tsdbMain.h 14.8 KB
Newer Older
H
more  
hzcheng 已提交
1 2 3 4 5 6 7 8 9 10 11 12 13 14
/*
 * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
 *
 * This program is free software: you can use, redistribute, and/or modify
 * it under the terms of the GNU Affero General Public License, version 3
 * or later ("AGPL"), as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
H
TD-34  
hzcheng 已提交
15 16
#ifndef _TD_TSDB_MAIN_H_
#define _TD_TSDB_MAIN_H_
H
more  
Hongze Cheng 已提交
17

S
slguan 已提交
18
#include "tglobal.h"
H
hzcheng 已提交
19 20
#include "tlist.h"
#include "tsdb.h"
H
TD-34  
hzcheng 已提交
21 22
#include "tskiplist.h"
#include "tutil.h"
H
more  
Hongze Cheng 已提交
23

H
more  
hzcheng 已提交
24 25 26 27
#ifdef __cplusplus
extern "C" {
#endif

H
TD-34  
hzcheng 已提交
28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
// ------------------------------ TSDB META FILE INTERFACES ------------------------------
#define TSDB_META_FILE_NAME "META"
#define TSDB_META_HASH_FRACTION 1.1

typedef int (*iterFunc)(void *, void *cont, int contLen);
typedef void (*afterFunc)(void *);

typedef struct {
  int       fd;        // File descriptor
  int       nDel;      // number of deletions
  int       tombSize;  // deleted size
  int64_t   size;      // Total file size
  void *    map;       // Map from uid ==> position
  iterFunc  iFunc;
  afterFunc aFunc;
  void *    appH;
} SMetaFile;

SMetaFile *tsdbInitMetaFile(char *rootDir, int32_t maxTables, iterFunc iFunc, afterFunc aFunc, void *appH);
int32_t    tsdbInsertMetaRecord(SMetaFile *mfh, int64_t uid, void *cont, int32_t contLen);
int32_t    tsdbDeleteMetaRecord(SMetaFile *mfh, int64_t uid);
int32_t    tsdbUpdateMetaRecord(SMetaFile *mfh, int64_t uid, void *cont, int32_t contLen);
void       tsdbCloseMetaFile(SMetaFile *mfh);

// ------------------------------ TSDB META INTERFACES ------------------------------
#define IS_CREATE_STABLE(pCfg) ((pCfg)->tagValues != NULL)

typedef struct {
  TSKEY   keyFirst;
  TSKEY   keyLast;
  int32_t numOfPoints;
  void *  pData;
} SMemTable;

// ---------- TSDB TABLE DEFINITION
typedef struct STable {
  int8_t         type;
H
hzcheng 已提交
65
  char *         name;
H
TD-34  
hzcheng 已提交
66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81
  STableId       tableId;
  int64_t        superUid;  // Super table UID
  int32_t        sversion;
  STSchema *     schema;
  STSchema *     tagSchema;
  SDataRow       tagVal;
  SMemTable *    mem;
  SMemTable *    imem;
  void *         pIndex;         // For TSDB_SUPER_TABLE, it is the skiplist index
  void *         eventHandler;   // TODO
  void *         streamHandler;  // TODO
  struct STable *next;           // TODO: remove the next
} STable;

void *  tsdbEncodeTable(STable *pTable, int *contLen);
STable *tsdbDecodeTable(void *cont, int contLen);
H
hzcheng 已提交
82
void    tsdbFreeEncode(void *cont);
H
TD-34  
hzcheng 已提交
83 84 85 86 87 88 89 90 91 92 93

// ---------- TSDB META HANDLE DEFINITION
typedef struct {
  int32_t maxTables;  // Max number of tables

  int32_t nTables;  // Tables created

  STable **tables;  // table array

  STable *superList;  // super table list TODO: change  it to list container

H
hzcheng 已提交
94
  void *map;  // table map of (uid ===> table)
H
TD-34  
hzcheng 已提交
95

H
hzcheng 已提交
96
  SMetaFile *mfh;  // meta file handle
H
TD-34  
hzcheng 已提交
97 98 99 100
  int        maxRowBytes;
  int        maxCols;
} STsdbMeta;

