diff options
Diffstat (limited to 'vendor/github.com/syndtr/goleveldb/leveldb/version.go')
| -rw-r--r-- | vendor/github.com/syndtr/goleveldb/leveldb/version.go | 40 |
1 files changed, 22 insertions, 18 deletions
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/version.go b/vendor/github.com/syndtr/goleveldb/leveldb/version.go index c60f12c20..73f272af5 100644 --- a/vendor/github.com/syndtr/goleveldb/leveldb/version.go +++ b/vendor/github.com/syndtr/goleveldb/leveldb/version.go @@ -34,44 +34,48 @@ type version struct { cSeek unsafe.Pointer - closing bool - ref int - // Succeeding version. - next *version + closing bool + ref int + released bool } func newVersion(s *session) *version { return &version{s: s} } +func (v *version) incref() { + if v.released { + panic("already released") + } + + v.ref++ + if v.ref == 1 { + // Incr file ref. + for _, tt := range v.levels { + for _, t := range tt { + v.s.addFileRef(t.fd, 1) + } + } + } +} + func (v *version) releaseNB() { v.ref-- if v.ref > 0 { return - } - if v.ref < 0 { + } else if v.ref < 0 { panic("negative version ref") } - nextTables := make(map[int64]bool) - for _, tt := range v.next.levels { - for _, t := range tt { - num := t.fd.Num - nextTables[num] = true - } - } - for _, tt := range v.levels { for _, t := range tt { - num := t.fd.Num - if _, ok := nextTables[num]; !ok { + if v.s.addFileRef(t.fd, -1) == 0 { v.s.tops.remove(t) } } } - v.next.releaseNB() - v.next = nil + v.released = true } func (v *version) release() { |