depot - monorepo for the virus lounge

Age	Commit message (Collapse)	Author	Files	Lines
2012-08-12	Add some basic profiling support to the evaluator	Eelco Dolstra	1	-0/+3
	Setting the environment variable NIX_COUNT_CALLS to 1 enables some basic profiling in the evaluator. It will count calls to functions and primops as well as evaluations of attributes. For example, to see where evaluation of a NixOS configuration spends its time: $ NIX_SHOW_STATS=1 NIX_COUNT_CALLS=1 ./src/nix-instantiate/nix-instantiate '<nixos>' -A system --readonly-mode ... calls to 39 primops: 239532 head 233962 tail 191252 hasAttr ... calls to 1595 functions: 224157 `/nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/pkgs/lib/lists.nix:17:19' 221767 `/nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/pkgs/lib/lists.nix:17:14' 221767 `/nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/pkgs/lib/lists.nix:17:10' ... evaluations of 7088 attributes: 167377 undefined position 132459 `/nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/pkgs/lib/attrsets.nix:119:41' 47322 `/nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/pkgs/lib/attrsets.nix:13:21' ...
2012-08-01	Drop the block count in the garbage collector	Eelco Dolstra	2	-15/+9

2012-07-26	Set permissions on temporary build directories to 0700	Eelco Dolstra	2	-3/+3
	Fixes #39.
2012-07-18	Use "#pragma once" to prevent repeated header file inclusion	Eelco Dolstra	7	-34/+7

2012-06-25	When using chroots, use a private PID namespace	Eelco Dolstra	1	-2/+5
	In a private PID namespace, processes have PIDs that are separate from the rest of the system. The initial child gets PID 1. Processes in the chroot cannot see processes outside of the chroot. This improves isolation between builds. However, processes on the outside can see processes in the chroot and send signals to them (if they have appropriate rights). Since the builder gets PID 1, it serves as the reaper for zombies in the chroot. This might turn out to be a problem. In that case we'll need to have a small PID 1 process that sits in a loop calling wait().
2012-03-18	Drop the externals directory	Eelco Dolstra	1	-1/+3
	Nix now requires SQLite and bzip2 to be pre-installed. SQLite is detected using pkg-config. We required DBD::SQLite anyway, so depending on SQLite is not a big problem. The --with-bzip2, --with-openssl and --with-sqlite flags are gone.
2012-03-05	Set the close-on-exec flag on file descriptors	Eelco Dolstra	2	-0/+15

2012-02-15	On Linux, make the Nix store really read-only by using the immutable bit	Eelco Dolstra	4	-2/+91
	I was bitten one time too many by Python modifying the Nix store by creating *.pyc files when run as root. On Linux, we can prevent this by setting the immutable bit on files and directories (as in ‘chattr +i’). This isn't supported by all filesystems, so it's not an error if setting the bit fails. The immutable bit is cleared by the garbage collector before deleting a path. The only tricky aspect is in optimiseStore(), since it's forbidden to create hard links to an immutable file. Thus optimiseStore() temporarily clears the immutable bit before creating the link.
2012-02-09	Use data() instead of c_str() where appropriate	Eelco Dolstra	3	-7/+7

2011-12-22	* In the garbage collector, delete invalid paths before deleting	Eelco Dolstra	2	-1/+10
	unreachable paths. This matters when using --max-freed etc.: unreachable paths could become reachable again, so it's nicer to keep them if there is "real" garbage to be deleted. Also, don't use readDirectory() but read the Nix store and delete invalid paths in parallel. This reduces GC latency on very large Nix stores.
2011-12-16	* importPath() -> importPaths(). Because of buffering of the input	Eelco Dolstra	2	-7/+13
	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	2	-3/+20

2011-12-16	* Make the import operation through the daemon much more efficient	Eelco Dolstra	2	-29/+44
	(way fewer roundtrips) by allowing the client to send data in bigger chunks. * Some refactoring.
2011-12-16	* Clean up exception handling.	Eelco Dolstra	2	-3/+10

2011-12-15	* Refactoring: move sink/source buffering into separate classes.	Eelco Dolstra	4	-76/+116
	* 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	2	-10/+32
	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	2	-7/+37
	system calls / context switches when dumping a NAR and in the worker protocol.
2011-12-02	* Move parseHash16or32 into libutil, and use in nix-hash.	Eelco Dolstra	2	-0/+19

2011-02-09	* Sync with the trunk.	Eelco Dolstra	1	-2/+0

2011-01-14	Remove useless <config.h> inclusion from public header.	Ludovic Courtès	1	-2/+0

