On 27/08/2013 8:06 AM, Ken Brown wrote:
On 8/27/2013 4:28 AM, Ryan Johnson wrote:
On 17/08/2013 2:41 PM, Ryan Johnson wrote:
Hi all,
The following STC causes emacs-nox to peg a CPU indefinitely. Emacs
remains responsive, but C-c C-k doesn't kill the compile; you have to
exit emacs to remove the "Compiling" status. Killing the buffer or
starting a new compile offers to kill the offending process, but
doesn't.
Attaching gdb shows an endless loop inside
kernelbase.dll!RaiseException, but provides no other clues that I
could see.
1. emacs-nox -Q
2. M-x compile
3. C-a C-k sleep 1; echo hi
4. ^Z (before the sleep finishes)
5. fg (after the sleep finishes)
I don't know if this is related to limited pipe buffering, but I don't
think so: it has always worked in the past, and the the 3-4 bytes
required to buffer up "hi\n" is hardly onerous.
$ uname -a
CYGWIN_NT-6.1 ryan-laptop-v02 1.7.24(0.269/5/3) 2013-08-15 11:59
x86_64 Cygwin
$ cygcheck -cd
bash 4.1.11-1
cygwin 1.7.24-1
emacs 24.3-5
mintty 1.2-beta1-1
> Ping... is anyone else at least able to reproduce this?
I can reproduce this on both x86 and x86_64, even without the "echo
hi". Since gdb doesn't seem to be helping, have you tried strace?
I've attached a snippet of strace output; it is replicated endlessly in
the log file I took, with increasing timestamps being the only
difference AFAICT. The snippet itself in turn consists of a segment that
is repeated three times, where the only meaningful difference is the
value of "set_bits: me"
And when you say this has always worked in the past, are you talking
about earlier versions of emacs or earlier versions of cygwin?
I migrated to 64-bit cygwin and emacs-24 at the same time (from 32-bit
emacs-23), when my old computer's HDD died, so I don't have an easy way
to answer that question. I didn't notice the problem at first, either,
so I don't know if a subsequent update changed things (I doubt it,
though, because I do remember a few times where emacs was hogging CPU
and I didn't quite know what had happened, before I figured out what was
going on).
HTH,
Ryan
27 6594315 [pipesel] emacs 7036 fhandler_pty_master::hit_eof: all other
handles closed
17 6594332 [pipesel] emacs 7036 peek_pipe: read: /dev/ptmx, saw EOF
20 6594352 [main] emacs 7036 select_stuff::wait: wait_ret 2. verifying
16 6594368 [main] emacs 7036 set_bits: me 0x600029280, testing fd 4
(/dev/ptmx)
16 6594384 [main] emacs 7036 set_bits: ready 1
15 6594399 [main] emacs 7036 select_stuff::wait: gotone 1
15 6594414 [main] emacs 7036 select_stuff::wait: returning 0
16 6594430 [main] emacs 7036 select: res 0
15 6594445 [main] emacs 7036 peek_pipe: /dev/ptmx, already ready for read
15 6594460 [main] emacs 7036 set_bits: me 0x600029280, testing fd 4
(/dev/ptmx)
15 6594475 [main] emacs 7036 set_bits: ready 1
30 6594505 [main] emacs 7036 select_stuff::cleanup: calling cleanup routines
93 6594598 [main] emacs 7036 select_stuff::destroy: deleting select records
139 6594737 [main] emacs 7036 select_stuff::cleanup: calling cleanup routines
16 6594753 [main] emacs 7036 select_stuff::destroy: deleting select records
15 6594768 [main] emacs 7036 cygwin_select: 1 = select(5, 0x429B90,
0x429BA0, 0x0, 0x429920)
118 6594886 [main] emacs 7036 fcntl64: fcntl(3, 4, ...)
