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astaxie
2018-07-31 19:25:43 +08:00
parent 6d69047fff
commit d7b8aa8b52
474 changed files with 0 additions and 323280 deletions
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99
vendor/github.com/siddontang/ledisdb/store/leveldb/batch.go generated vendored
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@ -1,99 +0,0 @@
// +build leveldb
package leveldb
// #cgo LDFLAGS: -lleveldb
// #include "leveldb/c.h"
// #include "leveldb_ext.h"
import "C"
import (
"unsafe"
"github.com/syndtr/goleveldb/leveldb"
)
type WriteBatch struct {
db *DB
wbatch *C.leveldb_writebatch_t
}
func newWriteBatch(db *DB) *WriteBatch {
w := new(WriteBatch)
w.db = db
w.wbatch = C.leveldb_writebatch_create()
return w
}
func (w *WriteBatch) Close() {
if w.wbatch != nil {
C.leveldb_writebatch_destroy(w.wbatch)
w.wbatch = nil
}
}
func (w *WriteBatch) Put(key, value []byte) {
var k, v *C.char
if len(key) != 0 {
k = (*C.char)(unsafe.Pointer(&key[0]))
}
if len(value) != 0 {
v = (*C.char)(unsafe.Pointer(&value[0]))
}
lenk := len(key)
lenv := len(value)
C.leveldb_writebatch_put(w.wbatch, k, C.size_t(lenk), v, C.size_t(lenv))
}
func (w *WriteBatch) Delete(key []byte) {
C.leveldb_writebatch_delete(w.wbatch,
(*C.char)(unsafe.Pointer(&key[0])), C.size_t(len(key)))
}
func (w *WriteBatch) Commit() error {
return w.commit(w.db.writeOpts)
}
func (w *WriteBatch) SyncCommit() error {
return w.commit(w.db.syncOpts)
}
func (w *WriteBatch) Rollback() error {
C.leveldb_writebatch_clear(w.wbatch)
return nil
}
func (w *WriteBatch) commit(wb *WriteOptions) error {
var errStr *C.char
C.leveldb_write(w.db.db, wb.Opt, w.wbatch, &errStr)
if errStr != nil {
return saveError(errStr)
}
return nil
}
//export leveldb_writebatch_iterate_put
func leveldb_writebatch_iterate_put(p unsafe.Pointer, k *C.char, klen C.size_t, v *C.char, vlen C.size_t) {
b := (*leveldb.Batch)(p)
key := slice(unsafe.Pointer(k), int(klen))
value := slice(unsafe.Pointer(v), int(vlen))
b.Put(key, value)
}
//export leveldb_writebatch_iterate_delete
func leveldb_writebatch_iterate_delete(p unsafe.Pointer, k *C.char, klen C.size_t) {
b := (*leveldb.Batch)(p)
key := slice(unsafe.Pointer(k), int(klen))
b.Delete(key)
}
func (w *WriteBatch) Data() []byte {
gbatch := leveldb.Batch{}
C.leveldb_writebatch_iterate_ext(w.wbatch,
unsafe.Pointer(&gbatch))
return gbatch.Dump()
}

20
vendor/github.com/siddontang/ledisdb/store/leveldb/cache.go generated vendored
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@ -1,20 +0,0 @@
// +build leveldb
package leveldb
// #cgo LDFLAGS: -lleveldb
// #include <stdint.h>
// #include "leveldb/c.h"
import "C"
type Cache struct {
Cache *C.leveldb_cache_t
}
func NewLRUCache(capacity int) *Cache {
return &Cache{C.leveldb_cache_create_lru(C.size_t(capacity))}
}
func (c *Cache) Close() {
C.leveldb_cache_destroy(c.Cache)
}

3
vendor/github.com/siddontang/ledisdb/store/leveldb/const.go generated vendored
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@ -1,3 +0,0 @@
package leveldb
const DBName = "leveldb"

