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cc92cca431
It appears that all platforms that have sys_siglist[] also have strsignal(), making that fallback case in pg_strsignal() dead code. Getting rid of it allows dropping a configure test, which seems worth more than providing textual signal descriptions on whatever platforms might still hypothetically have use for the fallback case. Discussion: https://postgr.es/m/25758.1544983503@sss.pgh.pa.us
65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/*-------------------------------------------------------------------------
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*
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* pgstrsignal.c
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* Identify a Unix signal number
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*
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* On platforms compliant with modern POSIX, this just wraps strsignal(3).
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* Elsewhere, we do the best we can.
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*
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* This file is not currently built in MSVC builds, since it's useless
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* on non-Unix platforms.
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*
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* Portions Copyright (c) 1996-2018, 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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* IDENTIFICATION
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* src/port/pgstrsignal.c
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*
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*-------------------------------------------------------------------------
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*/
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#include "c.h"
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/*
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* pg_strsignal
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*
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* Return a string identifying the given Unix signal number.
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*
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* The result is declared "const char *" because callers should not
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* modify the string. Note, however, that POSIX does not promise that
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* the string will remain valid across later calls to strsignal().
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*
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* This version guarantees to return a non-NULL pointer, although
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* some platforms' versions of strsignal() reputedly do not.
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*/
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const char *
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pg_strsignal(int signum)
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{
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const char *result;
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/*
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* If we have strsignal(3), use that --- but check its result for NULL.
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*/
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#ifdef HAVE_STRSIGNAL
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result = strsignal(signum);
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if (result)
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return result;
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#else
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/*
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* We used to have code here to try to use sys_siglist[] if available.
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* However, it seems that all platforms with sys_siglist[] have also had
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* strsignal() for many years now, so that was just a waste of code.
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*/
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#endif
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/*
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* Fallback case: just return "unrecognized signal". Project style is for
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* callers to print the numeric signal value along with the result of this
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* function, so there's no need to work harder than this.
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*/
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result = "unrecognized signal";
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return result;
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}
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