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2024-08-08libstore: make Worker::wakeUp privateeldritch horrors
Change-Id: Iffa55272fe6ef4adaf3e9d4d25e5339792c2e460
2024-08-08libstore: make Worker::waitForAWhile privateeldritch horrors
Change-Id: I0cdcd436ee71124ca992b4f4fe307624a25f11e9
2024-08-08libstore: make Worker::waitForBuildSlot privateeldritch horrors
Change-Id: I02a54846cd65622edbd7a1d6c24a623b4a59e5b3
2024-08-03libstore: move Goal::waiteeDone into Worker::goalFinishedeldritch horrors
this begins a long and arduous journey to remove all result state from Goal, to eventually drop the std::enable_shared_from_this base, and to completely eliminate all unsynchronized modification of states of both Goal and Worker. by the end of this we will hopefully be able to start and reap multiple derivation builds in parallel, which should speed up the process quite a bit (at least for short local builds, others might not notice a large difference. the build hooks will remain a problem.) Change-Id: I57dcd9b2cab4636ed4aa24cdec67124fef883345
2024-08-02libstore: move Goal::amDone to Workereldritch horrors
we still mutate goal state to store the results of any given goal run, but now we also have that information in Worker and could in theory do something else with it. we could return a map of goal to goal results, which would also let us better diagnose failures of subgoals (at all). Change-Id: I1df956bbd9fa8cc9485fb6df32918d68dda3ff48
2024-07-30libstore: always wake up goals on EOFeldritch horrors
all goals do this. it makes no sense to not notify a goal of EOF conditions because this is the universal signal for "child done" Change-Id: Ic3980de312547e616739c57c6248a8e81308b5ee
2024-07-29libstore: remove Worker::updateProgresseldritch horrors
just update progress every time a goal has returned from work(). there seem to be no performance penalties, and the code is much simpler now. Change-Id: I288ee568b764ee61f40a498d986afda49987cb50
2024-07-22libstore: remove an always-defaulted argumenteldritch horrors
Change-Id: I3c7f17d5492a16bb54480fa1aa384b96fba72d61
2024-07-22libstore: remove addToWeakGoalseldritch horrors
under owner_less it's equivalent to insert(), only sometimes a little bit faster because it does not construct a weak_ptr if the goal is in the set already. this small difference in performance does not matter here and c++23 will make insert transparent anyway, so we can drop it Change-Id: I7cbd7d6e0daa95d67145ec58183162f6c4743b15
2024-07-22libstore: remove Goal::ecBusyeldritch horrors
this should be an optional. "busy" is not an *exit* code! Change-Id: Ic231cb27b022312b1a7a7b9602f32845b7a9c934
2024-07-22libstore: remove unused Worker::waitForAnyGoaleldritch horrors
Change-Id: Ia3ebd434b17052b6760ce74d8e20025a72148613
2024-07-18Fixup a bunch of references to nixos.org manualsJade Lovelace
(plus one reference to CppNix github) Change-Id: Id8b3d2897f3b54e286861805cfd421adc4d5de47
2024-07-11libstore: remove upcast_goaleldritch horrors
upcast_goal was only ever needed to break circular includes, but the same solution that gave us upcast_goal also lets us fully remove it: just upcast goals without a wrapper function, but only in .cc files. Change-Id: I9c71654b2535121459ba7dcfd6c5da5606904032
2024-06-23libstore: Start creating LocalDerivationGoal subclassesArtemis Tosini
LocalDerivationGoal includes a large number of low-level sandboxing primitives for Darwin and Linux, intermingled with ifdefs. Start creating platform-specific classes to make it easier to add new platforms and review platform-specific code. This change only creates support infrastructure and moves two function, more functions will be moved in future changes. Change-Id: I9fc29fa2a7345107d4fc96c46fa90b4eabf6bb89
2024-05-26worker: process timeouts first, and exclusivelyeldritch horrors
check goals for timeouts first, and their activity fds only if no timeout has occurred. checking for timeouts *after* activity sets us up for assertion failures by running multiple build completion notifiers, the first of which will kill/reap the the goal process and consuming the Pid instance. when the second notifier attempts to do the same it will core dump with an assertion failure in Pid and take down not only the single goal, but the entire daemon and all goals it was building. luckily this is rare in practice since it requires a build to both finish and time out at the same time. writing a test for this is not feasible due to how much it relies on scheduling to actually trigger the underlying bug, but on idle machines it can usually be triggered by running multiple sleeping builds with timeout set to the sleep duration and `--keep-going`: nix-build --timeout 10 --builders '' --keep-going -E ' with import <nixpkgs> {}; builtins.genList (i: runCommand "foo-${toString i}" {} "sleep 10") 100 ' Change-Id: I394d36b2e5ffb909cf8a19977d569bbdb71cb67b
