| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- |
| -- -- |
| -- S Y S T E M . T A S K _ P R I M I T I V E S . O P E R A T I O N S -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 1992-2005, 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 2, or (at your option) any later ver- -- |
| -- sion. GNARL 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. See the GNU General Public License -- |
| -- for more details. You should have received a copy of the GNU General -- |
| -- Public License distributed with GNARL; see file COPYING. If not, write -- |
| -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- |
| -- Boston, MA 02110-1301, USA. -- |
| -- -- |
| -- As a special exception, if other files instantiate generics from this -- |
| -- unit, or you link this unit with other files to produce an executable, -- |
| -- this unit does not by itself cause the resulting executable to be -- |
| -- covered by the GNU General Public License. This exception does not -- |
| -- however invalidate any other reasons why the executable file might be -- |
| -- covered by the GNU Public License. -- |
| -- -- |
| -- GNARL was developed by the GNARL team at Florida State University. -- |
| -- Extensive contributions were provided by Ada Core Technologies, Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This is a no tasking version of this package |
| |
| -- This package contains all the GNULL primitives that interface directly |
| -- with the underlying OS. |
| |
| pragma Polling (Off); |
| -- Turn off polling, we do not want ATC polling to take place during |
| -- tasking operations. It causes infinite loops and other problems. |
| |
| with System.Error_Reporting; |
| -- used for Shutdown |
| |
| package body System.Task_Primitives.Operations is |
| |
| use System.Tasking; |
| use System.Parameters; |
| |
| pragma Warnings (Off); |
| -- Turn off warnings since so many unreferenced parameters |
| |
| ---------------- |
| -- Abort_Task -- |
| ---------------- |
| |
| procedure Abort_Task (T : Task_Id) is |
| begin |
| null; |
| end Abort_Task; |
| |
| ---------------- |
| -- Check_Exit -- |
| ---------------- |
| |
| -- Dummy version |
| |
| function Check_Exit (Self_ID : ST.Task_Id) return Boolean is |
| begin |
| return True; |
| end Check_Exit; |
| |
| -------------------- |
| -- Check_No_Locks -- |
| -------------------- |
| |
| function Check_No_Locks (Self_ID : ST.Task_Id) return Boolean is |
| begin |
| return True; |
| end Check_No_Locks; |
| |
| ------------------- |
| -- Current_State -- |
| ------------------- |
| |
| function Current_State (S : Suspension_Object) return Boolean is |
| begin |
| return False; |
| end Current_State; |
| |
| ---------------------- |
| -- Environment_Task -- |
| ---------------------- |
| |
| function Environment_Task return Task_Id is |
| begin |
| return null; |
| end Environment_Task; |
| |
| ----------------- |
| -- Create_Task -- |
| ----------------- |
| |
| procedure Create_Task |
| (T : Task_Id; |
| Wrapper : System.Address; |
| Stack_Size : System.Parameters.Size_Type; |
| Priority : System.Any_Priority; |
| Succeeded : out Boolean) |
| is |
| begin |
| Succeeded := False; |
| end Create_Task; |
| |
| ---------------- |
| -- Enter_Task -- |
| ---------------- |
| |
| procedure Enter_Task (Self_ID : Task_Id) is |
| begin |
| null; |
| end Enter_Task; |
| |
| --------------- |
| -- Exit_Task -- |
| --------------- |
| |
| procedure Exit_Task is |
