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|
------------------------------------------------------------------------------
-- --
-- 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 --
-- --
-- --
-- Copyright (C) 1997-2001 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 package includes 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 Preelaborate;
pragma Linker_Options ("-lposix");
pragma Linker_Options ("-lpthread");
subtype int is Interfaces.C.int;
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");
EPERM : constant := 1; -- Operation not permitted
ENOENT : constant := 2; -- No such file or directory
ESRCH : constant := 3; -- No such process
EINTR : constant := 4; -- Interrupted system call
EIO : constant := 5; -- Input/output error
ENXIO : constant := 6; -- Device not configured
E2BIG : constant := 7; -- Argument list too long
ENOEXEC : constant := 8; -- Exec format error
EBADF : constant := 9; -- Bad file descriptor
ECHILD : constant := 10; -- No child processes
EDEADLK : constant := 11; -- Resource deadlock avoided
ENOMEM : constant := 12; -- Cannot allocate memory
EACCES : constant := 13; -- Permission denied
EFAULT : constant := 14; -- Bad address
ENOTBLK : constant := 15; -- Block device required
EBUSY : constant := 16; -- Device busy
EEXIST : constant := 17; -- File exists
EXDEV : constant := 18; -- Cross-device link
ENODEV : constant := 19;
ENOTDIR : constant := 20; -- Not a directory
EISDIR : constant := 21; -- Is a directory
EINVAL : constant := 22; -- Invalid argument
ENFILE : constant := 23;
EMFILE : constant := 24; -- Too many open files
ENOTTY : constant := 25;
ETXTBSY : constant := 26; -- Text file busy
EFBIG : constant := 27; -- File too large
ENOSPC : constant := 28; -- No space left on device
ESPIPE : constant := 29; -- Illegal seek
EROFS : constant := 30; -- Read-only file system
EMLINK : constant := 31; -- Too many links
EPIPE : constant := 32; -- Broken pipe
EDOM : constant := 33;
ERANGE : constant := 34;
EAGAIN : constant := 35;
EWOULDBLOCK : constant := EAGAIN; -- Operation would block
EINPROGRESS : constant := 36; -- Operation now in progress
EALREADY : constant := 37;
ENOTSOCK : constant := 38;
EDESTADDRREQ : constant := 39;
EMSGSIZE : constant := 40; -- Message too long
EPROTOTYPE : constant := 41;
ENOPROTOOPT : constant := 42; -- Protocol not available
EPROTONOSUPPORT : constant := 43; -- Protocol not supported
ESOCKTNOSUPPORT : constant := 44; -- Socket type not supported
EOPNOTSUPP : constant := 45; -- Operation not supported
EPFNOSUPPORT : constant := 46;
EAFNOSUPPORT : constant := 47;
EADDRINUSE : constant := 48; -- Address already in use
EADDRNOTAVAIL : constant := 49;
ENETDOWN : constant := 50; -- Network is down
ENETUNREACH : constant := 51; -- Network is unreachable
ENETRESET : constant := 52;
ECONNABORTED : constant := 53;
ECONNRESET : constant := 54; -- Connection reset by peer
ENOBUFS : constant := 55; -- No buffer space available
EISCONN : constant := 56;
ENOTCONN : constant := 57; -- Socket is not connected
ESHUTDOWN : constant := 58;
ETOOMANYREFS : constant := 59;
ETIMEDOUT : constant := 60; -- Operation timed out
ECONNREFUSED : constant := 61; -- Connection refused
ELOOP : constant := 62;
ENAMETOOLONG : constant := 63; -- File name too long
EHOSTDOWN : constant := 64; -- Host is down
EHOSTUNREACH : constant := 65; -- No route to host
ENOTEMPTY : constant := 66; -- Directory not empty
EPROCLIM : constant := 67; -- Too many processes
EUSERS : constant := 68; -- Too many users
EDQUOT : constant := 69; -- Disc quota exceeded
ESTALE : constant := 70; -- Stale NFS file handle
EREMOTE : constant := 71;
EBADRPC : constant := 72; -- RPC struct is bad
ERPCMISMATCH : constant := 73; -- RPC version wrong
EPROGUNAVAIL : constant := 74; -- RPC prog. not avail
EPROGMISMATCH : constant := 75; -- Program version wrong
EPROCUNAVAIL : constant := 76; -- Bad procedure for program
ENOLCK : constant := 77; -- No locks available
ENOSYS : constant := 78; -- Function not implemented
EFTYPE : constant := 79;
EAUTH : constant := 80; -- Authentication error
ENEEDAUTH : constant := 81; -- Need authenticator
EIDRM : constant := 82; -- Identifier removed
ENOMSG : constant := 83; -- No message of desired type
EOVERFLOW : constant := 84;
EILSEQ : constant := 85; -- Illegal byte sequence
ENOTSUP : constant := 86; -- Not supported
ECANCELED : constant := 87; -- Operation canceled
EBADMSG : constant := 88; -- Bad or Corrupt message
ENODATA : constant := 89; -- No message available
