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-------------------------------------------------------------------------------
--- --
--- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
--- --
--- S Y S T E M . T A S K I N G . D E B U G --
--- --
--- B o d y --
--- --
--- Copyright (C) 1997-2009, Free Software Foundation, Inc. --
--- --
--- GNARL is free software; you can redistribute it and/or modify it under --
--- terms of the GNU General Public License as published by the Free Soft- --
--- ware Foundation; either version 3, or (at your option) any later ver- --
--- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
--- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
--- or FITNESS FOR A PARTICULAR PURPOSE. --
--- --
--- As a special exception under Section 7 of GPL version 3, you are granted --
--- additional permissions described in the GCC Runtime Library Exception, --
--- version 3.1, as published by the Free Software Foundation. --
--- --
--- You should have received a copy of the GNU General Public License and --
--- a copy of the GCC Runtime Library Exception along with this program; --
--- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
--- <http://www.gnu.org/licenses/>. --
--- --
--- GNARL was developed by the GNARL team at Florida State University. --
--- Extensive contributions were provided by Ada Core Technologies, Inc. --
--- --
-------------------------------------------------------------------------------
-
--- This package encapsulates all direct interfaces to task debugging services
--- that are needed by gdb with gnat mode.
-
--- Note : This file *must* be compiled with debugging information
-
--- Do not add any dependency to GNARL packages since this package is used
--- in both normal and restricted (ravenscar) environments.
-
-with System.CRTL;
-with System.Task_Primitives;
-with System.Task_Primitives.Operations;
-with Ada.Unchecked_Conversion;
-
-package body System.Tasking.Debug is
-
- package STPO renames System.Task_Primitives.Operations;
-
- function To_Integer is new
- Ada.Unchecked_Conversion (Task_Id, System.Task_Primitives.Task_Address);
-
- type Trace_Flag_Set is array (Character) of Boolean;
-
- Trace_On : Trace_Flag_Set := ('A' .. 'Z' => False, others => True);
-
- -----------------------
- -- Local Subprograms --
- -----------------------
-
- procedure Write (Fd : Integer; S : String; Count : Integer);
-
- procedure Put (S : String);
- -- Display S on standard output
-
- procedure Put_Line (S : String := "");
- -- Display S on standard output with an additional line terminator
-
- ------------------------
- -- Continue_All_Tasks --
- ------------------------
-
- procedure Continue_All_Tasks is
- C : Task_Id;
-
- Dummy : Boolean;
- pragma Unreferenced (Dummy);
-
- begin
- STPO.Lock_RTS;
-
- C := All_Tasks_List;
- while C /= null loop
- Dummy := STPO.Continue_Task (C);
- C := C.Common.All_Tasks_Link;
- end loop;
-
- STPO.Unlock_RTS;
- end Continue_All_Tasks;
-
- --------------------
- -- Get_User_State --
- --------------------
-
- function Get_User_State return Long_Integer is
- begin
- return STPO.Self.User_State;
- end Get_User_State;
-
- ----------------
- -- List_Tasks --
- ----------------
-
- procedure List_Tasks is
- C : Task_Id;
- begin
- C := All_Tasks_List;
-
- while C /= null loop
- Print_Task_Info (C);
- C := C.Common.All_Tasks_Link;
- end loop;
- end List_Tasks;
-
- ------------------------
- -- Print_Current_Task --
- ------------------------
-
- procedure Print_Current_Task is
- begin
- Print_Task_Info (STPO.Self);
- end Print_Current_Task;
-
- ---------------------
- -- Print_Task_Info --
- ---------------------
-
- procedure Print_Task_Info (T : Task_Id) is
- Entry_Call : Entry_Call_Link;
- Parent : Task_Id;
-
- begin
- if T = null then
- Put_Line ("null task");
- return;
- end if;
-
- Put (T.Common.Task_Image (1 .. T.Common.Task_Image_Len) & ": " &
- Task_States'Image (T.Common.State));
-
- Parent := T.Common.Parent;
-
- if Parent = null then
- Put (", parent: <none>");
- else
- Put (", parent: " &
- Parent.Common.Task_Image (1 .. Parent.Common.Task_Image_Len));
- end if;
-
- Put (", prio:" & T.Common.Current_Priority'Img);
-