314
vendor/github.com/siddontang/ledisdb/store/leveldb/db.go generated vendored
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@ -1,314 +0,0 @@
// +build leveldb
// Package leveldb is a wrapper for c++ leveldb
package leveldb
/*
#cgo LDFLAGS: -lleveldb
#include <leveldb/c.h>
#include "leveldb_ext.h"
*/
import "C"
import (
"os"
"runtime"
"unsafe"
"github.com/siddontang/ledisdb/config"
"github.com/siddontang/ledisdb/store/driver"
)
const defaultFilterBits int = 10
type Store struct {
}
func (s Store) String() string {
return DBName
}
func (s Store) Open(path string, cfg *config.Config) (driver.IDB, error) {
if err := os.MkdirAll(path, 0755); err != nil {
return nil, err
}
db := new(DB)
db.path = path
db.cfg = &cfg.LevelDB
if err := db.open(); err != nil {
return nil, err
}
return db, nil
}
func (s Store) Repair(path string, cfg *config.Config) error {
db := new(DB)
db.cfg = &cfg.LevelDB
db.path = path
err := db.open()
defer db.Close()
//open ok, do not need repair
if err == nil {
return nil
}
var errStr *C.char
ldbname := C.CString(path)
defer C.leveldb_free(unsafe.Pointer(ldbname))
C.leveldb_repair_db(db.opts.Opt, ldbname, &errStr)
if errStr != nil {
return saveError(errStr)
}
return nil
}
type DB struct {
path string
cfg *config.LevelDBConfig
db *C.leveldb_t
opts *Options
//for default read and write options
readOpts *ReadOptions
writeOpts *WriteOptions
iteratorOpts *ReadOptions
syncOpts *WriteOptions
cache *Cache
filter *FilterPolicy
}
func (db *DB) open() error {
db.initOptions(db.cfg)
var errStr *C.char
ldbname := C.CString(db.path)
defer C.leveldb_free(unsafe.Pointer(ldbname))
db.db = C.leveldb_open(db.opts.Opt, ldbname, &errStr)
if errStr != nil {
db.db = nil
return saveError(errStr)
}
return nil
}
func (db *DB) initOptions(cfg *config.LevelDBConfig) {
opts := NewOptions()
opts.SetCreateIfMissing(true)
db.cache = NewLRUCache(cfg.CacheSize)
opts.SetCache(db.cache)
//we must use bloomfilter
db.filter = NewBloomFilter(defaultFilterBits)
opts.SetFilterPolicy(db.filter)
if !cfg.Compression {
opts.SetCompression(NoCompression)
} else {
opts.SetCompression(SnappyCompression)
}
opts.SetBlockSize(cfg.BlockSize)
opts.SetWriteBufferSize(cfg.WriteBufferSize)
opts.SetMaxOpenFiles(cfg.MaxOpenFiles)
opts.SetMaxFileSize(cfg.MaxFileSize)
db.opts = opts
db.readOpts = NewReadOptions()
db.writeOpts = NewWriteOptions()
db.syncOpts = NewWriteOptions()
db.syncOpts.SetSync(true)
db.iteratorOpts = NewReadOptions()
db.iteratorOpts.SetFillCache(false)
}
func (db *DB) Close() error {
if db.db != nil {
C.leveldb_close(db.db)
db.db = nil
}
db.opts.Close()
if db.cache != nil {
db.cache.Close()
}
if db.filter != nil {
db.filter.Close()
}
db.readOpts.Close()
db.writeOpts.Close()
db.iteratorOpts.Close()
return nil
}
func (db *DB) Put(key, value []byte) error {
