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0e3b7c25ee
This commit adds a new object type gdb.TargetConnection. This new
type represents a connection within GDB (a connection as displayed by
'info connections').
There's three ways to find a gdb.TargetConnection, there's a new
'gdb.connections()' function, which returns a list of all currently
active connections.
Or you can read the new 'connection' property on the gdb.Inferior
object type, this contains the connection for that inferior (or None
if the inferior has no connection, for example, it is exited).
Finally, there's a new gdb.events.connection_removed event registry,
this emits a new gdb.ConnectionEvent whenever a connection is removed
from GDB (this can happen when all inferiors using a connection exit,
though this is not always the case, depending on the connection type).
The gdb.ConnectionEvent has a 'connection' property, which is the
gdb.TargetConnection being removed from GDB.
The gdb.TargetConnection has an 'is_valid()' method. A connection
object becomes invalid when the underlying connection is removed from
GDB (as discussed above, this might be when all inferiors using a
connection exit, or it might be when the user explicitly replaces a
connection in GDB by issuing another 'target' command).
The gdb.TargetConnection has the following read-only properties:
'num': The number for this connection,
'type': e.g. 'native', 'remote', 'sim', etc
'description': The longer description as seen in the 'info
connections' command output.
'details': A string or None. Extra details for the connection, for
example, a remote connection's details might be
'hostname:port'.
70 lines
2.8 KiB
Plaintext
70 lines
2.8 KiB
Plaintext
# Copyright (C) 2021 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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#
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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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#
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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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# This file is for testing the gdb.TargetConnection API. This API is
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# already tested in gdb.multi/multi-target-info-inferiors.exp and
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# gdb.python/py-inferior.exp, this file just covers some edge cases
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# that are not tested in other places.
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load_lib gdb-python.exp
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standard_testfile
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if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] } {
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return -1
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}
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# Skip all tests if Python scripting is not enabled.
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if { [skip_python_tests] } { continue }
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if ![runto_main] then {
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return 0
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}
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# Create a gdb.TargetConnection object and check it is initially
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# valid.
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gdb_test_no_output "python conn = gdb.selected_inferior().connection"
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gdb_test "python print(conn)" \
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"<gdb.TargetConnection num=1, what=\"\[^\"\]+\">" \
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"print gdb.TargetConnection while it is still valid"
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gdb_test "python print(conn.is_valid())" "True" "is_valid returns True"
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# Get the connection again, and ensure we get the exact same object.
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gdb_test_no_output "python conn2 = gdb.selected_inferior().connection"
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gdb_test "python print('Same object: %s' % (conn is conn2))" "True"
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# Now invalidate the connection, and ensure that the is_valid method
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# starts to return False.
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gdb_test "info connections" "\r\n\\* 1 .*" \
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"info connections while the connection is still around"
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gdb_test "disconnect" "" "kill the inferior" \
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"A program is being debugged already\\. Kill it\\? .*y or n. $" "y"
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gdb_test "info connections" "No connections\\." \
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"info connections now all the connections have gone"
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gdb_test "python print(conn)" "<gdb.TargetConnection \\(invalid\\)>" \
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"print gdb.TargetConnection now its invalid"
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gdb_test "python print(conn.is_valid())" "False" "is_valid returns False"
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# Now check that accessing properties of the invalid connection cases
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# an error.
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gdb_test "python print(conn.num)" \
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"RuntimeError: Connection no longer exists\\.\r\n.*"
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gdb_test "python print(conn.type)" \
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"RuntimeError: Connection no longer exists\\.\r\n.*"
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gdb_test "python print(conn.description)" \
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"RuntimeError: Connection no longer exists\\.\r\n.*"
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gdb_test "python print(conn.details)" \
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"RuntimeError: Connection no longer exists\\.\r\n.*"
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