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0d79c0a8cc
These changes should generally improve correctness/maintainability. A nice side benefit is that several kilobytes move from initialized data to text segment, allowing them to be shared across processes and probably reducing copy-on-write overhead while forking a new backend. Unfortunately this doesn't seem to help libpq in the same way (at least not when it's compiled with -fpic on x86_64), but we can hope the linker at least collects all nominally-const data together even if it's not actually part of the text segment. Also, make pg_encname_tbl[] static in encnames.c, since there seems no very good reason for any other code to use it; per a suggestion from Wim Lewis, who independently submitted a patch that was mostly a subset of this one. Oskari Saarenmaa, with some editorialization by me
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/*-------------------------------------------------------------------------
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*
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* relpath.h
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* Declarations for relpath() and friends
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*
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* Portions Copyright (c) 1996-2014, 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/common/relpath.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef RELPATH_H
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#define RELPATH_H
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/*
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* 'pgrminclude ignore' needed here because CppAsString2() does not throw
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* an error if the symbol is not defined.
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*/
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#include "catalog/catversion.h" /* pgrminclude ignore */
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#include "storage/relfilenode.h"
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#define OIDCHARS 10 /* max chars printed by %u */
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#define TABLESPACE_VERSION_DIRECTORY "PG_" PG_MAJORVERSION "_" \
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CppAsString2(CATALOG_VERSION_NO)
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extern const char *const forkNames[];
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extern int forkname_chars(const char *str, ForkNumber *fork);
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extern char *relpathbackend(RelFileNode rnode, BackendId backend,
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ForkNumber forknum);
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/* First argument is a RelFileNodeBackend */
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#define relpath(rnode, forknum) \
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relpathbackend((rnode).node, (rnode).backend, (forknum))
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/* First argument is a RelFileNode */
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#define relpathperm(rnode, forknum) \
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relpathbackend((rnode), InvalidBackendId, (forknum))
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#endif /* RELPATH_H */
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