607 lines
17 KiB
Ada
607 lines
17 KiB
Ada
------------------------------------------------------------------------------
|
|
-- --
|
|
-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
|
|
-- --
|
|
-- S Y S T E M . O S _ I N T E R F A C E --
|
|
-- --
|
|
-- B o d y --
|
|
-- --
|
|
-- Copyright (C) 1999-2006, 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 LynxOS (Native) version of this package
|
|
|
|
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.
|
|
|
|
package body System.OS_Interface is
|
|
|
|
use Interfaces.C;
|
|
|
|
-------------------
|
|
-- clock_gettime --
|
|
-------------------
|
|
|
|
function clock_gettime
|
|
(clock_id : clockid_t;
|
|
tp : access timespec)
|
|
return int
|
|
is
|
|
function clock_gettime_base
|
|
(clock_id : clockid_t;
|
|
tp : access timespec)
|
|
return int;
|
|
pragma Import (C, clock_gettime_base, "clock_gettime");
|
|
|
|
begin
|
|
if clock_gettime_base (clock_id, tp) /= 0 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end clock_gettime;
|
|
|
|
-----------------
|
|
-- To_Duration --
|
|
-----------------
|
|
|
|
function To_Duration (TS : timespec) return Duration is
|
|
begin
|
|
return Duration (TS.tv_sec) + Duration (TS.tv_nsec) / 10#1#E9;
|
|
end To_Duration;
|
|
|
|
function To_Duration (TV : struct_timeval) return Duration is
|
|
begin
|
|
return Duration (TV.tv_sec) + Duration (TV.tv_usec) / 10#1#E6;
|
|
end To_Duration;
|
|
|
|
------------------------
|
|
-- To_Target_Priority --
|
|
------------------------
|
|
|
|
function To_Target_Priority
|
|
(Prio : System.Any_Priority) return Interfaces.C.int
|
|
is
|
|
begin
|
|
return Interfaces.C.int (Prio);
|
|
end To_Target_Priority;
|
|
|
|
-----------------
|
|
-- To_Timespec --
|
|
-----------------
|
|
|
|
function To_Timespec (D : Duration) return timespec is
|
|
S : time_t;
|
|
F : Duration;
|
|
|
|
begin
|
|
S := time_t (Long_Long_Integer (D));
|
|
F := D - Duration (S);
|
|
|
|
-- If F has negative value due to a round-up, adjust for positive F
|
|
-- value.
|
|
|
|
if F < 0.0 then
|
|
S := S - 1;
|
|
F := F + 1.0;
|
|
end if;
|
|
|
|
return timespec'(tv_sec => S,
|
|
tv_nsec => long (Long_Long_Integer (F * 10#1#E9)));
|
|
end To_Timespec;
|
|
|
|
----------------
|
|
-- To_Timeval --
|
|
----------------
|
|
|
|
function To_Timeval (D : Duration) return struct_timeval is
|
|
S : time_t;
|
|
F : Duration;
|
|
|
|
begin
|
|
S := time_t (Long_Long_Integer (D));
|
|
F := D - Duration (S);
|
|
|
|
-- If F has negative value due to a round-up, adjust for positive F
|
|
-- value.
|
|
|
|
if F < 0.0 then
|
|
S := S - 1;
|
|
F := F + 1.0;
|
|
end if;
|
|
|
|
return struct_timeval'(tv_sec => S,
|
|
tv_usec => time_t (Long_Long_Integer (F * 10#1#E6)));
|
|
end To_Timeval;
|
|
|
|
-------------------------
|
|
-- POSIX.1c Section 3 --
|
|
-------------------------
|
|
|
|
function sigwait
|
|
(set : access sigset_t;
|
|
sig : access Signal)
|
|
return int
|
|
is
|
|
function sigwait_base
|
|
(set : access sigset_t;
|
|
value : System.Address)
|
|
return Signal;
|
|
pragma Import (C, sigwait_base, "sigwait");
|
|
|
|
begin
|
|
sig.all := sigwait_base (set, Null_Address);
|
|
|
|
if sig.all = -1 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end sigwait;
|
|
|
|
--------------------------
|
|
-- POSIX.1c Section 11 --
|
|
--------------------------
|
|
|
|
-- For all the following functions, LynxOS threads has the POSIX Draft 4
|
|
-- begavior; it sets errno but the standard Posix requires it to be
|
|
-- returned.