ENOSR : constant := 90; -- No STREAM resources
ENOSTR : constant := 91; -- Not a STREAM
ETIME : constant := 92; -- STREAM ioctl timeout
ELAST : constant := 92; -- Must equal largest errno
-------------
-- Signals --
-------------
Max_Interrupt : constant := 64;
type Signal is new int range 0 .. Max_Interrupt;
for Signal'Size use int'Size;
sighup : constant := 1; -- hangup
sigint : constant := 2; -- interrupt
sigquit : constant := 3; -- quit
sigill : constant := 4; -- illegal instruction (not reset when caught)
sigtrap : constant := 5; -- trace trap (not reset when caught)
sigabrt : constant := 6; -- abort()
sigiot : constant := sigabrt; -- compatibility
sigemt : constant := 7; -- EMT instruction
sigfpe : constant := 8; -- floating point exception
sigkill : constant := 9; -- kill (cannot be caught or ignored)
sigbus : constant := 10; -- bus error
sigsegv : constant := 11; -- segmentation violation
sigsys : constant := 12; -- bad argument to system call
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
sigurg : constant := 16; -- urgent condition on IO channel
sigstop : constant := 17; -- sendable stop signal not from tty
sigtstp : constant := 18; -- stop signal from tty
sigcont : constant := 19; -- continue a stopped process
sigchld : constant := 20; -- to parent on child stop or exit
sigttin : constant := 21; -- to readers pgrp upon background tty read
sigttou : constant := 22; -- like TTIN for output if (tp->t_local<OSTOP)
sigio : constant := 23; -- input/output possible signal
sigxcpu : constant := 24; -- exceeded CPU time limit
sigxfsz : constant := 25; -- exceeded file size limit
sigvtalrm : constant := 26; -- virtual time alarm
sigprof : constant := 27; -- profiling time alarm
sigwinch : constant := 28; -- window size changes
siginfo : constant := 29; -- information request
sigusr1 : constant := 30; -- user defined signal 1
sigusr2 : constant := 31; -- user defined signal 2
sigpwr : constant := 32; -- power fail/restart (not reset when caught)
sigwaiting : constant := 0; -- process's lwps blocked (Solaris)
sigcancel : constant := 0; -- thread cancellation signal (libthread)
type signal_set is array (Natural range <>) of Signal;
Unmasked : constant signal_set := (sigkill, sigill, sigprof, sigtrap,
sigpwr);
-- Following signals should not be disturbed.
-- See c-posix-signals.c in FLORIST
Reserved : constant signal_set := (sigalrm, sigbus, sigill, sigsegv,
sigfpe, sigabrt, sigkill, sigstop);
-- PTHREAD_SIGMASK(3)
SIG_BLOCK : constant := 1;
SIG_SETMASK : constant := 3;
SIG_UNBLOCK : constant := 2;
type sigset_t is private;
type sigset_t_ptr is access all sigset_t;
-- Binding to macros defined in <signal.h>
function sigaddset (set : access sigset_t; sig : Signal) return int;
pragma Import (C, sigaddset, "adasigaddset");
function sigdelset (set : access sigset_t; sig : Signal) return int;
pragma Import (C, sigdelset, "adasigdelset");
function sigfillset (set : access sigset_t) return int;
pragma Import (C, sigfillset, "adasigfillset");
function sigismember (set : access sigset_t; sig : Signal) return int;
pragma Import (C, sigismember, "adasigismember");
function sigemptyset (set : access sigset_t) return int;
pragma Import (C, sigemptyset, "adasigemptyset");
type struct_sigaction is record
sa_handler : System.Address;
sa_mask : sigset_t;
sa_flags : int;
end record;
pragma Convention (C, struct_sigaction);
type struct_sigaction_ptr is access all struct_sigaction;
SIG_DFL : constant := 0;
SIG_IGN : constant := 1;
function sigaction
(sig : Signal;
act : struct_sigaction_ptr;
oact : struct_sigaction_ptr := null) return int;
pragma Import (C, sigaction, "adasigaction");
----------
-- Time --
----------
type clockid_t is new int;
CLOCK_REALTIME : constant := 0;
type timespec is private;
function To_Duration (
TS : timespec)
return Duration;
pragma Inline (To_Duration);
function To_Timespec (
D : Duration)
return timespec;
pragma Inline (To_Timespec);
type Struct_Timeval is private;
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 : System.Address := System.Null_Address)
return int;
pragma Import (C, Gettimeofday, "gettimeofday");
function clock_gettime
(clock_id : clockid_t;
tp : access timespec) return int;
pragma Import (C, clock_gettime, "clock_gettime");
---------
-- LWP --
---------
type lwpid_t is new long;
function lwp_self return System.Address;
pragma Import (C, lwp_self, "ada_lwp_self");
-------------------------
-- Priority Scheduling --
-------------------------
SCHED_FIFO : constant := 1;
