+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNAT RUNTIME COMPONENTS --
--- --
--- G N A T . T H R E A D S --
--- --
--- S p e c --
--- --
--- $Revision: 1.1 $
--- --
--- Copyright (C) 1998-2000 Ada Core Technologies, 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 is maintained by Ada Core Technologies Inc (http://www.gnat.com). --
--- --
-------------------------------------------------------------------------------
-
--- This package provides facilities for creation of foreign threads for
--- use as Ada tasks. In order to execute general Ada code, the run-time
--- system must know about all tasks. This package allows foreign code,
--- e.g. a C program, to create a thread that the Ada run-time knows about.
-
-with System;
-
-package GNAT.Threads is
-
- type Void_Ptr is access all Integer;
-
- function Create_Thread
- (Code : System.Address; -- pointer
- Parm : Void_Ptr; -- pointer
- Size : Natural; -- int
- Prio : Integer) -- int
- return System.Address;
- pragma Export (C, Create_Thread, "__gnat_create_thread");
- -- Creates a thread with the given (Size) stack size in bytes, and
- -- the given (Prio) priority. The task will execute a call to the
- -- procedure whose address is given by Code. This procedure has
- -- the prototype
- --
- -- void thread_code (void *id, void *parm);
- --
- -- where id is the id of the created task, and parm is the parameter
- -- passed to Create_Thread. The called procedure is the body of the
- -- code for the task, the task will be automatically terminated when
- -- the procedure returns.
- --
- -- This function returns the Ada Id of the created task that can then be
- -- used as a parameter to the procedures below.
- --
- -- C declaration:
- --
- -- extern void *__gnat_create_thread
- -- (void (*code)(void *, void *), void *parm, int size, int prio);
-
- procedure Destroy_Thread (Id : System.Address);
- pragma Export (C, Destroy_Thread, "__gnat_destroy_thread");
- -- This procedure may be used to prematurely abort the created thread.
- -- The value Id is the value that was passed to the thread code procedure
- -- at activation time.
- --
- -- C declaration:
- --
- -- extern void __gnat_destroy_thread (void *id);
-
- procedure Get_Thread (Id : System.Address; Thread : System.Address);
- pragma Export (C, Get_Thread, "__gnat_get_thread");
- -- This procedure is used to retrieve the thread id of a given task.
- -- The value Id is the value that was passed to the thread code procedure
- -- at activation time.
- -- Thread is a pointer to a thread id that will be updated by this
- -- procedure.
- --
- -- C declaration:
- --
- -- extern void __gnat_get_thread (void *id, pthread_t *thread);
-
-end GNAT.Threads;
projects / msp430-gcc.git / blobdiff