|
|
|
|
function pthread_mutexattr_init
|
|
(attr : access pthread_mutexattr_t)
|
|
return int
|
|
is
|
|
function pthread_mutexattr_create
|
|
(attr : access pthread_mutexattr_t)
|
|
return int;
|
|
pragma Import (C, pthread_mutexattr_create, "pthread_mutexattr_create");
|
|
|
|
begin
|
|
if pthread_mutexattr_create (attr) /= 0 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_mutexattr_init;
|
|
|
|
function pthread_mutexattr_destroy
|
|
(attr : access pthread_mutexattr_t)
|
|
return int
|
|
is
|
|
function pthread_mutexattr_delete
|
|
(attr : access pthread_mutexattr_t)
|
|
return int;
|
|
pragma Import (C, pthread_mutexattr_delete, "pthread_mutexattr_delete");
|
|
|
|
begin
|
|
if pthread_mutexattr_delete (attr) /= 0 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_mutexattr_destroy;
|
|
|
|
function pthread_mutex_init
|
|
(mutex : access pthread_mutex_t;
|
|
attr : access pthread_mutexattr_t)
|
|
return int
|
|
is
|
|
function pthread_mutex_init_base
|
|
(mutex : access pthread_mutex_t;
|
|
attr : pthread_mutexattr_t)
|
|
return int;
|
|
pragma Import (C, pthread_mutex_init_base, "pthread_mutex_init");
|
|
|
|
begin
|
|
if pthread_mutex_init_base (mutex, attr.all) /= 0 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_mutex_init;
|
|
|
|
function pthread_mutex_destroy
|
|
(mutex : access pthread_mutex_t)
|
|
return int
|
|
is
|
|
function pthread_mutex_destroy_base
|
|
(mutex : access pthread_mutex_t)
|
|
return int;
|
|
pragma Import (C, pthread_mutex_destroy_base, "pthread_mutex_destroy");
|
|
|
|
begin
|
|
if pthread_mutex_destroy_base (mutex) /= 0 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_mutex_destroy;
|
|
|
|
function pthread_mutex_lock
|
|
(mutex : access pthread_mutex_t)
|
|
return int
|
|
is
|
|
function pthread_mutex_lock_base
|
|
(mutex : access pthread_mutex_t)
|
|
return int;
|
|
pragma Import (C, pthread_mutex_lock_base, "pthread_mutex_lock");
|
|
|
|
begin
|
|
if pthread_mutex_lock_base (mutex) /= 0 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_mutex_lock;
|
|
|
|
function pthread_mutex_unlock
|
|
(mutex : access pthread_mutex_t)
|
|
return int
|
|
is
|
|
function pthread_mutex_unlock_base
|
|
(mutex : access pthread_mutex_t)
|
|
return int;
|
|
pragma Import (C, pthread_mutex_unlock_base, "pthread_mutex_unlock");
|
|
|
|
begin
|
|
if pthread_mutex_unlock_base (mutex) /= 0 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_mutex_unlock;
|
|
|
|
function pthread_condattr_init
|
|
(attr : access pthread_condattr_t)
|
|
return int
|
|
is
|
|
function pthread_condattr_create
|
|
(attr : access pthread_condattr_t)
|
|
return int;
|
|
pragma Import (C, pthread_condattr_create, "pthread_condattr_create");
|
|
|
|
begin
|
|
if pthread_condattr_create (attr) /= 0 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_condattr_init;
|
|
|
|
function pthread_condattr_destroy
|
|
(attr : access pthread_condattr_t)
|
|
return int
|
|
is
|
|
function pthread_condattr_delete
|
|
(attr : access pthread_condattr_t)
|
|
return int;
|
|
pragma Import (C, pthread_condattr_delete, "pthread_condattr_delete");
|
|
|
|
begin
|
|
if pthread_condattr_delete (attr) /= 0 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_condattr_destroy;
|
|
|
|
function pthread_cond_init
|
|
(cond : access pthread_cond_t;
|
|
attr : access pthread_condattr_t)
|
|
return int
|
|
is
|
|
function pthread_cond_init_base
|
|
(cond : access pthread_cond_t;
|
|
attr : pthread_condattr_t)
|
|
return int;
|
|
pragma Import (C, pthread_cond_init_base, "pthread_cond_init");
|
|
|
|
begin
|
|
if pthread_cond_init_base (cond, attr.all) /= 0 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_cond_init;
|
|
|
|
function pthread_cond_destroy
|
|
(cond : access pthread_cond_t)
|
|
return int
|
|
is
|
|
