depot - monorepo for the virus lounge

Age	Commit message (Collapse)	Author	Files	Lines
2004-11-29	* utime() follows symlinks, so don't change the mtime if the file is a	Eelco Dolstra	1	-7/+8
	symlink.
2004-11-29	* Remove debug statement.	Eelco Dolstra	1	-2/+0

2004-11-29	* Canonicalise metadata of all files in store paths (set the mtime to	Eelco Dolstra	1	-2/+58
	0, set the mode to either 444 or 555, set the group to the default).
2004-09-22	* Make store objects created by substitutes read-only.	Eelco Dolstra	1	-0/+2

2004-09-12	* Fallback didn't work for subderivations of an unnormalised the main	Eelco Dolstra	1	-44/+7
	derivation, since NormalisationGoal would first run a NormalisationGoal on the subderivation (a no-op, since in a situation where we need fallback the successor is known), and then runs a RealisationGoal on the normal form, which then cannot do a fallback because it doesn't know the derivation expression for which it is a normal form. Tossed out the 2-phase normalisation/realisation in NormalisationGoal and SubstitutionGoal since it's no longer needed - a RealisationGoal will run a NormalisationGoal if necessary.
2004-08-30	* Removed nrWaitees field. It was redundant with waitees.size() and	Eelco Dolstra	1	-24/+5
	could get out of sync if multiple input derivations mapped to the same closure expression (since waitees is a set).
2004-08-11	* The predecessor of a successor need not be present. This in	Eelco Dolstra	1	-4/+6
	particular happens on distributed builds or when using push/pull.
2004-08-05	* Clean up the temporary directory for hook communication (and don't	Eelco Dolstra	1	-0/+1
	print out incorrect "build failed" messages).
2004-08-04	* Creating a file nix-support/no-scan in the output path of a	Eelco Dolstra	1	-2/+5
	derivation disables scanning for dependencies. Use at your own risk. This is a quick hack to speed up UML image generation (image are very big, say 1 GB). It would be better if the scanner were faster, and didn't read the whole file into memory.
2004-07-06	* Fixed format string error.	Eelco Dolstra	1	-1/+1

2004-07-01	* Don't go into a (sometimes infinite) loop calling the build hook.	Eelco Dolstra	1	-16/+24

2004-07-01	* Include some missing headers.	Eelco Dolstra	1	-0/+1

2004-06-29	* Write build logs to disk again.	Eelco Dolstra	1	-1/+29

2004-06-28	* In a realisation goal, check the result of the corresponding	Eelco Dolstra	1	-0/+6
	normalisation goal.
2004-06-28	* Added a switch `--fallback'. From the manual:	Eelco Dolstra	1	-34/+101
	Whenever Nix attempts to realise a derivation for which a closure is already known, but this closure cannot be realised, fall back on normalising the derivation. The most common scenario in which this is useful is when we have registered substitutes in order to perform binary distribution from, say, a network repository. If the repository is down, the realisation of the derivation will fail. When this option is specified, Nix will build the derivation instead. Thus, binary installation falls back on a source installation. This option is not the default since it is generally not desirable for a transient failure in obtaining the substitutes to lead to a full build from source (with the related consumption of resources).
2004-06-25	* A flag `--keep-going / -k' to keep building goals if one fails, as	Eelco Dolstra	1	-130/+151
	much as possible. (This is similar to GNU Make's `-k' flag.) * Refactoring to implement this: previously we just bombed out when a build failed, but now we have to clean up. In particular this means that goals must be freed quickly --- they shouldn't hang around until the worker exits. So the worker now maintains weak pointers in order not to prevent garbage collection. * Documented the `-k' and `-j' flags.
2004-06-25	* Don't throw an exception when a build fails. Just terminate the	Eelco Dolstra	1	-58/+214
	goal and allow the problem to be handled elsewhere (e.g., at top-level).
2004-06-24	* Multiple and/or failing substitutes now work.	Eelco Dolstra	1	-12/+42

2004-06-22	* Arghhhhhh	Eelco Dolstra	1	-1/+1

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	1	-2/+2

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

2004-06-22	* Wrapper class around pids.	Eelco Dolstra	1	-74/+26

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

2004-06-22	* Refactoring.	Eelco Dolstra	1	-19/+5

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.
2004-06-20	* Re-enable support for substitutes in the normaliser.	Eelco Dolstra	1	-23/+218
	* 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.
2004-06-19	* 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	1	-763/+796
	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	1	-5/+8
	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	1	-116/+630
	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	1	-0/+1

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	1	-0/+6
	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.
2004-02-13	* 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	1	-0/+6
	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.
2003-11-22	* Maintain integrity of the substitute and successor mappings when	Eelco Dolstra	1	-0/+1
	deleting a path in the store. * Allow absolute paths in Nix expressions. * Get nix-prefetch-url to work again. * Various other fixes.