forked from lix-project/hydra
Eelco Dolstra
parent
adf61e5cf8
commit
c642f787ee
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@ -1,35 +1,63 @@
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#include <map>
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#include <iostream>
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#define GC_LINUX_THREADS 1
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#include <gc/gc_allocator.h>
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#include "shared.hh"
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#include "store-api.hh"
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#include "eval.hh"
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#include "eval-inline.hh"
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#include "util.hh"
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#include "json.hh"
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#include "get-drvs.hh"
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#include "globals.hh"
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#include "common-eval-args.hh"
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#include "attr-path.hh"
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#include "derivations.hh"
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#include "hydra-config.hh"
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <sys/resource.h>
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#include <nlohmann/json.hpp>
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using namespace nix;
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static Path gcRootsDir;
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static size_t maxMemorySize;
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struct MyArgs : MixEvalArgs, MixCommonArgs
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{
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Path releaseExpr;
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bool dryRun = false;
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static void findJobs(EvalState & state, JSONObject & top,
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Bindings & autoArgs, Value & v, const string & attrPath);
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MyArgs() : MixCommonArgs("hydra-eval-jobs")
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{
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mkFlag()
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.longName("help")
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.description("show usage information")
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.handler([&]() {
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printHelp(programName, std::cout);
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throw Exit();
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});
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mkFlag()
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.longName("gc-roots-dir")
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.description("garbage collector roots directory")
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.labels({"path"})
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.dest(&gcRootsDir);
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static string queryMetaStrings(EvalState & state, DrvInfo & drv, const string & name, const string & subAttribute)
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mkFlag()
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.longName("dry-run")
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.description("don't create store derivations")
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.set(&dryRun, true);
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expectArg("expr", &releaseExpr);
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}
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};
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static MyArgs myArgs;
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static std::string queryMetaStrings(EvalState & state, DrvInfo & drv, const string & name, const string & subAttribute)
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{
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Strings res;
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std::function<void(Value & v)> rec;
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@ -54,92 +82,83 @@ static string queryMetaStrings(EvalState & state, DrvInfo & drv, const string &
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return concatStringsSep(", ", res);
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}
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static std::string lastAttrPath;
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static bool comma = false;
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static size_t maxHeapSize;
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struct BailOut { };
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bool lte(const std::string & s1, const std::string & s2)
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static void worker(
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EvalState & state,
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Bindings & autoArgs,
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AutoCloseFD & to,
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AutoCloseFD & from)
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{
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size_t p1 = 0, p2 = 0;
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Value vTop;
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state.evalFile(lookupFileArg(state, myArgs.releaseExpr), vTop);
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auto vRoot = state.allocValue();
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state.autoCallFunction(autoArgs, vTop, *vRoot);
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while (true) {
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if (p1 == s1.size()) return p2 == s2.size();
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if (p2 == s2.size()) return true;
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/* Wait for the master to send us a job name. */
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writeLine(to.get(), "next");
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auto d1 = s1.find('.', p1);
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auto d2 = s2.find('.', p2);
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auto s = readLine(from.get());
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if (s == "exit") break;
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if (!hasPrefix(s, "do ")) abort();
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std::string attrPath(s, 3);
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auto c = s1.compare(p1, d1 - p1, s2, p2, d2 - p2);
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debug("worker process %d at '%s'", getpid(), attrPath);
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if (c < 0) return true;
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if (c > 0) return false;
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/* Evaluate it and send info back to the master. */