15 6594901 [main] emacs 7036 fhandler_base::set_flags: flags 0x1C002,
supplied_bin 0x0
16 6594917 [main] emacs 7036 fhandler_base::set_flags: O_TEXT/O_BINARY set
in flags 0x10000
15 6594932 [main] emacs 7036 fhandler_base::set_flags: filemode set to binary
15 6594947 [main] emacs 7036 fcntl64: 0 = fcntl(3, 4, 0x4000)
117 6595064 [main] emacs 7036 read: read(3, 0x428900, 4095) nonblocking
15 6595079 [main] emacs 7036 fhandler_pty_slave::read: read(0x428900, 4095)
handle 0x1B4
19 6595098 [main] emacs 7036 fhandler_pty_slave::read: wait timed out,
time_to_wait 0
15 6595113 [main] emacs 7036 fhandler_pty_slave::read: -1=read(0x428900,
4095)
15 6595128 [main] emacs 7036 read: -1 = read(3, 0x428900, 4095), errno 11
117 6595245 [main] emacs 7036 fcntl64: fcntl(3, 4, ...)
15 6595260 [main] emacs 7036 fhandler_base::set_flags: flags 0x18002,
supplied_bin 0x0
15 6595275 [main] emacs 7036 fhandler_base::set_flags: O_TEXT/O_BINARY set
in flags 0x10000
16 6595291 [main] emacs 7036 fhandler_base::set_flags: filemode set to binary
15 6595306 [main] emacs 7036 fcntl64: 0 = fcntl(3, 4, 0x0)
17 6595323 [main] emacs 7036 read: read(4, 0x4289E0, 4096) nonblocking
22 6595345 [main] emacs 7036 fhandler_pty_master::hit_eof: all other handles
closed
15 6595360 [main] emacs 7036 fhandler_pty_master::process_slave_output:
returning 0
15 6595375 [main] emacs 7036 read: 0 = read(4, 0x4289E0, 4096)
119 6595494 [main] emacs 7036 fcntl64: fcntl(3, 4, ...)
15 6595509 [main] emacs 7036 fhandler_base::set_flags: flags 0x1C002,
supplied_bin 0x0
16 6595525 [main] emacs 7036 fhandler_base::set_flags: O_TEXT/O_BINARY set
in flags 0x10000
15 6595540 [main] emacs 7036 fhandler_base::set_flags: filemode set to binary
15 6595555 [main] emacs 7036 fcntl64: 0 = fcntl(3, 4, 0x4000)
120 6595675 [main] emacs 7036 read: read(3, 0x428940, 4095) nonblocking
16 6595691 [main] emacs 7036 fhandler_pty_slave::read: read(0x428940, 4095)
handle 0x1B4
18 6595709 [main] emacs 7036 fhandler_pty_slave::read: wait timed out,
time_to_wait 0
15 6595724 [main] emacs 7036 fhandler_pty_slave::read: -1=read(0x428940,
4095)
16 6595740 [main] emacs 7036 read: -1 = read(3, 0x428940, 4095), errno 11
116 6595856 [main] emacs 7036 fcntl64: fcntl(3, 4, ...)
