diff options
Diffstat (limited to 'src/port/pqsignal.c')
| -rw-r--r-- | src/port/pqsignal.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/src/port/pqsignal.c b/src/port/pqsignal.c index e5a73f22748..07797f909aa 100644 --- a/src/port/pqsignal.c +++ b/src/port/pqsignal.c @@ -32,7 +32,7 @@ #if !defined(WIN32) || defined(FRONTEND) /* - * Set up a signal handler for signal "signo" + * Set up a signal handler, with SA_RESTART, for signal "signo" * * Returns the previous handler. */ @@ -58,4 +58,33 @@ pqsignal(int signo, pqsigfunc func) #endif } +/* + * Set up a signal handler, without SA_RESTART, for signal "signo" + * + * Returns the previous handler. + * + * On Windows, this would be identical to pqsignal(), so don't bother. + */ +#ifndef WIN32 + +pqsigfunc +pqsignal_no_restart(int signo, pqsigfunc func) +{ + struct sigaction act, + oact; + + act.sa_handler = func; + sigemptyset(&act.sa_mask); + act.sa_flags = 0; +#ifdef SA_NOCLDSTOP + if (signo == SIGCHLD) + act.sa_flags |= SA_NOCLDSTOP; +#endif + if (sigaction(signo, &act, &oact) < 0) + return SIG_ERR; + return oact.sa_handler; +} + +#endif /* !WIN32 */ + #endif /* !defined(WIN32) || defined(FRONTEND) */ |