function pthread_cond_destroy_base
|
|
(cond : access pthread_cond_t)
|
|
return int;
|
|
pragma Import (C, pthread_cond_destroy_base, "pthread_cond_destroy");
|
|
|
|
begin
|
|
if pthread_cond_destroy_base (cond) /= 0 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_cond_destroy;
|
|
|
|
function pthread_cond_signal
|
|
(cond : access pthread_cond_t)
|
|
return int
|
|
is
|
|
function pthread_cond_signal_base
|
|
(cond : access pthread_cond_t)
|
|
return int;
|
|
pragma Import (C, pthread_cond_signal_base, "pthread_cond_signal");
|
|
|
|
begin
|
|
if pthread_cond_signal_base (cond) /= 0 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_cond_signal;
|
|
|
|
function pthread_cond_wait
|
|
(cond : access pthread_cond_t;
|
|
mutex : access pthread_mutex_t)
|
|
return int
|
|
is
|
|
function pthread_cond_wait_base
|
|
(cond : access pthread_cond_t;
|
|
mutex : access pthread_mutex_t)
|
|
return int;
|
|
pragma Import (C, pthread_cond_wait_base, "pthread_cond_wait");
|
|
|
|
begin
|
|
if pthread_cond_wait_base (cond, mutex) /= 0 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_cond_wait;
|
|
|
|
function pthread_cond_timedwait
|
|
(cond : access pthread_cond_t;
|
|
mutex : access pthread_mutex_t;
|
|
reltime : access timespec) return int
|
|
is
|
|
function pthread_cond_timedwait_base
|
|
(cond : access pthread_cond_t;
|
|
mutex : access pthread_mutex_t;
|
|
reltime : access timespec) return int;
|
|
pragma Import (C, pthread_cond_timedwait_base, "pthread_cond_timedwait");
|
|
|
|
begin
|
|
if pthread_cond_timedwait_base (cond, mutex, reltime) /= 0 then
|
|
if errno = EAGAIN then
|
|
return ETIMEDOUT;
|
|
end if;
|
|
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_cond_timedwait;
|
|
|
|
--------------------------
|
|
-- POSIX.1c Section 13 --
|
|
--------------------------
|
|
|
|
function pthread_setschedparam
|
|
(thread : pthread_t;
|
|
policy : int;
|
|
param : access struct_sched_param)
|
|
return int
|
|
is
|
|
function pthread_setscheduler
|
|
(thread : pthread_t;
|
|
policy : int;
|
|
prio : int)
|
|
return int;
|
|
pragma Import (C, pthread_setscheduler, "pthread_setscheduler");
|
|
|
|
begin
|
|
if pthread_setscheduler (thread, policy, param.sched_priority) = -1 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_setschedparam;
|
|
|
|
function pthread_mutexattr_setprotocol
|
|
(attr : access pthread_mutexattr_t;
|
|
protocol : int)
|
|
return int
|
|
is
|
|
pragma Unreferenced (attr, protocol);
|
|
begin
|
|
return 0;
|
|
end pthread_mutexattr_setprotocol;
|
|
|
|
function pthread_mutexattr_setprioceiling
|
|
(attr : access pthread_mutexattr_t;
|
|
prioceiling : int)
|
|
return int
|
|
is
|
|
pragma Unreferenced (attr, prioceiling);
|
|
begin
|
|
return 0;
|
|
end pthread_mutexattr_setprioceiling;
|
|
|
|
function pthread_attr_setscope
|
|
(attr : access pthread_attr_t;
|
|
contentionscope : int)
|
|
return int
|
|
is
|
|
pragma Unreferenced (attr, contentionscope);
|
|
begin
|
|
return 0;
|
|
end pthread_attr_setscope;
|
|
|
|
function sched_yield return int is
|
|
procedure pthread_yield;
|
|
pragma Import (C, pthread_yield, "pthread_yield");
|
|
|
|
begin
|
|
pthread_yield;
|
|
return 0;
|
|
end sched_yield;
|
|
|
|
-----------------------------
|
|
-- P1003.1c - Section 16 --
|
|
-----------------------------
|
|
|
|
function pthread_attr_setdetachstate
|
|
(attr : access pthread_attr_t;
|
|
detachstate : int)
|
|
return int
|
|
is
|
|
pragma Unreferenced (attr, detachstate);
|
|
begin
|
|
return 0;
|
|
end pthread_attr_setdetachstate;
|
|
|
|
function pthread_create
|
|
(thread : access pthread_t;
|
|
attributes : access pthread_attr_t;
|
|
start_routine : Thread_Body;
|
|
arg : System.Address)
|
|
return int
|
|
is
|
|
-- The LynxOS pthread_create doesn't seems to work.
