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Diffstat (limited to 'lang/gcc3-ada/files/5netbsdtasinf.ads')
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diff --git a/lang/gcc3-ada/files/5netbsdtasinf.ads b/lang/gcc3-ada/files/5netbsdtasinf.ads deleted file mode 100644 index fdd93c95beb..00000000000 --- a/lang/gcc3-ada/files/5netbsdtasinf.ads +++ /dev/null @@ -1,143 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT COMPILER COMPONENTS -- --- -- --- S Y S T E M . T A S K _ I N F O -- --- -- --- S p e c -- --- -- --- -- --- Copyright (C) 1992-2000 Free Software Foundation, Inc. -- --- -- --- GNAT 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. 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. See the GNU General Public License -- --- for more details. You should have received a copy of the GNU General -- --- Public License distributed with GNAT; see file COPYING. If not, write -- --- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- --- MA 02111-1307, 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. -- --- -- --- GNAT was originally developed by the GNAT team at New York University. -- --- Extensive contributions were provided by Ada Core Technologies Inc. -- --- -- ------------------------------------------------------------------------------- - --- This package contains the definitions and routines associated with the --- implementation of the Task_Info pragma. - --- This is the NetBSD (native) version of this module. - -with System.OS_Interface; -with Unchecked_Deallocation; -package System.Task_Info is -pragma Elaborate_Body; --- To ensure that a body is allowed - - ----------------------------------------------------- - -- Binding of Tasks to LWPs and LWPs to processors -- - ----------------------------------------------------- - - -- The NetBSD implementation of the GNU Low-Level Interface (GNULLI) - -- implements each Ada task as a NetBSD thread. The NetBSD thread - -- library distributes threads across one or more LWPs (Light Weight - -- Process) that are members of the same process. NetBSD distributes - -- processes and LWPs across the available CPUs on a given machine. The - -- pragma Task_Info provides the mechanism to control the distribution - -- of tasks to LWPs, and LWPs to processors. - - -- Each thread has a number of attributes that dictate it's scheduling. - -- These attributes are: - -- - -- New_LWP: whether a new LWP is created for this thread. - -- - -- Bound_To_LWP: whether the thread is bound to a specific LWP - -- for its entire lifetime. - -- - -- CPU: the CPU number associated to the LWP - -- - - -- The Task_Info pragma: - - -- pragma Task_Info (EXPRESSION); - - -- allows the specification on a task by task basis of a value of type - -- System.Task_Info.Task_Info_Type to be passed to a task when it is - -- created. The specification of this type, and the effect on the task - -- that is created is target dependent. - - -- The Task_Info pragma appears within a task definition (compare the - -- definition and implementation of pragma Priority). If no such pragma - -- appears, then the value Task_Info_Unspecified is passed. If a pragma - -- is present, then it supplies an alternative value. If the argument of - -- the pragma is a discriminant reference, then the value can be set on - -- a task by task basis by supplying the appropriate discriminant value. - - -- Note that this means that the type used for Task_Info_Type must be - -- suitable for use as a discriminant (i.e. a scalar or access type). - - ----------------------- - -- Thread Attributes -- - ----------------------- - - subtype CPU_Number is System.OS_Interface.processorid_t; - - CPU_UNCHANGED : constant CPU_Number := System.OS_Interface.PBIND_QUERY; - -- Do not bind the LWP to a specific processor - - ANY_CPU : constant CPU_Number := System.OS_Interface.PBIND_NONE; - -- Bind the LWP to any processor - - Invalid_CPU_Number : exception; - - type Thread_Attributes (New_LWP : Boolean) is record - Bound_To_LWP : Boolean := True; - case New_LWP is - when False => - null; - when True => - CPU : CPU_Number := CPU_UNCHANGED; - end case; - end record; - - Default_Thread_Attributes : constant Thread_Attributes := (False, True); - - function Unbound_Thread_Attributes - return Thread_Attributes; - - function Bound_Thread_Attributes - return Thread_Attributes; - - function Bound_Thread_Attributes (CPU : CPU_Number) - return Thread_Attributes; - - type Task_Info_Type is access all Thread_Attributes; - - function New_Unbound_Thread_Attributes - return Task_Info_Type; - - function New_Bound_Thread_Attributes - return Task_Info_Type; - - function New_Bound_Thread_Attributes (CPU : CPU_Number) - return Task_Info_Type; - - type Task_Image_Type is access String; - -- Used to generate a meaningful identifier for tasks that are variables - -- and components of variables. - - procedure Free_Task_Image is new - Unchecked_Deallocation (String, Task_Image_Type); - - Unspecified_Task_Info : constant Task_Info_Type := null; - -end System.Task_Info; |