H
hzcheng 已提交
101
STsdbMeta *tsdbInitMeta(char *rootDir, int32_t maxTables);
H
TD-34  
hzcheng 已提交
102 103
int32_t    tsdbFreeMeta(STsdbMeta *pMeta);
STSchema * tsdbGetTableSchema(STsdbMeta *pMeta, STable *pTable);
104
STSchema * tsdbGetTableTagSchema(STsdbMeta *pMeta, STable *pTable);
H
TD-34  
hzcheng 已提交
105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122

// ---- Operation on STable
#define TSDB_TABLE_ID(pTable) ((pTable)->tableId)
#define TSDB_TABLE_UID(pTable) ((pTable)->uid)
#define TSDB_TABLE_NAME(pTable) ((pTable)->tableName)
#define TSDB_TABLE_TYPE(pTable) ((pTable)->type)
#define TSDB_TABLE_SUPER_TABLE_UID(pTable) ((pTable)->stableUid)
#define TSDB_TABLE_IS_SUPER_TABLE(pTable) (TSDB_TABLE_TYPE(pTable) == TSDB_SUPER_TABLE)
#define TSDB_TABLE_TAG_VALUE(pTable) ((pTable)->pTagVal)
#define TSDB_TABLE_CACHE_DATA(pTable) ((pTable)->content.pData)
#define TSDB_SUPER_TABLE_INDEX(pTable) ((pTable)->content.pIndex)

// ---- Operation on SMetaHandle
#define TSDB_NUM_OF_TABLES(pHandle) ((pHandle)->numOfTables)
#define TSDB_NUM_OF_SUPER_TABLES(pHandle) ((pHandle)->numOfSuperTables)
#define TSDB_TABLE_OF_ID(pHandle, id) ((pHandle)->pTables)[id]
#define TSDB_GET_TABLE_OF_NAME(pHandle, name) /* TODO */

H
hzcheng 已提交
123
STsdbMeta *tsdbGetMeta(TsdbRepoT *pRepo);
H
TD-34  
hzcheng 已提交
124 125 126 127 128 129

int32_t tsdbCreateTableImpl(STsdbMeta *pMeta, STableCfg *pCfg);
int32_t tsdbDropTableImpl(STsdbMeta *pMeta, STableId tableId);
STable *tsdbIsValidTableToInsert(STsdbMeta *pMeta, STableId tableId);
// int32_t tsdbInsertRowToTableImpl(SSkipListNode *pNode, STable *pTable);
STable *tsdbGetTableByUid(STsdbMeta *pMeta, int64_t uid);
H
hzcheng 已提交
130
char *  getTupleKey(const void *data);
H
TD-34  
hzcheng 已提交
131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162

// ------------------------------ TSDB CACHE INTERFACES ------------------------------
#define TSDB_DEFAULT_CACHE_BLOCK_SIZE 16 * 1024 * 1024 /* 16M */

typedef struct {
  int  blockId;
  int  offset;
  int  remain;
  int  padding;
  char data[];
} STsdbCacheBlock;

typedef struct {
  int64_t index;
  SList * memPool;
} STsdbCachePool;

typedef struct {
  TSKEY   keyFirst;
  TSKEY   keyLast;
  int64_t numOfPoints;
  SList * list;
} SCacheMem;

typedef struct {
  int              maxBytes;
  int              cacheBlockSize;
  int              totalCacheBlocks;
  STsdbCachePool   pool;
  STsdbCacheBlock *curBlock;
  SCacheMem *      mem;
  SCacheMem *      imem;
H
hzcheng 已提交
163
  TsdbRepoT *    pRepo;
H
TD-34  
hzcheng 已提交
164 165
} STsdbCache;

H
hzcheng 已提交
166
STsdbCache *tsdbInitCache(int maxBytes, int cacheBlockSize, TsdbRepoT *pRepo);
H
TD-34  
hzcheng 已提交
167 168 169 170
void        tsdbFreeCache(STsdbCache *pCache);
void *      tsdbAllocFromCache(STsdbCache *pCache, int bytes, TSKEY key);

// ------------------------------ TSDB FILE INTERFACES ------------------------------
H
TD-34  
hzcheng 已提交
171
#define TSDB_FILE_HEAD_SIZE 512
H
TD-34  
hzcheng 已提交
172
#define TSDB_FILE_DELIMITER 0xF00AFA0F
H
TD-34  
hzcheng 已提交
173

