ nix build --store ~/my-nix/ /nix/store/b0zlxla7dmy1iwc3g459rjznx59797xy-binutils-2.28.1 --substituters file:///tmp/binary-cache-xz/ --no-require-sigs from 418592 KiB to 53416 KiB. (The previous commit also reduced the runtime from ~4.2s to ~3.4s, not sure why.) A further improvement will be to download files into a Sink. [1] https://github.com/NixOS/nix/compare/master...Mathnerd314:dump-fix-coroutine#diff-dcbcac55a634031f9cc73707da6e4b18 Issue #1969.
2018-02-13	Fix #1762	Linus Heckemann
	nix-store --export, nix-store --dump, and nix dump-path would previously fail silently if writing the data out failed, because a) FdSink::write ignored exceptions, and b) the commands relied on FdSink's destructor, which ignores exceptions, to flush the data out. This could cause rather opaque issues with installing nixos, because nix-store --export would happily proceed even if it couldn't write its data out (e.g. if nix-store --import on the other side of the pipe failed). This commit adds tests that expose these issues in the nix-store commands, and fixes them for all three.
2017-03-01	readString(): Read directly into std::string	Eelco Dolstra
	When reading a huge string, this halves memory consumption. (Strictly speaking, this appears only valid in C++17, but who cares...)
2017-03-01	Handle importing NARs containing files greater than 4 GiB	Eelco Dolstra
	Also templatize readInt() to work for various integer types.
2017-01-16	AutoDeleteArray -> std::unique_ptr	Eelco Dolstra
	Also, switch to C++14 for std::make_unique.
2016-09-21	printMsg(lvlError, ...) -> printError(...) etc.	Eelco Dolstra

2016-07-13	Make Buffered{Source,Sink} move-safe	Shea Levy

2016-03-04	Eliminate some large string copying	Eelco Dolstra

2016-02-26	FdSource: track number of bytes read	Eelco Dolstra

2016-02-24	Remove bad daemon connections from the pool	Eelco Dolstra
	This is necessary for long-running processes like hydra-queue-runner: if a nix-daemon worker is killed, we need to stop reusing that connection.
2015-09-03	Implement buildDerivation() via the daemon	Eelco Dolstra

2015-07-20	More cleanup	Eelco Dolstra

2015-07-17	OCD: foreach -> C++11 ranged for	Eelco Dolstra

2015-07-17	Allow remote builds without sending the derivation closure	Eelco Dolstra
	Previously, to build a derivation remotely, we had to copy the entire closure of the .drv file to the remote machine, even though we only need the top-level derivation. This is very wasteful: the closure can contain thousands of store paths, and in some Hydra use cases, include source paths that are very large (e.g. Git/Mercurial checkouts). So now there is a new operation, StoreAPI::buildDerivation(), that performs a build from an in-memory representation of a derivation (BasicDerivation) rather than from a on-disk .drv file. The only files that need to be in the Nix store are the sources of the derivation (drv.inputSrcs), and the needed output paths of the dependencies (as described by drv.inputDrvs). "nix-store --serve" exposes this interface. Note that this is a privileged operation, because you can construct a derivation that builds any store path whatsoever. Fixing this will require changing the hashing scheme (i.e., the output paths should be computed from the other fields in BasicDerivation, allowing them to be verified without access to other derivations). However, this would be quite nice because it would allow .drv-free building (e.g. "nix-env -i" wouldn't have to write any .drv files to disk). Fixes #173.
2014-06-10	Print a warning when loading a large path into memory	Eelco Dolstra
	I.e. if you have a derivation with src = ./huge-directory; you'll get a warning that this is not a good idea.
2014-03-12	Remove unnecessary null pointer checks	Eelco Dolstra
	Fixes #225.
2013-06-07	Process stderr from substituters while doing have/info queries	Eelco Dolstra

2012-02-09	Use data() instead of c_str() where appropriate	Eelco Dolstra

2011-12-16	* importPath() -> importPaths(). Because of buffering of the input	Eelco Dolstra
	stream it's now necessary for the daemon to process the entire sequence of exported paths, rather than letting the client do it.
2011-12-16	* Avoid expensive conversions from char arrays to STL strings.	Eelco Dolstra

2011-12-16	* Make the import operation through the daemon much more efficient	Eelco Dolstra
	(way fewer roundtrips) by allowing the client to send data in bigger chunks. * Some refactoring.
2011-12-16	* Clean up exception handling.	Eelco Dolstra

2011-12-15	* Refactoring: move sink/source buffering into separate classes.	Eelco Dolstra
	* Buffer the HashSink. This speeds up hashing a bit because it prevents lots of calls to the hash update functions (e.g. nix-hash went from 9.3s to 8.7s of user time on the closure of my /var/run/current-system).
2011-12-15	* Buffer reads in FdSource. Together with write buffering, this	Eelco Dolstra
	significantly cuts down the number of syscalls (e.g., for "nix-store -qR /var/run/current-system" via the daemon, it reduced the number of syscalls in the client from 29134 to 4766 and in the daemon from 44266 to 20666).
2011-12-14	* Buffer writes in FdSink. This significantly reduces the number of	Eelco Dolstra
	system calls / context switches when dumping a NAR and in the worker protocol.
2009-03-22	* NAR archives: handle files larger than 2^32 bytes. Previously it	Eelco Dolstra
	would just silently store only (fileSize % 2^32) bytes. * Use posix_fallocate if available when unpacking archives. * Provide a better error message when trying to unpack something that isn't a NAR archive.
2008-06-18	* Some refactoring: put the GC options / results in separate structs.	Eelco Dolstra
	* The garbage collector now also prints the number of blocks freed.
2008-05-21	* GCC 4.3.0 (Fedora 9) compatibility fixes. Reported by Gour and	Eelco Dolstra
	Armijn Hemel.
2006-12-04	* Daemon mode (`nix-worker --daemon'). Clients connect to the server	Eelco Dolstra
	via the Unix domain socket in /nix/var/nix/daemon.socket. The server forks a worker process per connection. * readString(): use the heap, not the stack. * Some protocol fixes.
2006-11-30	* More remote operations.	Eelco Dolstra
	* Added new operation hasSubstitutes(), which is more efficient than querySubstitutes().size() > 0.
2006-11-30	* Skeleton of the privileged worker program.	Eelco Dolstra
	* Some refactoring: put the NAR archive integer/string serialisation code in a separate file so it can be reused by the worker protocol implementation.