15 6595871 [main] emacs 7036 fhandler_base::set_flags: flags 0x18002,
supplied_bin 0x0
15 6595886 [main] emacs 7036 fhandler_base::set_flags: O_TEXT/O_BINARY set
in flags 0x10000
16 6595902 [main] emacs 7036 fhandler_base::set_flags: filemode set to binary
15 6595917 [main] emacs 7036 fcntl64: 0 = fcntl(3, 4, 0x0)
16 6595933 [main] emacs 7036 cygwin_select: select(5, 0x429B90, 0x429BA0,
0x0, 0x429920)
16 6595949 [main] emacs 7036 cygwin_select: to->tv_sec 0, to->tv_usec
487999, ms 487
81 6596030 [main] emacs 7036 dtable::select_read: /dev/tty fd 3
94 6596124 [main] emacs 7036 dtable::select_read: /dev/ptmx fd 4
16 6596140 [main] emacs 7036 select: sel.always_ready 0
41 6596181 [main] emacs 7036 select_stuff::wait: m 4, ms 487
28 6596209 [pipesel] emacs 7036 fhandler_pty_master::hit_eof: all other
handles closed
16 6596225 [pipesel] emacs 7036 peek_pipe: read: /dev/ptmx, saw EOF
29 6596254 [main] emacs 7036 select_stuff::wait: wait_ret 2. verifying
14 6596268 [main] emacs 7036 set_bits: me 0x600029A80, testing fd 4
(/dev/ptmx)
11 6596279 [main] emacs 7036 set_bits: ready 1
12 6596291 [main] emacs 7036 select_stuff::wait: gotone 1
11 6596302 [main] emacs 7036 select_stuff::wait: returning 0
12 6596314 [main] emacs 7036 select: res 0
12 6596326 [main] emacs 7036 peek_pipe: /dev/ptmx, already ready for read
11 6596337 [main] emacs 7036 set_bits: me 0x600029A80, testing fd 4
(/dev/ptmx)
12 6596349 [main] emacs 7036 set_bits: ready 1
22 6596371 [main] emacs 7036 select_stuff::cleanup: calling cleanup routines
66 6596437 [main] emacs 7036 select_stuff::destroy: deleting select records
99 6596536 [main] emacs 7036 select_stuff::cleanup: calling cleanup routines
12 6596548 [main] emacs 7036 select_stuff::destroy: deleting select records
12 6596560 [main] emacs 7036 cygwin_select: 1 = select(5, 0x429B90,
0x429BA0, 0x0, 0x429920)
121 6596681 [main] emacs 7036 fcntl64: fcntl(3, 4, ...)
13 6596694 [main] emacs 7036 fhandler_base::set_flags: flags 0x1C002,
supplied_bin 0x0
12 6596706 [main] emacs 7036 fhandler_base::set_flags: O_TEXT/O_BINARY set
in flags 0x10000
28 6596734 [main] emacs 7036 fhandler_base::set_flags: filemode set to binary
18 6596752 [main] emacs 7036 fcntl64: 0 = fcntl(3, 4, 0x4000)
122 6596874 [main] emacs 7036 read: read(3, 0x428900, 4095) nonblocking
15 6596889 [main] emacs 7036 fhandler_pty_slave::read: read(0x428900, 4095)
handle 0x1B4
19 6596908 [main] emacs 7036 fhandler_pty_slave::read: wait timed out,
time_to_wait 0
16 6596924 [main] emacs 7036 fhandler_pty_slave::read: -1=read(0x428900,
4095)
15 6596939 [main] emacs 7036 read: -1 = read(3, 0x428900, 4095), errno 11
119 6597058 [main] emacs 7036 fcntl64: fcntl(3, 4, ...)
17 6597075 [main] emacs 7036 fhandler_base::set_flags: flags 0x18002,
supplied_bin 0x0
44 6597119 [main] emacs 7036 fhandler_base::set_flags: O_TEXT/O_BINARY set
in flags 0x10000
15 6597134 [main] emacs 7036 fhandler_base::set_flags: filemode set to binary
17 6597151 [main] emacs 7036 fcntl64: 0 = fcntl(3, 4, 0x0)
19 6597170 [main] emacs 7036 read: read(4, 0x4289E0, 4096) nonblocking
24 6597194 [main] emacs 7036 fhandler_pty_master::hit_eof: all other handles
closed
15 6597209 [main] emacs 7036 fhandler_pty_master::process_slave_output:
returning 0
16 6597225 [main] emacs 7036 read: 0 = read(4, 0x4289E0, 4096)
121 6597346 [main] emacs 7036 fcntl64: fcntl(3, 4, ...)