- if not T.Callable then
- Put (", not callable");
- end if;
-
- if T.Aborting then
- Put (", aborting");
- end if;
-
- if T.Deferral_Level /= 0 then
- Put (", abort deferred");
- end if;
-
- if T.Common.Call /= null then
- Entry_Call := T.Common.Call;
- Put (", serving:");
-
- while Entry_Call /= null loop
- Put (To_Integer (Entry_Call.Self)'Img);
- Entry_Call := Entry_Call.Acceptor_Prev_Call;
- end loop;
- end if;
-
- if T.Open_Accepts /= null then
- Put (", accepting:");
-
- for J in T.Open_Accepts'Range loop
- Put (T.Open_Accepts (J).S'Img);
- end loop;
-
- if T.Terminate_Alternative then
- Put (" or terminate");
- end if;
- end if;
-
- if T.User_State /= 0 then
- Put (", state:" & T.User_State'Img);
- end if;
-
- Put_Line;
- end Print_Task_Info;
-
- ---------
- -- Put --
- ---------
-
- procedure Put (S : String) is
- begin
- Write (2, S, S'Length);
- end Put;
-
- --------------
- -- Put_Line --
- --------------
-
- procedure Put_Line (S : String := "") is
- begin
- Write (2, S & ASCII.LF, S'Length + 1);
- end Put_Line;
-
- ----------------------
- -- Resume_All_Tasks --
- ----------------------
-
- procedure Resume_All_Tasks (Thread_Self : OS_Interface.Thread_Id) is
- C : Task_Id;
- Dummy : Boolean;
- pragma Unreferenced (Dummy);
-
- begin
- STPO.Lock_RTS;
- C := All_Tasks_List;
-
- while C /= null loop
- Dummy := STPO.Resume_Task (C, Thread_Self);
- C := C.Common.All_Tasks_Link;
- end loop;
-
- STPO.Unlock_RTS;
- end Resume_All_Tasks;
-
- ---------------
- -- Set_Trace --
- ---------------
-
- procedure Set_Trace (Flag : Character; Value : Boolean := True) is
- begin
- Trace_On (Flag) := Value;
- end Set_Trace;
-
- --------------------
- -- Set_User_State --
- --------------------
-
- procedure Set_User_State (Value : Long_Integer) is
- begin
- STPO.Self.User_State := Value;
- end Set_User_State;
-
- --------------------
- -- Stop_All_Tasks --
- --------------------
-
- procedure Stop_All_Tasks is
- C : Task_Id;
-
- Dummy : Boolean;
- pragma Unreferenced (Dummy);
-
- begin
- STPO.Lock_RTS;
-
- C := All_Tasks_List;
- while C /= null loop
- Dummy := STPO.Stop_Task (C);
- C := C.Common.All_Tasks_Link;
- end loop;
-
- STPO.Unlock_RTS;
- end Stop_All_Tasks;
-
- ----------------------------
- -- Stop_All_Tasks_Handler --
- ----------------------------
-
- procedure Stop_All_Tasks_Handler is
- begin
- STPO.Stop_All_Tasks;
- end Stop_All_Tasks_Handler;
-
- -----------------------
- -- Suspend_All_Tasks --
- -----------------------
-
- procedure Suspend_All_Tasks (Thread_Self : OS_Interface.Thread_Id) is
- C : Task_Id;
- Dummy : Boolean;
- pragma Unreferenced (Dummy);
-
- begin
- STPO.Lock_RTS;
- C := All_Tasks_List;
-
- while C /= null loop
- Dummy := STPO.Suspend_Task (C, Thread_Self);
- C := C.Common.All_Tasks_Link;
- end loop;
-
- STPO.Unlock_RTS;
- end Suspend_All_Tasks;
-
- ------------------------
- -- Task_Creation_Hook --
- ------------------------
-
- procedure Task_Creation_Hook (Thread : OS_Interface.Thread_Id) is
- pragma Inspection_Point (Thread);
- -- gdb needs to access the thread parameter in order to implement
- -- the multitask mode under VxWorks.
-
- begin
- null;
- end Task_Creation_Hook;
-
- ---------------------------
- -- Task_Termination_Hook --
- ---------------------------
-
- procedure Task_Termination_Hook is
- begin
- null;
- end Task_Termination_Hook;
-
- -----------
- -- Trace --
- -----------
-
- procedure Trace
- (Self_Id : Task_Id;
- Msg : String;
- Flag : Character;
- Other_Id : Task_Id := null)
- is
- begin
- if Trace_On (Flag) then
- Put (To_Integer (Self_Id)'Img &
- ':' & Flag & ':' &
- Self_Id.Common.Task_Image (1 .. Self_Id.Common.Task_Image_Len) &
- ':');
-
- if Other_Id /= null then
- Put (To_Integer (Other_Id)'Img & ':');
- end if;
-
- Put_Line (Msg);
- end if;
- end Trace;
-
- -----------
- -- Write --
- -----------
-
- procedure Write (Fd : Integer; S : String; Count : Integer) is
- Discard : Integer;
- pragma Unreferenced (Discard);
- begin
- Discard := System.CRTL.write (Fd, S (S'First)'Address, Count);
- -- Is it really right to ignore write errors here ???
- end Write;
-
-end System.Tasking.Debug;
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-23 11:52:22 +0000