diff options
| author | Steve Vinoski <[email protected]> | 2014-10-26 21:23:00 -0400 |
|---|---|---|
| committer | Steve Vinoski <[email protected]> | 2014-10-26 22:06:55 -0400 |
| commit | 1e5eb4314301e33a105a0ff1f860d9d290ea2618 (patch) | |
| tree | abcd79fafc9b86cbc38fb72899ea0caae80d4d9c /erts/emulator/sys/unix/sys.c | |
| parent | 8304aeb0114e61e8f694a58cf9e91a00856c3fe5 (diff) | |
| download | otp-1e5eb4314301e33a105a0ff1f860d9d290ea2618.tar.gz otp-1e5eb4314301e33a105a0ff1f860d9d290ea2618.tar.bz2 otp-1e5eb4314301e33a105a0ff1f860d9d290ea2618.zip | |
Fix "-smp disable" for emulator with dirty schedulers
Running "erl -smp disable" on an emulator built with dirty scheduler
support caused problems such as segmentation violations and emulator status
line outputs containing garbage. For example:
$ erl -smp disable
Segmentation fault (core dumped)
and:
$ erl -smp disable
Erlang/OTP 17 [DEVELOPMENT] [erts-6.2] [source] [64-bit] [ds:10:4297895689:4299948152] [async-threads:280]
This problem also caused the emulator smoke_test_SUITE to hit these same
problems if run in an emulator started with the "-smp disable" option.
Fix this segmentation violation by ensuring that dirty scheduler
information is printed in the status line only when the emulator is
compiled with ERTS_SMP enabled.
With this fix in place, the smoke_test_SUITE now passes when the "-smp
disable" option is used, and the emulator status line prints correctly for
both "-smp enable" and "-smp disable":
$ erl -smp enable
Erlang/OTP 17 [DEVELOPMENT] [erts-6.2] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:10] [kernel-poll:false]
and:
$ erl -smp disable
Erlang/OTP 17 [DEVELOPMENT] [erts-6.2] [source] [64-bit] [async-threads:10] [kernel-poll:false]
Diffstat (limited to 'erts/emulator/sys/unix/sys.c')
0 files changed, 0 insertions, 0 deletions