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Diffstat (limited to 'gcc-4.2.1/gcc/ada/s-tarest.ads')
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diff --git a/gcc-4.2.1/gcc/ada/s-tarest.ads b/gcc-4.2.1/gcc/ada/s-tarest.ads deleted file mode 100644 index 3a6b7c5fe..000000000 --- a/gcc-4.2.1/gcc/ada/s-tarest.ads +++ /dev/null @@ -1,227 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- --- -- --- S Y S T E M . T A S K I N G . R E S T R I C T E D . S T A G E S -- --- -- --- S p e c -- --- -- --- 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 simplified version of the System.Tasking.Stages package, --- intended to be used in a restricted run time. - --- This package represents the high level tasking interface used by the --- compiler to expand Ada 95 tasking constructs into simpler run time calls --- (aka GNARLI, GNU Ada Run-time Library Interface) - --- Note: the compiler generates direct calls to this interface, via Rtsfind. --- Any changes to this interface may require corresponding compiler changes --- in exp_ch9.adb and possibly exp_ch7.adb - --- The restricted GNARLI is also composed of System.Protected_Objects and --- System.Protected_Objects.Single_Entry - -with System.Task_Info; --- used for Task_Info_Type - -with System.Parameters; --- used for Size_Type - -package System.Tasking.Restricted.Stages is - pragma Elaborate_Body; - - --------------------------------- - -- Compiler Interface (GNARLI) -- - --------------------------------- - - -- The compiler will expand in the GNAT tree the following construct: - - -- task type T (Discr : Integer); - - -- task body T is - -- ...declarations, possibly some controlled... - -- begin - -- ...B...; - -- end T; - - -- T1 : T (1); - - -- as follows: - - -- task type t (discr : integer); - -- tE : aliased boolean := false; - -- tZ : size_type := unspecified_size; - - -- type tV (discr : integer) is limited record - -- _task_id : task_id; - -- _atcb : aliased system__tasking__ada_task_control_block (0); - -- end record; - - -- procedure tB (_task : access tV); - -- freeze tV [ - -- procedure tVIP (_init : in out tV; _master : master_id; - -- _chain : in out activation_chain; _task_name : in string; - -- discr : integer) is - -- begin - -- _init.discr := discr; - -- _init._task_id := null; - -- system__tasking__ada_task_control_blockIP (_init._atcb, 0); - -- _init._task_id := _init._atcb'unchecked_access; - -- create_restricted_task (unspecified_priority, tZ, - -- unspecified_task_info, task_procedure_access!(tB'address), - -- _init'address, tE'unchecked_access, _chain, _task_name, _init. - -- _task_id); - -- return; - -- end tVIP; - - -- _chain : aliased activation_chain; - -- activation_chainIP (_chain); - - -- procedure tB (_task : access tV) is - -- discr : integer renames _task.discr; - - -- procedure _clean is - -- begin - -- complete_restricted_task; - -- finalize_list (F14b); - -- return; - -- end _clean; - - -- begin - -- ...declarations... - -- complete_restricted_activation; - -- ...B...; - -- return; - -- at end - -- _clean; - -- end tB; - - -- tE := true; - -- t1 : t (1); - -- t1S : constant String := "t1"; - -- tIP (t1, 3, _chain, t1S, 1); - - -- activate_restricted_tasks (_chain'unchecked_access); - - procedure Create_Restricted_Task - (Priority : Integer; - Stack_Address : System.Address; - Size : System.Parameters.Size_Type; - Task_Info : System.Task_Info.Task_Info_Type; - State : Task_Procedure_Access; - Discriminants : System.Address; - Elaborated : Access_Boolean; - Chain : in out Activation_Chain; - Task_Image : String; - Created_Task : Task_Id); - -- Compiler interface only. Do not call from within the RTS. - -- This must be called to create a new task. - -- - -- Priority is the task's priority (assumed to be in the - -- System.Any_Priority'Range) - -- - -- Stack_Address is the start address of the stack associated to the - -- task, in case it has been preallocated by the compiler; it is equal - -- to Null_Address when the stack needs to be allocated by the - -- underlying operating system. - -- - -- Size is the stack size of the task to create - -- - -- Task_Info is the task info associated with the created task, or - -- Unspecified_Task_Info if none. - -- - -- State is the compiler generated task's procedure body - -- - -- Discriminants is a pointer to a limited record whose discriminants - -- are those of the task to create. This parameter should be passed as - -- the single argument to State. - -- - -- Elaborated is a pointer to a Boolean that must be set to true on exit - -- if the task could be sucessfully elaborated. - -- - -- Chain is a linked list of task that needs to be created. On exit, - -- Created_Task.Activation_Link will be Chain.T_ID, and Chain.T_ID - -- will be Created_Task (e.g the created task will be linked at the front - -- of Chain). - -- - -- Task_Image is a string created by the compiler that the - -- run time can store to ease the debugging and the - -- Ada.Task_Identification facility. - -- - -- Created_Task is the resulting task. - -- - -- This procedure can raise Storage_Error if the task creation fails - - procedure Activate_Restricted_Tasks - (Chain_Access : Activation_Chain_Access); - -- Compiler interface only. Do not call from within the RTS. - -- This must be called by the creator of a chain of one or more new tasks, - -- to activate them. The chain is a linked list that up to this point is - -- only known to the task that created them, though the individual tasks - -- are already in the All_Tasks_List. - -- - -- The compiler builds the chain in LIFO order (as a stack). Another - -- version of this procedure had code to reverse the chain, so as to - -- activate the tasks in the order of declaration. This might be nice, but - -- it is not needed if priority-based scheduling is supported, since all - -- the activated tasks synchronize on the activators lock before they - -- start activating and so they should start activating in priority order. - - procedure Complete_Restricted_Activation; - -- Compiler interface only. Do not call from within the RTS. - -- This should be called from the task body at the end of - -- the elaboration code for its declarative part. - -- Decrement the count of tasks to be activated by the activator and - -- wake it up so it can check to see if all tasks have been activated. - -- Except for the environment task, which should never call this procedure, - -- T.Activator should only be null iff T has completed activation. - - procedure Complete_Restricted_Task; - -- Compiler interface only. Do not call from within the RTS. - -- This should be called from an implicit at-end handler - -- associated with the task body, when it completes. - -- From this point, the current task will become not callable. - -- If the current task have not completed activation, this should be done - -- now in order to wake up the activator (the environment task). - - function Restricted_Terminated (T : Task_Id) return Boolean; - -- Compiler interface only. Do not call from within the RTS. - -- This is called by the compiler to implement the 'Terminated attribute. - -- - -- source code: - -- T1'Terminated - -- - -- code expansion: - -- restricted_terminated (t1._task_id) - - procedure Finalize_Global_Tasks; - -- This is needed to support the compiler interface; it will only be called - -- by the Environment task in the binder generated file (by adafinal). - -- Instead, it will cause the Environment to block forever, since none of - -- the dependent tasks are expected to terminate - -end System.Tasking.Restricted.Stages; |