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gdb/python: add a 'connection_num' attribute to Inferior objects

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Define a 'connection_num' attribute for Inferior objects.  The
read-only attribute is the ID of the connection of an inferior, as
printed by "info inferiors".  In GDB's internal terminology, that's
the process stratum target of the inferior.  If the inferior has no
target connection, the attribute is None.

gdb/ChangeLog:
2021-05-14  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* python/py-inferior.c (infpy_get_connection_num): New function.
	(inferior_object_getset): Add a new element for 'connection_num'.
	* NEWS: Mention the 'connection_num' attribute of Inferior objects.

gdb/doc/ChangeLog:
2021-05-14  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* python.texi (Inferiors In Python): Mention the 'connection_num'
	attribute.

gdb/testsuite/ChangeLog:
2021-05-14  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* gdb.python/py-inferior.exp: Add test cases for 'connection_num'.
This commit is contained in:
Tankut Baris Aktemur 2021-05-14 11:56:31 +02:00
parent 2f63ec5ccc
commit 55789354fc
7 changed files with 70 additions and 1 deletions
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25
gdb/testsuite/gdb.python/py-inferior.exp
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@ -51,6 +51,7 @@ gdb_py_test_silent_cmd "python i0 = inferiors\[0\]" "get first inferior" 0
gdb_test "python print ('result = %s' % (i0 == inferiors\[0\]))" " = True" "test equality comparison (true)"
gdb_test "python print ('result = %s' % i0.num)" " = \[0-9\]+" "test Inferior.num"
gdb_test "python print ('result = %s' % i0.connection_num)" " = \[0-9\]+" "test Inferior.connection_num"
gdb_test "python print ('result = %s' % i0.pid)" " = \[0-9\]+" "test Inferior.pid"
gdb_test "python print ('result = %s' % i0.was_attached)" " = False" "test Inferior.was_attached"
gdb_test "python print (i0.threads ())" "\\(<gdb.InferiorThread object at 0x\[\[:xdigit:\]\]+>,\\)" "test Inferior.threads"
@ -262,6 +263,8 @@ with_test_prefix "is_valid" {
# correctly.
gdb_test "python print (inf_list\[1\].num)" \
"RuntimeError: Inferior no longer exists.*"
gdb_test "python print (inf_list\[1\].connection_num)" \
"RuntimeError: Inferior no longer exists.*"
gdb_test "python print (inf_list\[1\].pid)" \
"RuntimeError: Inferior no longer exists.*"
gdb_test "python print (inf_list\[1\].was_attached)" \
@ -278,10 +281,30 @@ with_test_prefix "is_valid" {
with_test_prefix "selected_inferior" {
gdb_test "inferior 1" ".*" "switch to first inferior"
gdb_test "py print (gdb.selected_inferior().num)" "1" "first inferior selected"
gdb_test "py print (gdb.selected_inferior().connection_num)" "1" \
"first inferior's connection"
# Figure out if inf 1 has a native target.
set inf_1_is_native [gdb_is_target_native]
gdb_test "add-inferior" "Added inferior 3 on connection .*" "create new inferior"
gdb_test "add-inferior -no-connection" "Added inferior 3" "create new inferior"
gdb_test "inferior 3" ".*" "switch to third inferior"
gdb_test "py print (gdb.selected_inferior().num)" "3" "third inferior selected"
gdb_test "py print (gdb.selected_inferior().connection_num)" "None" \
"third inferior's None connection"
gdb_test "target native" "Done. Use the \"run\" command to start a process." \
"target for the third inferior"
# If inf 1 has a native target, inf 3's target is shared with 1's.
# Otherwise, it must have created a new target with a new number.
if {$inf_1_is_native} {
set expected_connection_num 1
} else {
set expected_connection_num 2
}
gdb_test "py print (gdb.selected_inferior().connection_num)" \
"$expected_connection_num" \
"third inferior's native connection"
gdb_test "inferior 1" ".*" "switch back to first inferior"
gdb_test_no_output "remove-inferiors 3" "remove second inferior"
}