gdb/thread-fsm.c

   1 /* Thread command's finish-state machine, for GDB, the GNU debugger.
   2    Copyright (C) 2015-2019 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                  struct interp *cmd_interp)
  27 {
  28   self->command_interp = cmd_interp;
  29   self->finished = 0;
  30   self->ops = ops;
  31 }
  32
  33 /* See thread-fsm.h.  */
  34
  35 void
  36 thread_fsm_delete (struct thread_fsm *self)
  37 {
  38   if (self != NULL)
  39     {
  40       if (self->ops->dtor != NULL)
  41         self->ops->dtor (self);
  42       xfree (self);
  43     }
  44 }
  45
  46 /* See thread-fsm.h.  */
  47
  48 void
  49 thread_fsm_clean_up (struct thread_fsm *self, struct thread_info *thread)
  50 {
  51   if (self->ops->clean_up != NULL)
  52     self->ops->clean_up (self, thread);
  53 }
  54
  55 /* See thread-fsm.h.  */
  56
  57 int
  58 thread_fsm_should_stop (struct thread_fsm *self, struct thread_info *thread)
  59 {
  60   return self->ops->should_stop (self, thread);
  61 }
  62
  63 /* See thread-fsm.h.  */
  64
  65 struct return_value_info *
  66 thread_fsm_return_value (struct thread_fsm *self)
  67 {
  68   if (self->ops->return_value != NULL)
  69     return self->ops->return_value (self);
  70   return NULL;
  71 }
  72
  73 /* See thread-fsm.h.  */
  74
  75 void
  76 thread_fsm_set_finished (struct thread_fsm *self)
  77 {
  78   self->finished = 1;
  79 }
  80
  81 /* See thread-fsm.h.  */
  82
  83 int
  84 thread_fsm_finished_p (struct thread_fsm *self)
  85 {
  86   return self->finished;
  87 }
  88
  89 /* See thread-fsm.h.  */
  90
  91 enum async_reply_reason
  92 thread_fsm_async_reply_reason (struct thread_fsm *self)
  93 {
  94   /* If we didn't finish, then the stop reason must come from
  95      elsewhere.  E.g., a breakpoint hit or a signal intercepted.  */
  96   gdb_assert (thread_fsm_finished_p (self));
  97
  98   return self->ops->async_reply_reason (self);
  99 }
 100
 101 /* See thread-fsm.h.  */
 102
 103 int
 104 thread_fsm_should_notify_stop (struct thread_fsm *self)
 105 {
 106   if (self->ops->should_notify_stop != NULL)
 107     return self->ops->should_notify_stop (self);
 108   return 1;
 109 }