return db.put(db.writeOpts, key, value)
}
func (db *DB) Get(key []byte) ([]byte, error) {
return db.get(db.readOpts, key)
}
func (db *DB) Delete(key []byte) error {
return db.delete(db.writeOpts, key)
}
func (db *DB) SyncPut(key []byte, value []byte) error {
return db.put(db.syncOpts, key, value)
}
func (db *DB) SyncDelete(key []byte) error {
return db.delete(db.syncOpts, key)
}
func (db *DB) NewWriteBatch() driver.IWriteBatch {
wb := newWriteBatch(db)
runtime.SetFinalizer(wb, func(w *WriteBatch) {
w.Close()
})
return wb
}
func (db *DB) NewIterator() driver.IIterator {
it := new(Iterator)
it.it = C.leveldb_create_iterator(db.db, db.iteratorOpts.Opt)
return it
}
func (db *DB) NewSnapshot() (driver.ISnapshot, error) {
snap := &Snapshot{
db: db,
snap: C.leveldb_create_snapshot(db.db),
readOpts: NewReadOptions(),
iteratorOpts: NewReadOptions(),
}
snap.readOpts.SetSnapshot(snap)
snap.iteratorOpts.SetSnapshot(snap)
snap.iteratorOpts.SetFillCache(false)
return snap, nil
}
func (db *DB) put(wo *WriteOptions, key, value []byte) error {
var errStr *C.char
var k, v *C.char
if len(key) != 0 {
k = (*C.char)(unsafe.Pointer(&key[0]))
}
if len(value) != 0 {
v = (*C.char)(unsafe.Pointer(&value[0]))
}
lenk := len(key)
lenv := len(value)
C.leveldb_put(
db.db, wo.Opt, k, C.size_t(lenk), v, C.size_t(lenv), &errStr)
if errStr != nil {
return saveError(errStr)
}
return nil
}
func (db *DB) get(ro *ReadOptions, key []byte) ([]byte, error) {
var errStr *C.char
var vallen C.size_t
var k *C.char
if len(key) != 0 {
k = (*C.char)(unsafe.Pointer(&key[0]))
}
value := C.leveldb_get(
db.db, ro.Opt, k, C.size_t(len(key)), &vallen, &errStr)
if errStr != nil {
return nil, saveError(errStr)
}
if value == nil {
return nil, nil
}
defer C.leveldb_free(unsafe.Pointer(value))
return C.GoBytes(unsafe.Pointer(value), C.int(vallen)), nil
}
func (db *DB) getSlice(ro *ReadOptions, key []byte) (driver.ISlice, error) {
var errStr *C.char
var vallen C.size_t
var k *C.char
if len(key) != 0 {
k = (*C.char)(unsafe.Pointer(&key[0]))
}
value := C.leveldb_get(
db.db, ro.Opt, k, C.size_t(len(key)), &vallen, &errStr)
if errStr != nil {
return nil, saveError(errStr)
}
if value == nil {
return nil, nil
}
return NewCSlice(unsafe.Pointer(value), int(vallen)), nil
}
func (db *DB) delete(wo *WriteOptions, key []byte) error {
var errStr *C.char
var k *C.char
if len(key) != 0 {
k = (*C.char)(unsafe.Pointer(&key[0]))
}
C.leveldb_delete(
db.db, wo.Opt, k, C.size_t(len(key)), &errStr)
if errStr != nil {
return saveError(errStr)
}
return nil
}
func (db *DB) Compact() error {
C.leveldb_compact_range(db.db, nil, 0, nil, 0)
return nil
}
func (db *DB) GetSlice(key []byte) (driver.ISlice, error) {
return db.getSlice(db.readOpts, key)
}
func init() {
driver.Register(Store{})
}