H
TD-34  
hzcheng 已提交
174 175 176
#define tsdbGetKeyFileId(key, daysPerFile, precision) ((key) / tsMsPerDay[(precision)] / (daysPerFile))
#define tsdbGetMaxNumOfFiles(keep, daysPerFile) ((keep) / (daysPerFile) + 3)

H
Hongze Cheng 已提交
177
typedef enum {
H
TD-34  
hzcheng 已提交
178 179 180 181
  TSDB_FILE_TYPE_HEAD = 0,  // .head file type
  TSDB_FILE_TYPE_DATA,      // .data file type
  TSDB_FILE_TYPE_LAST,      // .last file type
  TSDB_FILE_TYPE_MAX
H
more  
Hongze Cheng 已提交
182 183
} TSDB_FILE_TYPE;

H
TD-34  
hzcheng 已提交
184 185
#define IS_VALID_TSDB_FILE_TYPE(type) ((type) >= TSDB_FILE_TYPE_HEAD && (type) < TSDB_FILE_TYPE_MAX)

H
more  
hzcheng 已提交
186
extern const char *tsdbFileSuffix[];
H
Hongze Cheng 已提交
187

H
more  
Hongze Cheng 已提交
188
typedef struct {
H
TD-34  
hzcheng 已提交
189 190
  int64_t size;      // total size of the file
  int64_t tombSize;  // unused file size
H
TD-34  
hzcheng 已提交
191 192
  int32_t totalBlocks;
  int32_t totalSubBlocks;
H
TD-34  
hzcheng 已提交
193 194 195
} SFileInfo;

typedef struct {
H
hzcheng 已提交
196 197
  int       fd;
  char      fname[128];
H
TD-34  
hzcheng 已提交
198
  SFileInfo info;
H
hzcheng 已提交
199
} SFile;
H
more  
Hongze Cheng 已提交
200

H
TD-34  
hzcheng 已提交
201 202
#define TSDB_IS_FILE_OPENED(f) ((f)->fd != -1)

H
hzcheng 已提交
203 204
typedef struct {
  int32_t fileId;
H
TD-34  
hzcheng 已提交
205
  SFile   files[TSDB_FILE_TYPE_MAX];
H
hzcheng 已提交
206 207 208 209
} SFileGroup;

// TSDB file handle
typedef struct {
H
TD-34  
hzcheng 已提交
210 211 212
  int maxFGroups;
  int numOfFGroups;

H
hzcheng 已提交
213 214
  SFileGroup fGroup[];
} STsdbFileH;
H
more  
Hongze Cheng 已提交
215

H
TD-34  
hzcheng 已提交
216 217 218 219 220
#define TSDB_MIN_FILE_ID(fh) (fh)->fGroup[0].fileId
#define TSDB_MAX_FILE_ID(fh) (fh)->fGroup[(fh)->numOfFGroups - 1].fileId

STsdbFileH *tsdbInitFileH(char *dataDir, int maxFiles);
void        tsdbCloseFileH(STsdbFileH *pFileH);
H
hzcheng 已提交
221 222 223
int         tsdbCreateFile(char *dataDir, int fileId, const char *suffix, int maxTables, SFile *pFile, int writeHeader,
                           int toClose);
SFileGroup *tsdbCreateFGroup(STsdbFileH *pFileH, char *dataDir, int fid, int maxTables);
H
TD-34  
hzcheng 已提交
224
int         tsdbOpenFile(SFile *pFile, int oflag);
H
hzcheng 已提交
225 226
int         tsdbCloseFile(SFile *pFile);
SFileGroup *tsdbOpenFilesForCommit(STsdbFileH *pFileH, int fid);
H
TD-34  
hzcheng 已提交
227
int         tsdbRemoveFileGroup(STsdbFileH *pFile, int fid);
H
hzcheng 已提交
228
int         tsdbGetFileName(char *dataDir, int fileId, const char *suffix, char *fname);
H
TD-34  
hzcheng 已提交
229

H
hzcheng 已提交
230
#define TSDB_FGROUP_ITER_FORWARD TSDB_ORDER_ASC
231 232
#define TSDB_FGROUP_ITER_BACKWARD TSDB_ORDER_DESC

