depot - monorepo for the virus lounge

Age	Commit message (Collapse)	Author	Files	Lines
2004-06-22	* Some more diagnostics changes.	Eelco Dolstra	1	-23/+39

2004-06-22	* Well, it's better than printf.	Eelco Dolstra	1	-1/+1

2004-06-22	* Started making Nix's diagnostic messages a bit more useful.	Eelco Dolstra	1	-10/+26

2004-06-22	* Put WEXITSTATUS stuff somewhere else.	Eelco Dolstra	2	-3/+3

2004-06-22	* Reduce gratuitous cut & pasting.	Eelco Dolstra	1	-68/+55

2004-06-22	* Wrapper class around pids.	Eelco Dolstra	2	-87/+37

2004-06-22	* Substitutes should occupy a build slot.	Eelco Dolstra	1	-1/+15

2004-06-22	* Refactoring.	Eelco Dolstra	2	-20/+7

2004-06-21	* Acquire a lock on the output path when running a substitute. Also	Eelco Dolstra	1	-0/+22
	delete obstructing invalid paths.
2004-06-21	* Ugh, nasty Heisenbug due to an uninitialiased variable. The bug	Eelco Dolstra	1	-0/+1
	only caused a crash if the program was not invoked with a high verbosity level.
2004-06-21	* Remove obstructing invalid store paths add[Text]ToStore().	Eelco Dolstra	1	-0/+6

2004-06-21	* Wrap calls to registerSubstitute() in a single transaction to	Eelco Dolstra	2	-10/+6
	improve throughput. * Don't build the `substitute-rev' table for now, since it caused Theta(N^2) time and log file consumption when adding N substitutes. Maybe we can do without it.
2004-06-21	* Disable calls to fsync() since Berkeley DB's DB_TXN_WRITE_NOSYNC	Eelco Dolstra	1	-0/+8
	flag doesn't seem to work as advertised.
2004-06-20	* Re-enable support for substitutes in the normaliser.	Eelco Dolstra	3	-83/+351
	* A better substitute mechanism. Instead of generating a store expression for each store path for which we have a substitute, we can have a single store expression that builds a generic program that is invoked to build the desired store path, which is passed as an argument. This means that operations like `nix-pull' only produce O(1) files instead of O(N) files in the store when registering N substitutes. (It consumes O(N) database storage, of course, but that's not a performance problem). * Added a test for the substitute mechanism. * `nix-store --substitute' reads the substitutes from standard input, instead of from the command line. This prevents us from running into the kernel's limit on command line length.
2004-06-20	* Refactoring.	Eelco Dolstra	1	-41/+2

2004-06-19	* Re-enable build hooks.	Eelco Dolstra	1	-72/+325

2004-06-18	* Big refactoring. Move to a much more explicitly state machine based	Eelco Dolstra	3	-764/+869
	approach. This makes it much easier to add extra complexity in the normaliser / realiser (e.g., build hooks, substitutes).
2004-06-15	* Refactoring.	Eelco Dolstra	1	-82/+18

2004-06-08	* Cleanup.	Eelco Dolstra	1	-10/+17

2004-05-18	* Drain the output of the build hook to show error messages. Ugly	Eelco Dolstra	1	-4/+26
	hack.
2004-05-18	* setpgrp() is not POSIX (and on Mac OS X it's different than on	Eelco Dolstra	1	-1/+1
	Linux), so use setpgid().
2004-05-14	* execl() requires a terminating 0.	Eelco Dolstra	1	-10/+21
	* When a fast build wakes up a goal, try to start that goal in the same iteration of the startBuild() loop of run(). Otherwise no job might be started until the next job terminates.
2004-05-13	* Distributed builds and load balancing now seem to work pretty well.	Eelco Dolstra	1	-24/+74
	(Though the `build-remote.pl' script has a gigantic race condition).
2004-05-13	* Load balancing. `build-remote.pl' will only execute up to a	Eelco Dolstra	1	-1/+1
	per-machine maximum number of parallel jobs on a remote machine.
2004-05-13	* The build hooks used to implement distributed builds can now be run	Eelco Dolstra	1	-134/+346
	in parallel. Hooks are more efficient: locks on output paths are only acquired when the hook says that it is willing to accept a build job. Hooks now work in two phases. First, they should first tell Nix whether they are willing to accept a job. Nix guarantuees that no two hooks will ever be in the first phase at the same time (this simplifies the implementation of hooks, since they don't have to perform locking (?)). Second, if they accept a job, they are then responsible for building it (on the remote system), and copying the result back. These can be run in parallel with other hooks and locally executed jobs. The implementation is a bit messy right now, though. * The directory `distributed' shows a (hacky) example of a hook that distributes build jobs over a set of machines listed in a configuration file.
2004-05-12	* A switch `-j NUMBER' to set the maximum number of parallel jobs (0 =	Eelco Dolstra	3	-5/+13
	no limit). * Add missing file to distribution.
2004-05-12	* Pass to the build hook all sorts of information useful for	Eelco Dolstra	1	-6/+41
	distributing a build action to another machine. In particular, the paths in the input closures, the output paths, and successor mapping for sub-derivations.
2004-05-12	* An quick and dirty hack to support distributed builds.	Eelco Dolstra	1	-1/+21