| begin |
| null; |
| end Exit_Task; |
| |
| -------------- |
| -- Finalize -- |
| -------------- |
| |
| procedure Finalize (S : in out Suspension_Object) is |
| begin |
| null; |
| end Finalize; |
| |
| ------------------- |
| -- Finalize_Lock -- |
| ------------------- |
| |
| procedure Finalize_Lock (L : access Lock) is |
| begin |
| null; |
| end Finalize_Lock; |
| |
| procedure Finalize_Lock (L : access RTS_Lock) is |
| begin |
| null; |
| end Finalize_Lock; |
| |
| ------------------ |
| -- Finalize_TCB -- |
| ------------------ |
| |
| procedure Finalize_TCB (T : Task_Id) is |
| begin |
| null; |
| end Finalize_TCB; |
| |
| ------------------ |
| -- Get_Priority -- |
| ------------------ |
| |
| function Get_Priority (T : Task_Id) return System.Any_Priority is |
| begin |
| return 0; |
| end Get_Priority; |
| |
| -------------------- |
| -- Get_Thread_Id -- |
| -------------------- |
| |
| function Get_Thread_Id (T : ST.Task_Id) return OSI.Thread_Id is |
| begin |
| return OSI.Thread_Id (T.Common.LL.Thread); |
| end Get_Thread_Id; |
| |
| ---------------- |
| -- Initialize -- |
| ---------------- |
| |
| procedure Initialize (Environment_Task : Task_Id) is |
| No_Tasking : Boolean; |
| begin |
| No_Tasking := |
| System.Error_Reporting.Shutdown |
| ("Tasking not implemented on this configuration"); |
| end Initialize; |
| |
| procedure Initialize (S : in out Suspension_Object) is |
| begin |
| null; |
| end Initialize; |
| |
| --------------------- |
| -- Initialize_Lock -- |
| --------------------- |
| |
| procedure Initialize_Lock |
| (Prio : System.Any_Priority; |
| L : access Lock) |
| is |
| begin |
| null; |
| end Initialize_Lock; |
| |
| procedure Initialize_Lock (L : access RTS_Lock; Level : Lock_Level) is |
| begin |
| null; |
| end Initialize_Lock; |
| |
| -------------------- |
| -- Initialize_TCB -- |
| -------------------- |
| |
| procedure Initialize_TCB (Self_ID : Task_Id; Succeeded : out Boolean) is |
| begin |
| Succeeded := False; |
| end Initialize_TCB; |
| |
| ------------------- |
| -- Is_Valid_Task -- |
| ------------------- |
| |
| function Is_Valid_Task return Boolean is |
| begin |
| return False; |
| end Is_Valid_Task; |
| |
| -------------- |
| -- Lock_RTS -- |
| -------------- |
| |
| procedure Lock_RTS is |
| begin |
| null; |
| end Lock_RTS; |
| |
| --------------------- |
| -- Monotonic_Clock -- |
| --------------------- |
| |
| function Monotonic_Clock return Duration is |
| begin |
| return 0.0; |
| end Monotonic_Clock; |
| |
| -------------- |
| -- New_ATCB -- |
| -------------- |
| |
| function New_ATCB (Entry_Num : Task_Entry_Index) return Task_Id is |
| begin |
| return new Ada_Task_Control_Block (Entry_Num); |
| end New_ATCB; |
| |
| --------------- |
| -- Read_Lock -- |
| --------------- |
| |
| procedure Read_Lock (L : access Lock; Ceiling_Violation : out Boolean) is |
| begin |
| Ceiling_Violation := False; |
| end Read_Lock; |
| |
| ----------------------------- |
| -- Register_Foreign_Thread -- |
| ----------------------------- |
| |
| function Register_Foreign_Thread return Task_Id is |
| begin |
| return null; |
| end Register_Foreign_Thread; |
| |
| ----------------- |
| -- Resume_Task -- |
| ----------------- |
| |
| function Resume_Task |
| (T : ST.Task_Id; |
| Thread_Self : OSI.Thread_Id) return Boolean |
| is |
| begin |
| return False; |
| end Resume_Task; |
| |
| ------------------- |
| -- RT_Resolution -- |
