From c10c61449f954702ae6d8092120321744acd82ff Mon Sep 17 00:00:00 2001 From: Eelco Dolstra Date: Thu, 4 Feb 2016 14:28:26 +0100 Subject: Eliminate the "store" global variable Also, move a few free-standing functions into StoreAPI and Derivation. Also, introduce a non-nullable smart pointer, ref, which is just a wrapper around std::shared_ptr ensuring that the pointer is never null. (For reference-counted values, this is better than passing a "T&", because the latter doesn't maintain the refcount. Usually, the caller will have a shared_ptr keeping the value alive, but that's not always the case, e.g., when passing a reference to a std::thread via std::bind.) --- src/libexpr/primops.cc | 57 +++++++++++++++++++++++++------------------------- 1 file changed, 28 insertions(+), 29 deletions(-) (limited to 'src/libexpr/primops.cc') diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc index 87ee4f68a999..2371ae1748a6 100644 --- a/src/libexpr/primops.cc +++ b/src/libexpr/primops.cc @@ -1,15 +1,15 @@ +#include "archive.hh" +#include "derivations.hh" +#include "download.hh" +#include "eval-inline.hh" #include "eval.hh" -#include "misc.hh" #include "globals.hh" +#include "json-to-value.hh" +#include "names.hh" #include "store-api.hh" #include "util.hh" -#include "archive.hh" -#include "value-to-xml.hh" #include "value-to-json.hh" -#include "json-to-value.hh" -#include "names.hh" -#include "eval-inline.hh" -#include "download.hh" +#include "value-to-xml.hh" #include #include @@ -43,7 +43,7 @@ std::pair decodeContext(const string & s) InvalidPathError::InvalidPathError(const Path & path) : EvalError(format("path ‘%1%’ is not valid") % path), path(path) {} -void realiseContext(const PathSet & context) +void EvalState::realiseContext(const PathSet & context) { PathSet drvs; for (auto & i : context) { @@ -52,16 +52,14 @@ void realiseContext(const PathSet & context) assert(isStorePath(ctx)); if (!store->isValidPath(ctx)) throw InvalidPathError(ctx); - if (!decoded.second.empty() && isDerivation(ctx)) + if (!decoded.second.empty() && nix::isDerivation(ctx)) drvs.insert(decoded.first + "!" + decoded.second); } if (!drvs.empty()) { /* For performance, prefetch all substitute info. */ PathSet willBuild, willSubstitute, unknown; unsigned long long downloadSize, narSize; - queryMissing(*store, drvs, - willBuild, willSubstitute, unknown, downloadSize, narSize); - + store->queryMissing(drvs, willBuild, willSubstitute, unknown, downloadSize, narSize); store->buildPaths(drvs); } } @@ -75,7 +73,7 @@ static void prim_scopedImport(EvalState & state, const Pos & pos, Value * * args Path path = state.coerceToPath(pos, *args[1], context); try { - realiseContext(context); + state.realiseContext(context); } catch (InvalidPathError & e) { throw EvalError(format("cannot import ‘%1%’, since path ‘%2%’ is not valid, at %3%") % path % e.path % pos); @@ -83,7 +81,7 @@ static void prim_scopedImport(EvalState & state, const Pos & pos, Value * * args path = state.checkSourcePath(path); - if (isStorePath(path) && store->isValidPath(path) && isDerivation(path)) { + if (isStorePath(path) && state.store->isValidPath(path) && isDerivation(path)) { Derivation drv = readDerivation(path); Value & w = *state.allocValue(); state.mkAttrs(w, 3 + drv.outputs.size()); @@ -145,7 +143,7 @@ static void prim_importNative(EvalState & state, const Pos & pos, Value * * args Path path = state.coerceToPath(pos, *args[0], context); try { - realiseContext(context); + state.realiseContext(context); } catch (InvalidPathError & e) { throw EvalError(format("cannot import ‘%1%’, since path ‘%2%’ is not valid, at %3%") % path % e.path % pos); @@ -560,11 +558,12 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * * runs. */ if (path.at(0) == '=') { /* !!! This doesn't work if readOnlyMode is set. */ - PathSet refs; computeFSClosure(*store, string(path, 1), refs); + PathSet refs; + state.store->computeFSClosure(string(path, 1), refs); for (auto & j : refs) { drv.inputSrcs.insert(j); if (isDerivation(j)) - drv.inputDrvs[j] = store->queryDerivationOutputNames(j); + drv.inputDrvs[j] = state.store->queryDerivationOutputNames(j); } } @@ -581,7 +580,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * * /* Handle