H
TD-34  
hzcheng 已提交
233 234 235 236 237 238 239 240 241 242 243
typedef struct {
  int         numOfFGroups;
  SFileGroup *base;
  SFileGroup *pFileGroup;
  int         direction;
} SFileGroupIter;

void        tsdbInitFileGroupIter(STsdbFileH *pFileH, SFileGroupIter *pIter, int direction);
void        tsdbSeekFileGroupIter(SFileGroupIter *pIter, int fid);
SFileGroup *tsdbGetFileGroupNext(SFileGroupIter *pIter);

H
TD-34  
hzcheng 已提交
244 245
typedef struct {
  int32_t len;
H
TD-34  
hzcheng 已提交
246 247
  int32_t offset;
  int32_t hasLast : 1;
H
hzcheng 已提交
248
  int32_t numOfBlocks : 31;
H
TD-34  
hzcheng 已提交
249 250 251
  int32_t checksum;
  TSKEY   maxKey;
} SCompIdx; /* sizeof(SCompIdx) = 24 */
H
TD-34  
hzcheng 已提交
252

253
/**
H
TD-34  
hzcheng 已提交
254 255 256 257 258 259
 * if numOfSubBlocks == 0, then the SCompBlock is a sub-block
 * if numOfSubBlocks >= 1, then the SCompBlock is a super-block
 *    - if numOfSubBlocks == 1, then the SCompBlock refers to the data block, and offset/len refer to
 *      the data block offset and length
 *    - if numOfSubBlocks > 1, then the offset/len refer to the offset of the first sub-block in the
 *      binary
260 261 262 263 264 265 266 267 268 269 270 271 272 273
 */
typedef struct {
  int64_t last : 1;          // If the block in data file or last file
  int64_t offset : 63;       // Offset of data block or sub-block index depending on numOfSubBlocks
  int32_t algorithm : 8;     // Compression algorithm
  int32_t numOfPoints : 24;  // Number of total points
  int32_t sversion;          // Schema version
  int32_t len;               // Data block length or nothing
  int16_t numOfSubBlocks;    // Number of sub-blocks;
  int16_t numOfCols;
  TSKEY   keyFirst;
  TSKEY   keyLast;
} SCompBlock;

H
hzcheng 已提交
274 275
// Maximum number of sub-blocks a super-block can have
#define TSDB_MAX_SUBBLOCKS 8
H
TD-34  
hzcheng 已提交
276 277 278
#define IS_SUPER_BLOCK(pBlock) ((pBlock)->numOfSubBlocks >= 1)
#define IS_SUB_BLOCK(pBlock) ((pBlock)->numOfSubBlocks == 0)

H
TD-34  
hzcheng 已提交
279 280 281 282 283 284
typedef struct {
  int32_t    delimiter;  // For recovery usage
  int32_t    checksum;   // TODO: decide if checksum logic in this file or make it one API
  int64_t    uid;
  SCompBlock blocks[];
} SCompInfo;
H
hzcheng 已提交
285

H
TD-34  
hzcheng 已提交
286
#define TSDB_COMPBLOCK_AT(pCompInfo, idx) ((pCompInfo)->blocks + (idx))
H
hzcheng 已提交
287 288 289 290 291 292 293 294 295
#define TSDB_COMPBLOCK_GET_START_AND_SIZE(pCompInfo, pCompBlock, size) \
  do {                                                                 \
    if (pCompBlock->numOfSubBlocks > 1) {                              \
      pCompBlock = pCompInfo->blocks + pCompBlock->offset;             \
      size = pCompBlock->numOfSubBlocks;                               \
    } else {                                                           \
      size = 1;                                                        \
    }                                                                  \
  } while (0)
H
TD-34  
hzcheng 已提交
296

H
TD-34  
hzcheng 已提交
297 298 299 300 301 302 303 304 305 306 307 308 309 310 311
// TODO: take pre-calculation into account
typedef struct {
  int16_t colId;  // Column ID
  int16_t len;    // Column length
  int32_t type : 8;
  int32_t offset : 24;
} SCompCol;

