func (s *Store) getOrCreateTypedKey(k Key, v Value, kt KeyType) *BRecord {
br, err := s.getKey(k, nil)
if err == ENOKEY {
if *GStore {
thing, ok := s.gstore.Get(gotomic.Key(k))
if !ok {
br = MakeBR(k, v, kt)
did := s.gstore.PutIfMissing(gotomic.Key(k), unsafe.Pointer(br))
if !did {
thing, ok = s.gstore.Get(gotomic.Key(k))
if !ok {
log.Fatalf("Cannot put new key, but Get() says it isn't there %v\n", k)
}
}
}
br = (*BRecord)(thing)
} else {
if !*UseRLocks {
log.Fatalf("Should have preallocated keys if not locking chunks\n")
}
// Create key
chunk := s.store[k[0]]
var ok bool
chunk.Lock()
br, ok = chunk.rows[k]
if !ok {
br = MakeBR(k, v, kt)
chunk.rows[k] = br
}
chunk.Unlock()
}
}
return br
}
func (s *Store) getKey(k Key, ld *gotomic.LocalData) (*BRecord, error) {
if len(k) == 0 {
debug.PrintStack()
log.Fatalf("[store] getKey(): Empty key\n")
}
if *GStore {
var x unsafe.Pointer
var ok bool
hc, present := s.hash_codes[k]
if ld == nil {
x, ok = s.gstore.Get(gotomic.Key(k))
} else if !present {
x, ok = s.gstore.GetHC(gotomic.Key(k).HashCode(), gotomic.Key(k), ld)
} else {
x, ok = s.gstore.GetHC(hc, gotomic.Key(k), ld)
}
if !ok {
dlog.Printf("Not in hash map. %v %v %v\n", k, x, ok)
return nil, ENOKEY
} else {
if x == nil {
fmt.Printf("Nil brecord! %v\n", k)
}
return (*BRecord)(x), nil
}
}
if !*UseRLocks {
x, err := s.getKeyStatic(k)
return x, err
}
chunk := s.store[k[0]]
if chunk == nil {
log.Fatalf("[store] Didn't initialize chunk for key %v byte %v\n", k, k[0])
}
chunk.RLock()
vr, ok := chunk.rows[k]
if !ok || vr == nil {
chunk.RUnlock()
return vr, ENOKEY
}
chunk.RUnlock()
return vr, nil
}
func (s *Store) CreateKey(k Key, v Value, kt KeyType) *BRecord {
br := MakeBR(k, v, kt)
if *GStore {
x, ok := s.gstore.Put(gotomic.Key(k), unsafe.Pointer(br))
if ok {
fmt.Printf("Overwrote %v; already there? %v\n", k, x)
}
s.PrecomputeHashCode(k)
} else {
chunk := s.store[k[0]]
chunk.Lock()
chunk.rows[k] = br
chunk.Unlock()
}
return br
}
func (s *Store) CreateMuRLockedKey(k Key, kt KeyType) (*BRecord, error) {
br := MakeBR(k, nil, kt)
br.SRLock()
if *GStore {
ok := s.gstore.PutIfMissing(gotomic.Key(k), unsafe.Pointer(br))
if !ok {
dlog.Printf("Key already exists %v\n", k)
return nil, EEXISTS
}
} else {
chunk := s.store[k[0]]
chunk.Lock()
_, ok := chunk.rows[k]
if ok {
chunk.Unlock()
dlog.Printf("Key already exists %v\n", k)
return nil, EEXISTS
}
chunk.rows[k] = br
chunk.Unlock()
}
return br, nil
}
func (s *Store) PrecomputeHashCode(k Key) {
s.mu.Lock()
s.hash_codes[k] = gotomic.Key(k).HashCode()
s.mu.Unlock()
}
