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* Increase Berkeley DB limits a bit more.

Browse source 
* Maintain the cleanup invariant in clearSubstitutes().
This commit is contained in:
Eelco Dolstra 2005-03-03 13:10:44 +00:00
parent 0107fba48e
commit 86cb3cc554
2 changed files with 26 additions and 7 deletions
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6
src/libstore/db.cc
View file

@ -194,9 +194,9 @@ void Database::open(const string & path)
number, then run db_recover on the database to remove the
existing DB environment (since changes only take effect on
new environments). */
env->set_lk_max_locks(4000);
env->set_lk_max_lockers(4000);
env->set_lk_max_objects(4000);
env->set_lk_max_locks(10000);
env->set_lk_max_lockers(10000);
env->set_lk_max_objects(10000);
env->set_lk_detect(DB_LOCK_DEFAULT);
/* Dangerous, probably, but from the docs it *seems* that BDB

27
src/libstore/store.cc
View file

@ -320,6 +320,9 @@ void setReferences(const Transaction & txn, const Path & storePath,
Paths oldReferences;
nixDB.queryStrings(txn, dbReferences, storePath, oldReferences);
PathSet oldReferences2(oldReferences.begin(), oldReferences.end());
if (oldReferences2 == references) return;
nixDB.setStrings(txn, dbReferences, storePath,
Paths(references.begin(), references.end()));
@ -454,6 +457,9 @@ void registerSubstitute(const Transaction & txn,
Substitutes subs = readSubstitutes(txn, srcPath);
if (find(subs.begin(), subs.end(), sub) != subs.end())
return;
/* New substitutes take precedence over old ones. If the
substitute is already present, it's moved to the front. */
remove(subs.begin(), subs.end(), sub);
@ -469,6 +475,9 @@ Substitutes querySubstitutes(const Transaction & txn, const Path & srcPath)
}
static void invalidatePath(Transaction & txn, const Path & path);
void clearSubstitutes()
{
Transaction txn(nixDB);
@ -477,10 +486,20 @@ void clearSubstitutes()
Paths subKeys;
nixDB.enumTable(txn, dbSubstitutes, subKeys);
for (Paths::iterator i = subKeys.begin(); i != subKeys.end(); ++i) {
/* Delete all substitutes for path *i. */
nixDB.delPair(txn, dbSubstitutes, *i);
/* Maintain the cleanup invariant. */
if (!isValidPathTxn(txn, *i))
invalidatePath(txn, *i);
}
/* !!! there should be no referers to any of the invalid
substitutable paths. This should be the case by construction
(the only referers can be other invalid substitutable paths,
which have all been removed now). */
txn.commit();
}
@ -541,7 +560,7 @@ void registerValidPath(const Transaction & txn,
/* Invalidate a path. The caller is responsible for checking that
there are no referers. */
static void invalidatePath(const Path & path, Transaction & txn)
static void invalidatePath(Transaction & txn, const Path & path)
{
debug(format("unregistering path `%1%'") % path);
@ -673,7 +692,7 @@ void deleteFromStore(const Path & _path)
(referers.size() == 1 &&
*referers.begin() != path))
throw Error(format("cannot delete path `%1%' because it is in use") % path);
invalidatePath(path, txn);
invalidatePath(txn, path);
}
txn.commit();
@ -692,10 +711,10 @@ void verifyStore(bool checkContents)
for (Paths::iterator i = paths.begin(); i != paths.end(); ++i) {
if (!pathExists(*i)) {
printMsg(lvlError, format("path `%1%' disappeared") % *i);
invalidatePath(*i, txn);
invalidatePath(txn, *i);
} else if (!isStorePath(*i)) {
printMsg(lvlError, format("path `%1%' is not in the Nix store") % *i);
invalidatePath(*i, txn);
invalidatePath(txn, *i);
} else {
if (checkContents) {
Hash expected = queryHash(txn, *i);