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bbfd7edae5
Until now __attribute__() was defined to be empty for all compilers but gcc. That's problematic because it prevents using it in other compilers; which is necessary e.g. for atomics portability. It's also just generally dubious to do so in a header as widely included as c.h. Instead add pg_attribute_format_arg, pg_attribute_printf, pg_attribute_noreturn macros which are implemented in the compilers that understand them. Also add pg_attribute_noreturn and pg_attribute_packed, but don't provide fallbacks, since they can affect functionality. This means that external code that, possibly unwittingly, relied on __attribute__ defined to be empty on !gcc compilers may now run into warnings or errors on those compilers. But there shouldn't be many occurances of that and it's hard to work around... Discussion: 54B58BA3.8040302@ohmu.fi Author: Oskari Saarenmaa, with some minor changes by me.
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/*-------------------------------------------------------------------------
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*
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* bgwriter.h
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* Exports from postmaster/bgwriter.c and postmaster/checkpointer.c.
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*
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* The bgwriter process used to handle checkpointing duties too. Now
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* there is a separate process, but we did not bother to split this header.
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*
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* Portions Copyright (c) 1996-2015, PostgreSQL Global Development Group
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*
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* src/include/postmaster/bgwriter.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef _BGWRITER_H
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#define _BGWRITER_H
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#include "storage/block.h"
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#include "storage/relfilenode.h"
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/* GUC options */
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extern int BgWriterDelay;
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extern int CheckPointTimeout;
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extern int CheckPointWarning;
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extern double CheckPointCompletionTarget;
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extern void BackgroundWriterMain(void) pg_attribute_noreturn;
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extern void CheckpointerMain(void) pg_attribute_noreturn;
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extern void RequestCheckpoint(int flags);
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extern void CheckpointWriteDelay(int flags, double progress);
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extern bool ForwardFsyncRequest(RelFileNode rnode, ForkNumber forknum,
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BlockNumber segno);
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extern void AbsorbFsyncRequests(void);
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extern Size CheckpointerShmemSize(void);
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extern void CheckpointerShmemInit(void);
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extern bool FirstCallSinceLastCheckpoint(void);
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#endif /* _BGWRITER_H */
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