38 lines
1.0 KiB
C
38 lines
1.0 KiB
C
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/*-------------------------------------------------------------------------
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*
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* sharedfileset.h
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* Shared temporary file management.
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*
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*
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* Portions Copyright (c) 1996-2023, 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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* src/include/storage/sharedfileset.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef SHAREDFILESET_H
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#define SHAREDFILESET_H
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#include "storage/dsm.h"
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#include "storage/fd.h"
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#include "storage/fileset.h"
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#include "storage/spin.h"
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/*
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* A set of temporary files that can be shared by multiple backends.
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*/
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typedef struct SharedFileSet
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{
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FileSet fs;
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slock_t mutex; /* mutex protecting the reference count */
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int refcnt; /* number of attached backends */
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} SharedFileSet;
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extern void SharedFileSetInit(SharedFileSet *fileset, dsm_segment *seg);
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extern void SharedFileSetAttach(SharedFileSet *fileset, dsm_segment *seg);
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extern void SharedFileSetDeleteAll(SharedFileSet *fileset);
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#endif
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