2024-03-11util.hh: split out signals stuffJade Lovelace
Copies part of the changes of ac89bb064aeea85a62b82a6daf0ecca7190a28b7 Change-Id: I9ce601875cd6d4db5eb1132d7835c5bab9f126d8
2024-03-04Merge pull request #9804 from edolstra/missing-nar-crasheldritch horrors
Fix crash when NAR is missing from binary cache (cherry picked from commit 3b20cca9625a1701a10a883735e7315185629563) Change-Id: I50ff18f4a6de69c323473b4a8e3e098d1f365145
2024-03-04Merge pull request #9763 from L-as/avoid-unnecessary-copyeldritch horrors
Avoid unnecessary copy of goal log (cherry picked from commit 268c49264ae2657c602f84f9bff3eb31306253ea) Change-Id: I5d9de9e43a7ddcb09d25bbc7367c9d83f58c7a75
2024-03-04Merge pull request #9400 from hercules-ci/refactors-from-5e3986f59cbeldritch horrors
Refactors from 5e3986f59cb (cherry picked from commit e540d48c4fb460e5e577d8b8b33e8eca9959c49b) Change-Id: I5b21b770a0c20ec2ec9845d3a97a524f1b0135ee
2023-10-02Revert "Adapt scheduler to work with dynamic derivations"John Ericson
This reverts commit 5e3986f59cb58f48186a49dcec7aa317b4787522. This un-implements RFC 92 but fixes the critical bug #9052 which many people are hitting. This is a decent stop-gap until a minimal reproduction of that bug is found and a proper fix can be made. Mostly fixed #9052, but I would like to leave that issue open until we have a regression test, so I can then properly fix the bug (unbreaking RFC 92) later. (cherry picked from commit 8440afbed756254784d9fea3eaab06649dffd390)
2023-09-07Allow dynamic derivation deps in `inputDrvs`John Ericson
We use the same nested map representation we used for goals, again in order to save space. We might someday want to combine with `inputDrvs`, by doing `V = bool` instead of `V = std::set<OutputName>`, but we are not doing that yet for sake of a smaller diff. The ATerm format for Derivations also needs to be extended, in addition to the in-memory format. To accomodate this, we added a new basic versioning scheme, so old versions of Nix will get nice errors. (And going forward, if the ATerm format changes again the errors will be even better.) `parsedStrings`, an internal function used as part of parsing derivations in A-Term format, used to consume the final `]` but expect the initial `[` to already be consumed. This made for what looked like unbalanced brackets at callsites, which was confusing. Now it consumes both which is hopefully less confusing. As part of testing, we also created a unit test for the A-Term format for regular non-experimental derivations too. Co-authored-by: Robert Hensing <roberth@users.noreply.github.com> Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io> Apply suggestions from code review Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2023-08-25Adapt scheduler to work with dynamic derivationsJohn Ericson
To avoid dealing with an optional `drvPath` (because we might not know it yet) everywhere, make an `CreateDerivationAndRealiseGoal`. This goal just builds/substitutes the derivation file, and then kicks of a build for that obtained derivation; in other words it does the chaining of goals when the drv file is missing (as can already be the case) or computed (new case). This also means the `getDerivation` state can be removed from `DerivationGoal`, which makes the `BasicDerivation` / in memory case and `Derivation` / drv file file case closer together. The map type is factored out for clarity, and because we will soon hvae a second use for it (`Derivation` itself). Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2023-08-18Fixing #7479John Ericson
Types converted: - `NixStringContextElem` - `OutputsSpec` - `ExtendedOutputsSpec` - `DerivationOutput` - `DerivationType` Existing ones mostly conforming the pattern cleaned up: - `ContentAddressMethod` - `ContentAddressWithReferences` The `DerivationGoal::derivationType` field had a bogus initialization, now caught, so I made it `std::optional`. I think #8829 can make it non-optional again because it will ensure we always have the derivation when we construct a `DerivationGoal`. See that issue (#7479) for details on the general goal. `git grep 'Raw::Raw'` indicates the two types I didn't yet convert `DerivedPath` and `BuiltPath` (and their `Single` variants) . This is because @roberth and I (can't find issue right now...) plan on reworking them somewhat, so I didn't want to churn them more just yet. Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
