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* Merged the no-bdb branch (-r10900:HEAD

Browse source 
https://svn.nixos.org/repos/nix/nix/branches/no-bdb).
This commit is contained in:
Eelco Dolstra 2008-06-09 13:52:45 +00:00
parent 4ed01ed791
commit b0e92f6d47
24 changed files with 923 additions and 739 deletions
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76
src/libstore/build.cc
View file

@ -3,7 +3,6 @@
#include "misc.hh"
#include "globals.hh"
#include "local-store.hh"
#include "db.hh"
#include "util.hh"
#include <map>
@ -207,7 +206,9 @@ private:
public:
Worker();
LocalStore & store;
Worker(LocalStore & store);
~Worker();
/* Make a goal (with caching). */
@ -897,14 +898,14 @@ void DerivationGoal::haveDerivation()
return;
}
assert(store->isValidPath(drvPath));
assert(worker.store.isValidPath(drvPath));
/* Get the derivation. */
drv = derivationFromPath(drvPath);
for (DerivationOutputs::iterator i = drv.outputs.begin();
i != drv.outputs.end(); ++i)
store->addTempRoot(i->second.path);
worker.store.addTempRoot(i->second.path);
/* Check what outputs paths are not already valid. */
PathSet invalidOutputs = checkPathValidity(false);
@ -938,7 +939,7 @@ void DerivationGoal::haveDerivation()
i != invalidOutputs.end(); ++i)
/* Don't bother creating a substitution goal if there are no
substitutes. */
if (store->hasSubstitutes(*i))
if (worker.store.hasSubstitutes(*i))
addWaitee(worker.makeSubstitutionGoal(*i));
if (waitees.empty()) /* to prevent hang (no wake-up event) */
@ -993,7 +994,7 @@ void DerivationGoal::outputsSubstituted()
throw BuildError(format("`exportBuildReferencesGraph' contains a non-store path `%1%'")
% storePath);
storePath = toStorePath(storePath);
if (!store->isValidPath(storePath))
if (!worker.store.isValidPath(storePath))
throw BuildError(format("`exportBuildReferencesGraph' contains an invalid path `%1%'")
% storePath);
@ -1250,19 +1251,6 @@ PathSet outputPaths(const DerivationOutputs & outputs)
}
string showPaths(const PathSet & paths)
{
string s;
for (PathSet::const_iterator i = paths.begin();
i != paths.end(); ++i)
{
if (s.size() != 0) s += ", ";
s += "`" + *i + "'";
}
return s;
}
DerivationGoal::HookReply DerivationGoal::tryBuildHook()
{
if (!useBuildHook) return rpDecline;
@ -1474,7 +1462,7 @@ DerivationGoal::PrepareBuildReply DerivationGoal::prepareBuild()
i != drv.outputs.end(); ++i)
{
Path path = i->second.path;
if (store->isValidPath(path))
if (worker.store.isValidPath(path))
throw BuildError(format("obstructed build: path `%1%' exists") % path);
if (pathExists(path)) {
debug(format("removing unregistered path `%1%'") % path);
@ -1502,7 +1490,7 @@ DerivationGoal::PrepareBuildReply DerivationGoal::prepareBuild()
/* Add the relevant output closures of the input derivation
`*i' as input paths. Only add the closures of output paths
that are specified as inputs. */
assert(store->isValidPath(i->first));
assert(worker.store.isValidPath(i->first));
Derivation inDrv = derivationFromPath(i->first);
for (StringSet::iterator j = i->second.begin();
j != i->second.end(); ++j)
@ -1624,7 +1612,7 @@ void DerivationGoal::startBuilder()
throw BuildError(format("`exportReferencesGraph' contains a non-store path `%1%'")
% storePath);
storePath = toStorePath(storePath);
if (!store->isValidPath(storePath))
if (!worker.store.isValidPath(storePath))
throw BuildError(format("`exportReferencesGraph' contains an invalid path `%1%'")
% storePath);
@ -1652,7 +1640,7 @@ void DerivationGoal::startBuilder()
throw BuildError(format("`exportBuildReferencesGraph' contains a non-store path `%1%'")
% storePath);
storePath = toStorePath(storePath);
if (!store->isValidPath(storePath))
if (!worker.store.isValidPath(storePath))
throw BuildError(format("`exportBuildReferencesGraph' contains an invalid path `%1%'")
% storePath);
@ -1994,27 +1982,17 @@ void DerivationGoal::computeClosure()
}
/* Register each output path as valid, and register the sets of
paths referenced by each of them. This is wrapped in one
database transaction to ensure that if we crash, either
everything is registered or nothing is. This is for
recoverability: unregistered paths in the store can be deleted
arbitrarily, while registered paths can only be deleted by
running the garbage collector.
