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c7b8998ebb
Change pg_bsd_indent to follow upstream rules for placement of comments
to the right of code, and remove pgindent hack that caused comments
following #endif to not obey the general rule.
Commit e3860ffa4d wasn't actually using
the published version of pg_bsd_indent, but a hacked-up version that
tried to minimize the amount of movement of comments to the right of
code. The situation of interest is where such a comment has to be
moved to the right of its default placement at column 33 because there's
code there. BSD indent has always moved right in units of tab stops
in such cases --- but in the previous incarnation, indent was working
in 8-space tab stops, while now it knows we use 4-space tabs. So the
net result is that in about half the cases, such comments are placed
one tab stop left of before. This is better all around: it leaves
more room on the line for comment text, and it means that in such
cases the comment uniformly starts at the next 4-space tab stop after
the code, rather than sometimes one and sometimes two tabs after.
Also, ensure that comments following #endif are indented the same
as comments following other preprocessor commands such as #else.
That inconsistency turns out to have been self-inflicted damage
from a poorly-thought-through post-indent "fixup" in pgindent.
This patch is much less interesting than the first round of indent
changes, but also bulkier, so I thought it best to separate the effects.
Discussion: https://postgr.es/m/E1dAmxK-0006EE-1r@gemulon.postgresql.org
Discussion: https://postgr.es/m/30527.1495162840@sss.pgh.pa.us
49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* mem.h
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* portability definitions for various memory operations
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*
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* Copyright (c) 2001-2017, PostgreSQL Global Development Group
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*
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* src/include/portability/mem.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef MEM_H
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#define MEM_H
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#define IPCProtection (0600) /* access/modify by user only */
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#ifdef SHM_SHARE_MMU /* use intimate shared memory on Solaris */
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#define PG_SHMAT_FLAGS SHM_SHARE_MMU
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#else
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#define PG_SHMAT_FLAGS 0
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#endif
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/* Linux prefers MAP_ANONYMOUS, but the flag is called MAP_ANON on other systems. */
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#ifndef MAP_ANONYMOUS
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#define MAP_ANONYMOUS MAP_ANON
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#endif
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/* BSD-derived systems have MAP_HASSEMAPHORE, but it's not present (or needed) on Linux. */
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#ifndef MAP_HASSEMAPHORE
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#define MAP_HASSEMAPHORE 0
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#endif
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/*
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* BSD-derived systems use the MAP_NOSYNC flag to prevent dirty mmap(2)
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* pages from being gratuitously flushed to disk.
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*/
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#ifndef MAP_NOSYNC
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#define MAP_NOSYNC 0
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#endif
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#define PG_MMAP_FLAGS (MAP_SHARED|MAP_ANONYMOUS|MAP_HASSEMAPHORE)
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/* Some really old systems don't define MAP_FAILED. */
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#ifndef MAP_FAILED
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#define MAP_FAILED ((void *) -1)
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#endif
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#endif /* MEM_H */
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