|
|
-- Workaround : We're using st_new instead.
|
|
--
|
|
-- function pthread_create_base
|
|
-- (thread : access pthread_t;
|
|
-- attributes : pthread_attr_t;
|
|
-- start_routine : Thread_Body;
|
|
-- arg : System.Address)
|
|
-- return int;
|
|
-- pragma Import (C, pthread_create_base, "pthread_create");
|
|
|
|
St : aliased st_t := attributes.st;
|
|
|
|
function st_new
|
|
(start_routine : Thread_Body;
|
|
arg : System.Address;
|
|
attributes : access st_t;
|
|
thread : access pthread_t)
|
|
return int;
|
|
pragma Import (C, st_new, "st_new");
|
|
|
|
begin
|
|
-- Following code would be used if above commented function worked
|
|
|
|
-- if pthread_create_base
|
|
-- (thread, attributes.all, start_routine, arg) /= 0 then
|
|
|
|
if st_new (start_routine, arg, St'Access, thread) /= 0 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_create;
|
|
|
|
function pthread_detach (thread : pthread_t) return int is
|
|
aliased_thread : aliased pthread_t := thread;
|
|
|
|
function pthread_detach_base (thread : access pthread_t) return int;
|
|
pragma Import (C, pthread_detach_base, "pthread_detach");
|
|
|
|
begin
|
|
if pthread_detach_base (aliased_thread'Access) /= 0 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_detach;
|
|
|
|
--------------------------
|
|
-- POSIX.1c Section 17 --
|
|
--------------------------
|
|
|
|
function pthread_setspecific
|
|
(key : pthread_key_t;
|
|
value : System.Address)
|
|
return int
|
|
is
|
|
function pthread_setspecific_base
|
|
(key : pthread_key_t;
|
|
value : System.Address)
|
|
return int;
|
|
pragma Import (C, pthread_setspecific_base, "pthread_setspecific");
|
|
|
|
begin
|
|
if pthread_setspecific_base (key, value) /= 0 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_setspecific;
|
|
|
|
function pthread_getspecific (key : pthread_key_t) return System.Address is
|
|
procedure pthread_getspecific_base
|
|
(key : pthread_key_t;
|
|
value : access System.Address);
|
|
pragma Import (C, pthread_getspecific_base, "pthread_getspecific");
|
|
|
|
value : aliased System.Address := System.Null_Address;
|
|
|
|
begin
|
|
pthread_getspecific_base (key, value'Unchecked_Access);
|
|
return value;
|
|
end pthread_getspecific;
|
|
|
|
function Get_Stack_Base (thread : pthread_t) return Address is
|
|
pragma Warnings (Off, thread);
|
|
|
|
begin
|
|
return Null_Address;
|
|
end Get_Stack_Base;
|
|
|
|
function pthread_key_create
|
|
(key : access pthread_key_t;
|
|
destructor : destructor_pointer)
|
|
return int
|
|
is
|
|
function pthread_keycreate
|
|
(key : access pthread_key_t;
|
|
destructor : destructor_pointer)
|
|
return int;
|
|
pragma Import (C, pthread_keycreate, "pthread_keycreate");
|
|
|
|
begin
|
|
if pthread_keycreate (key, destructor) /= 0 then
|
|
return errno;
|
|
end if;
|
|
|
|
return 0;
|
|
end pthread_key_create;
|
|
|
|
procedure pthread_init is
|
|
begin
|
|
null;
|
|
end pthread_init;
|
|
|
|
end System.OS_Interface;
|