File : s-osinte.ads
------------------------------------------------------------------------------
-- --
-- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS --
-- --
-- S Y S T E M . O S _ I N T E R F A C E --
-- --
-- S p e c --
-- --
-- $Revision: 1.18 $
-- --
-- Copyright (C) 1991-1999 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. It is --
-- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
-- State University (http://www.gnat.com). --
-- --
------------------------------------------------------------------------------
-- This is a Linux (LinuxThreads) version of this package.
-- This package encapsulates all direct interfaces to OS services
-- that are needed by children of System.
-- PLEASE DO NOT add any with-clauses to this package
-- or remove the pragma Elaborate_Body.
-- It is designed to be a bottom-level (leaf) package.
with Interfaces.C;
package System.OS_Interface is
pragma Elaborate_Body;
pragma Linker_Options ("-lpthread");
subtype int is Interfaces.C.int;
subtype char is Interfaces.C.char;
subtype short is Interfaces.C.short;
subtype long is Interfaces.C.long;
subtype unsigned is Interfaces.C.unsigned;
subtype unsigned_short is Interfaces.C.unsigned_short;
subtype unsigned_long is Interfaces.C.unsigned_long;
subtype unsigned_char is Interfaces.C.unsigned_char;
subtype plain_char is Interfaces.C.plain_char;
subtype size_t is Interfaces.C.size_t;
-----------
-- Errno --
-----------
function errno return int;
pragma Import (C, errno, "__get_errno");
-- NAMEs not used are commented-out
-- NAMEs not supported on this system have __NAME for value
-- E2BIG : constant := 7;
-- EACCES : constant := 13;
EAGAIN : constant := 11;
-- EBADF : constant := 9;
-- EBUSY : constant := 16;
-- ECHILD : constant := 10;
-- EDEADLK : constant := 45;
-- EDOM : constant := 33;
-- EEXIST : constant := 17;
-- EFAULT : constant := 14;
-- EFBIG : constant := 27;
EINTR : constant := 4;
EINVAL : constant := 22;
-- EIO : constant := 5;
-- EISDIR : constant := 21;
-- EMFILE : constant := 24;
-- EMLINK : constant := 31;
-- ENAMETOOLONG : constant := 78;
-- ENFILE : constant := 23;
-- ENODEV : constant := 19;
-- ENOENT : constant := 2;
-- ENOEXEC : constant := 8;
-- ENOLCK : constant := 46;
ENOMEM : constant := 12;
-- ENOSPC : constant := 28;
-- ENOSYS : constant := 89;
-- ENOTDIR : constant := 20;
-- ENOTEMPTY : constant := 93;
-- ENOTTY : constant := 25;
-- ENXIO : constant := 6;
EPERM : constant := 1;
-- EPIPE : constant := 32;
-- ERANGE : constant := 34;
-- EROFS : constant := 30;
-- ESPIPE : constant := 29;
-- ESRCH : constant := 3;
ETIMEDOUT : constant := 110;
-- EXDEV : constant := 18;
-------------
-- Signals --
-------------
NSIG : constant := 64;
type Signal is new int range 0 .. Interfaces.C."-" (NSIG, 1);
for Signal'Size use int'Size;
SIGHUP : constant := 1; -- hangup
SIGINT : constant := 2; -- interrupt (rubout)
SIGQUIT : constant := 3; -- quit (ASCD FS)
SIGILL : constant := 4; -- illegal instruction (not reset)
SIGTRAP : constant := 5; -- trace trap (not reset)
SIGIOT : constant := 6; -- IOT instruction
SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the future
SIGFPE : constant := 8; -- floating point exception
SIGKILL : constant := 9; -- kill (cannot be caught or ignored)
SIGBUS : constant := 7; -- bus error
SIGSEGV : constant := 11; -- segmentation violation
SIGPIPE : constant := 13; -- write on a pipe with no one to read it
SIGALRM : constant := 14; -- alarm clock
SIGTERM : constant := 15; -- software termination signal from kill
SIGUSR1 : constant := 10; -- user defined signal 1
SIGUSR2 : constant := 12; -- user defined signal 2
SIGCLD : constant := 17; -- alias for SIGCHLD
SIGCHLD : constant := 17; -- child status change
SIGPWR : constant := 30; -- power-fail restart
SIGWINCH : constant := 28; -- window size change
SIGURG : constant := 23; -- urgent condition on IO channel
SIGPOLL : constant := 29; -- pollable event occurred
SIGIO : constant := 29; -- I/O now possible (4.2 BSD)
SIGLOST : constant := 29; -- File lock lost
SIGSTOP : constant := 19; -- stop (cannot be caught or ignored)
SIGTSTP : constant := 20; -- user stop requested from tty
SIGCONT : constant := 18; -- stopped process has been continued
SIGTTIN : constant := 21; -- background tty read attempted
SIGTTOU : constant := 22; -- background tty write attempted
SIGVTALRM : constant := 26; -- virtual timer expired
SIGPROF : constant := 27; -- profiling timer expired
SIGXCPU : constant := 24; -- CPU time limit exceeded
SIGXFSZ : constant := 25; -- filesize limit exceeded
SIGUNUSED : constant := 31; -- unused signal (Linux)
SIGSTKFLT : constant := 16; -- coprocessor stack fault (Linux)
SIGLTHRRES : constant := 32; -- LinuxThreads restart signal
SIGLTHRCAN : constant := 33; -- LinuxThreads cancel signal
SIGLTHRDBG : constant := 34; -- LinuxThreads debugger signal
SIGADAABORT : constant := SIGABRT;
-- Change this if you want to use another signal for task abort.
