From: Houder <houder@xs4all.nl>
To: cygwin@cygwin.com
Subject: Re: REVISITED: Signal delivered while blocked
Date: Sun, 20 Aug 2017 12:59:00 -0000 [thread overview]
Message-ID: <46d2983f263cb1be122ad1c8f239c88c@smtp-cloud7.xs4all.net> (raw)
In-Reply-To: <c05c742f0f3809e6d1afb8fb2c646ad7@xs4all.nl>
On Wed, 16 Aug 2017 23:22:31, Houder wrote:
>
> Hi,
>
> Please read this post first:
>
> https://cygwin.com/ml/cygwin/2017-08/msg00048.html
> ( Signal delivered while blocked -- by Noah Misch, August 4th 2017 )
>
> This post is not intended to "hijack" the post by Noah Misch; this post
> only ships an alternative (i.e. revised) testcase for the one by provided
> by Noah Misch.
>
> The alternative testcase in fact consists of 2 testcases (2 files):
>
> 1. sigprocmask-exclusion4.c
> 2. sigprocmask-exclusion5.c
Only for those interested ...
I made a minor modification to the 2nd testcase (sigprocmask-exclusion5.c) (in
order to get it theoretically correct).
I modified the last part (bottom) of each handler. See below.
On request, I will upload the files again.
Regards,
Henri
-----
handler(): // old
#if defined(option1)
if (sigprocmask(SIG_SETMASK, &oset, NULL) != 0) // herstel
perror("sigprocmask");
#else
r = sigdelset(&set, SIGCHLD);
if (r != 0) puts("retvalH1b");
if (sigprocmask(SIG_UNBLOCK, &set, NULL) != 0) // verwijder
perror("sigprocmask");
// Cygwin: aborts, almost immediately
#endif
}
handler(): // new
#if defined(option1)
if (sigprocmask(SIG_SETMASK, &oset, NULL) != 0) // herstel
perror("sigprocmask");
#else
{
int rv = 0;
if ( (rv = sigismember(&oset, SIGCHLD)) == -1)
perror("sigismember");
// if the other signal was enabled at the beginning, enable it again
if (rv == 0) {
if (sigprocmask(SIG_UNBLOCK, &set, NULL) != 0) // verwijder
perror("sigprocmask");
}
}
#endif
}
-----
handler2(): // old
#if defined(option1)
if (sigprocmask(SIG_SETMASK, &oset, NULL) != 0) // herstel
perror("sigprocmask");
#else
r = sigdelset(&set, SIGUSR1);
if (r != 0) puts("retvalH2b");
if (sigprocmask(SIG_UNBLOCK, &set, NULL) != 0) // verwijder
perror("sigprocmask");
#endif
}
handler2(): // new
#if defined(option1)
if (sigprocmask(SIG_SETMASK, &oset, NULL) != 0) // herstel
perror("sigprocmask");
#else
{
int rv = 0;
if ( (rv = sigismember(&oset, SIGUSR1)) == -1)
perror("sigismember");
// if the other signal was enabled at the beginning, enable it again
if (rv == 0) {
if (sigprocmask(SIG_UNBLOCK, &set, NULL) != 0) // verwijder
perror("sigprocmask");
}
}
#endif
}
=====
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next prev parent reply other threads:[~2017-08-20 12:59 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-16 21:22 Houder
2017-08-18 16:20 ` Corinna Vinschen
2017-08-20 13:20 ` Houder
2017-08-20 12:59 ` Houder [this message]
2017-08-20 15:44 ` Kaz Kylheku
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