2023-08-10Make the Derived Path family of types inductive for dynamic derivationsJohn Ericson
We want to be able to write down `foo.drv^bar.drv^baz`: `foo.drv^bar.drv` is the dynamic derivation (since it is itself a derivation output, `bar.drv` from `foo.drv`). To that end, we create `Single{Derivation,BuiltPath}` types, that are very similar except instead of having multiple outputs (in a set or map), they have a single one. This is for everything to the left of the rightmost `^`. `NixStringContextElem` has an analogous change, and now can reuse `SingleDerivedPath` at the top level. In fact, if we ever get rid of `DrvDeep`, `NixStringContextElem` could be replaced with `SingleDerivedPath` entirely! Important note: some JSON formats have changed. We already can *produce* dynamic derivations, but we can't refer to them directly. Today, we can merely express building or example at the top imperatively over time by building `foo.drv^bar.drv`, and then with a second nix invocation doing `<result-from-first>^baz`, but this is not declarative. The ethos of Nix of being able to write down the full plan everything you want to do, and then execute than plan with a single command, and for that we need the new inductive form of these types. Co-authored-by: Robert Hensing <roberth@users.noreply.github.com> Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
2023-06-22Better document build failure exit codesJohn Ericson
- Improved API docs from comment - Exit codes are for `nix-build`, not just `nix-store --release` - Make note in tests so the magic numbers are not surprising Picking up where #8387 left off.
2023-05-08introduces `Goal::jobCategory`Matej Urbas
2023-05-07`max-substitution-jobs` settingMatej Urbas
2023-04-15Introduce `Worker::makeGoal`John Ericson
This takes a `DerivedPath` so the caller doesn't need to care about which sort of goal does what.
2023-02-01Merge pull request #7203 from graham33/feature/cpp20Eelco Dolstra
Proposal: Use C++20
2023-01-11Split `OutputsSpec` and `ExtendedOutputsSpec`, use the former moreJohn Ericson
`DerivedPath::Built` and `DerivationGoal` were previously using a regular set with the convention that the empty set means all outputs. But it is easy to forget about this rule when processing those sets. Using `OutputSpec` forces us to get it right.
2022-10-22Fix C++20 warningsGraham Bennett
2022-05-04Fix compiler warningEelco Dolstra
2022-05-04Get rid of most `.at` calls (#6393)Alain Zscheile
Use one of `get` or `getOr` instead which will either return a null-pointer (with a nicer error message) or a default value when the key is missing.
2022-02-25Remove std::string alias (for real this time)Eelco Dolstra
Also use std::string_view in a few more places.
2022-02-21Remove std::set aliasEelco Dolstra
2021-12-06Update manual linksJan Tojnar
Fixes: https://github.com/NixOS/nixos-homepage/issues/762
2021-10-07TypoEelco Dolstra
2021-07-22buildPaths(): Add an evalStore argumentEelco Dolstra
With this, we don't have to copy the entire .drv closure to the destination store ahead of time (or at all). Instead, buildPaths() reads .drv files from the eval store and copies inputSrcs to the destination store if it needs to build a derivation. Issue #5025.
2021-04-07PathSubstitutionGoal: Clean up pipeEelco Dolstra
If there were many top-level goals (which are not destroyed until the very end), commands like $ nix copy --to 'ssh://localhost?remote-store=/tmp/nix' \ /run/current-system --no-check-sigs --substitute-on-destination could fail with "Too many open files". So now we do some explicit cleanup from amDone(). It would be cleaner to separate goals from their temporary internal state, but that would be a bigger refactor.
2021-04-05Rename BuildableJohn Ericson
2021-04-05Use `BuildableReq` for `buildPaths` and `ensurePath`John Ericson
This avoids an ambiguity where the `StorePathWithOutputs { drvPath, {} }` could mean "build `brvPath`" or "substitute `drvPath`" depending on context. It also brings the internals closer in line to the new CLI, by generalizing the `Buildable` type is used there and makes that distinction already. In doing so, relegate `StorePathWithOutputs` to being a type just for backwards compatibility (CLI and RPC).
