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* Upgraded to Berkeley DB 4.1.25 and do not synchronously flush the

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log on commit.  This means that there is a small change that some
  transactions may be rolled back in case of a system crash, but this
  should not be a problem (it merely might cause some expression
  realisations to be rolled back), and it vastly improves performance.

* Upgraded to ATerm 2.0.5 (which also includes Armijn's 64-bit
  patches).
This commit is contained in:
Eelco Dolstra 2003-10-16 08:52:44 +00:00
parent 181aa3dc41
commit f7c7aad135
2 changed files with 11 additions and 10 deletions
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9
src/db.cc
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@ -160,6 +160,7 @@ void Database::open(const string & path)
env->set_lg_bsize(32 * 1024); /* default */
env->set_lg_max(256 * 1024); /* must be > 4 * lg_bsize */
env->set_lk_detect(DB_LOCK_DEFAULT);
env->set_flags(DB_TXN_WRITE_NOSYNC, 1);
/* The following code provides automatic recovery of the
@ -252,11 +253,11 @@ void Database::close()
{
debug(format("closing table %1%") % i->first);
Db * db = i->second;
db->close(0);
db->close(DB_NOSYNC);
delete db;
}
env->txn_checkpoint(0, 0, 0);
// env->txn_checkpoint(0, 0, 0);
env->close(0);
} catch (DbException e) { rethrow(e); }
@ -285,8 +286,8 @@ TableId Database::openTable(const string & tableName)
Db * db = new Db(env, 0);
try {
// !!! fixme when switching to BDB 4.1: use txn.
db->open(tableName.c_str(), 0, DB_HASH, DB_CREATE, 0666);
db->open(0, tableName.c_str(), 0,
DB_HASH, DB_CREATE | DB_AUTO_COMMIT, 0666);
} catch (...) {
delete db;
throw;