SCHED_RR : constant := 2;
SCHED_TS : constant := 3;
SCHED_OTHER : constant := 3;
SCHED_NP : constant := 4;
function sched_get_priority_min (Policy : int) return int;
pragma Import (C, sched_get_priority_min, "sched_get_priority_min");
function sched_get_priority_max (Policy : int) return int;
pragma Import (C, sched_get_priority_max, "sched_get_priority_max");
-------------
-- 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;
subtype cond_t is pthread_cond_t;
PTHREAD_CREATE_DETACHED : constant := 1;
---------------------------------------
-- Nonstandard Thread Initialization --
---------------------------------------
procedure pthread_init;
pragma Inline (pthread_init);
-- This is a dummy procedure to share some GNULLI files
-------------------------
-- POSIX.1c Section 3 --
-------------------------
function sigwait
(set : access sigset_t;
sig : access Signal) return int;
pragma Import (C, sigwait, "adasigwait");
function pthread_kill
(thread : pthread_t;
sig : Signal) return int;
pragma Import (C, pthread_kill, "pthread_kill");
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 --
--------------------------
PTHREAD_PRIO_NONE : constant := 0;
PTHREAD_PRIO_PROTECT : constant := 2;
PTHREAD_PRIO_INHERIT : constant := 1;
function pthread_mutexattr_setprotocol
(attr : access pthread_mutexattr_t;
protocol : int) return int;
function pthread_mutexattr_setprioceiling
(attr : access pthread_mutexattr_t;
prioceiling : int) return int;
type struct_sched_param is record
sched_priority : int;
end record;
for struct_sched_param use record
sched_priority at 0 range 0 .. 31;
end record;
pragma Convention (C, struct_sched_param);
function pthread_setschedparam
(thread : pthread_t;
policy : int;
param : access struct_sched_param)
return int;
-- Does not exist yet - we provide a dummy
-- 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_setinheritsched
(attr : access pthread_attr_t;
inheritsched : int) return int;
pragma Import
(C, pthread_attr_setinheritsched, "pthread_attr_setinheritsched");
function pthread_attr_setschedpolicy
(attr : access pthread_attr_t;
policy : int) return int;
pragma Import (C, pthread_attr_setschedpolicy);
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 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);
function pthread_attr_setstacksize
(attr : access pthread_attr_t;
stacksize : size_t) return int;
pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
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");
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");
--------------------------
-- 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");
---------------------------------------------------------------
-- Non portable SGI 6.5 additions to the pthread interface --
-- must be executed from within the context of a system --
-- scope task --
---------------------------------------------------------------
function pthread_setrunon_np (cpu : int) return int;
pragma Import (C, pthread_setrunon_np, "pthread_setrunon_np");
private
type array_type_1 is array (Integer range 0 .. 3) of unsigned;
type sigset_t is record
X_X_sigbits : array_type_1;
end record;
pragma Convention (C, sigset_t);
type pid_t is new long;
type time_t is new long;
type timespec is record
tv_sec : time_t;
tv_nsec : long;
end record;
for timespec use record
tv_sec at 0 range 0 .. 31;
tv_nsec at 4 range 0 .. 31;
end record;
pragma Convention (C, timespec);
type struct_timeval is record
tv_sec : time_t;
tv_usec : time_t;
end record;
pragma Convention (C, struct_timeval);
type array_type_9 is array (Integer range 0 .. 4) of long;
type pthread_attr_t is record
X_X_D : array_type_9;
end record;
pragma Convention (C, pthread_attr_t);
type array_type_8 is array (Integer range 0 .. 1) of long;
type pthread_condattr_t is record
X_X_D : array_type_8;
end record;
pragma Convention (C, pthread_condattr_t);
type array_type_7 is array (Integer range 0 .. 1) of long;
type pthread_mutexattr_t is record
X_X_D : array_type_7;
end record;
pragma Convention (C, pthread_mutexattr_t);
type pthread_t is new unsigned;
type array_type_10 is array (Integer range 0 .. 7) of long;
type pthread_mutex_t is record
X_X_D : array_type_10;
end record;
pragma Convention (C, pthread_mutex_t);
type array_type_11 is array (Integer range 0 .. 7) of long;
type pthread_cond_t is record
X_X_D : array_type_11;
end record;
pragma Convention (C, pthread_cond_t);
type pthread_key_t is new int;
end System.OS_Interface;
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