| ------------------------------------------------------------------------------ |
| -- -- |
| -- 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 -- |
| -- -- |
| -- $Revision: 1.14 $ |
| -- -- |
| -- Copyright (C) 1991-2001, Florida State University -- |
| -- -- |
| -- 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. It is -- |
| -- now maintained by Ada Core Technologies Inc. in cooperation with Florida -- |
| -- State University (http://www.gnat.com). -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This is a DCE version of this package. |
| -- Currently HP-UX and SNI use this file |
| |
| 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. |
| |
| -- This package encapsulates all direct interfaces to OS services |
| -- that are needed by children of System. |
| |
| with Interfaces.C; use Interfaces.C; |
| |
| package body System.OS_Interface is |
| |
| ----------------- |
| -- 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; |
| |
| ----------------- |
| -- 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; |
| |
| 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; |
| |
| 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 |
| Result : int; |
| |
| begin |
| Result := sigwait (set); |
| |
| if Result = -1 then |
| sig.all := 0; |
| return errno; |
| end if; |
| |
| sig.all := Signal (Result); |
| return 0; |
| end sigwait; |
| |
| -- DCE_THREADS does not have pthread_kill. Instead, we just ignore it. |
| |
| function pthread_kill (thread : pthread_t; sig : Signal) return int is |
| begin |
| return 0; |
| end pthread_kill; |
| |
| ---------------------------- |
| -- POSIX.1c Section 11 -- |
| ---------------------------- |
| |
| -- For all the following functions, DCE Threads has a non standard |
| -- behavior: 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; |
| else |
| return 0; |
| end if; |
| 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; |
| else |
| return 0; |
| end if; |
| 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; |
| else |
| return 0; |
| end if; |
| 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; |
| else |
| return 0; |
| end if; |
| 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; |
| else |
| return 0; |
| end if; |
| 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; |
| else |
| return 0; |
| end if; |
| 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; |
| else |
| return 0; |
| end if; |
| 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; |
| else |
| return 0; |
| end if; |
| 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; |
| else |
| return 0; |
| end if; |
| 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; |
| else |
| return 0; |
| end if; |
| 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; |
| else |
| return 0; |
| end if; |
| 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; |
| else |
| return 0; |
| end if; |
| end pthread_cond_wait; |
| |
| function pthread_cond_timedwait |
| (cond : access pthread_cond_t; |
| mutex : access pthread_mutex_t; |
| abstime : access timespec) |
| return int |
| is |
| function pthread_cond_timedwait_base |
| (cond : access pthread_cond_t; |
| mutex : access pthread_mutex_t; |
| abstime : access timespec) |
| return int; |
| pragma Import (C, pthread_cond_timedwait_base, "pthread_cond_timedwait"); |
| |
| begin |
| if pthread_cond_timedwait_base (cond, mutex, abstime) /= 0 then |
| if errno = EAGAIN then |
| return ETIMEDOUT; |
| else |
| return errno; |
| end if; |
| else |
| return 0; |
| end if; |
| 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; |
| priority : int) |
| return int; |
| pragma Import (C, pthread_setscheduler, "pthread_setscheduler"); |
| |
| begin |
| if pthread_setscheduler (thread, policy, param.sched_priority) = -1 then |
| return errno; |
| else |
| return 0; |
| end if; |
| end pthread_setschedparam; |
| |
| 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_init (attributes : access pthread_attr_t) return int |
| is |
| function pthread_attr_create |
| (attributes : access pthread_attr_t) |
| return int; |
| pragma Import (C, pthread_attr_create, "pthread_attr_create"); |
| |
| begin |
| if pthread_attr_create (attributes) /= 0 then |
| return errno; |
| else |
| return 0; |
| end if; |
| end pthread_attr_init; |
| |
| function pthread_attr_destroy |
| (attributes : access pthread_attr_t) return int |
| is |
| function pthread_attr_delete |
| (attributes : access pthread_attr_t) |
| return int; |
| pragma Import (C, pthread_attr_delete, "pthread_attr_delete"); |
| |
| begin |
| if pthread_attr_delete (attributes) /= 0 then |
| return errno; |
| else |
| return 0; |
| end if; |
| end pthread_attr_destroy; |
| |
| function pthread_attr_setstacksize |
| (attr : access pthread_attr_t; |
| stacksize : size_t) return int |
| is |
| function pthread_attr_setstacksize_base |
| (attr : access pthread_attr_t; |
| stacksize : size_t) |
| return int; |
| pragma Import (C, pthread_attr_setstacksize_base, |
| "pthread_attr_setstacksize"); |
| |
| begin |
| if pthread_attr_setstacksize_base (attr, stacksize) /= 0 then |
| return errno; |
| else |
| return 0; |
| end if; |
| end pthread_attr_setstacksize; |
| |
| function pthread_create |
| (thread : access pthread_t; |
| attributes : access pthread_attr_t; |
| start_routine : Thread_Body; |
| arg : System.Address) return int |
| is |
| 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"); |
| |
| begin |
| if pthread_create_base |
| (thread, attributes.all, start_routine, arg) /= 0 |
| then |
| return errno; |
| else |
| return 0; |
| end if; |
| end pthread_create; |
| |
| ---------------------------- |
| -- 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; |
| else |
| return 0; |
| end if; |
| end pthread_setspecific; |
| |
| function pthread_getspecific (key : pthread_key_t) return System.Address is |
| function pthread_getspecific_base |
| (key : pthread_key_t; |
| value : access System.Address) return int; |
| pragma Import (C, pthread_getspecific_base, "pthread_getspecific"); |
| Addr : aliased System.Address; |
| |
| begin |
| if pthread_getspecific_base (key, Addr'Access) /= 0 then |
| return System.Null_Address; |
| else |
| return Addr; |
| end if; |
| end pthread_getspecific; |
| |
| 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; |
| else |
| return 0; |
| end if; |
| end pthread_key_create; |
| |
| function Get_Stack_Base (thread : pthread_t) return Address is |
| begin |
| return Null_Address; |
| end Get_Stack_Base; |
| |
| procedure pthread_init is |
| begin |
| null; |
| end pthread_init; |
| |
| function intr_attach (sig : int; handler : isr_address) return long is |
| function c_signal (sig : int; handler : isr_address) return long; |
| pragma Import (C, c_signal, "signal"); |
| |
| begin |
| return c_signal (sig, handler); |
| end intr_attach; |
| |
| end System.OS_Interface; |
