diff options
Diffstat (limited to 'db.go')
| -rw-r--r-- | db.go | 17 |
1 files changed, 16 insertions, 1 deletions
@@ -350,7 +350,6 @@ func (db *DB) beginTx() (*Tx, error) { // Lock the meta pages while we initialize the transaction. db.metalock.Lock() - defer db.metalock.Unlock() // Exit if the database is not open yet. if !db.opened { @@ -364,6 +363,16 @@ func (db *DB) beginTx() (*Tx, error) { // Keep track of transaction until it closes. db.txs = append(db.txs, t) + n := len(db.txs) + + // Unlock the meta pages. + db.metalock.Unlock() + + // Update the transaction stats. + db.statlock.Lock() + db.stats.TxN++ + db.stats.OpenTxN = n + db.statlock.Unlock() return t, nil } @@ -417,12 +426,14 @@ func (db *DB) removeTx(tx *Tx) { break } } + n := len(db.txs) // Unlock the meta pages. db.metalock.Unlock() // Merge statistics. db.statlock.Lock() + db.stats.OpenTxN = n db.stats.TxStats.add(&tx.stats) db.statlock.Unlock() } @@ -552,6 +563,10 @@ func (db *DB) allocate(count int) (*page, error) { // Stats represents statistics about the database. type Stats struct { + // Transaction stats + TxN int // total number of completed read transactions + OpenTxN int // number of currently open read transactions + TxStats TxStats // global, ongoing stats. } |