15 6597361 [main] emacs 7036 fhandler_base::set_flags: flags 0x1C002,
supplied_bin 0x0
15 6597376 [main] emacs 7036 fhandler_base::set_flags: O_TEXT/O_BINARY set
in flags 0x10000
16 6597392 [main] emacs 7036 fhandler_base::set_flags: filemode set to binary
15 6597407 [main] emacs 7036 fcntl64: 0 = fcntl(3, 4, 0x4000)
125 6597532 [main] emacs 7036 read: read(3, 0x428940, 4095) nonblocking
16 6597548 [main] emacs 7036 fhandler_pty_slave::read: read(0x428940, 4095)
handle 0x1B4
19 6597567 [main] emacs 7036 fhandler_pty_slave::read: wait timed out,
time_to_wait 0
15 6597582 [main] emacs 7036 fhandler_pty_slave::read: -1=read(0x428940,
4095)
16 6597598 [main] emacs 7036 read: -1 = read(3, 0x428940, 4095), errno 11
120 6597718 [main] emacs 7036 fcntl64: fcntl(3, 4, ...)
16 6597734 [main] emacs 7036 fhandler_base::set_flags: flags 0x18002,
supplied_bin 0x0
15 6597749 [main] emacs 7036 fhandler_base::set_flags: O_TEXT/O_BINARY set
in flags 0x10000
15 6597764 [main] emacs 7036 fhandler_base::set_flags: filemode set to binary
15 6597779 [main] emacs 7036 fcntl64: 0 = fcntl(3, 4, 0x0)
18 6597797 [main] emacs 7036 cygwin_select: select(5, 0x429B90, 0x429BA0,
0x0, 0x429920)
17 6597814 [main] emacs 7036 cygwin_select: to->tv_sec 0, to->tv_usec
485999, ms 485
56 6597870 [main] emacs 7036 dtable::select_read: /dev/tty fd 3
93 6597963 [main] emacs 7036 dtable::select_read: /dev/ptmx fd 4
15 6597978 [main] emacs 7036 select: sel.always_ready 0
42 6598020 [main] emacs 7036 select_stuff::wait: m 4, ms 485
26 6598046 [pipesel] emacs 7036 fhandler_pty_master::hit_eof: all other
handles closed
16 6598062 [pipesel] emacs 7036 peek_pipe: read: /dev/ptmx, saw EOF
19 6598081 [main] emacs 7036 select_stuff::wait: wait_ret 2. verifying
17 6598098 [main] emacs 7036 set_bits: me 0x600029700, testing fd 4
(/dev/ptmx)
16 6598114 [main] emacs 7036 set_bits: ready 1
15 6598129 [main] emacs 7036 select_stuff::wait: gotone 1
15 6598144 [main] emacs 7036 select_stuff::wait: returning 0
16 6598160 [main] emacs 7036 select: res 0
15 6598175 [main] emacs 7036 peek_pipe: /dev/ptmx, already ready for read
16 6598191 [main] emacs 7036 set_bits: me 0x600029700, testing fd 4
(/dev/ptmx)
15 6598206 [main] emacs 7036 set_bits: ready 1
30 6598236 [main] emacs 7036 select_stuff::cleanup: calling cleanup routines
94 6598330 [main] emacs 7036 select_stuff::destroy: deleting select records
142 6598472 [main] emacs 7036 select_stuff::cleanup: calling cleanup routines
15 6598487 [main] emacs 7036 select_stuff::destroy: deleting select records
16 6598503 [main] emacs 7036 cygwin_select: 1 = select(5, 0x429B90,
0x429BA0, 0x0, 0x429920)
121 6598624 [main] emacs 7036 fcntl64: fcntl(3, 4, ...)