// TODO: Take recover into account
typedef struct {
  int32_t  delimiter;  // For recovery usage
  int32_t  numOfCols;  // For recovery usage
  int64_t  uid;        // For recovery usage
  SCompCol cols[];
} SCompData;
H
TD-34  
hzcheng 已提交
312

H
hzcheng 已提交
313
STsdbFileH *tsdbGetFile(TsdbRepoT *pRepo);
H
TD-34  
hzcheng 已提交
314

H
hzcheng 已提交
315 316
int         tsdbCopyBlockDataInFile(SFile *pOutFile, SFile *pInFile, SCompInfo *pCompInfo, int idx, int isLast,
                                    SDataCols *pCols);
H
TD-34  
hzcheng 已提交
317
SFileGroup *tsdbSearchFGroup(STsdbFileH *pFileH, int fid);
H
TD-34  
hzcheng 已提交
318
void tsdbGetKeyRangeOfFileId(int32_t daysPerFile, int8_t precision, int32_t fileId, TSKEY *minKey, TSKEY *maxKey);
H
TD-34  
hzcheng 已提交
319 320 321 322 323 324 325

// TSDB repository definition
typedef struct _tsdb_repo {
  char *rootDir;
  // TSDB configuration
  STsdbCfg config;

H
hzcheng 已提交
326 327
  STsdbAppH appH;

H
TD-34  
hzcheng 已提交
328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351
  // The meter meta handle of this TSDB repository
  STsdbMeta *tsdbMeta;

  // The cache Handle
  STsdbCache *tsdbCache;

  // The TSDB file handle
  STsdbFileH *tsdbFileH;

  // Disk tier handle for multi-tier storage
  void *diskTier;

  pthread_mutex_t mutex;

  int       commit;
  pthread_t commitThread;

  // A limiter to monitor the resources used by tsdb
  void *limiter;

  int8_t state;

} STsdbRepo;

H
hzcheng 已提交
352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372
typedef struct {
  int32_t  totalLen;
  int32_t  len;
  SDataRow row;
} SSubmitBlkIter;

int      tsdbInitSubmitBlkIter(SSubmitBlk *pBlock, SSubmitBlkIter *pIter);
SDataRow tsdbGetSubmitBlkNext(SSubmitBlkIter *pIter);

#define TSDB_SUBMIT_MSG_HEAD_SIZE sizeof(SSubmitMsg)

// SSubmitMsg Iterator
typedef struct {
  int32_t     totalLen;
  int32_t     len;
  SSubmitBlk *pBlock;
} SSubmitMsgIter;

int         tsdbInitSubmitMsgIter(SSubmitMsg *pMsg, SSubmitMsgIter *pIter);
SSubmitBlk *tsdbGetSubmitMsgNext(SSubmitMsgIter *pIter);

H
hzcheng 已提交
373 374 375
int32_t tsdbTriggerCommit(TsdbRepoT *repo);
int32_t tsdbLockRepo(TsdbRepoT *repo);
int32_t tsdbUnLockRepo(TsdbRepoT *repo);
H
TD-34  
hzcheng 已提交
376

H
hzcheng 已提交
377 378 379 380
typedef enum { TSDB_WRITE_HELPER, TSDB_READ_HELPER } tsdb_rw_helper_t;

typedef struct {
  tsdb_rw_helper_t type;  // helper type
H
TD-100  
hzcheng 已提交
381 382 383 384 385 386 387 388

  int    maxTables;
  int    maxRowSize;
  int    maxRows;
  int    maxCols;
  int    minRowsPerFileBlock;
  int    maxRowsPerFileBlock;
  int8_t compress;
H
hzcheng 已提交
389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413
} SHelperCfg;

typedef struct {
  int fid;
  TSKEY minKey;
  TSKEY maxKey;
  // For read/write purpose
  SFile headF;
  SFile dataF;
  SFile lastF;
  // For write purpose only
  SFile nHeadF;
  SFile nLastF;
} SHelperFile;

typedef struct {
  int64_t uid;
  int32_t tid;
  int32_t sversion;
} SHelperTable;

typedef struct {
  // Global configuration
  SHelperCfg config;

H
TD-100  
hzcheng 已提交
414 415 416
  int8_t state;

  // For file set usage
H
hzcheng 已提交
417
  SHelperFile files;
H
TD-100  
hzcheng 已提交
418
  SCompIdx *  pCompIdx;
H
hzcheng 已提交
419

