Print only process ptids from linux-fork.c
This commit causes a "process ptid" to be passed to all calls
of target_pid_to_str in linux-fork.c. A "process ptid" is one
in which only the pid component is set to a non-zero value;
both the lwp and tid components are zero.
The reason for doing this is that pids associated with checkpoints can
never be a thread due to the fact that checkpoints (which are
implemented by forking a process) can only (reasonably) work with
single-threaded processes.
Without this commit, many of the "info checkpoints" commands
in gdb.multi/checkpoint-multi.exp will incorrectly show some
of the checkpoints as threads. E.g...
Id Active Target Id Frame
* 1.0 y Thread 0x7ffff7cb5740 (LWP 581704) at 0x401199, file hello.c, line 51
1.2 n process 581716 at 0x401199, file hello.c, line 51
1.3 n process 581717 at 0x401199, file hello.c, line 51
2.1 n process 581708 at 0x401258, file goodbye.c, line 62
2.2 y Thread 0x7ffff7cb5740 (LWP 581712) at 0x401258, file goodbye.c, line 62
3.0 y Thread 0x7ffff7cb5740 (LWP 581713) at 0x40115c, file hangout.c, line 31
3.2 n process 581715 at 0x40115c, file hangout.c, line 31
(gdb
With this commit in place, the output looks like this instead:
Id Active Target Id Frame
* 1.0 y process 535276 at 0x401199, file hello.c, line 51
1.2 n process 535288 at 0x401199, file hello.c, line 51
1.3 n process 535289 at 0x401199, file hello.c, line 51
2.1 n process 535280 at 0x401258, file goodbye.c, line 62
2.2 y process 535284 at 0x401258, file goodbye.c, line 62
3.0 y process 535285 at 0x40115c, file hangout.c, line 31
3.2 n process 535287 at 0x40115c, file hangout.c, line 31
(For brevity, I've removed the directory elements in each of the paths
above.)
The testcase, gdb.multi/checkpoint-multi.exp, has been updated to
reflect the fact that only "process" should now appear in output
from "info checkpoints".
Reviewed-By: Tom Tromey <tom@tromey.com>
Approved-By: Andrew Burgess <aburgess@redhat.com>
2 files changed