16 6598640 [main] emacs 7036 fhandler_base::set_flags: flags 0x1C002,
supplied_bin 0x0
16 6598656 [main] emacs 7036 fhandler_base::set_flags: O_TEXT/O_BINARY set
in flags 0x10000
15 6598671 [main] emacs 7036 fhandler_base::set_flags: filemode set to binary
16 6598687 [main] emacs 7036 fcntl64: 0 = fcntl(3, 4, 0x4000)
119 6598806 [main] emacs 7036 read: read(3, 0x428900, 4095) nonblocking
15 6598821 [main] emacs 7036 fhandler_pty_slave::read: read(0x428900, 4095)
handle 0x1B4
19 6598840 [main] emacs 7036 fhandler_pty_slave::read: wait timed out,
time_to_wait 0
15 6598855 [main] emacs 7036 fhandler_pty_slave::read: -1=read(0x428900,
4095)
16 6598871 [main] emacs 7036 read: -1 = read(3, 0x428900, 4095), errno 11
116 6598987 [main] emacs 7036 fcntl64: fcntl(3, 4, ...)
15 6599002 [main] emacs 7036 fhandler_base::set_flags: flags 0x18002,
supplied_bin 0x0
16 6599018 [main] emacs 7036 fhandler_base::set_flags: O_TEXT/O_BINARY set
in flags 0x10000
15 6599033 [main] emacs 7036 fhandler_base::set_flags: filemode set to binary
15 6599048 [main] emacs 7036 fcntl64: 0 = fcntl(3, 4, 0x0)
17 6599065 [main] emacs 7036 read: read(4, 0x4289E0, 4096) nonblocking
21 6599086 [main] emacs 7036 fhandler_pty_master::hit_eof: all other handles
closed
15 6599101 [main] emacs 7036 fhandler_pty_master::process_slave_output:
returning 0
16 6599117 [main] emacs 7036 read: 0 = read(4, 0x4289E0, 4096)
118 6599235 [main] emacs 7036 fcntl64: fcntl(3, 4, ...)
15 6599250 [main] emacs 7036 fhandler_base::set_flags: flags 0x1C002,
supplied_bin 0x0
15 6599265 [main] emacs 7036 fhandler_base::set_flags: O_TEXT/O_BINARY set
in flags 0x10000
16 6599281 [main] emacs 7036 fhandler_base::set_flags: filemode set to binary
15 6599296 [main] emacs 7036 fcntl64: 0 = fcntl(3, 4, 0x4000)
116 6599412 [main] emacs 7036 read: read(3, 0x428940, 4095) nonblocking
15 6599427 [main] emacs 7036 fhandler_pty_slave::read: read(0x428940, 4095)
handle 0x1B4
18 6599445 [main] emacs 7036 fhandler_pty_slave::read: wait timed out,
time_to_wait 0
15 6599460 [main] emacs 7036 fhandler_pty_slave::read: -1=read(0x428940,
4095)
16 6599476 [main] emacs 7036 read: -1 = read(3, 0x428940, 4095), errno 11
116 6599592 [main] emacs 7036 fcntl64: fcntl(3, 4, ...)
15 6599607 [main] emacs 7036 fhandler_base::set_flags: flags 0x18002,
supplied_bin 0x0
18 6599625 [main] emacs 7036 fhandler_base::set_flags: O_TEXT/O_BINARY set
in flags 0x10000
17 6599642 [main] emacs 7036 fhandler_base::set_flags: filemode set to binary
16 6599658 [main] emacs 7036 fcntl64: 0 = fcntl(3, 4, 0x0)
16 6599674 [main] emacs 7036 cygwin_select: select(5, 0x429B90, 0x429BA0,
0x0, 0x429920)
16 6599690 [main] emacs 7036 cygwin_select: to->tv_sec 0, to->tv_usec
483999, ms 483
56 6599746 [main] emacs 7036 dtable::select_read: /dev/tty fd 3
92 6599838 [main] emacs 7036 dtable::select_read: /dev/ptmx fd 4
15 6599853 [main] emacs 7036 select: sel.always_ready 0
42 6599895 [main] emacs 7036 select_stuff::wait: m 4, ms 483
--
Problem reports: http://cygwin.com/problems.html
FAQ: http://cygwin.com/faq/
Documentation: http://cygwin.com/docs.html
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
