| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNU ADA 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) 1999-2003 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, 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. -- |
| -- -- |
| -- 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. |
| |
| with Interfaces.C; |
| |
| 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_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; |