21
vendor/github.com/siddontang/ledisdb/store/leveldb/filterpolicy.go generated vendored
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@ -1,21 +0,0 @@
// +build leveldb
package leveldb
// #cgo LDFLAGS: -lleveldb
// #include <stdlib.h>
// #include "leveldb/c.h"
import "C"
type FilterPolicy struct {
Policy *C.leveldb_filterpolicy_t
}
func NewBloomFilter(bitsPerKey int) *FilterPolicy {
policy := C.leveldb_filterpolicy_create_bloom(C.int(bitsPerKey))
return &FilterPolicy{policy}
}
func (fp *FilterPolicy) Close() {
C.leveldb_filterpolicy_destroy(fp.Policy)
}

70
vendor/github.com/siddontang/ledisdb/store/leveldb/iterator.go generated vendored
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@ -1,70 +0,0 @@
// +build leveldb
package leveldb
// #cgo LDFLAGS: -lleveldb
// #include <stdlib.h>
// #include "leveldb/c.h"
// #include "leveldb_ext.h"
import "C"
import (
"unsafe"
)
type Iterator struct {
it *C.leveldb_iterator_t
isValid C.uchar
}
func (it *Iterator) Key() []byte {
var klen C.size_t
kdata := C.leveldb_iter_key(it.it, &klen)
if kdata == nil {
return nil
}
return slice(unsafe.Pointer(kdata), int(C.int(klen)))
}
func (it *Iterator) Value() []byte {
var vlen C.size_t
vdata := C.leveldb_iter_value(it.it, &vlen)
if vdata == nil {
return nil
}
return slice(unsafe.Pointer(vdata), int(C.int(vlen)))
}
func (it *Iterator) Close() error {
if it.it != nil {
C.leveldb_iter_destroy(it.it)
it.it = nil
}
return nil
}
func (it *Iterator) Valid() bool {
return ucharToBool(it.isValid)
}
func (it *Iterator) Next() {
it.isValid = C.leveldb_iter_next_ext(it.it)
}
func (it *Iterator) Prev() {
it.isValid = C.leveldb_iter_prev_ext(it.it)
}
func (it *Iterator) First() {
it.isValid = C.leveldb_iter_seek_to_first_ext(it.it)
}
func (it *Iterator) Last() {
it.isValid = C.leveldb_iter_seek_to_last_ext(it.it)
}
func (it *Iterator) Seek(key []byte) {
it.isValid = C.leveldb_iter_seek_ext(it.it, (*C.char)(unsafe.Pointer(&key[0])), C.size_t(len(key)))
}

95
vendor/github.com/siddontang/ledisdb/store/leveldb/leveldb_ext.cc generated vendored
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@ -1,95 +0,0 @@
// +build leveldb
#include "leveldb_ext.h"
#include <stdlib.h>
//#include <string>
//#include "leveldb/db.h"
//using namespace leveldb;
extern "C" {
// static bool SaveError(char** errptr, const Status& s) {
// assert(errptr != NULL);
// if (s.ok()) {
// return false;
// } else if (*errptr == NULL) {
// *errptr = strdup(s.ToString().c_str());
// } else {
// free(*errptr);
// *errptr = strdup(s.ToString().c_str());
// }
// return true;
// }
// void* leveldb_get_ext(
// leveldb_t* db,
// const leveldb_readoptions_t* options,
// const char* key, size_t keylen,
// char** valptr,
// size_t* vallen,
// char** errptr) {
// std::string *tmp = new(std::string);
// //very tricky, maybe changed with c++ leveldb upgrade
// Status s = (*(DB**)db)->Get(*(ReadOptions*)options, Slice(key, keylen), tmp);
// if (s.ok()) {
// *valptr = (char*)tmp->data();
// *vallen = tmp->size();
// } else {
// delete(tmp);
// tmp = NULL;
// *valptr = NULL;
// *vallen = 0;
// if (!s.IsNotFound()) {
// SaveError(errptr, s);
// }
// }
// return tmp;
// }
// void leveldb_get_free_ext(void* context) {
// std::string* s = (std::string*)context;
// delete(s);
// }
unsigned char leveldb_iter_seek_to_first_ext(leveldb_iterator_t* iter) {
leveldb_iter_seek_to_first(iter);
return leveldb_iter_valid(iter);
}
unsigned char leveldb_iter_seek_to_last_ext(leveldb_iterator_t* iter) {
leveldb_iter_seek_to_last(iter);
return leveldb_iter_valid(iter);
}
unsigned char leveldb_iter_seek_ext(leveldb_iterator_t* iter, const char* k, size_t klen) {
leveldb_iter_seek(iter, k, klen);
return leveldb_iter_valid(iter);
}
unsigned char leveldb_iter_next_ext(leveldb_iterator_t* iter) {
leveldb_iter_next(iter);
return leveldb_iter_valid(iter);
}
unsigned char leveldb_iter_prev_ext(leveldb_iterator_t* iter) {
leveldb_iter_prev(iter);
return leveldb_iter_valid(iter);
}
extern void leveldb_writebatch_iterate_put(void*, const char* k, size_t klen, const char* v, size_t vlen);
extern void leveldb_writebatch_iterate_delete(void*, const char* k, size_t klen);
void leveldb_writebatch_iterate_ext(leveldb_writebatch_t* w, void *p) {
leveldb_writebatch_iterate(w, p,
leveldb_writebatch_iterate_put, leveldb_writebatch_iterate_delete);
}
}

