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mtsatellite
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Backed out changeset 2f388b07f19a (no measurable effect)

This commit is contained in:
Sascha L. Teichmann 2017-04-15 13:17:31 +02:00
parent 65119c1ee4
commit c067fc0618
1 changed files with 0 additions and 33 deletions
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33
cmd/mtredisalize/leveldb.go
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@ -6,7 +6,6 @@ package main
import (
"log"
"sync"
"bitbucket.org/s_l_teichmann/mtsatellite/common"
@ -22,9 +21,6 @@ type LevelDBBackend struct {
decoder common.KeyTranscoder
changeTracker *changeTracker
priorityCond *sync.Cond
priority int
}
type LevelDBSession struct {
@ -75,7 +71,6 @@ func NewLeveDBBackend(
encoder: encoder,
decoder: decoder,
changeTracker: changeTracker,
priorityCond: sync.NewCond(new(sync.Mutex)),
}
if !interleaved {
@ -88,28 +83,6 @@ func NewLeveDBBackend(
return
}
func (ldb *LevelDBBackend) suspend() {
ldb.priorityCond.L.Lock()
for ldb.priority > 0 {
ldb.priorityCond.Wait()
}
ldb.priorityCond.L.Unlock()
}
func (ldb *LevelDBBackend) grab() {
ldb.priorityCond.L.Lock()
ldb.priority++
ldb.priorityCond.L.Unlock()
}
func (ldb *LevelDBBackend) ungrab() {
ldb.priorityCond.L.Lock()
if ldb.priority--; ldb.priority <= 0 {
ldb.priorityCond.Broadcast()
}
ldb.priorityCond.L.Unlock()
}
func (ldb *LevelDBBackend) buildCoverage() error {
log.Println("INFO: Start building coverage index (this may take some time)...")
@ -180,8 +153,6 @@ func (ldbs *LevelDBSession) Fetch(hash, key []byte) (value []byte, err error) {
if key, err = ldbs.backend.decoder(key); err != nil {
return
}
ldbs.backend.grab()
defer ldbs.backend.ungrab()
ro := leveldb.NewReadOptions()
value, err = ldbs.backend.db.Get(ro, key)
//if err != nil {
@ -213,8 +184,6 @@ func (ldbs *LevelDBSession) Store(hash, key, value []byte) (exists bool, err err
if key, err = ldbs.backend.decoder(key); err != nil {
return
}
ldbs.backend.grab()
defer ldbs.backend.ungrab()
if exists, err = keyExists(ldbs.backend.db, key); err != nil {
return
}
@ -356,7 +325,6 @@ func (ldbs *LevelDBSession) plainSpatialQuery(
for _, r := range ldbs.backend.coverage.Query(c1, c2) {
a.Z, b.Z = int16(r.Z), int16(r.Z)
a.X, b.X = int16(r.X1), int16(r.X2)
ldbs.backend.suspend()
for a.Y = r.Y2; a.Y >= r.Y1; a.Y-- {
b.Y = a.Y
// The keys in the database are stored and ordered as strings
@ -447,7 +415,6 @@ func (ldbs *LevelDBSession) interleavedSpatialQuery(
it.Next()
} else {
next := common.BigMin(zmin, zmax, zcode)
ldbs.backend.suspend()
//log.Printf("seeking to: %d\n", next)
it.Seek(common.ToBigEndian(next))
//log.Printf("seeking done: %d\n", next)