-- SIGTERM might be a good one.
type Signal_Set is array (Natural range <>) of Signal;
-- pthread_sig_restart : Signal;
-- pragma Import (C, pthread_sig_restart, "__pthread_sig_restart");
-- pthread_sig_cancel : Signal;
-- pragma Import (C, pthread_sig_cancel, "__pthread_sig_cancel");
-- pthread_sig_debug : Signal;
-- pragma Import (C, pthread_sig_debug, "__pthread_sig_debug");
Unmasked : constant Signal_Set :=
(
SIGTRAP,
-- To enable debugging on multithreaded applications, mark SIGTRAP to
-- be kept unmasked.
SIGBUS,
SIGTTIN, SIGTTOU, SIGTSTP,
-- Keep these three signals unmasked so that background processes
-- and IO behaves as normal "C" applications
SIGPROF,
-- To avoid confusing the profiler
SIGKILL, SIGSTOP,
-- These two signals actually cannot be masked;
-- POSIX simply won't allow it.
-- pthread_sig_restart, pthread_sig_cancel, pthread_sig_debug);
SIGLTHRRES, SIGLTHRCAN, SIGLTHRDBG);
Reserved : constant Signal_Set :=
-- I am not sure why the following two signals are reserved.
-- I guess they are not supported by this version of Linux.
(SIGVTALRM, SIGUNUSED);
type sigset_t is private;
function sigaddset
(set : access sigset_t;
sig : Signal)
return int;
pragma Import (C, sigaddset, "sigaddset");
function sigdelset
(set : access sigset_t;
sig : Signal)
return int;
pragma Import (C, sigdelset, "sigdelset");
function sigfillset
(set : access sigset_t)
return int;
pragma Import (C, sigfillset, "sigfillset");
function sigismember
(set : access sigset_t;
sig : Signal)
return int;
pragma Import (C, sigismember, "sigismember");
function sigemptyset
(set : access sigset_t)
return int;
pragma Import (C, sigemptyset, "sigemptyset");
type union_type_3 is new String (1 .. 116);
type siginfo_t is record
si_signo : int;
si_code : int;
si_errno : int;
X_data : union_type_3;
end record;
pragma Convention (C, siginfo_t);
type struct_sigaction is record
sa_handler : System.Address;
sa_mask : sigset_t;
sa_flags : unsigned_long;
sa_restorer : System.Address;
end record;
pragma Convention (C, struct_sigaction);
type struct_sigaction_ptr is access all struct_sigaction;
type Machine_State is record
eip : unsigned_long;
ebx : unsigned_long;
esp : unsigned_long;
ebp : unsigned_long;
esi : unsigned_long;
edi : unsigned_long;
end record;
type Machine_State_Ptr is access all Machine_State;
SIG_BLOCK : constant := 0;
SIG_UNBLOCK : constant := 1;
SIG_SETMASK : constant := 2;
-- SA_NOCLDSTOP : constant := 1;
-- not used
-- SA_SIGINFO : constant := __SA_SIGINFO;
-- not used
SIG_DFL : constant := 0;
SIG_IGN : constant := 1;
-- SIG_ERR : constant := -1;
-- not used
function sigaction
(sig : Signal;
act : struct_sigaction_ptr;
oact : struct_sigaction_ptr)
return int;
pragma Import (C, sigaction, "sigaction");
----------
-- Time --
----------
type timespec is private;
function nanosleep (rqtp, rmtp : access timespec) return int;
pragma Import (C, nanosleep, "nanosleep");
function To_Duration (TS : timespec) return Duration;
pragma Inline (To_Duration);
function To_Timespec (D : Duration) return timespec;
pragma Inline (To_Timespec);
type struct_timezone is record
tz_minuteswest : int;
tz_dsttime : int;
end record;
pragma Convention (C, struct_timezone);
type struct_timezone_ptr is access all struct_timezone;
type struct_timeval is private;
-- This is needed on systems that do not have clock_gettime()
-- but do have gettimeofday().
function To_Duration (TV : struct_timeval) return Duration;
pragma Inline (To_Duration);
function To_Timeval (D : Duration) return struct_timeval;
pragma Inline (To_Timeval);
function gettimeofday
(tv : access struct_timeval;
tz : struct_timezone_ptr) return int;
pragma Import (C, gettimeofday, "gettimeofday");
-- add a hook to locate the Epoch, for use with Calendar????
