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体验新版 GitCode,发现更多精彩内容 >>
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b55d49f5
编写于
11月 18, 1996
作者:
B
Bryan Henderson
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差异文件
Add comments about the diversity of signal functionality. Came from
Makefile.global.
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src/backend/libpq/pqsignal.c
src/backend/libpq/pqsignal.c
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src/backend/libpq/pqsignal.c
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b55d49f5
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@@ -8,14 +8,35 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/libpq/pqsignal.c,v 1.
3 1996/11/06 08:48:32 scrappy
Exp $
* $Header: /cvsroot/pgsql/src/backend/libpq/pqsignal.c,v 1.
4 1996/11/18 02:25:09 bryanh
Exp $
*
* NOTES
* This shouldn't be in libpq, but the monitor and some other
* things need it...
*
*-------------------------------------------------------------------------
*/
* A NOTE ABOUT SIGNAL HANDLING ACROSS THE VARIOUS PLATFORMS.
*
* config.h defines the macro USE_POSIX_SIGNALS for some platforms and
* not for others. This file and pqsignal.h use that macro to decide
* how to handle signalling.
*
* signal(2) handling - this is here because it affects some of
* the frontend commands as well as the backend server.
*
* Ultrix and SunOS provide BSD signal(2) semantics by default.
*
* SVID2 and POSIX signal(2) semantics differ from BSD signal(2)
* semantics. We can use the POSIX sigaction(2) on systems that
* allow us to request restartable signals (SA_RESTART).
*
* Some systems don't allow restartable signals at all unless we
* link to a special BSD library.
*
* We devoutly hope that there aren't any systems that provide
* neither POSIX signals nor BSD signals. The alternative
* is to do signal-handler reinstallation, which doesn't work well
* at all.
* ------------------------------------------------------------------------*/
#include <postgres.h>
#include <libpq/pqsignal.h>
...
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