| 1 | /* Continuations for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, |
| 4 | 2009, 2010, 2011 Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | #ifndef CONTINUATIONS_H |
| 22 | #define CONTINUATIONS_H |
| 23 | |
| 24 | struct thread_info; |
| 25 | struct inferior; |
| 26 | |
| 27 | /* To continue the execution commands when running gdb asynchronously. |
| 28 | A continuation structure contains a pointer to a function to be called |
| 29 | to finish the command, once the target has stopped. Such mechanism is |
| 30 | used by the finish and until commands, and in the remote protocol |
| 31 | when opening an extended-remote connection. */ |
| 32 | |
| 33 | /* Prototype of the continuation callback functions. ARG is the |
| 34 | continuation argument registered in the corresponding |
| 35 | add_*_continuation call. ERR is true when the command should be |
| 36 | cancelled instead of finished normally. In that case, the |
| 37 | continuation should clean up whatever state had been set up for the |
| 38 | command in question (e.g., remove momentary breakpoints). This |
| 39 | happens e.g., when an error was thrown while handling a target |
| 40 | event, or when the inferior thread the command was being executed |
| 41 | on exits. */ |
| 42 | typedef void (continuation_ftype) (void *arg, int err); |
| 43 | |
| 44 | /* Prototype of the function responsible for releasing the argument |
| 45 | passed to the continuation callback functions, either when the |
| 46 | continuation is called, or discarded. */ |
| 47 | typedef void (continuation_free_arg_ftype) (void *); |
| 48 | |
| 49 | /* Thread specific continuations. */ |
| 50 | |
| 51 | extern void add_continuation (struct thread_info *, |
| 52 | continuation_ftype *, void *, |
| 53 | continuation_free_arg_ftype *); |
| 54 | extern void do_all_continuations (int err); |
| 55 | extern void do_all_continuations_thread (struct thread_info *, int err); |
| 56 | extern void discard_all_continuations (void); |
| 57 | extern void discard_all_continuations_thread (struct thread_info *); |
| 58 | |
| 59 | extern void add_intermediate_continuation (struct thread_info *, |
| 60 | continuation_ftype *, void *, |
| 61 | continuation_free_arg_ftype *); |
| 62 | extern void do_all_intermediate_continuations (int err); |
| 63 | extern void do_all_intermediate_continuations_thread (struct thread_info *, int err); |
| 64 | extern void discard_all_intermediate_continuations (void); |
| 65 | extern void discard_all_intermediate_continuations_thread (struct thread_info *); |
| 66 | |
| 67 | /* Inferior specific (any thread) continuations. */ |
| 68 | |
| 69 | extern void add_inferior_continuation (continuation_ftype *, |
| 70 | void *, |
| 71 | continuation_free_arg_ftype *); |
| 72 | extern void do_all_inferior_continuations (int err); |
| 73 | extern void discard_all_inferior_continuations (struct inferior *inf); |
| 74 | |
| 75 | #endif |