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61fb73769a
GDB already has a flag to suppress printing notification events, such
as thread and inferior context switches, on the CLI. This is used
internally when executing commands. Make the flag available to the
user via a new command. This is expected to be useful in scripts.
For instance, suppose that when Inferior 1 gets to a certain state,
you want to add and set up a new inferior using the commands below,
but you also want to have a reduced/clean output.
define do-setup
printf "Setting up Inferior 2...\n"
add-inferior -exec a.out
inferior 2
break file.c:3
run
inferior 1
printf "Done\n"
end
Currently, GDB prints
(gdb) do-setup
Setting up Inferior 2...
[New inferior 2]
Added inferior 2 on connection 1 (native)
[Switching to inferior 2 [<null>] (/tmp/a.out)]
Breakpoint 2 at 0x1155: file file.c, line 3.
Thread 2.1 "a.out" hit Breakpoint 2, main () at file.c:3
3 return 0;
[Switching to inferior 1 [process 7670] (/tmp/test)]
[Switching to thread 1.1 (process 7670)]
#0 main () at test.c:2
2 int a = 1;
Done
GDB's Python API make it possible to capture and return GDB's output,
but this does not work for all the streams. In particular, CLI
notification events are not captured:
(gdb) python gdb.execute("do-setup", False, True)
[Switching to inferior 2 [<null>] (/tmp/a.out)]
Thread 2.1 "a.out" hit Breakpoint 2, main () at file.c:3
3 return 0;
[Switching to inferior 1 [process 8263] (/tmp/test)]
[Switching to thread 1.1 (process 8263)]
#0 main () at test.c:2
2 int a = 1;
You can use the new "set suppress-cli-notifications" command to
suppress the output:
(gdb) set suppress-cli-notifications on
(gdb) do-setup
Setting up Inferior 2...
[New inferior 2]
Added inferior 2 on connection 1 (native)
Breakpoint 2 at 0x1155: file file.c, line 3.
Done
27 lines
830 B
C
27 lines
830 B
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2020-2022 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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static int global = 0;
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int
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main ()
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{
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global++;
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global++;
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return 0;
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}
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