2021-03-01Allow substituting drv outputs when buildingregnat
2021-03-01SubstitutionGoal -> PathSubstitutionGoalregnat
To prepare for the upcoming DrvOutputSubstitutionGoal
2021-02-26Split {,local-}derivation-goal.{cc,hh}John Ericson
This separates the scheduling logic (including simple hook pathway) from the local-store needing code. This should be the final split for now. I'm reasonably happy with how it's turning out, even before I'm done moving code into `local-derivation-goal`. Benefits: 1. This will help "witness" that the hook case is indeed a lot simpler, and also compensate for the increased complexity that comes from content-addressed derivation outputs. 2. It also moves us ever so slightly towards a world where we could use off-the-shelf storage or sandboxing, since `local-derivation-goal` would be gutted in those cases, but `derivation-goal` should remain nearly the same. The new `#if 0` in the new files will be deleted in the following commit. I keep it here so if it turns out more stuff can be moved over, it's easy to do so in a way that preserves ordering --- and thus prevents conflicts. N.B. ```sh git diff HEAD^^ --color-moved --find-copies-harder --patience --stat ``` makes nicer output.
2021-01-25Merge pull request #4467 from edolstra/error-formattingEelco Dolstra
Improve error formatting
2021-01-21Improve error formattingEelco Dolstra
Changes: * The divider lines are gone. These were in practice a bit confusing, in particular with --show-trace or --keep-going, since then there were multiple lines, suggesting a start/end which wasn't the case. * Instead, multi-line error messages are now indented to align with the prefix (e.g. "error: "). * The 'description' field is gone since we weren't really using it. * 'hint' is renamed to 'msg' since it really wasn't a hint. * The error is now printed *before* the location info. * The 'name' field is no longer printed since most of the time it wasn't very useful since it was just the name of the exception (like EvalError). Ideally in the future this would be a unique, easily googleable error ID (like rustc). * "trace:" is now just "…". This assumes error contexts start with something like "while doing X". Example before: error: --- AssertionError ---------------------------------------------------------------------------------------- nix at: (7:7) in file: /home/eelco/Dev/nixpkgs/pkgs/applications/misc/hello/default.nix 6| 7| x = assert false; 1; | ^ 8| assertion 'false' failed ----------------------------------------------------- show-trace ----------------------------------------------------- trace: while evaluating the attribute 'x' of the derivation 'hello-2.10' at: (192:11) in file: /home/eelco/Dev/nixpkgs/pkgs/stdenv/generic/make-derivation.nix 191| // (lib.optionalAttrs (!(attrs ? name) && attrs ? pname && attrs ? version)) { 192| name = "${attrs.pname}-${attrs.version}"; | ^ 193| } // (lib.optionalAttrs (stdenv.hostPlatform != stdenv.buildPlatform && !dontAddHostSuffix && (attrs ? name || (attrs ? pname && attrs ? version)))) { Example after: error: assertion 'false' failed at: (7:7) in file: /home/eelco/Dev/nixpkgs/pkgs/applications/misc/hello/default.nix 6| 7| x = assert false; 1; | ^ 8| … while evaluating the attribute 'x' of the derivation 'hello-2.10' at: (192:11) in file: /home/eelco/Dev/nixpkgs/pkgs/stdenv/generic/make-derivation.nix 191| // (lib.optionalAttrs (!(attrs ? name) && attrs ? pname && attrs ? version)) { 192| name = "${attrs.pname}-${attrs.version}"; | ^ 193| } // (lib.optionalAttrs (stdenv.hostPlatform != stdenv.buildPlatform && !dontAddHostSuffix && (attrs ? name || (attrs ? pname && attrs ? version)))) {
2020-12-23Crudely make worker only provide a Store, not LocalStoreJohn Ericson
We downcast in a few places, this will be refactored to be better later.
2020-12-03Don't fail early when -j0 is passedregnat
If the build closure contains some CA derivations, then we can't know ahead-of-time that we won't build anything as early-cutoff might come-in at a laster stage
2020-12-01Move primeCache() to Worker::run()Eelco Dolstra
We need the missing path info to communicate the worker's remaining goals to the progress bar.
2020-10-17Just use `auto` in two places.John Ericson