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* sigproc.cc (sigproc_init): Set aside more buffer space for signal pipes. 

(sig_send): Retry WriteFiles which fail when there is no error but packbytes
have not been sent.
This commit is contained in:
Christopher Faylor 2014-07-15 22:11:23 +00:00
parent 0db2f28fd6
commit 6f05b32767
2 changed files with 21 additions and 2 deletions
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7
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,10 @@
2014-07-15 Christopher Faylor <me.cygwin2014@cgf.cx>
* sigproc.cc (sigproc_init): Set aside more buffer space for signal
pipes.
(sig_send): Retry WriteFiles which fail when there is no error but
packbytes have not been sent.
2014-07-15 Christopher Faylor <me.cygwin2014@cgf.cx>
* sigproc.cc (send_sig): Don't report an error if WriteFile succeeds.

16
winsup/cygwin/sigproc.cc
View File

@ -426,7 +426,7 @@ sigproc_init ()
char char_sa_buf[1024];
PSECURITY_ATTRIBUTES sa = sec_user_nih ((PSECURITY_ATTRIBUTES) char_sa_buf, cygheap->user.sid());
DWORD err = fhandler_pipe::create (sa, &my_readsig, &my_sendsig,
sizeof (sigpacket), "sigwait",
NSIG * sizeof (sigpacket), "sigwait",
PIPE_ADD_PID);
if (err)
{
@ -635,7 +635,19 @@ sig_send (_pinfo *p, siginfo_t& si, _cygtls *tls)
}
DWORD nb;
if (!WriteFile (sendsig, leader, packsize, &nb, NULL))
BOOL res;
/* Try multiple times to send if packsize != nb since that probably
means that the pipe buffer is full. */
for (int i = 0; i < 100; i++)
{
res = WriteFile (sendsig, leader, packsize, &nb, NULL);
if (!res || packsize == nb)
break;
Sleep (10);
res = 0;
}
if (!res)
{
/* Couldn't send to the pipe. This probably means that the
process is exiting. */