-------------------------
-- Priority Scheduling --
-------------------------
MIN_PRIO : constant := 0;
MAX_PRIO : constant := 0;
SCHED_OTHER : constant := 0;
SCHED_FIFO : constant := 1;
SCHED_RR : constant := 2;
-------------
-- Process --
-------------
type pid_t is private;
function kill
(pid : pid_t;
sig : Signal)
return int;
pragma Import (C, kill, "kill");
function getpid return pid_t;
pragma Import (C, getpid, "getpid");
-------------
-- Threads --
-------------
type Thread_Body is access
function (arg : System.Address) return System.Address;
type pthread_t is private;
subtype Thread_Id is pthread_t;
type pthread_mutex_t is limited private;
type pthread_cond_t is limited private;
type pthread_attr_t is limited private;
type pthread_mutexattr_t is limited private;
type pthread_condattr_t is limited private;
type pthread_key_t is private;
PTHREAD_CREATE_DETACHED : constant := 1;
PTHREAD_CREATE_JOINABLE : constant := 0;
---------------------------
-- POSIX.1c Section 3 --
---------------------------
function sigwait
(set : access sigset_t;
sig : access Signal)
return int;
pragma Import (C, sigwait, "sigwait");
function pthread_kill
(thread : pthread_t;
sig : Signal)
return int;
pragma Import (C, pthread_kill, "pthread_kill");
type sigset_t_ptr is access all sigset_t;
function pthread_sigmask
(how : int;
set : sigset_t_ptr;
oset : sigset_t_ptr)
return int;
pragma Import (C, pthread_sigmask, "pthread_sigmask");
----------------------------
-- POSIX.1c Section 11 --
----------------------------
function pthread_mutexattr_init
(attr : access pthread_mutexattr_t)
return int;
pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
function pthread_mutexattr_destroy
(attr : access pthread_mutexattr_t)
return int;
pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
function pthread_mutex_init
(mutex : access pthread_mutex_t;
attr : access pthread_mutexattr_t)
return int;
pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
function pthread_mutex_destroy
(mutex : access pthread_mutex_t)
return int;
pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
function pthread_mutex_lock
(mutex : access pthread_mutex_t)
return int;
pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
function pthread_mutex_unlock
(mutex : access pthread_mutex_t)
return int;
pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
function pthread_condattr_init
(attr : access pthread_condattr_t)
return int;
pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
function pthread_condattr_destroy
(attr : access pthread_condattr_t)
return int;
pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
function pthread_cond_init
(cond : access pthread_cond_t;
attr : access pthread_condattr_t)
return int;
pragma Import (C, pthread_cond_init, "pthread_cond_init");
function pthread_cond_destroy
(cond : access pthread_cond_t)
return int;
pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
function pthread_cond_signal
(cond : access pthread_cond_t)
return int;
pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
function pthread_cond_wait
(cond : access pthread_cond_t;
mutex : access pthread_mutex_t)
return int;
pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
function pthread_cond_timedwait
(cond : access pthread_cond_t;
mutex : access pthread_mutex_t;
abstime : access timespec)
return int;
pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
----------------------------
-- POSIX.1c Section 13 --
----------------------------
type struct_sched_param is record
sched_priority : int; -- scheduling priority
end record;
pragma Convention (C, struct_sched_param);
function pthread_getschedparam
(thread : pthread_t;
policy : access int;
param : access struct_sched_param)
return int;
pragma Import
(C, pthread_getschedparam, "pthread_getschedparam");
function pthread_setschedparam
(thread : pthread_t;
policy : int;
param : access struct_sched_param)
return int;
pragma Import
(C, pthread_setschedparam, "pthread_setschedparam");
function pthread_attr_setscope
(attr : access pthread_attr_t;
contentionscope : int)
return int;
pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
function pthread_attr_getscope
(attr : access pthread_attr_t;
contentionscope : access int)
return int;
pragma Import (C, pthread_attr_getscope, "pthread_attr_getscope");
function pthread_attr_setinheritsched
(attr : access pthread_attr_t;
inheritsched : int)
return int;
pragma Import
(C, pthread_attr_setinheritsched, "pthread_attr_setinheritsched");
function pthread_attr_getinheritsched
(attr : access pthread_attr_t;
inheritsched : access int)