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nlohmann::json reply;
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p1 = d1 == std::string::npos ? s1.size() : d1 + 1;
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p2 = d2 == std::string::npos ? s2.size() : d2 + 1;
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}
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}
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try {
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auto v = findAlongAttrPath(state, attrPath, autoArgs, *vRoot).first;
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state.forceValue(*v);
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static void findJobsWrapped(EvalState & state, JSONObject & top,
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Bindings & autoArgs, Value & vIn, const string & attrPath)
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{
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if (lastAttrPath != "" && lte(attrPath, lastAttrPath)) return;
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debug(format("at path `%1%'") % attrPath);
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checkInterrupt();
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Value v;
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state.autoCallFunction(autoArgs, vIn, v);
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if (v.type == tAttrs) {
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auto drv = getDerivation(state, v, false);
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if (drv) {
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Path drvPath;
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if (auto drv = getDerivation(state, *v, false)) {
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DrvInfo::Outputs outputs = drv->queryOutputs();
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if (drv->querySystem() == "unknown")
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throw EvalError("derivation must have a ‘system’ attribute");
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throw EvalError("derivation must have a 'system' attribute");
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if (comma) { std::cout << ","; comma = false; }
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auto drvPath = drv->queryDrvPath();
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{
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auto res = top.object(attrPath);
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res.attr("nixName", drv->queryName());
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res.attr("system", drv->querySystem());
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res.attr("drvPath", drvPath = drv->queryDrvPath());
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res.attr("description", drv->queryMetaString("description"));
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res.attr("license", queryMetaStrings(state, *drv, "license", "shortName"));
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res.attr("homepage", drv->queryMetaString("homepage"));
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res.attr("maintainers", queryMetaStrings(state, *drv, "maintainers", "email"));
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res.attr("schedulingPriority", drv->queryMetaInt("schedulingPriority", 100));
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res.attr("timeout", drv->queryMetaInt("timeout", 36000));
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res.attr("maxSilent", drv->queryMetaInt("maxSilent", 7200));
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res.attr("isChannel", drv->queryMetaBool("isHydraChannel", false));
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nlohmann::json job;
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job["nixName"] = drv->queryName();
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job["system"] =drv->querySystem();
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job["drvPath"] = drvPath;
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job["description"] = drv->queryMetaString("description");
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job["license"] = queryMetaStrings(state, *drv, "license", "shortName");
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job["homepage"] = drv->queryMetaString("homepage");
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job["maintainers"] = queryMetaStrings(state, *drv, "maintainers", "email");
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job["schedulingPriority"] = drv->queryMetaInt("schedulingPriority", 100);
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job["timeout"] = drv->queryMetaInt("timeout", 36000);
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job["maxSilent"] = drv->queryMetaInt("maxSilent", 7200);
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job["isChannel"] = drv->queryMetaBool("isHydraChannel", false);
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/* If this is an aggregate, then get its constituents. */
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Bindings::iterator a = v.attrs->find(state.symbols.create("_hydraAggregate"));
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if (a != v.attrs->end() && state.forceBool(*a->value, *a->pos)) {
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Bindings::iterator a = v.attrs->find(state.symbols.create("constituents"));
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if (a == v.attrs->end())
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auto a = v->attrs->get(state.symbols.create("_hydraAggregate"));
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if (a && state.forceBool(*a->value, *a->pos)) {
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auto a = v->attrs->get(state.symbols.create("constituents"));
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if (!a)
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throw EvalError("derivation must have a ‘constituents’ attribute");
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PathSet context;
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state.coerceToString(*a->pos, *a->value, context, true, false);
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PathSet drvs;
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for (auto & i : context)
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if (i.at(0) == '!') {
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size_t index = i.find("!", 1);
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drvs.insert(string(i, index + 1));
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job["constituents"].push_back(string(i, index + 1));
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}
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state.forceList(*a->value, *a->pos);
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for (unsigned int n = 0; n < a->value->listSize(); ++n) {
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auto v = a->value->listElems()[n];
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state.forceValue(*v);
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if (v->type == tString)
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job["namedConstituents"].push_back(state.forceStringNoCtx(*v));
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}
