stasis-aries-wal/stasis/constants.h

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---*/
/**
 * @file
 *
 * defines various constants
 *
 * @todo Sometime, LLADD's \#includes need to be cleaned up.  In
 * particular, we should make sure everything directly or indirectly
 * includes this file, common.h, and constants.h
 *
 * @ingroup LLADD_CORE
 *
 * $Id$
 */

#ifndef __CONSTANTS_H__
#define __CONSTANTS_H__

/*#define DEBUG 1*/

/*
   define error codes
 */
#define LLADD_DEADLOCK       -1
#define LLADD_NO_MEM         -2
#define LLADD_IO_ERROR       -3
#define LLADD_INTERNAL_ERROR -4
/**
 * Currently, Stasis has a fixed number of transactions that may be
 * active at one time.
 */
#define LLADD_EXCEED_MAX_TRANSACTIONS -5

#define PAGE_SIZE 4096

#define LOG_TO_FILE   0
#define LOG_TO_MEMORY 1
#define LOG_TO_DIR    2

#define VOLATILE   0
#define PERSISTENT 1
#define DURABLE    2

#define STASIS_BUFFER_MANAGER_PREALLOCATE_DEFAULT  1
#define STASIS_BUFFER_MANAGER_PREALLOCATE_DISABLED 2
#define STASIS_BUFFER_MANAGER_PREALLOCATE_LEGACY   3

#define STASIS_REPLACEMENT_POLICY_THREADSAFE_LRU 1
#define STASIS_REPLACEMENT_POLICY_CONCURRENT_LRU 2
#define STASIS_REPLACEMENT_POLICY_CLOCK 3

#define MAX_TRANSACTIONS 1000

/** Operation types */

#define OPERATION_INVALID     (UCHAR_MAX)

#define OPERATION_SET          0
#define OPERATION_SET_INVERSE  1
#define OPERATION_INCREMENT    2
#define OPERATION_DECREMENT    3
#define OPERATION_ALLOC        4
#define OPERATION_PREPARE      5
#define OPERATION_SET_LSN_FREE 6
#define OPERATION_SET_LSN_FREE_INVERSE 7
#define OPERATION_DEALLOC      8
#define OPERATION_REALLOC      9

#define OPERATION_PAGE_SET_RANGE     10
#define OPERATION_PAGE_SET_RANGE_INVERSE 11

#define OPERATION_SEGMENT_FILE_PWRITE 12
#define OPERATION_SEGMENT_FILE_PWRITE_INVERSE 13

// 14
// 15
// 16
// 17
// 18

#define OPERATION_NOOP        19
//20
#define OPERATION_ARRAY_LIST_HEADER_INIT 21

#define OPERATION_INITIALIZE_PAGE 22
#define OPERATION_INITIALIZE_MULTIPAGE 23

#define OPERATION_SET_RANGE 27
#define OPERATION_SET_RANGE_INVERSE 28
#define OPERATION_LINKED_LIST_INSERT 29
#define OPERATION_LINKED_LIST_REMOVE 30
#define OPERATION_LINEAR_HASH_INSERT 31
#define OPERATION_LINEAR_HASH_REMOVE 32

//#define OPERATION_SET_RAW    33
//#define OPERATION_INSTANT_SET_RAW 34

#define OPERATION_ALLOC_BOUNDARY_TAG 35

//#define OPERATION_FIXED_PAGE_ALLOC 36

#define OPERATION_ALLOC_REGION 37
#define OPERATION_ALLOC_REGION_INVERSE 38

#define OPERATION_DEALLOC_REGION 39
#define OPERATION_DEALLOC_REGION_INVERSE 40

#define OPERATION_USER_DEFINED(x) (x+128)

/* number above should be less than number below */
#define MAX_OPERATIONS 255

/* Storage managers */
#define STORAGE_MANAGER_TALLOC 1
#define STORAGE_MANAGER_NAIVE_PAGE_ALLOC  2

//#define SLOT_TYPE_BASE PAGE_SIZE

#define INVALID_XID (-1)

#define INVALID_LSN (-1)
#define INVALID_SIZE (-1)
/** This constant is used as a placeholder to mark slot locations that are invalid.
    @see slotted.c, indirect.c
*/
#define INVALID_SLOT  (-1)
/** This constant is used as a placeholder to mark slot locations that contain blobs.
    @see slotted.c, indirect.c,  blobManager.c  */
#define BLOB_SLOT     (-2)
#define NORMAL_SLOT  (-3)
#define SLOT_TYPE_END (-4)

#define INVALID_PAGE (-1)
#define SEGMENT_PAGEID (-2)
#define MULTI_PAGEID (-3)

//   TODO unify naming convention for ROOT_RECORD, NULLRID
static const recordid ROOT_RECORD = {1, 0, -1};
static const recordid NULLRID = {0,0,-1};
static const short SLOT_TYPE_LENGTHS[] = { -1, -1, sizeof(blob_record_t), -1};

#define BLOB_THRESHOLD_SIZE (PAGE_SIZE-30)

#define BITS_PER_BYTE 8

/** Log entry types.  (Not to be confused with operation types, which are more interesting.) */


/*
  Definitions for different types of logs
*/
/* A log type reservered for the log implementation.  Its format
   depends on the physical log's implementation.  Most other code
   (recovery, abort) should be prepared to accept and ignore these
   entries. */
#define INTERNALLOG 0
#define XBEGIN 1
#define XCOMMIT 2
#define XABORT 3
#define UPDATELOG 4
/**
    XEND is used for after the pages touched by a transaction have
    been flushed to stable storage.

    @todo Actually write XEND entries to the log so that we can
    use analysis to optimize redo.
*/
#define XEND 6
#define CLRLOG 7

#define XPREPARE 8

/* Page types */
#define UNKNOWN_TYPE_PAGE (-1)
#define UNINITIALIZED_PAGE  0
#define SLOTTED_PAGE        1
#define INDIRECT_PAGE       2
#define LLADD_HEADER_PAGE   3
#define LLADD_FREE_PAGE     4
#define FIXED_PAGE          5
#define ARRAY_LIST_PAGE     6
#define BOUNDARY_TAG_PAGE   7
#define BLOB_PAGE           8
#define LSM_ROOT_PAGE       9
#define SLOTTED_LSN_FREE_PAGE 10
#define SEGMENT_PAGE 11
#define MULTI_PAGE 12 // Not really a page type, but used to denote operations that touch many pages.
#define SLOTTED_LATCH_FREE_PAGE 13
#define USER_DEFINED_PAGE(n) (100+n)  // 0 <= n < 155
#define MAX_PAGE_TYPE       255

#define REGION_FIRST_TAG   1
#define TALLOC_REGION_SIZE 100  // Pages

#define FILE_PERM (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)
//#define LOG_MODE  (O_CREAT | O_RDWR | O_SYNC)

#define MAX_LSM_COMPARATORS 16
#define MAX_LSM_PAGE_INITIALIZERS 256
#define MAX_LSM_PAGE_ALLOCATORS 16

#define MAX_ITERATOR_TYPES 20
#define LINEAR_HASH_NTA_ITERATOR 0
#define ARRAY_ITERATOR           1
#define LOG_MEMORY_ITERATOR      2
#define POINTER_ITERATOR         3
#define STASIS_LOG_STRUCTURED_GROUP_ITERATOR 4

#define USER_DEFINED_ITERATOR 10

#define BYTE_ARRAY_COMPARATOR 1

#define MAX_COMPARATOR 10


#endif