return int;
pragma Import
(C, pthread_attr_getinheritsched, "pthread_attr_getinheritsched");
function pthread_attr_setschedparam
(attr : access pthread_attr_t;
sched_param : access struct_sched_param)
return int;
pragma Import (C, pthread_attr_setschedparam, "pthread_attr_setschedparam");
function pthread_attr_getschedparam
(attr : access pthread_attr_t;
sched_param : access struct_sched_param)
return int;
pragma Import (C, pthread_attr_getschedparam, "pthread_attr_getschedparam");
function sched_yield return int;
pragma Import (C, sched_yield, "sched_yield");
-----------------------------
-- P1003.1c - Section 16 --
-----------------------------
function pthread_attr_init
(attributes : access pthread_attr_t)
return int;
pragma Import (C, pthread_attr_init, "pthread_attr_init");
function pthread_attr_destroy
(attributes : access pthread_attr_t)
return int;
pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
function pthread_attr_setdetachstate
(attr : access pthread_attr_t;
detachstate : int)
return int;
pragma Import
(C, pthread_attr_setdetachstate, "pthread_attr_setdetachstate");
function pthread_attr_getdetachstate
(attr : access pthread_attr_t;
detachstate : access int)
return int;
pragma Import
(C, pthread_attr_getdetachstate, "pthread_attr_getdetachstate");
function pthread_create
(thread : access pthread_t;
attributes : access pthread_attr_t;
start_routine : Thread_Body;
arg : System.Address)
return int;
pragma Import (C, pthread_create, "pthread_create");
function pthread_detach (thread : pthread_t) return int;
pragma Import (C, pthread_detach, "pthread_detach");
procedure pthread_exit (status : System.Address);
pragma Import (C, pthread_exit, "pthread_exit");
function pthread_self return pthread_t;
pragma Import (C, pthread_self, "pthread_self");
function pthread_equal (t1 : pthread_t; t2 : pthread_t)
return int;
-- be careful not to use "=" on thread_t!
pragma Import (C, pthread_equal, "pthread_equal");
----------------------------
-- POSIX.1c Section 17 --
----------------------------
function pthread_setspecific
(key : pthread_key_t;
value : System.Address)
return int;
pragma Import (C, pthread_setspecific, "pthread_setspecific");
function pthread_getspecific (key : pthread_key_t) return System.Address;
pragma Import (C, pthread_getspecific, "pthread_getspecific");
type destructor_pointer is access
procedure (arg : System.Address);
function pthread_key_create
(key : access pthread_key_t;
destructor : destructor_pointer)
return int;
pragma Import (C, pthread_key_create, "pthread_key_create");
procedure pthread_init;
private
type sigset_t is array (0 .. 31) of unsigned_long;
pragma Convention (C, sigset_t);
for sigset_t'Size use 1024;
-- This is for GNU libc version 2 but should be backward compatible with
-- other libc where sigset_t is smaller.
type pid_t is new int;
type time_t is new long;
type timespec is record
tv_sec : time_t;
tv_nsec : long;
end record;
pragma Convention (C, timespec);
type struct_timeval is record
tv_sec : long;
tv_usec : long;
end record;
pragma Convention (C, struct_timeval);
type pthread_attr_t is record
detachstate : int;
schedpolicy : int;
schedparam : struct_sched_param;
inheritsched : int;
scope : int;
guardsize : size_t;
stackaddr_set : int;
stackaddr : System.Address;
stacksize : size_t;
end record;
pragma Convention (C_Pass_By_Copy, pthread_attr_t);
type pthread_condattr_t is record
dummy : int;
end record;
pragma Convention (C, pthread_condattr_t);
type pthread_mutexattr_t is record
mutexkind : int;
end record;
pragma Convention (C, pthread_mutexattr_t);
type struct_pthread_cleanup_buffer;
type pthread_cleanup_buffer_ptr is access struct_pthread_cleanup_buffer;
type proc_type_1 is access procedure (param : in System.Address);
pragma Convention (C, proc_type_1);
type struct_pthread_cleanup_buffer is record
routine : proc_type_1;
arg : System.Address;
canceltype : int;
prev : pthread_cleanup_buffer_ptr;
end record;
pragma Convention (C, struct_pthread_cleanup_buffer);
type pthread_t is new unsigned_long;
type struct_pthread_fastlock is record
status : long;
spinlock : int;
end record;
pragma Convention (C, struct_pthread_fastlock);
type pthread_mutex_t is record
m_reserved : int;
m_count : int;
m_owner : System.Address;
m_kind : int;
m_lock : struct_pthread_fastlock;
end record;
pragma Convention (C, pthread_mutex_t);
type pthread_cond_t is record
c_lock : struct_pthread_fastlock;
c_waiting : System.Address;
end record;
pragma Convention (C, pthread_cond_t);
type pthread_key_t is new unsigned;
end System.OS_Interface;