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mdbx: refine pgno-lists.

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Change-Id: Id38e4aff508437210d4c0e63962067dfe518eb31
This commit is contained in:
Leo Yuriev 2017-07-26 09:31:22 +03:00
parent 592c064873
commit 552b759878
3 changed files with 312 additions and 295 deletions
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42
src/bits.h
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@ -434,11 +434,11 @@ typedef struct MDBX_lockinfo {
/*----------------------------------------------------------------------------*/
/* Two kind lists of pages (aka IDL) */
/* An IDL is an ID List, a sorted array of IDs. The first
/* An PNL is an Page Number List, a sorted array of IDs. The first
* element of the array is a counter for how many actual
* IDs are in the list. In the libmdbx IDLs are sorted in
* IDs are in the list. In the libmdbx PNLs are sorted in
* descending order. */
typedef pgno_t *MDBX_IDL;
typedef pgno_t *MDBX_PNL;
/* List of txnid, only for MDBX_env.mt_lifo_reclaimed */
typedef txnid_t *MDBX_TXL;
@ -455,23 +455,23 @@ typedef struct MDBX_ID2 {
* unused. The array is sorted in ascending order by mid. */
typedef MDBX_ID2 *MDBX_ID2L;
/* IDL sizes - likely should be even bigger
/* PNL sizes - likely should be even bigger
* limiting factors: sizeof(pgno_t), thread stack size */
#define MDBX_IDL_LOGN 16 /* DB_SIZE is 2^16, UM_SIZE is 2^17 */
#define MDBX_IDL_DB_SIZE (1 << MDBX_IDL_LOGN)
#define MDBX_IDL_UM_SIZE (1 << (MDBX_IDL_LOGN + 1))
#define MDBX_PNL_LOGN 16 /* DB_SIZE is 2^16, UM_SIZE is 2^17 */
#define MDBX_PNL_DB_SIZE (1 << MDBX_PNL_LOGN)
#define MDBX_PNL_UM_SIZE (1 << (MDBX_PNL_LOGN + 1))
#define MDBX_IDL_DB_MAX (MDBX_IDL_DB_SIZE - 1)
#define MDBX_IDL_UM_MAX (MDBX_IDL_UM_SIZE - 1)
#define MDBX_PNL_DB_MAX (MDBX_PNL_DB_SIZE - 1)
#define MDBX_PNL_UM_MAX (MDBX_PNL_UM_SIZE - 1)
#define MDBX_IDL_SIZEOF(ids) (((ids)[0] + 1) * sizeof(pgno_t))
#define MDBX_IDL_IS_ZERO(ids) ((ids)[0] == 0)
#define MDBX_IDL_CPY(dst, src) (memcpy(dst, src, MDBX_IDL_SIZEOF(src)))
#define MDBX_IDL_FIRST(ids) ((ids)[1])
#define MDBX_IDL_LAST(ids) ((ids)[(ids)[0]])
#define MDBX_PNL_SIZEOF(pl) (((pl)[0] + 1) * sizeof(pgno_t))
#define MDBX_PNL_IS_ZERO(pl) ((pl)[0] == 0)
#define MDBX_PNL_CPY(dst, src) (memcpy(dst, src, MDBX_PNL_SIZEOF(src)))
#define MDBX_PNL_FIRST(pl) ((pl)[1])
#define MDBX_PNL_LAST(pl) ((pl)[(pl)[0]])
/* Current max length of an mdbx_midl_alloc()ed IDL */
#define MDBX_IDL_ALLOCLEN(ids) ((ids)[-1])
/* Current max length of an mdbx_pnl_alloc()ed PNL */
#define MDBX_PNL_ALLOCLEN(pl) ((pl)[-1])
/*----------------------------------------------------------------------------*/
/* Internal structures */
@ -503,7 +503,7 @@ struct MDBX_txn {
/* The list of reclaimed txns from freeDB */
MDBX_TXL mt_lifo_reclaimed;
/* The list of pages that became unused during this transaction. */
MDBX_IDL mt_befree_pages;
MDBX_PNL mt_befree_pages;
/* The list of loose pages that became unused and may be reused
* in this transaction, linked through NEXT_LOOSE_PAGE(page). */
MDBX_page *mt_loose_pages;
@ -512,7 +512,7 @@ struct MDBX_txn {
/* The sorted list of dirty pages we temporarily wrote to disk
* because the dirty list was full. page numbers in here are
* shifted left by 1, deleted slots have the LSB set. */
MDBX_IDL mt_spill_pages;
MDBX_PNL mt_spill_pages;
union {
/* For write txns: Modified pages. Sorted when not MDBX_WRITEMAP. */
MDBX_ID2L mt_rw_dirtylist;
@ -699,9 +699,9 @@ struct MDBX_env {
#define me_last_reclaimed me_pgstate.mf_last_reclaimed
#define me_reclaimed_pglist me_pgstate.mf_reclaimed_pglist
MDBX_page *me_dpages; /* list of malloc'd blocks for re-use */
/* IDL of pages that became unused in a write txn */
MDBX_IDL me_free_pgs;
/* ID2L of pages written during a write txn. Length MDBX_IDL_UM_SIZE. */
/* PNL of pages that became unused in a write txn */
MDBX_PNL me_free_pgs;
/* ID2L of pages written during a write txn. Length MDBX_PNL_UM_SIZE. */
MDBX_ID2L me_dirtylist;
/* Max number of freelist items that can fit in a single overflow page */
unsigned me_maxfree_1pg;

561
src/mdbx.c
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File diff suppressed because it is too large Load Diff

4
src/tools/mdbx_chk.c
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@ -1,4 +1,4 @@
/* mdbx_chk.c - memory-mapped database check tool */
/* mdbx_chk.c - memory-mapped database check tool */
/*
* Copyright 2015-2017 Leonid Yuriev <leo@yuriev.ru>
@ -343,7 +343,7 @@ static int handle_freedb(const uint64_t record_number, const MDBX_val *key,
data->iov_len);
else {
number = *iptr++;
if (number >= MDBX_IDL_UM_MAX)
if (number >= MDBX_PNL_UM_MAX)
problem_add("entry", record_number, "wrong idl length", "%" PRIiPTR "",
number);
else if ((number + 1) * sizeof(pgno_t) != data->iov_len)