forked from lix-project/lix
4bc4da331a
We can't open a SQLite database if the disk is full. Since this prevents the garbage collector from running when it's most needed, we reserve some dummy space that we can free just before doing a garbage collection. This actually revives some old code from the Berkeley DB days. Fixes #27.
105 lines
2.1 KiB
C++
105 lines
2.1 KiB
C++
#ifndef __REMOTE_STORE_H
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#define __REMOTE_STORE_H
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#include <string>
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#include "store-api.hh"
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namespace nix {
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class Pipe;
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class Pid;
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struct FdSink;
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struct FdSource;
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class RemoteStore : public StoreAPI
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{
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public:
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RemoteStore();
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~RemoteStore();
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/* Implementations of abstract store API methods. */
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bool isValidPath(const Path & path);
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PathSet queryValidPaths();
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ValidPathInfo queryPathInfo(const Path & path);
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Hash queryPathHash(const Path & path);
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void queryReferences(const Path & path, PathSet & references);
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void queryReferrers(const Path & path, PathSet & referrers);
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Path queryDeriver(const Path & path);
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PathSet queryDerivationOutputs(const Path & path);
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StringSet queryDerivationOutputNames(const Path & path);
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bool hasSubstitutes(const Path & path);
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bool querySubstitutablePathInfo(const Path & path,
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SubstitutablePathInfo & info);
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Path addToStore(const Path & srcPath,
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bool recursive = true, HashType hashAlgo = htSHA256,
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PathFilter & filter = defaultPathFilter);
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Path addTextToStore(const string & name, const string & s,
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const PathSet & references);
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void exportPath(const Path & path, bool sign,
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Sink & sink);
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Paths importPaths(bool requireSignature, Source & source);
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void buildDerivations(const PathSet & drvPaths);
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void ensurePath(const Path & path);
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void addTempRoot(const Path & path);
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void addIndirectRoot(const Path & path);
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void syncWithGC();
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Roots findRoots();
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void collectGarbage(const GCOptions & options, GCResults & results);
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PathSet queryFailedPaths();
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void clearFailedPaths(const PathSet & paths);
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private:
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AutoCloseFD fdSocket;
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FdSink to;
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FdSource from;
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Pid child;
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unsigned int daemonVersion;
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bool initialised;
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void openConnection(bool reserveSpace = true);
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void processStderr(Sink * sink = 0, Source * source = 0);
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void forkSlave();
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void connectToDaemon();
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void setOptions();
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};
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}
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#endif /* !__REMOTE_STORE_H */
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