derivation contexts returned by ‘builtins.storePath’. */ else if (isDerivation(path)) - drv.inputDrvs[path] = store->queryDerivationOutputNames(path); + drv.inputDrvs[path] = state.store->queryDerivationOutputNames(path); /* Otherwise it's a source file. */ else @@ -630,7 +629,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * * /* Use the masked derivation expression to compute the output path. */ - Hash h = hashDerivationModulo(*store, drv); + Hash h = hashDerivationModulo(*state.store, drv); for (auto & i : drv.outputs) if (i.second.path == "") { @@ -641,7 +640,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * * } /* Write the resulting term into the Nix store directory. */ - Path drvPath = writeDerivation(*store, drv, drvName, state.repair); + Path drvPath = writeDerivation(state.store, drv, drvName, state.repair); printMsg(lvlChatty, format("instantiated ‘%1%’ -> ‘%2%’") % drvName % drvPath); @@ -649,7 +648,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * * /* Optimisation, but required in read-only mode! because in that case we don't actually write store derivations, so we can't read them later. */ - drvHashes[drvPath] = hashDerivationModulo(*store, drv); + drvHashes[drvPath] = hashDerivationModulo(*state.store, drv); state.mkAttrs(v, 1 + drv.outputs.size()); mkString(*state.allocAttr(v, state.sDrvPath), drvPath, singleton("=" + drvPath)); @@ -695,7 +694,7 @@ static void prim_storePath(EvalState & state, const Pos & pos, Value * * args, V throw EvalError(format("path ‘%1%’ is not in the Nix store, at %2%") % path % pos); Path path2 = toStorePath(path); if (!settings.readOnlyMode) - store->ensurePath(path2); + state.store->ensurePath(path2); context.insert(path2); mkString(v, path, context); } @@ -745,7 +744,7 @@ static void prim_readFile(EvalState & state, const Pos & pos, Value * * args, Va PathSet context; Path path = state.coerceToPath(pos, *args[0], context); try { - realiseContext(context); + state.realiseContext(context); } catch (InvalidPathError & e) { throw EvalError(format("cannot read ‘%1%’, since path ‘%2%’ is not valid, at %3%") % path % e.path % pos); @@ -786,7 +785,7 @@ static void prim_findFile(EvalState & state, const Pos & pos, Value * * args, Va string path = state.forceStringNoCtx(*args[1], pos); try { - realiseContext(context); + state.realiseContext(context); } catch (InvalidPathError & e) { throw EvalError(format("cannot find ‘%1%’, since path ‘%2%’ is not valid, at %3%") % path % e.path % pos); @@ -801,7 +800,7 @@ static void prim_readDir(EvalState & state, const Pos & pos, Value * * args, Val PathSet ctx; Path path = state.coerceToPath(pos, *args[0], ctx); try { - realiseContext(ctx); + state.realiseContext(ctx); } catch (InvalidPathError & e) { throw EvalError(format("cannot read ‘%1%’, since path ‘%2%’ is not valid, at %3%") % path % e.path % pos); @@ -879,13 +878,13 @@ static void prim_toFile(EvalState & state, const Pos & pos, Value * * args, Valu if (path.at(0) != '~') throw EvalError(format("in ‘toFile’: the file ‘%1%’ cannot refer to derivation outputs, at %2%") % name % pos); path = string(path, 1); - } + } refs.insert(path); } Path storePath = settings.readOnlyMode ? computeStorePathForText(name, contents, refs) - : store->addTextToStore(name, contents, refs, state.repair); + : state.store->addTextToStore(name, contents, refs, state.repair); /* Note: we don't need to add `context' to the context of the result, since `storePath' itself has references to the paths @@ -951,7 +950,7 @@ static void prim_filterSource(EvalState & state, const Pos & pos, Value * * args Path dstPath = settings.readOnlyMode ? computeStorePathForPath(path, true, htSHA256, filter).first - : store->addToStore(baseNameOf(path), path, true, htSHA256, filter, state.repair); + : state.store->addToStore(baseNameOf(path), path, true, htSHA256, filter, state.repair); mkString(v, dstPath, singleton(dstPath)); } @@ -1678,7 +1677,7 @@ void fetch(EvalState & state, const Pos & pos, Value * * args, Value & v, } else url = state.forceStringNoCtx(*args[0], pos); - Path res = downloadFileCached(url, unpack); + Path res = downloadFileCached(state.store, url, unpack); mkString(v, res, PathSet({res})); } -- cgit 1.4.1