41
vendor/github.com/siddontang/ledisdb/store/leveldb/leveldb_ext.h generated vendored
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@ -1,41 +0,0 @@
// +build leveldb
#ifndef LEVELDB_EXT_H
#define LEVELDB_EXT_H
#ifdef __cplusplus
extern "C" {
#endif
#include "leveldb/c.h"
// /* Returns NULL if not found. Otherwise stores the value in **valptr.
// Stores the length of the value in *vallen.
// Returns a context must be later to free*/
// extern void* leveldb_get_ext(
// leveldb_t* db,
// const leveldb_readoptions_t* options,
// const char* key, size_t keylen,
// char** valptr,
// size_t* vallen,
// char** errptr);
// // Free context returns by leveldb_get_ext
// extern void leveldb_get_free_ext(void* context);
// Below iterator functions like leveldb iterator but returns valid status for iterator
extern unsigned char leveldb_iter_seek_to_first_ext(leveldb_iterator_t*);
extern unsigned char leveldb_iter_seek_to_last_ext(leveldb_iterator_t*);
extern unsigned char leveldb_iter_seek_ext(leveldb_iterator_t*, const char* k, size_t klen);
extern unsigned char leveldb_iter_next_ext(leveldb_iterator_t*);
extern unsigned char leveldb_iter_prev_ext(leveldb_iterator_t*);
extern void leveldb_writebatch_iterate_ext(leveldb_writebatch_t*, void* p);
#ifdef __cplusplus
}
#endif
#endif

7
vendor/github.com/siddontang/ledisdb/store/leveldb/levigo-license generated vendored
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@ -1,7 +0,0 @@
Copyright (c) 2012 Jeffrey M Hodges
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

126
vendor/github.com/siddontang/ledisdb/store/leveldb/options.go generated vendored
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@ -1,126 +0,0 @@
// +build leveldb
package leveldb
// #cgo LDFLAGS: -lleveldb
// #include "leveldb/c.h"
import "C"
type CompressionOpt int
const (
NoCompression = CompressionOpt(0)
SnappyCompression = CompressionOpt(1)
)
type Options struct {
Opt *C.leveldb_options_t
}
type ReadOptions struct {
Opt *C.leveldb_readoptions_t
}
type WriteOptions struct {
Opt *C.leveldb_writeoptions_t
}
func NewOptions() *Options {
opt := C.leveldb_options_create()
return &Options{opt}
}
func NewReadOptions() *ReadOptions {
opt := C.leveldb_readoptions_create()
return &ReadOptions{opt}
}
func NewWriteOptions() *WriteOptions {
opt := C.leveldb_writeoptions_create()
return &WriteOptions{opt}
}
func (o *Options) Close() {
C.leveldb_options_destroy(o.Opt)
}
func (o *Options) SetComparator(cmp *C.leveldb_comparator_t) {
C.leveldb_options_set_comparator(o.Opt, cmp)
}
func (o *Options) SetErrorIfExists(error_if_exists bool) {
eie := boolToUchar(error_if_exists)
C.leveldb_options_set_error_if_exists(o.Opt, eie)
}
func (o *Options) SetCache(cache *Cache) {
C.leveldb_options_set_cache(o.Opt, cache.Cache)
}
func (o *Options) SetWriteBufferSize(s int) {
C.leveldb_options_set_write_buffer_size(o.Opt, C.size_t(s))
}
func (o *Options) SetParanoidChecks(pc bool) {
C.leveldb_options_set_paranoid_checks(o.Opt, boolToUchar(pc))
}
func (o *Options) SetMaxOpenFiles(n int) {
C.leveldb_options_set_max_open_files(o.Opt, C.int(n))
}
func (o *Options) SetMaxFileSize(n int) {
C.leveldb_options_set_max_file_size(o.Opt, C.size_t(n))
}
func (o *Options) SetBlockSize(s int) {
C.leveldb_options_set_block_size(o.Opt, C.size_t(s))
}
func (o *Options) SetBlockRestartInterval(n int) {
C.leveldb_options_set_block_restart_interval(o.Opt, C.int(n))
}
func (o *Options) SetCompression(t CompressionOpt) {
C.leveldb_options_set_compression(o.Opt, C.int(t))
}
func (o *Options) SetCreateIfMissing(b bool) {
C.leveldb_options_set_create_if_missing(o.Opt, boolToUchar(b))
}
func (o *Options) SetFilterPolicy(fp *FilterPolicy) {
var policy *C.leveldb_filterpolicy_t
if fp != nil {
policy = fp.Policy
}
C.leveldb_options_set_filter_policy(o.Opt, policy)
}
func (ro *ReadOptions) Close() {
C.leveldb_readoptions_destroy(ro.Opt)
}
func (ro *ReadOptions) SetVerifyChecksums(b bool) {
C.leveldb_readoptions_set_verify_checksums(ro.Opt, boolToUchar(b))
}
func (ro *ReadOptions) SetFillCache(b bool) {
C.leveldb_readoptions_set_fill_cache(ro.Opt, boolToUchar(b))
}
func (ro *ReadOptions) SetSnapshot(snap *Snapshot) {
var s *C.leveldb_snapshot_t
if snap != nil {
s = snap.snap
}
C.leveldb_readoptions_set_snapshot(ro.Opt, s)
}
func (wo *WriteOptions) Close() {
C.leveldb_writeoptions_destroy(wo.Opt)
}
func (wo *WriteOptions) SetSync(b bool) {
C.leveldb_writeoptions_set_sync(wo.Opt, boolToUchar(b))
}

