388a708404
This removes infcall-specific special casing from normal_stop, simplifying it. Like the "finish" command's, the FSM is responsible for storing the function's return value. gdb/ChangeLog: 2015-09-09 Pedro Alves <palves@redhat.com> * infcall.c: Include thread_fsm.h. (struct call_return_meta_info): New. (get_call_return_value): New function, factored out from call_function_by_hand_dummy. (struct call_thread_fsm): New. (call_thread_fsm_ops): New global. (new_call_thread_fsm, call_thread_fsm_should_stop) (call_thread_fsm_should_notify_stop): New functions. (run_inferior_call): Add 'sm' parameter. Associate the FSM with the thread. (call_function_by_hand_dummy): Create a new call_thread_fsm instance, associate it with the thread, and wait for the FSM to finish. If finished successfully, fetch the function's result value out of the FSM. * infrun.c (fetch_inferior_event): If the FSM says the stop shouldn't be notified, don't call normal_stop. (maybe_remove_breakpoints): New function, factored out from ... (normal_stop): ... here. Simplify. * infrun.h (maybe_remove_breakpoints): Declare. * thread-fsm.c (thread_fsm_should_notify_stop): New function. (thread-fsm.h) <struct thread_fsm_ops>: New field. (thread_fsm_should_notify_stop): Declare.
107 lines
2.4 KiB
C
107 lines
2.4 KiB
C
/* Thread command's finish-state machine, for GDB, the GNU debugger.
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Copyright (C) 2015 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 "thread-fsm.h"
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/* See thread-fsm.h. */
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void
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thread_fsm_ctor (struct thread_fsm *self, struct thread_fsm_ops *ops)
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{
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self->finished = 0;
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self->ops = ops;
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}
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/* See thread-fsm.h. */
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void
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thread_fsm_delete (struct thread_fsm *self)
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{
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if (self != NULL)
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{
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if (self->ops->dtor != NULL)
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self->ops->dtor (self);
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xfree (self);
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}
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}
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/* See thread-fsm.h. */
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void
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thread_fsm_clean_up (struct thread_fsm *self)
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{
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if (self->ops->clean_up != NULL)
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self->ops->clean_up (self);
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}
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/* See thread-fsm.h. */
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int
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thread_fsm_should_stop (struct thread_fsm *self)
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{
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return self->ops->should_stop (self);
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}
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/* See thread-fsm.h. */
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struct return_value_info *
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thread_fsm_return_value (struct thread_fsm *self)
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{
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if (self->ops->return_value != NULL)
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return self->ops->return_value (self);
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return NULL;
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}
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/* See thread-fsm.h. */
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void
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thread_fsm_set_finished (struct thread_fsm *self)
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{
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self->finished = 1;
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}
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/* See thread-fsm.h. */
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int
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thread_fsm_finished_p (struct thread_fsm *self)
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{
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return self->finished;
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}
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/* See thread-fsm.h. */
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enum async_reply_reason
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thread_fsm_async_reply_reason (struct thread_fsm *self)
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{
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/* If we didn't finish, then the stop reason must come from
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elsewhere. E.g., a breakpoint hit or a signal intercepted. */
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gdb_assert (thread_fsm_finished_p (self));
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return self->ops->async_reply_reason (self);
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}
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/* See thread-fsm.h. */
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int
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thread_fsm_should_notify_stop (struct thread_fsm *self)
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{
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if (self->ops->should_notify_stop != NULL)
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return self->ops->should_notify_stop (self);
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return 1;
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}
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