| ------------------- |
| |
| function RT_Resolution return Duration is |
| begin |
| return 10#1.0#E-6; |
| end RT_Resolution; |
| |
| ---------- |
| -- Self -- |
| ---------- |
| |
| function Self return Task_Id is |
| begin |
| return Null_Task; |
| end Self; |
| |
| --------------- |
| -- Set_False -- |
| --------------- |
| |
| procedure Set_False (S : in out Suspension_Object) is |
| begin |
| null; |
| end Set_False; |
| |
| ------------------ |
| -- Set_Priority -- |
| ------------------ |
| |
| procedure Set_Priority |
| (T : Task_Id; |
| Prio : System.Any_Priority; |
| Loss_Of_Inheritance : Boolean := False) |
| is |
| begin |
| null; |
| end Set_Priority; |
| |
| -------------- |
| -- Set_True -- |
| -------------- |
| |
| procedure Set_True (S : in out Suspension_Object) is |
| begin |
| null; |
| end Set_True; |
| |
| ----------- |
| -- Sleep -- |
| ----------- |
| |
| procedure Sleep (Self_ID : Task_Id; Reason : System.Tasking.Task_States) is |
| begin |
| null; |
| end Sleep; |
| |
| ----------------- |
| -- Stack_Guard -- |
| ----------------- |
| |
| procedure Stack_Guard (T : ST.Task_Id; On : Boolean) is |
| begin |
| null; |
| end Stack_Guard; |
| |
| ------------------ |
| -- Suspend_Task -- |
| ------------------ |
| |
| function Suspend_Task |
| (T : ST.Task_Id; |
| Thread_Self : OSI.Thread_Id) return Boolean |
| is |
| begin |
| return False; |
| end Suspend_Task; |
| |
| ------------------------ |
| -- Suspend_Until_True -- |
| ------------------------ |
| |
| procedure Suspend_Until_True (S : in out Suspension_Object) is |
| begin |
| null; |
| end Suspend_Until_True; |
| |
| ----------------- |
| -- Timed_Delay -- |
| ----------------- |
| |
| procedure Timed_Delay |
| (Self_ID : Task_Id; |
| Time : Duration; |
| Mode : ST.Delay_Modes) |
| is |
| begin |
| null; |
| end Timed_Delay; |
| |
| ----------------- |
| -- Timed_Sleep -- |
| ----------------- |
| |
| procedure Timed_Sleep |
| (Self_ID : Task_Id; |
| Time : Duration; |
| Mode : ST.Delay_Modes; |
| Reason : System.Tasking.Task_States; |
| Timedout : out Boolean; |
| Yielded : out Boolean) |
| is |
| begin |
| Timedout := False; |
| Yielded := False; |
| end Timed_Sleep; |
| |
| ------------ |
| -- Unlock -- |
| ------------ |
| |
| procedure Unlock (L : access Lock) is |
| begin |
| null; |
| end Unlock; |
| |
| procedure Unlock (L : access RTS_Lock; Global_Lock : Boolean := False) is |
| begin |
| null; |
| end Unlock; |
| |
| procedure Unlock (T : Task_Id) is |
| begin |
| null; |
| end Unlock; |
| |
| ---------------- |
| -- Unlock_RTS -- |
| ---------------- |
| |
| procedure Unlock_RTS is |
| begin |
| null; |
| end Unlock_RTS; |
| ------------ |
| -- Wakeup -- |
| ------------ |
| |
| procedure Wakeup (T : Task_Id; Reason : System.Tasking.Task_States) is |
| begin |
| null; |
| end Wakeup; |
| |
| ---------------- |
| -- Write_Lock -- |
| ---------------- |
| |
| procedure Write_Lock (L : access Lock; Ceiling_Violation : out Boolean) is |
| begin |
| Ceiling_Violation := False; |
| end Write_Lock; |
| |
| procedure Write_Lock |
| (L : access RTS_Lock; |
| Global_Lock : Boolean := False) |
| is |
| begin |
| null; |
| end Write_Lock; |
| |
| procedure Write_Lock (T : Task_Id) is |
| begin |
| null; |
| end Write_Lock; |
| |
| ----------- |
| -- Yield -- |
| ----------- |
| |
| procedure Yield (Do_Yield : Boolean := True) is |
| begin |
| null; |
| end Yield; |
| |
| end System.Task_Primitives.Operations; |