2004-05-11	* True parallel builds. Nix can now run as many build jobs in	Eelco Dolstra	7	-286/+658
	parallel as possible (similar to GNU Make's `-j' switch). This is useful on SMP systems, but it is especially useful for doing builds on multiple machines. The idea is that a large derivation is initiated on one master machine, which then distributes sub-derivations to any number of slave machines. This should not happen synchronously or in lock-step, so the master must be capable of dealing with multiple parallel build jobs. We now have the infrastructure to support this. TODO: substitutes are currently broken.
2004-04-14	* Be stricter in verifying store paths.	Eelco Dolstra	3	-4/+9

2004-03-22	* Some more nesting.	Eelco Dolstra	1	-4/+13

2004-03-12	* Set the NIX_STORE and NIX_BUILD_TOP environment variables in	Eelco Dolstra	3	-3/+19
	builders to point to the store and the temporary build directory, respectively. Useful for purity checking. * Also set TEMPDIR, TMPDIR, TEMP, and TEMP to NIX_BUILD_TOP to make sure that tools in the builder store temporary files in the right location.
2004-02-16	* Allow linking against an external Berkeley DB / ATerm library.	Eelco Dolstra	1	-1/+1

2004-02-14	* The environment variable NIX_ROOT can now be set to execute Nix in a	Eelco Dolstra	1	-9/+29
	chroot() environment. * A operation `--validpath' to register path validity. Useful for bootstrapping in a pure Nix environment. * Safety checks: ensure that files involved in store operations are in the store.
2004-02-13	* Regression fix: realise substitutes and detect cycles.	Eelco Dolstra	1	-1/+8

2004-01-15	* Catch SIGINT to terminate cleanly when the user tries to interrupt	Eelco Dolstra	6	-4/+27
	Nix. This is to prevent Berkeley DB from becoming wedged. Unfortunately it is not possible to throw C++ exceptions from a signal handler. In fact, you can't do much of anything except change variables of type `volatile sig_atomic_t'. So we set an interrupt flag in the signal handler and check it at various strategic locations in the code (by calling checkInterrupt()). Since this is unlikely to cover all cases (e.g., (semi-)infinite loops), sometimes SIGTERM may now be required to kill Nix.
2004-01-13	* Option `-B' to always show the output of builders, regardless of	Eelco Dolstra	3	-1/+7
	verbosity level.
2004-01-13	* Periodically checkpoint the log.	Eelco Dolstra	1	-1/+3

2004-01-13	* Tricky: make sure that the accessor count is not reset to 0 if	Eelco Dolstra	1	-1/+5
	recovery fails.
2004-01-13	* Print error messages, not debug messages.	Eelco Dolstra	1	-5/+9

2004-01-12	* Changed the extension for store expressions from ".nix" to ".store"	Eelco Dolstra	1	-1/+1
	(following the Usenix paper).
2004-01-07	* Upgraded to Berkeley DB 4.2.52. The main advantage of 4.2 is that	Eelco Dolstra	1	-1/+1
	it automatically removes log files when they are no longer needed. * IMPORTANT * If you have an existing Nix installation, you must checkpoint the Nix database to prevent recent transactions from being undone. Do the following: - optional: make a backup of $prefix/var/nix/db. - run `db_checkpoint' from Berkeley DB 4.1: $ db_checkpoint -h $prefix/var/nix/db -1 - optional (?): run `db_recover' from Berkeley DB 4.1: $ db_recover -h $prefix/var/nix/db - remove $prefix/var/nix/db/log* and $prefix/var/nix/db/__db*
2004-01-05	* Implemented Eelco V.'s `nix-env -I' command to specify the default	Eelco Dolstra	1	-6/+2
	path of the Nix expression to be used with the import, upgrade, and query commands. For instance, $ nix-env -I ~/nixpkgs/pkgs/system/i686-linux.nix $ nix-env --query --available [aka -qa] sylpheed-0.9.7 bison-1.875 pango-1.2.5 subversion-0.35.1 ... $ nix-env -i sylpheed $ nix-env -u subversion There can be only one default at a time. * If the path to a Nix expression is a symlink, follow the symlink prior to resolving relative path references in the expression.
2003-12-22	* GCC 2.95 compatibility.	Eelco Dolstra	2	-0/+2

2003-12-21	* Bug fix: parallel builds of the same derivation failed due to lock file ↵	Eelco Dolstra	1	-3/+5
	removal.
2003-12-05	* Allow successors that don't exist but have a substitute.	Eelco Dolstra	1	-34/+73
	* Integrity: check in successor / substitute registration whether the target path exists or has a substitute.
2003-12-01	* Use a system name that does not include the OS manufacturer (i.e.,	Eelco Dolstra	1	-1/+1
	"i686-linux" instead of "i686-suse-linux").
2003-11-25	* More `make dist' fixes.	Eelco Dolstra	1	-4/+4

2003-11-25	* `make dist' fix.	Eelco Dolstra	1	-8/+1

2003-11-24	* Bug fix in path invalidation.	Eelco Dolstra	1	-23/+41
	* More consistency checks.