2010-12-13	* nix-instantiate: return exit status 100 to denote a permanent build	Eelco Dolstra	2	-3/+5
	failure. The build hook can use this to distinguish between transient and permanent failures on the remote side.
2010-12-13	* createDirs(path): if path already exists, make sure it's a	Eelco Dolstra	2	-20/+26
	directory. * Provide a C++ wrapper around lstat().
2010-11-16	* Store the size of a store path in the database (to be precise, the	Eelco Dolstra	2	-6/+11
	size of the NAR serialisation of the path, i.e., `nix-store --dump PATH'). This is useful for Hydra.
2010-11-16	* Sync with the trunk.	Eelco Dolstra	1	-0/+2

2010-10-04	* Make sure that config.h is included before the system headers,	Eelco Dolstra	1	-0/+2
	because it defines _FILE_OFFSET_BITS. Without this, on OpenSolaris the system headers define it to be 32, and then the 32-bit stat() ends up being called with a 64-bit "struct stat", or vice versa. This also ensures that we get 64-bit file sizes everywhere. * Remove the redundant call to stat() in parseExprFromFile(). The file cannot be a symlink because that's the exit condition of the loop before.
2010-10-04	* Sync with the trunk.	Eelco Dolstra	1	-1/+10

2010-10-04	* In printMsg(), ignore failing writes to stderr if we're in an	Eelco Dolstra	1	-1/+10
	exception handler, otherwise throw an exception. We need to ignore write errors in exception handlers to ensure that cleanup code runs to completion if the other side of stderr has been closed unexpectedly.
2010-08-30	* When using the build hook, distinguish between the stderr of the	Eelco Dolstra	1	-1/+1
	hook script proper, and the stdout/stderr of the builder. Only the latter should be saved in /nix/var/log/nix/drvs. * Allow the verbosity to be set through an option. * Added a flag --quiet to lower the verbosity level.
2010-08-27	* Experimental feature: allow a derivation to tell the build hook that	Eelco Dolstra	2	-0/+16
	it requires a certain feature on the build machine, e.g. requiredSystemFeatures = [ "kvm" ]; We need this in Hydra to make sure that builds that require KVM support are forwarded to machines that have KVM support. Probably this should also be enforced for local builds.
2010-08-04	* Sync with the trunk.	Eelco Dolstra	1	-0/+1

2010-06-24	src/libutil/util.cc: include <limit.h> to ensure that PATH_MAX is defined	Peter Simons	1	-0/+1

2010-05-12	* Sync with the trunk.	Eelco Dolstra	7	-651/+57

2010-05-07	* Sync with the trunk.	Eelco Dolstra	1	-0/+1

2010-05-04	* Revert r15436. This was a workaround for a bug in btrfs which seems	Eelco Dolstra	2	-9/+0
	to have been fixed now.
2010-04-20	* Sync with the trunk.	Eelco Dolstra	2	-4/+7

2010-04-19	* Don't use the ATerm library for parsing/printing .drv files.	Eelco Dolstra	5	-136/+56

2010-04-14	* Remove more obsolete code.	Eelco Dolstra	3	-463/+2

2010-04-12	* Remove some obsolete functions.	Eelco Dolstra	2	-52/+0

2010-03-31	Escape `>' signs in the XML output.	Ludovic Courtès	1	-0/+1
	* src/libutil/xml-writer.cc (nix::XMLWriter::writeAttrs): Escape `>'.
2010-03-23	(no commit message)	Eelco Dolstra	1	-1/+1

2010-03-19	* Clean up error messages in killUser().	Eelco Dolstra	1	-4/+6

2010-03-09	* In `nix-store --export', abort if the contents of a path has	Eelco Dolstra	2	-1/+9
	changed. This prevents corrupt paths from spreading to other machines. Note that checking the hash is cheap because we're hashing anyway (because of the --sign feature).
2010-03-04	* Synced with the trunk.	Eelco Dolstra	1	-2/+0

2010-03-02	* When using the included sqlite/aterm libraries, build with	Eelco Dolstra	2	-2/+3
	--enable-shared. * In libutil/libstore/libexpr etc., link against sqlite and aterm. * Some more header file hygiene.
2010-02-24	* Don't use fdatasync since it doesn't work on Snow Leopard.	Eelco Dolstra	2	-7/+1
	* Don't refer to config.h in util.hh, because config.h is not installed (http://hydra.nixos.org/build/303053).
2010-02-24	* Remove the fdatasync check since it's no longer needed.	Eelco Dolstra	2	-7/+2

2010-02-10	Don't rely on `PATH_MAX' on GNU.	Ludovic Courtès	1	-0/+10

2010-02-02	* Remove most Cygwin-specific code. Cygwin 1.7 implements advisory	Eelco Dolstra	1	-12/+0
	POSIX locks, and simulates Unix-style file deletion semantics sufficiently. Note that this means that Nix won't work on Cygwin 1.5 anymore.
2010-02-02	* If fdatasync() isn't available, use fsync().	Eelco Dolstra	1	-0/+4

2010-01-29	* Added an option "fsync-metadata" to fsync() changes to	Eelco Dolstra	2	-16/+4
	/nix/var/nix/db. * Removed the function writeStringToFile since it does (almost) the same thing as writeFile.