H
TD-100  
hzcheng 已提交
420
  // For table set usage
H
hzcheng 已提交
421
  SHelperTable tableInfo;
H
TD-100  
hzcheng 已提交
422 423
  SCompInfo *  pCompInfo;
  bool         hasOldLastBlock;
H
hzcheng 已提交
424

H
TD-100  
hzcheng 已提交
425
  // For block set usage
H
hzcheng 已提交
426 427 428 429 430 431
  SCompData *pCompData;
  SDataCols *pDataCols[2];

} SRWHelper;

// --------- Helper state
H
TD-100  
hzcheng 已提交
432 433 434 435 436 437
#define TSDB_HELPER_CLEAR_STATE 0x0        // Clear state
#define TSDB_HELPER_FILE_SET_AND_OPEN 0x1  // File is set
#define TSDB_HELPER_IDX_LOAD 0x2           // SCompIdx part is loaded
#define TSDB_HELPER_TABLE_SET 0x4          // Table is set
#define TSDB_HELPER_INFO_LOAD 0x8          // SCompInfo part is loaded
#define TSDB_HELPER_FILE_DATA_LOAD 0x10    // SCompData part is loaded
H
hzcheng 已提交
438 439 440 441 442 443

#define TSDB_HELPER_TYPE(h) ((h)->config.type)

#define helperSetState(h, s) (((h)->state) |= (s))
#define helperClearState(h, s) ((h)->state &= (~(s)))
#define helperHasState(h, s) ((((h)->state) & (s)) == (s))
H
TD-100  
hzcheng 已提交
444
#define blockAtIdx(h, idx) ((h)->pCompInfo->blocks + idx)
H
hzcheng 已提交
445

H
TD-100  
hzcheng 已提交
446 447 448
int  tsdbInitReadHelper(SRWHelper *pHelper, STsdbRepo *pRepo);
int  tsdbInitWriteHelper(SRWHelper *pHelper, STsdbRepo *pRepo);
// int  tsdbInitHelper(SRWHelper *pHelper, SHelperCfg *pCfg);
H
hzcheng 已提交
449
void tsdbDestroyHelper(SRWHelper *pHelper);
H
TD-100  
hzcheng 已提交
450
void tsdbResetHelper(SRWHelper *pHelper);
H
hzcheng 已提交
451 452

// --------- For set operations
H
TD-100  
hzcheng 已提交
453 454 455
int tsdbSetAndOpenHelperFile(SRWHelper *pHelper, SFileGroup *pGroup);
// void tsdbSetHelperTable(SRWHelper *pHelper, SHelperTable *pHelperTable, STSchema *pSchema);
void tsdbSetHelperTable(SRWHelper *pHelper, STable *pTable, STsdbRepo *pRepo);
H
hzcheng 已提交
456 457 458 459 460
int  tsdbCloseHelperFile(SRWHelper *pHelper, bool hasError);

// --------- For read operations
int tsdbLoadCompIdx(SRWHelper *pHelper, void *target);
int tsdbLoadCompInfo(SRWHelper *pHelper, void *target);
H
TD-100  
hzcheng 已提交
461 462
int tsdbLoadCompData(SRWHelper *pHelper, SCompBlock *pCompBlock, void *target);
int tsdbLoadBlockDataCols(SRWHelper *pHelper, SDataCols *pDataCols, int blkIdx, int16_t *colIds, int numOfColIds);
H
TD-100  
hzcheng 已提交
463
int tsdbLoadBlockData(SRWHelper *pHelper, SCompBlock *pCompBlock, SDataCols *target);
H
hzcheng 已提交
464 465 466 467 468 469

// --------- For write operations
int tsdbWriteDataBlock(SRWHelper *pHelper, SDataCols *pDataCols);
int tsdbMoveLastBlockIfNeccessary(SRWHelper *pHelper);
int tsdbWriteCompInfo(SRWHelper *pHelper);
int tsdbWriteCompIdx(SRWHelper *pHelper);
H
TD-34  
hzcheng 已提交
470

H
more  
hzcheng 已提交
471 472 473 474
#ifdef __cplusplus
}
#endif

H
TD-34  
hzcheng 已提交
475
#endif