lets/c_src/lets_drv_lib.h
Joseph Wayne Norton 4a2b2d6ac3 Initial commit
2011-10-26 23:09:08 +09:00

100 lines
3 KiB
C++

// The MIT License
//
// Copyright (C) 2011 by Joseph Wayne Norton <norton@alum.mit.edu>
//
// 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.
#ifndef LETS_DRV_LIB_H
#define LETS_DRV_LIB_H
#include <string>
#include "leveldb/db.h"
#include "leveldb/cache.h"
#include "leveldb/slice.h"
#include "leveldb/write_batch.h"
#include "erl_driver.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
long buflen;
char buf[1];
} Binary;
enum Type {
SET = 0x0,
ORDERED_SET = 0x1
};
enum PrivacyType {
PRIVATE = 0x0,
PROTECTED = 0x1,
PUBLIC = 0x2
};
enum DBOpType {
OPEN = 0x0,
DESTROY = 0x1,
REPAIR = 0x2
};
typedef struct
{
char alive;
char type;
char privacy;
std::string* name;
leveldb::Options db_options;
leveldb::ReadOptions db_read_options;
leveldb::WriteOptions db_write_options;
size_t db_block_cache_size;
leveldb::Cache* db_block_cache;
leveldb::DB* db;
ErlDrvUInt64 db_memory;
ErlDrvUInt64 db_size;
} lets_impl;
// prototypes
extern bool lets_drv_lib_init();
extern bool lets_init(lets_impl& impl,
const char type, const char privacy, const char* name, const size_t namelen);
extern bool lets_create(lets_impl& impl,
const char op);
extern bool lets_parse_options(lets_impl& impl,
const char* buf, int len);
extern bool lets_parse_read_options(lets_impl& impl,
const char* buf, int len);
extern bool lets_parse_write_options(lets_impl& impl,
const char* buf, int len);
// helpers
extern int ei_inspect_atom(const char *buf, int *index, char *p);
extern int ei_inspect_binary(const char *buf, int *index, void **p, long *lenp);
#ifdef __cplusplus
}
#endif
#endif /* LETS_DRV_LIB_H */