| ------------------------------------------------------------------------------ |
| -- -- |
| -- 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) 1992-2023, 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 is a no tasking version of this package |
| |
| -- This package contains all the GNULL primitives that interface directly with |
| -- the underlying OS. |
| |
| package body System.Task_Primitives.Operations is |
| |
| use System.Tasking; |
| use System.Parameters; |
| |
| pragma Warnings (Off); |
| -- Turn off warnings since so many unreferenced parameters |
| |
| -------------- |
| -- Specific -- |
| -------------- |
| |
| -- Package Specific contains target specific routines, and the body of |
| -- this package is target specific. |
| |
| package Specific is |
| procedure Set (Self_Id : Task_Id); |
| pragma Inline (Set); |
| -- Set the self id for the current task |
| end Specific; |
| |
| package body Specific is |
| |
| --------- |
| -- Set -- |
| --------- |
| |
| procedure Set (Self_Id : Task_Id) is |
| begin |
| null; |
| end Set; |
| end Specific; |
| |
| ---------------------------------- |
| -- ATCB allocation/deallocation -- |
| ---------------------------------- |
| |
| package body ATCB_Allocation is separate; |
| -- The body of this package is shared across several targets |
| |
| ---------------- |
| -- Abort_Task -- |
| ---------------- |
| |
| procedure Abort_Task (T : Task_Id) is |
| begin |
| null; |
| end Abort_Task; |
| |
| ---------------- |
| -- Check_Exit -- |
| ---------------- |
| |
| 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; |
| |
| ------------------- |
| -- Continue_Task -- |
| ------------------- |
| |
| function Continue_Task (T : ST.Task_Id) return Boolean is |
| begin |
| return False; |
| end Continue_Task; |
| |
| ------------------- |
| -- 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 : not null access Lock) is |
| begin |
| null; |
| end Finalize_Lock; |
| |
| procedure Finalize_Lock (L : not null 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 |
| raise Program_Error with "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 : not null access Lock) |
| is |
| begin |
| null; |
| end Initialize_Lock; |
| |
| procedure Initialize_Lock |
| (L : not null 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; |
| |
| --------------- |
| -- Read_Lock -- |
| --------------- |
| |
| procedure Read_Lock |
| (L : not null 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_Ceiling -- |
| ----------------- |
| |
| procedure Set_Ceiling |
| (L : not null access Lock; |
| Prio : System.Any_Priority) |
| is |
| begin |
| null; |
| end Set_Ceiling; |
| |
| --------------- |
| -- 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_Task_Affinity -- |
| ----------------------- |
| |
| procedure Set_Task_Affinity (T : ST.Task_Id) is |
| begin |
| null; |
| end Set_Task_Affinity; |
| |
| -------------- |
| -- 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; |
| |
| -------------------- |
| -- Stop_All_Tasks -- |
| -------------------- |
| |
| procedure Stop_All_Tasks is |
| begin |
| null; |
| end Stop_All_Tasks; |
| |
| --------------- |
| -- Stop_Task -- |
| --------------- |
| |
| function Stop_Task (T : ST.Task_Id) return Boolean is |
| pragma Unreferenced (T); |
| begin |
| return False; |
| end Stop_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 : not null access Lock) is |
| begin |
| null; |
| end Unlock; |
| |
| procedure Unlock |
| (L : not null 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 : not null access Lock; |
| Ceiling_Violation : out Boolean) |
| is |
| begin |
| Ceiling_Violation := False; |
| end Write_Lock; |
| |
| procedure Write_Lock |
| (L : not null 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; |
