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fix a race between ev_async and ev_signal

This commit is contained in:
Marc Alexander Lehmann 2008-02-19 19:21:20 +00:00
parent 0f428d452b
commit 8484be105d
1 changed files with 7 additions and 9 deletions
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16
ev.c
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@ -817,17 +817,15 @@ evpipe_init (EV_P)
}
void inline_size
evpipe_write (EV_P_ int sig, int async)
evpipe_write (EV_P_ EV_ATOMIC_T *flag)
{
int sent = gotasync || gotsig;
if (sig) gotsig = 1;
if (async) gotasync = 1;
if (!sent)
if (!*flag)
{
int old_errno = errno; /* save errno becaue write might clobber it */
*flag = 1;
write (evpipe [1], &old_errno, 1);
errno = old_errno;
}
}
@ -880,7 +878,7 @@ sighandler (int signum)
#endif
signals [signum - 1].gotsig = 1;
evpipe_write (EV_A_ 1, 0);
evpipe_write (EV_A_ &gotsig);
}
void noinline
@ -2470,7 +2468,7 @@ void
ev_async_send (EV_P_ ev_async *w)
{
w->sent = 1;
evpipe_write (EV_A_ 0, 1);
evpipe_write (EV_A_ &gotasync);
}
#endif