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mdbx: переделка отслеживания mlocks для игнорирования EINVAL от madvise().

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Леонид Юрьев (Leonid Yuriev)
2022-11-04 19:43:48 +03:00
parent 9cbd4e63ca
commit 47e7a646fd
2 changed files with 73 additions and 61 deletions
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10
src/internals.h
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@@ -731,10 +731,10 @@ typedef struct MDBX_lockinfo {
/* Marker to distinguish uniqueness of DB/CLK. */
MDBX_atomic_uint64_t mti_bait_uniqueness;
/* Counter of processes which had mlock()'ed some of mmapped DB pages.
* Non-zero means at least one process lock at leat one page,
* and therefore madvise() could return EINVAL. */
MDBX_atomic_uint32_t mti_mlock_counter;
/* Paired counter of processes that have mlock()ed part of mmapped DB.
* The (mti_mlcnt[0] - mti_mlcnt[1]) > 0 means at least one process
* lock at leat one page, so therefore madvise() could return EINVAL. */
MDBX_atomic_uint32_t mti_mlcnt[2];
MDBX_ALIGNAS(MDBX_CACHELINE_SIZE) /* cacheline ----------------------------*/
@@ -764,7 +764,7 @@ typedef struct MDBX_lockinfo {
/* Timestamp of the last readers check. */
MDBX_atomic_uint64_t mti_reader_check_timestamp;
/* Number of page which was discarded last time by madvise(MADV_FREE). */
/* Number of page which was discarded last time by madvise(DONTNEED). */
atomic_pgno_t mti_discarded_tail;
/* Shared anchor for tracking readahead edge and enabled/disabled status. */