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c17a9e46 HZ |
1 | /* Python interface to inferior stop events. |
2 | ||
3 | Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "py-stopevent.h" | |
21 | ||
22 | PyObject * | |
23 | create_stop_event_object (PyTypeObject *py_type) | |
24 | { | |
25 | PyObject *stop_event_obj = create_thread_event_object (py_type); | |
26 | ||
27 | if (!stop_event_obj) | |
28 | goto fail; | |
29 | ||
30 | return stop_event_obj; | |
31 | ||
32 | fail: | |
33 | Py_XDECREF (stop_event_obj); | |
34 | return NULL; | |
35 | } | |
36 | ||
37 | /* Callback observers when a stop event occurs. This function will create a | |
38 | new Python stop event object. If only a specific thread is stopped the | |
39 | thread object of the event will be set to that thread. Otherwise, if all | |
40 | threads are stopped thread object will be set to None. | |
41 | return 0 if the event was created and emitted successfully otherwise | |
42 | returns -1. */ | |
43 | ||
44 | int | |
45 | emit_stop_event (struct bpstats *bs, enum target_signal stop_signal) | |
46 | { | |
47 | PyObject *stop_event_obj = NULL; /* Appease GCC warning. */ | |
48 | ||
49 | if (evregpy_no_listeners_p (gdb_py_events.stop)) | |
50 | return 0; | |
51 | ||
52 | if (bs && bs->breakpoint_at | |
53 | && bs->breakpoint_at->py_bp_object) | |
54 | { | |
55 | stop_event_obj = create_breakpoint_event_object ((PyObject *) bs | |
56 | ->breakpoint_at | |
57 | ->py_bp_object); | |
58 | if (!stop_event_obj) | |
59 | goto fail; | |
60 | } | |
61 | ||
62 | /* Check if the signal is "Signal 0" or "Trace/breakpoint trap". */ | |
63 | if (stop_signal != TARGET_SIGNAL_0 | |
64 | && stop_signal != TARGET_SIGNAL_TRAP) | |
65 | { | |
66 | stop_event_obj = | |
67 | create_signal_event_object (stop_signal); | |
68 | if (!stop_event_obj) | |
69 | goto fail; | |
70 | } | |
71 | ||
72 | /* If all fails emit an unknown stop event. All event types should | |
73 | be known and this should eventually be unused. */ | |
74 | if (!stop_event_obj) | |
75 | { | |
76 | stop_event_obj = create_stop_event_object (&stop_event_object_type); | |
77 | if (!stop_event_obj) | |
78 | goto fail; | |
79 | } | |
80 | ||
81 | return evpy_emit_event (stop_event_obj, gdb_py_events.stop); | |
82 | ||
83 | fail: | |
84 | return -1; | |
85 | } | |
86 | ||
87 | GDBPY_NEW_EVENT_TYPE (stop, | |
88 | "gdb.StopEvent", | |
89 | "StopEvent", | |
90 | "GDB stop event object", | |
91 | thread_event_object_type, | |
92 | /*no qual*/); |