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## Problem See https://neondb.slack.com/archives/C08PJ07BZ44/p1746566292750689 Looks like there are more cases when `prefetch_pump_state` can be called in unexpected place and cause core dump. ## Summary of changes Add more guards. --------- Co-authored-by: Konstantin Knizhnik <knizhnik@neon.tech>
51 lines
1.9 KiB
C
51 lines
1.9 KiB
C
/*-------------------------------------------------------------------------
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*
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* communicator.h
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* internal interface for communicating with remote pageservers
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*
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*
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* Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef COMMUNICATOR_h
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#define COMMUNICATOR_h
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#include "neon_pgversioncompat.h"
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#include "storage/buf_internals.h"
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#include "pagestore_client.h"
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/* initialization at postmaster startup */
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extern void pg_init_communicator(void);
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/* initialization at backend startup */
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extern void communicator_init(void);
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extern bool communicator_exists(NRelFileInfo rinfo, ForkNumber forkNum,
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neon_request_lsns *request_lsns);
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extern BlockNumber communicator_nblocks(NRelFileInfo rinfo, ForkNumber forknum,
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neon_request_lsns *request_lsns);
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extern int64 communicator_dbsize(Oid dbNode, neon_request_lsns *request_lsns);
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extern void communicator_read_at_lsnv(NRelFileInfo rinfo, ForkNumber forkNum,
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BlockNumber base_blockno, neon_request_lsns *request_lsns,
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void **buffers, BlockNumber nblocks, const bits8 *mask);
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extern int communicator_prefetch_lookupv(NRelFileInfo rinfo, ForkNumber forknum, BlockNumber blocknum,
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neon_request_lsns *lsns,
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BlockNumber nblocks, void **buffers, bits8 *mask);
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extern void communicator_prefetch_register_bufferv(BufferTag tag, neon_request_lsns *frlsns,
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BlockNumber nblocks, const bits8 *mask);
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extern bool communicator_prefetch_receive(BufferTag tag);
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extern int communicator_read_slru_segment(SlruKind kind, int64 segno,
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neon_request_lsns *request_lsns,
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void *buffer);
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extern void communicator_reconfigure_timeout_if_needed(void);
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extern void communicator_prefetch_pump_state(void);
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#endif
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