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res.attr("constituents", concatStringsSep(" ", drvs));
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}
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/* Register the derivation as a GC root. !!! This
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@ -152,72 +171,46 @@ static void findJobsWrapped(EvalState & state, JSONObject & top,
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localStore->addPermRoot(localStore->parseStorePath(drvPath), root, false);
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}
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auto res2 = res.object("outputs");
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nlohmann::json out;
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for (auto & j : outputs)
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res2.attr(j.first, j.second);
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out[j.first] = j.second;
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job["outputs"] = std::move(out);
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reply["job"] = std::move(job);
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}
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GC_prof_stats_s gc;
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GC_get_prof_stats(&gc, sizeof(gc));
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if (gc.heapsize_full > maxHeapSize) {
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printInfo("restarting hydra-eval-jobs after job '%s' because heap size is at %d bytes", attrPath, gc.heapsize_full);
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lastAttrPath = attrPath;
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throw BailOut();
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}
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}
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else {
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if (!state.isDerivation(v)) {
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for (auto & i : v.attrs->lexicographicOrder()) {
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else if (v->type == tAttrs) {
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auto attrs = nlohmann::json::array();
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StringSet ss;
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for (auto & i : v->attrs->lexicographicOrder()) {
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std::string name(i->name);
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/* Skip jobs with dots in the name. */
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if (name.find('.') != std::string::npos) {
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if (name.find('.') != std::string::npos || name.find(' ') != std::string::npos) {
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printError("skipping job with illegal name '%s'", name);
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continue;
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}
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findJobs(state, top, autoArgs, *i->value,
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(attrPath.empty() ? "" : attrPath + ".") + name);
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}
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}
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attrs.push_back(name);
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}
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reply["attrs"] = std::move(attrs);
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}
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else if (v.type == tNull) {
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// allow null values, meaning 'do nothing'
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}
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else
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throw TypeError(format("unsupported value: %1%") % v);
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}
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static void findJobs(EvalState & state, JSONObject & top,
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Bindings & autoArgs, Value & v, const string & attrPath)
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{
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try {
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findJobsWrapped(state, top, autoArgs, v, attrPath);
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} catch (EvalError & e) {
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if (comma) { std::cout << ","; comma = false; }
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auto res = top.object(attrPath);
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res.attr("error", filterANSIEscapes(e.msg(), true));
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}
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reply["error"] = filterANSIEscapes(e.msg(), true);
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}
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writeLine(to.get(), reply.dump());
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/* If our RSS exceeds the maximum, exit. The master will
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start a new process. */
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struct rusage r;
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getrusage(RUSAGE_SELF, &r);
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if ((size_t) r.ru_maxrss > maxMemorySize * 1024) break;
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}
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writeLine(to.get(), "restart");
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}
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int main(int argc, char * * argv)
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{
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assert(lte("abc", "def"));
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assert(lte("abc", "def.foo"));
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assert(!lte("def", "abc"));
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assert(lte("nixpkgs.hello", "nixpkgs"));
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assert(lte("nixpkgs.hello", "nixpkgs.hellooo"));
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assert(lte("gitAndTools.git-annex.x86_64-darwin", "gitAndTools.git-annex.x86_64-linux"));
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assert(lte("gitAndTools.git-annex.x86_64-linux", "gitAndTools.git-annex-remote-b2.aarch64-linux"));
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/* Prevent undeclared dependencies in the evaluation via
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$NIX_PATH. */
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unsetenv("NIX_PATH");
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@ -226,69 +219,14 @@ int main(int argc, char * * argv)
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auto config = std::make_unique<::Config>();
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auto initialHeapSize = config->getStrOption("evaluator_initial_heap_size", "");
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if (initialHeapSize != "")
