1 /* Handling of inferior events for the event loop for GDB, the GNU debugger. 2 Copyright (C) 1999-2024 Free Software Foundation, Inc. 3 Written by Elena Zannoni <ezannoni@cygnus.com> of Cygnus Solutions. 4 5 This file is part of GDB. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 #include "inferior.h" 21 #include "infrun.h" 22 #include "gdbsupport/event-loop.h" 23 #include "event-top.h" 24 #include "inf-loop.h" 25 #include "remote.h" 26 #include "language.h" 27 #include "gdbthread.h" 28 #include "interps.h" 29 #include "top.h" 30 #include "ui.h" 31 #include "observable.h" 32 33 /* General function to handle events in the inferior. */ 34 35 void 36 inferior_event_handler (enum inferior_event_type event_type) 37 { 38 switch (event_type) 39 { 40 case INF_REG_EVENT: 41 fetch_inferior_event (); 42 break; 43 44 case INF_EXEC_COMPLETE: 45 if (!non_stop) 46 { 47 /* Unregister the inferior from the event loop. This is done 48 so that when the inferior is not running we don't get 49 distracted by spurious inferior output. */ 50 if (target_has_execution () && target_can_async_p ()) 51 target_async (false); 52 } 53 54 /* Do all continuations associated with the whole inferior (not 55 a particular thread). */ 56 if (inferior_ptid != null_ptid) 57 current_inferior ()->do_all_continuations (); 58 59 /* When running a command list (from a user command, say), these 60 are only run when the command list is all done. */ 61 if (current_ui->async) 62 { 63 check_frame_language_change (); 64 65 /* Don't propagate breakpoint commands errors. Either we're 66 stopping or some command resumes the inferior. The user will 67 be informed. */ 68 try 69 { 70 bpstat_do_actions (); 71 } 72 catch (const gdb_exception_error &e) 73 { 74 /* If the user was running a foreground execution 75 command, then propagate the error so that the prompt 76 can be reenabled. Otherwise, the user already has 77 the prompt and is typing some unrelated command, so 78 just inform the user and swallow the exception. */ 79 if (current_ui->prompt_state == PROMPT_BLOCKED) 80 throw; 81 else 82 exception_print (gdb_stderr, e); 83 } 84 } 85 break; 86 87 default: 88 gdb_printf (gdb_stderr, _("Event type not recognized.\n")); 89 break; 90 } 91 } 92