40
vendor/github.com/siddontang/ledisdb/store/leveldb/slice.go generated vendored
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@ -1,40 +0,0 @@
// +build leveldb
package leveldb
// #cgo LDFLAGS: -lleveldb
// #include "leveldb/c.h"
import "C"
import (
"reflect"
"unsafe"
)
type CSlice struct {
data unsafe.Pointer
size int
}
func NewCSlice(p unsafe.Pointer, n int) *CSlice {
return &CSlice{p, n}
}
func (s *CSlice) Data() []byte {
var value []byte
sH := (*reflect.SliceHeader)(unsafe.Pointer(&value))
sH.Cap = int(s.size)
sH.Len = int(s.size)
sH.Data = uintptr(s.data)
return value
}
func (s *CSlice) Size() int {
return int(s.size)
}
func (s *CSlice) Free() {
C.leveldb_free(s.data)
}

39
vendor/github.com/siddontang/ledisdb/store/leveldb/snapshot.go generated vendored
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@ -1,39 +0,0 @@
// +build leveldb
package leveldb
// #cgo LDFLAGS: -lleveldb
// #include "leveldb/c.h"
import "C"
import (
"github.com/siddontang/ledisdb/store/driver"
)
type Snapshot struct {
db *DB
snap *C.leveldb_snapshot_t
readOpts *ReadOptions
iteratorOpts *ReadOptions
}
func (s *Snapshot) Get(key []byte) ([]byte, error) {
return s.db.get(s.readOpts, key)
}
func (s *Snapshot) GetSlice(key []byte) (driver.ISlice, error) {
return s.db.getSlice(s.readOpts, key)
}
func (s *Snapshot) NewIterator() driver.IIterator {
it := new(Iterator)
it.it = C.leveldb_create_iterator(s.db.db, s.db.iteratorOpts.Opt)
return it
}
func (s *Snapshot) Close() {
C.leveldb_release_snapshot(s.db.db, s.snap)
s.iteratorOpts.Close()
s.readOpts.Close()
}

45
vendor/github.com/siddontang/ledisdb/store/leveldb/util.go generated vendored
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@ -1,45 +0,0 @@
// +build leveldb
package leveldb
// #include "leveldb/c.h"
import "C"
import (
"fmt"
"reflect"
"unsafe"
)
func boolToUchar(b bool) C.uchar {
uc := C.uchar(0)
if b {
uc = C.uchar(1)
}
return uc
}
func ucharToBool(uc C.uchar) bool {
if uc == C.uchar(0) {
return false
}
return true
}
func saveError(errStr *C.char) error {
if errStr != nil {
gs := C.GoString(errStr)
C.leveldb_free(unsafe.Pointer(errStr))
return fmt.Errorf(gs)
}
return nil
}
func slice(p unsafe.Pointer, n int) []byte {
var b []byte
pbyte := (*reflect.SliceHeader)(unsafe.Pointer(&b))
pbyte.Data = uintptr(p)
pbyte.Len = n
pbyte.Cap = n
return b
}