diff options
| -rw-r--r-- | src/backend/access/transam/slru.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/backend/access/transam/slru.c b/src/backend/access/transam/slru.c index 93ec653dd60..d037c369a72 100644 --- a/src/backend/access/transam/slru.c +++ b/src/backend/access/transam/slru.c @@ -205,15 +205,16 @@ SimpleLruInit(SlruCtl ctl, const char *name, int nslots, int nlsns, shared->page_lru_count = (int *) (ptr + offset); offset += MAXALIGN(nslots * sizeof(int)); + /* Initialize LWLocks */ + shared->buffer_locks = (LWLockPadded *) (ptr + offset); + offset += MAXALIGN(nslots * sizeof(LWLockPadded)); + if (nlsns > 0) { shared->group_lsn = (XLogRecPtr *) (ptr + offset); offset += MAXALIGN(nslots * nlsns * sizeof(XLogRecPtr)); } - /* Initialize LWLocks */ - shared->buffer_locks = (LWLockPadded *) ShmemAlloc(sizeof(LWLockPadded) * nslots); - Assert(strlen(name) + 1 < SLRU_MAX_NAME_LENGTH); strlcpy(shared->lwlock_tranche_name, name, SLRU_MAX_NAME_LENGTH); shared->lwlock_tranche_id = tranche_id; @@ -230,6 +231,9 @@ SimpleLruInit(SlruCtl ctl, const char *name, int nslots, int nlsns, shared->page_lru_count[slotno] = 0; ptr += BLCKSZ; } + + /* Should fit to estimated shmem size */ + Assert(ptr - (char *) shared <= SimpleLruShmemSize(nslots, nlsns)); } else Assert(found); |