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* sigproc.cc (sig_hold): Delete.

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(sigheld): Delete.
(sig_send): Eliminate special-case __SIGHOLD handling.
(wait_sig): Just flag when signals are on hold and add them to the queue rather
than stalling the wait_sig loop.  Clear the flag when __SIGNOHOLD is specified.
This commit is contained in:
Christopher Faylor
2013-05-16 05:36:15 +00:00
parent 58854fc721
commit dae40103a5
2 changed files with 39 additions and 51 deletions
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9
winsup/cygwin/ChangeLog
View File

@@ -1,3 +1,12 @@
2013-05-16 Christopher Faylor <me.cygwin2013@cgf.cx>
* sigproc.cc (sig_hold): Delete.
(sigheld): Delete.
(sig_send): Eliminate special-case __SIGHOLD handling.
(wait_sig): Just flag when signals are on hold and add them to the
queue rather than stalling the wait_sig loop. Clear the flag when
__SIGNOHOLD is specified.
2013-05-14 Corinna Vinschen <corinna@vinschen.de>
* Makefile.in (devices_CFLAGS): Drop -Os.

81
winsup/cygwin/sigproc.cc
View File

@@ -44,8 +44,6 @@ char NO_COPY myself_nowait_dummy[1] = {'0'};// Flag to sig_send that signal goes
#define Static static NO_COPY
Static HANDLE sig_hold; // Used to stop signal processing
Static bool sigheld; // True if holding signals
Static int nprocs; // Number of deceased children
Static char cprocs[(NPROCS + 1) * sizeof (pinfo)];// All my children info
@@ -478,24 +476,6 @@ exit_thread (DWORD res)
int __reg3
sig_send (_pinfo *p, int sig, _cygtls *tid)
{
if (sig == __SIGHOLD)
sigheld = true;
else if (!sigheld)
/* nothing */;
else if (sig == __SIGFLUSH || sig == __SIGFLUSHFAST)
return 0;
else if (sig == __SIGNOHOLD)
{
SetEvent (sig_hold);
sigheld = false;
}
else if (&_my_tls == _main_tls)
{
#ifdef DEBUGGING
system_printf ("signal %d sent to %p while signals are on hold", sig, p);
#endif
return -1;
}
siginfo_t si = {};
si.si_signo = sig;
si.si_code = SI_KERNEL;
@@ -1226,7 +1206,7 @@ static void WINAPI
wait_sig (VOID *)
{
_sig_tls = &_my_tls;
sig_hold = CreateEvent (&sec_none_nih, FALSE, FALSE, NULL);
bool sig_held = false;
sigproc_printf ("entering ReadFile loop, my_readsig %p, my_sendsig %p",
my_readsig, my_sendsig);
@@ -1275,33 +1255,7 @@ wait_sig (VOID *)
*pack.mask |= bit;
break;
case __SIGHOLD:
goto loop;
break;
default:
if (pack.si.si_signo < 0)
sig_clear (-pack.si.si_signo);
else
sigq.add (pack);
case __SIGNOHOLD:
case __SIGFLUSH:
case __SIGFLUSHFAST:
{
sigpacket *qnext;
/* Check the queue for signals. There will always be at least one
thing on the queue if this was a valid signal. */
while ((qnext = q->next))
{
if (qnext->si.si_signo && qnext->process () <= 0)
q = q->next;
else
{
q->next = qnext->next;
qnext->si.si_signo = 0;
}
}
if (pack.si.si_signo == SIGCHLD)
clearwait = true;
}
sig_held = true;
break;
case __SIGSETPGRP:
init_console_handler (true);
@@ -1328,16 +1282,41 @@ wait_sig (VOID *)
}
}
break;
default:
if (pack.si.si_signo < 0)
sig_clear (-pack.si.si_signo);
else
sigq.add (pack);
case __SIGNOHOLD:
sig_held = false;
case __SIGFLUSH:
case __SIGFLUSHFAST:
if (!sig_held)
{
sigpacket *qnext;
/* Check the queue for signals. There will always be at least one
thing on the queue if this was a valid signal. */
while ((qnext = q->next))
{
if (qnext->si.si_signo && qnext->process () <= 0)
q = q->next;
else
{
q->next = qnext->next;
qnext->si.si_signo = 0;
}
}
if (pack.si.si_signo == SIGCHLD)
clearwait = true;
}
break;
}
if (clearwait && !have_execed)
proc_subproc (PROC_CLEARWAIT, 0);
loop:
if (pack.wakeup)
{
sigproc_printf ("signalling pack.wakeup %p", pack.wakeup);
SetEvent (pack.wakeup);
}
if (pack.si.si_signo == __SIGHOLD)
WaitForSingleObject (sig_hold, INFINITE);
}
}