gdb/thread-fsm.c

   1 /* Thread command's finish-state machine, for GDB, the GNU debugger.
   2    Copyright (C) 2015 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #include "defs.h"
  20 #include "thread-fsm.h"
  21
  22 /* See thread-fsm.h.  */
  23
  24 void
  25 thread_fsm_ctor (struct thread_fsm *self, struct thread_fsm_ops *ops)
  26 {
  27   self->finished = 0;
  28   self->ops = ops;
  29 }
  30
  31 /* See thread-fsm.h.  */
  32
  33 void
  34 thread_fsm_delete (struct thread_fsm *self)
  35 {
  36   if (self != NULL)
  37     {
  38       if (self->ops->dtor != NULL)
  39         self->ops->dtor (self);
  40       xfree (self);
  41     }
  42 }
  43
  44 /* See thread-fsm.h.  */
  45
  46 void
  47 thread_fsm_clean_up (struct thread_fsm *self)
  48 {
  49   if (self->ops->clean_up != NULL)
  50     self->ops->clean_up (self);
  51 }
  52
  53 /* See thread-fsm.h.  */
  54
  55 int
  56 thread_fsm_should_stop (struct thread_fsm *self)
  57 {
  58   return self->ops->should_stop (self);
  59 }
  60
  61 /* See thread-fsm.h.  */
  62
  63 struct return_value_info *
  64 thread_fsm_return_value (struct thread_fsm *self)
  65 {
  66   if (self->ops->return_value != NULL)
  67     return self->ops->return_value (self);
  68   return NULL;
  69 }
  70
  71 /* See thread-fsm.h.  */
  72
  73 void
  74 thread_fsm_set_finished (struct thread_fsm *self)
  75 {
  76   self->finished = 1;
  77 }
  78
  79 /* See thread-fsm.h.  */
  80
  81 int
  82 thread_fsm_finished_p (struct thread_fsm *self)
  83 {
  84   return self->finished;
  85 }
  86
  87 /* See thread-fsm.h.  */
  88
  89 enum async_reply_reason
  90 thread_fsm_async_reply_reason (struct thread_fsm *self)
  91 {
  92   /* If we didn't finish, then the stop reason must come from
  93      elsewhere.  E.g., a breakpoint hit or a signal intercepted.  */
  94   gdb_assert (thread_fsm_finished_p (self));
  95
  96   return self->ops->async_reply_reason (self);
  97 }
  98
  99 /* See thread-fsm.h.  */
 100
 101 int
 102 thread_fsm_should_notify_stop (struct thread_fsm *self)
 103 {
 104   if (self->ops->should_notify_stop != NULL)
 105     return self->ops->should_notify_stop (self);
 106   return 1;
 107 }