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mdbx: парковка читающих транзакций.

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Леонид Юрьев (Leonid Yuriev)
2024-07-09 16:04:01 +03:00
parent f335a16c92
commit ec0ada7b8c
11 changed files with 399 additions and 80 deletions
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8
src/layout-lck.h
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@@ -8,7 +8,7 @@
#include "essentials.h"
/* The version number for a database's lockfile format. */
#define MDBX_LOCK_VERSION 5
#define MDBX_LOCK_VERSION 6
#if MDBX_LOCKING == MDBX_LOCKING_WIN32FILES
@@ -159,6 +159,12 @@ typedef struct reader_slot {
* We simply re-init the table when we know that we're the only process
* opening the lock file. */
/* Псевдо thread_id для пометки вытесненных читающих транзакций. */
#define MDBX_TID_TXN_OUSTED (UINT64_MAX - 1)
/* Псевдо thread_id для пометки припаркованных читающих транзакций. */
#define MDBX_TID_TXN_PARKED UINT64_MAX
/* The thread ID of the thread owning this txn. */
mdbx_atomic_uint64_t tid;