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setenv("GC_INITIAL_HEAP_SIZE", initialHeapSize.c_str(), 1);
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maxHeapSize = config->getIntOption("evaluator_max_heap_size", 1UL << 30);
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auto nrWorkers = config->getIntOption("evaluator_workers", 1);
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maxMemorySize = config->getIntOption("evaluator_max_memory_size", 4096);
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initNix();
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initGC();
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/* Read the current heap size, which is the initial heap size. */
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GC_prof_stats_s gc;
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GC_get_prof_stats(&gc, sizeof(gc));
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auto initialHeapSizeInt = gc.heapsize_full;
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/* Then make sure the maximum heap size will be bigger than the initial heap size. */
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if (initialHeapSizeInt > maxHeapSize) {
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printInfo("warning: evaluator_initial_heap_size (%d) bigger than evaluator_max_heap_size (%d).", initialHeapSizeInt, maxHeapSize);
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maxHeapSize = initialHeapSizeInt * 1.1;
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printInfo(" evaluator_max_heap_size now set to %d.", maxHeapSize);
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}
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Path releaseExpr;
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struct MyArgs : LegacyArgs, MixEvalArgs
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{
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using LegacyArgs::LegacyArgs;
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};
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MyArgs myArgs(baseNameOf(argv[0]), [&](Strings::iterator & arg, const Strings::iterator & end) {
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if (*arg == "--gc-roots-dir")
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gcRootsDir = getArg(*arg, arg, end);
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else if (*arg == "--dry-run")
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settings.readOnlyMode = true;
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else if (*arg != "" && arg->at(0) == '-')
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return false;
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else
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releaseExpr = *arg;
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return true;
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});
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myArgs.parseCmdline(argvToStrings(argc, argv));
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JSONObject json(std::cout, true);
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std::cout.flush();
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do {
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Pipe pipe;
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pipe.create();
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ProcessOptions options;
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options.allowVfork = false;
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GC_atfork_prepare();
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auto pid = startProcess([&]() {
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pipe.readSide = -1;
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GC_atfork_child();
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GC_start_mark_threads();
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if (lastAttrPath != "") debug("resuming from '%s'", lastAttrPath);
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/* FIXME: The build hook in conjunction with import-from-derivation is causing "unexpected EOF" during eval */
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settings.builders = "";
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@ -296,46 +234,196 @@ int main(int argc, char * * argv)
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to the environment. */
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evalSettings.restrictEval = true;
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if (releaseExpr == "") throw UsageError("no expression specified");
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if (myArgs.dryRun) settings.readOnlyMode = true;
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if (myArgs.releaseExpr == "") throw UsageError("no expression specified");
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if (gcRootsDir == "") printMsg(lvlError, "warning: `--gc-roots-dir' not specified");
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EvalState state(myArgs.searchPath, openStore());
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struct State
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{
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std::set<std::string> todo{""};
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std::set<std::string> active;
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nlohmann::json jobs;
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std::exception_ptr exc;
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};
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Bindings & autoArgs = *myArgs.getAutoArgs(state);
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std::condition_variable wakeup;
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Value v;
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state.evalFile(lookupFileArg(state, releaseExpr), v);
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comma = lastAttrPath != "";
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Sync<State> state_;
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/* Start a handler thread per worker process. */
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auto handler = [&]()
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{
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try {
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findJobs(state, json, autoArgs, v, "");
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lastAttrPath = "";
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} catch (BailOut &) { }
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pid_t pid = -1;
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AutoCloseFD from, to;
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writeFull(pipe.writeSide.get(), lastAttrPath);
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while (true) {
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exit(0);
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}, options);
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/* Start a new worker process if necessary. */
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if (pid == -1) {
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Pipe toPipe, fromPipe;
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toPipe.create();
