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/* Python interface to inferior stop events.
Copyright (C) 2009-2017 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "py-stopevent.h"
PyObject *
create_stop_event_object (PyTypeObject *py_type)
{
PyObject *stop_event_obj = create_thread_event_object (py_type);
if (!stop_event_obj)
goto fail;
return stop_event_obj;
fail:
Py_XDECREF (stop_event_obj);
return NULL;
}
/* Callback observers when a stop event occurs. This function will create a
new Python stop event object. If only a specific thread is stopped the
thread object of the event will be set to that thread. Otherwise, if all
threads are stopped thread object will be set to None.
return 0 if the event was created and emitted successfully otherwise
returns -1. */
int
emit_stop_event (struct bpstats *bs, enum gdb_signal stop_signal)
{
PyObject *stop_event_obj = NULL; /* Appease GCC warning. */
PyObject *list = NULL;
PyObject *first_bp = NULL;
struct bpstats *current_bs;
if (evregpy_no_listeners_p (gdb_py_events.stop))
return 0;
/* Add any breakpoint set at this location to the list. */
for (current_bs = bs; current_bs != NULL; current_bs = current_bs->next)
{
if (current_bs->breakpoint_at
&& current_bs->breakpoint_at->py_bp_object)
{
PyObject *current_py_bp =
(PyObject *) current_bs->breakpoint_at->py_bp_object;
if (list == NULL)
{
list = PyList_New (0);
if (!list)
goto fail;
}
if (PyList_Append (list, current_py_bp))
goto fail;
if (first_bp == NULL)
first_bp = current_py_bp;
}
}
if (list != NULL)
{
stop_event_obj = create_breakpoint_event_object (list, first_bp);
if (!stop_event_obj)
goto fail;
Py_DECREF (list);
}
/* Check if the signal is "Signal 0" or "Trace/breakpoint trap". */
if (stop_signal != GDB_SIGNAL_0
&& stop_signal != GDB_SIGNAL_TRAP)
{
stop_event_obj =
create_signal_event_object (stop_signal);
if (!stop_event_obj)
goto fail;
}
/* If all fails emit an unknown stop event. All event types should
be known and this should eventually be unused. */
if (!stop_event_obj)
{
stop_event_obj = create_stop_event_object (&stop_event_object_type);
if (!stop_event_obj)
goto fail;
}
return evpy_emit_event (stop_event_obj, gdb_py_events.stop);
fail:
Py_XDECREF (list);
return -1;
}
GDBPY_NEW_EVENT_TYPE (stop,
"gdb.StopEvent",
"StopEvent",
"GDB stop event object",
thread_event_object_type);
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