The reason that we do the transaction here and not on the fly
while we are scanning (above) is so that we don't hold database
locks for too long. */
Transaction txn;
createStoreTransaction(txn);
paths referenced by each of them. !!! this should be
atomic so that either all paths are registered as valid, or
none are. */
for (DerivationOutputs::iterator i = drv.outputs.begin();
i != drv.outputs.end(); ++i)
{
registerValidPath(txn, i->second.path,
worker.store.registerValidPath(i->second.path,
contentHashes[i->second.path],
allReferences[i->second.path],
drvPath);
}
txn.commit();
/* It is now safe to delete the lock files, since all future
lockers will see that the output paths are valid; they will not
@ -2113,7 +2091,7 @@ PathSet DerivationGoal::checkPathValidity(bool returnValid)
PathSet result;
for (DerivationOutputs::iterator i = drv.outputs.begin();
i != drv.outputs.end(); ++i)
if (store->isValidPath(i->second.path)) {
if (worker.store.isValidPath(i->second.path)) {
if (returnValid) result.insert(i->second.path);
} else {
if (!returnValid) result.insert(i->second.path);
@ -2219,10 +2197,10 @@ void SubstitutionGoal::init()
{
trace("init");
store->addTempRoot(storePath);
worker.store.addTempRoot(storePath);
/* If the path already exists we're done. */
if (store->isValidPath(storePath)) {
if (worker.store.isValidPath(storePath)) {
amDone(ecSuccess);
return;
}
@ -2293,7 +2271,7 @@ void SubstitutionGoal::referencesValid()
for (PathSet::iterator i = references.begin();
i != references.end(); ++i)
if (*i != storePath) /* ignore self-references */
assert(store->isValidPath(*i));
assert(worker.store.isValidPath(*i));
state = &SubstitutionGoal::tryToRun;
worker.waitForBuildSlot(shared_from_this());
@ -2327,7 +2305,7 @@ void SubstitutionGoal::tryToRun()
(format("waiting for lock on `%1%'") % storePath).str());
/* Check again whether the path is invalid. */
if (store->isValidPath(storePath)) {
if (worker.store.isValidPath(storePath)) {
debug(format("store path `%1%' has become valid") % storePath);
outputLock->setDeletion(true);
amDone(ecSuccess);
@ -2434,11 +2412,8 @@ void SubstitutionGoal::finished()
Hash contentHash = hashPath(htSHA256, storePath);
Transaction txn;
createStoreTransaction(txn);
registerValidPath(txn, storePath, contentHash,
worker.store.registerValidPath(storePath, contentHash,
references, deriver);
txn.commit();
outputLock->setDeletion(true);
@ -2472,7 +2447,8 @@ void SubstitutionGoal::handleEOF(int fd)
static bool working = false;
Worker::Worker()
Worker::Worker(LocalStore & store)
: store(store)
{
/* Debugging: prevent recursive workers. */
if (working) abort();
@ -2870,7 +2846,7 @@ void LocalStore::buildDerivations(const PathSet & drvPaths)
startNest(nest, lvlDebug,
format("building %1%") % showPaths(drvPaths));
Worker worker;
Worker worker(*this);
Goals goals;
for (PathSet::const_iterator i = drvPaths.begin();
@ -2895,9 +2871,9 @@ void LocalStore::buildDerivations(const PathSet & drvPaths)
void LocalStore::ensurePath(const Path & path)
{
/* If the path is already valid, we're done. */
if (store->isValidPath(path)) return;
if (isValidPath(path)) return;
Worker worker;
Worker worker(*this);
GoalPtr goal = worker.makeSubstitutionGoal(path);
Goals goals = singleton<Goals>(goal);