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313f3b21cb
I don't find that the bpstat typedef, which hides a pointer, is particularly useful. In fact, it confused me many times, and I just see it as something to remember that adds cognitive load. Also, with C++, we might want to be able to pass bpstats objects by const-reference, not necessarily by pointer. So, remove the bpstat typedef and rename struct bpstats to bpstat (since it represents one bpstat, it makes sense that it is singular). Change-Id: I52e763b6e54ee666a9e045785f686d37b4f5f849
100 lines
2.9 KiB
C
100 lines
2.9 KiB
C
/* Python interface to inferior stop events.
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Copyright (C) 2009-2021 Free Software Foundation, Inc.
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This file is part of GDB.
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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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#include "defs.h"
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#include "py-stopevent.h"
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gdbpy_ref<>
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create_stop_event_object (PyTypeObject *py_type)
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{
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gdbpy_ref<> thread = py_get_event_thread (inferior_ptid);
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return create_thread_event_object (py_type, thread.get ());
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}
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/* Callback observers when a stop event occurs. This function will create a
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new Python stop event object. If only a specific thread is stopped the
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thread object of the event will be set to that thread. Otherwise, if all
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threads are stopped thread object will be set to None.
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return 0 if the event was created and emitted successfully otherwise
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returns -1. */
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int
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emit_stop_event (struct bpstat *bs, enum gdb_signal stop_signal)
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{
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gdbpy_ref<> stop_event_obj;
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gdbpy_ref<> list;
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PyObject *first_bp = NULL;
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struct bpstat *current_bs;
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if (evregpy_no_listeners_p (gdb_py_events.stop))
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return 0;
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/* Add any breakpoint set at this location to the list. */
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for (current_bs = bs; current_bs != NULL; current_bs = current_bs->next)
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{
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if (current_bs->breakpoint_at
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&& current_bs->breakpoint_at->py_bp_object)
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{
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PyObject *current_py_bp =
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(PyObject *) current_bs->breakpoint_at->py_bp_object;
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if (list == NULL)
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{
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list.reset (PyList_New (0));
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if (list == NULL)
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return -1;
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}
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if (PyList_Append (list.get (), current_py_bp))
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return -1;
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if (first_bp == NULL)
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first_bp = current_py_bp;
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}
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}
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if (list != NULL)
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{
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stop_event_obj = create_breakpoint_event_object (list.get (),
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first_bp);
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if (stop_event_obj == NULL)
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return -1;
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}
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/* Check if the signal is "Signal 0" or "Trace/breakpoint trap". */
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if (stop_signal != GDB_SIGNAL_0
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&& stop_signal != GDB_SIGNAL_TRAP)
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{
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stop_event_obj = create_signal_event_object (stop_signal);
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if (stop_event_obj == NULL)
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return -1;
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}
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/* If all fails emit an unknown stop event. All event types should
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be known and this should eventually be unused. */
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if (stop_event_obj == NULL)
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{
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stop_event_obj = create_stop_event_object (&stop_event_object_type);
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if (stop_event_obj == NULL)
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return -1;
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}
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return evpy_emit_event (stop_event_obj.get (), gdb_py_events.stop);
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}
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