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fromPipe.create();
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pid = startProcess(
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[&,
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to{std::make_shared<AutoCloseFD>(std::move(fromPipe.writeSide))},
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from{std::make_shared<AutoCloseFD>(std::move(toPipe.readSide))}
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]()
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{
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try {
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EvalState state(myArgs.searchPath, openStore());
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Bindings & autoArgs = *myArgs.getAutoArgs(state);
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worker(state, autoArgs, *to, *from);
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} catch (std::exception & e) {
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nlohmann::json err;
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err["error"] = e.what();
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writeLine(to->get(), err.dump());
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}
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},
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ProcessOptions { .allowVfork = false });
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from = std::move(fromPipe.readSide);
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to = std::move(toPipe.writeSide);
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debug("created worker process %d", pid);
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}
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GC_atfork_parent();
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/* Check whether the existing worker process is still there. */
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auto s = readLine(from.get());
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if (s == "restart") {
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pid = -1;
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continue;
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} else if (s != "next") {
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auto json = nlohmann::json::parse(s);
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throw Error("worker error: %s", (std::string) json["error"]);
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}
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pipe.writeSide = -1;
|
||||
/* Wait for a job name to become available. */
|
||||
std::string attrPath;
|
||||
|
||||
int status;
|
||||
while (true) {
|
||||
checkInterrupt();
|
||||
if (waitpid(pid, &status, 0) == pid) break;
|
||||
if (errno != EINTR) continue;
|
||||
auto state(state_.lock());
|
||||
if ((state->todo.empty() && state->active.empty()) || state->exc) {
|
||||
writeLine(to.get(), "exit");
|
||||
return;
|
||||
}
|
||||
if (!state->todo.empty()) {
|
||||
attrPath = *state->todo.begin();
|
||||
state->todo.erase(state->todo.begin());
|
||||
state->active.insert(attrPath);
|
||||
break;
|
||||
} else
|
||||
state.wait(wakeup);
|
||||
}
|
||||
|
||||
if (status != 0)
|
||||
throw Exit(WIFEXITED(status) ? WEXITSTATUS(status) : 99);
|
||||
/* Tell the worker to evaluate it. */
|
||||
writeLine(to.get(), "do " + attrPath);
|
||||
|
||||
maxHeapSize += 64 * 1024 * 1024;
|
||||
/* Wait for the response. */
|
||||
auto response = nlohmann::json::parse(readLine(from.get()));
|
||||
|
||||
lastAttrPath = drainFD(pipe.readSide.get());
|
||||
} while (lastAttrPath != "");
|
||||
/* Handle the response. */
|
||||
StringSet newAttrs;
|
||||
|
||||
if (response.find("job") != response.end()) {
|
||||
auto state(state_.lock());
|
||||
state->jobs[attrPath] = response["job"];
|
||||
}
|
||||
|
||||
if (response.find("attrs") != response.end()) {
|
||||
for (auto & i : response["attrs"]) {
|
||||
auto s = (attrPath.empty() ? "" : attrPath + ".") + (std::string) i;
|
||||
newAttrs.insert(s);
|
||||
}
|
||||
}
|
||||
|
||||
if (response.find("error") != response.end()) {
|
||||
auto state(state_.lock());
|
||||
state->jobs[attrPath]["error"] = response["error"];
|
||||
}
|
||||
|
||||
/* Add newly discovered job names to the queue. */
|
||||
{
|
||||
auto state(state_.lock());
|
||||
state->active.erase(attrPath);
|
||||
for (auto & s : newAttrs)
|
||||
state->todo.insert(s);
|
||||
wakeup.notify_all();
|
||||
}
|
||||
}
|
||||
} catch (...) {
|
||||
auto state(state_.lock());
|
||||
state->exc = std::current_exception();
|
||||
wakeup.notify_all();
|
||||
}
|
||||
};
|
||||
|
||||
std::vector<std::thread> threads;
|
||||
for (size_t i = 0; i < nrWorkers; i++)
|
||||
threads.emplace_back(std::thread(handler));
|
||||
|
||||
for (auto & thread : threads)
|
||||
thread.join();
|
||||
|
||||
auto state(state_.lock());
|
||||
|
||||
if (state->exc)
|
||||
std::rethrow_exception(state->exc);
|
||||
|
||||
/* For aggregate jobs that have named consistuents
|
||||
(i.e. constituents that are a job name rather than a
|
||||
derivation), look up the referenced job and add it to the
|
||||
dependencies of the aggregate derivation. */
|
||||
auto store = openStore();
|
||||
|
||||
for (auto i = state->jobs.begin(); i != state->jobs.end(); ++i) {
|
||||
auto jobName = i.key();
|
||||
auto & job = i.value();
|
||||
|
||||
auto named = job.find("namedConstituents");
|
||||
if (named == job.end()) continue;
|
||||
|
||||
if (myArgs.dryRun) {
|
||||
for (std::string jobName2 : *named) {
|
||||
auto job2 = state->jobs.find(jobName2);
|
||||
if (job2 == state->jobs.end())
|
||||
throw Error("aggregate job '%s' references non-existent job '%s'", jobName, jobName2);
|
||||
std::string drvPath2 = (*job2)["drvPath"];
|
||||
job["constituents"].push_back(drvPath2);
|
||||
}
|
||||
} else {
|
||||
std::string drvPath = job["drvPath"];
|
||||
auto drv = readDerivation(*store, drvPath);
|
||||
|
||||
for (std::string jobName2 : *named) {
|
||||
auto job2 = state->jobs.find(jobName2);
|
||||
if (job2 == state->jobs.end())
|
||||
throw Error("aggregate job '%s' references non-existent job '%s'", jobName, jobName2);
|
||||
std::string drvPath2 = (*job2)["drvPath"];
|
||||
auto drv2 = readDerivation(*store, drvPath2);
|
||||
job["constituents"].push_back(drvPath2);
|
||||
drv.inputDrvs[store->parseStorePath(drvPath2)] = {drv2.outputs.begin()->first};
|
||||
}
|
||||
|
||||
std::string drvName(store->parseStorePath(drvPath).name());
|
||||
assert(hasSuffix(drvName, drvExtension));
|
||||
drvName.resize(drvName.size() - drvExtension.size());
|
||||
auto h = hashDerivationModulo(*store, drv, true);
|
||||
auto outPath = store->makeOutputPath("out", h, drvName);
|
||||
drv.env["out"] = store->printStorePath(outPath);
|
||||
drv.outputs.insert_or_assign("out", DerivationOutput(outPath.clone(), "", ""));
|
||||
auto newDrvPath = store->printStorePath(writeDerivation(store, drv, drvName));
|
||||
|
||||
debug("rewrote aggregate derivation %s -> %s", drvPath, newDrvPath);
|
||||
|
||||
job["drvPath"] = newDrvPath;
|
||||
job["outputs"]["out"] = store->printStorePath(outPath);
|
||||
}
|
||||
|
||||
job.erase("namedConstituents");
|
||||
}
|
||||
|
||||
std::cout << state->jobs.dump(2) << "\n";
|
||||
});
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue