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: 1.19 $
-- --
-- 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 (FSU THREADS) 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 Preelaborate;
pragma Linker_Options ("-lgthreads");
pragma Linker_Options ("-lmalloc");
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");
-- 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 := 32;
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)
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;
Unmasked : constant Signal_Set :=
(SIGTRAP, SIGBUS, SIGTTIN, SIGTTOU, SIGTSTP, SIGPROF);
Reserved : constant Signal_Set :=
(SIGKILL, SIGSTOP, SIGALRM, 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 --
----------
Time_Slice_Supported : constant boolean := False;
-- Indicates wether time slicing is supported (i.e FSU threads have been
-- compiled with DEF_RR)
type timespec is private;
function nanosleep (rqtp, rmtp : access timespec) return int;
-- FSU_THREADS has nonstandard nanosleep
type clockid_t is private;
CLOCK_REALTIME : constant clockid_t;
function clock_gettime
(clock_id : clockid_t;
tp : access timespec)
return int;
pragma Import (C, clock_gettime, "clock_gettime");
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_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 : access struct_timezone) 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_FIFO : constant := 0;
SCHED_RR : constant := 1;
SCHED_OTHER : 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;
-----------
-- Stack --
-----------
Stack_Base_Available : constant boolean := False;
-- Indicates wether the stack base is available on this target.
-- This allows us to share s-osinte.adb between all the FSU run time.
-- Note that this value can only be true if pthread_t has a complete
-- definition that corresponds exactly to the C header files.
function Get_Stack_Base (thread : pthread_t) return Address;
pragma Inline (Get_Stack_Base);
-- returns the stack base of the specified thread.
-- Only call this function when Stack_Base_Available is True.
function Get_Page_Size return size_t;
function Get_Page_Size return Address;
pragma Import (C, Get_Page_Size, "getpagesize");
-- returns the size of a page, or 0 if this is not relevant on this
-- target
PROT_NONE : constant := 0;
PROT_READ : constant := 1;
PROT_WRITE : constant := 2;
PROT_EXEC : constant := 4;
PROT_ALL : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
PROT_ON : constant := PROT_NONE;
PROT_OFF : constant := PROT_ALL;
function mprotect
(addr : Address; len : size_t; prot : int) return int;
pragma Import (C, mprotect);
-----------------------------------------
-- Nonstandard Thread Initialization --
-----------------------------------------
-- FSU_THREADS requires pthread_init, which is nonstandard
-- and this should be invoked during the elaboration of s-taprop.adb
procedure pthread_init;
pragma Import (C, pthread_init, "pthread_init");
---------------------------
-- POSIX.1c Section 3 --
---------------------------
function sigwait
(set : access sigset_t;
sig : access Signal)
return int;
-- FSU_THREADS has a nonstandard sigwait
function pthread_kill
(thread : pthread_t;
sig : Signal)
return int;
pragma Import (C, pthread_kill, "pthread_kill");
-- FSU threads does not have pthread_sigmask. Instead, it uses
-- sigprocmask to do the signal handling when the thread library is
-- sucked in.
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, "sigprocmask");
----------------------------
-- 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;
-- FSU_THREADS has nonstandard pthread_mutex_lock
function pthread_mutex_unlock
(mutex : access pthread_mutex_t)
return int;
-- FSU_THREADS has nonstandard pthread_mutex_lock
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;
-- FSU_THREADS has a nonstandard pthread_cond_wait
function pthread_cond_timedwait
(cond : access pthread_cond_t;
mutex : access pthread_mutex_t;
abstime : access timespec)
return int;
-- FSU_THREADS has a nonstandard 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;
pragma Import
(C, pthread_mutexattr_setprotocol, "pthread_mutexattr_setprotocol");
function pthread_mutexattr_getprotocol
(attr : access pthread_mutexattr_t;
protocol : access int)
return int;
pragma Import
(C, pthread_mutexattr_getprotocol, "pthread_mutexattr_getprotocol");
function pthread_mutexattr_setprioceiling
(attr : access pthread_mutexattr_t;
prioceiling : int)
return int;
pragma Import
(C, pthread_mutexattr_setprioceiling,
"pthread_mutexattr_setprio_ceiling");
function pthread_mutexattr_getprioceiling
(attr : access pthread_mutexattr_t;
prioceiling : access int)
return int;
pragma Import
(C, pthread_mutexattr_getprioceiling,
"pthread_mutexattr_getprio_ceiling");
type struct_sched_param is record
sched_priority : int; -- scheduling priority
end record;
function pthread_getschedparam
(thread : pthread_t;
policy : access int;
param : access struct_sched_param)
return int;
-- FSU_THREADS does not have pthread_getschedparam
function pthread_setschedparam
(thread : pthread_t;
policy : int;
param : access struct_sched_param)
return int;
-- FSU_THREADS does not have 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_setschedpolicy
(attr : access pthread_attr_t;
policy : int)
return int;
pragma Import
(C, pthread_attr_setschedpolicy,
"pthread_attr_setsched");
function pthread_attr_getschedpolicy
(attr : access pthread_attr_t;
policy : access int)
return int;
pragma Import (C, pthread_attr_getschedpolicy,
"pthread_attr_getsched");
function sched_yield return int;
-- FSU_THREADS does not have 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;
-- FSU_THREADS has a nonstandard 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_attr_getstacksize
(attr : access pthread_attr_t;
stacksize : access size_t)
return int;
pragma Import
(C, pthread_attr_getstacksize, "pthread_attr_getstacksize");
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");
function pthread_detach (thread : pthread_t) return int;
-- FSU_THREADS has a nonstandard 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;
-- FSU_THREADS has a nonstandard 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");
private
type sigset_t is array (0 .. 31) of unsigned_long;
pragma Convention (C, sigset_t);
-- 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 clockid_t is new int;
CLOCK_REALTIME : constant clockid_t := 0;
type struct_timeval is record
tv_sec : long;
tv_usec : long;
end record;
pragma Convention (C, struct_timeval);
type pthread_attr_t is record
flags : int;
stacksize : int;
contentionscope : int;
inheritsched : int;
detachstate : int;
sched : int;
prio : int;
starttime : timespec;
deadline : timespec;
period : timespec;
end record;
pragma Convention (C_Pass_By_Copy, pthread_attr_t);
type pthread_condattr_t is record
flags : int;
end record;
pragma Convention (C, pthread_condattr_t);
type pthread_mutexattr_t is record
flags : int;
prio_ceiling : int;
protocol : int;
end record;
pragma Convention (C, pthread_mutexattr_t);
type sigjmp_buf is array (integer range 0 .. 38) of int;
type array_type_11 is array (integer range 0 .. 2) of System.Address;
type union_type_4 is new int;
type record_type_6 is record
si_signo : int;
si_code : int;
si_value : union_type_4;
end record;
pragma Convention (C, record_type_6);
type array_type_12 is array (integer range 0 .. 44) of record_type_6;
type record_type_7 is record
head : System.Address;
tail : System.Address;
end record;
pragma Convention (C, record_type_7);
type array_type_13 is array (integer range 0 .. 7) of System.Address;
type record_type_5 is record
context : sigjmp_buf;
pbody : sigjmp_buf;
errno : int;
ret : int;
stack_base : System.Address;
state : int;
next : array_type_11;
num_timers : int;
interval : struct_timeval;
sig_info : array_type_12;
sig : int;
code : int;
osp : int;
opc : int;
obp : int;
nscp : System.Address;
scp : System.Address;
joinq : record_type_7;
cond : System.Address;
queue : System.Address;
mask : sigset_t;
pending : sigset_t;
sigwaitset : sigset_t;
func : System.Address;
arg : System.Address;
result : System.Address;
key : array_type_13;
cleanup_top : System.Address;
attr : pthread_attr_t;
base_prio : int;
max_ceiling_prio : int;
new_prio : int;
tp : struct_timeval;
end record;
pragma Convention (C, record_type_5);
type pthread_t is access record_type_5;
type record_type_3 is record
head : System.Address;
tail : System.Address;
end record;
pragma Convention (C, record_type_3);
type pthread_mutex_t is record
queue : record_type_3;
lock : plain_char;
owner : System.Address;
flags : int;
prio_ceiling : int;
protocol : int;
prev_max_ceiling_prio : int;
end record;
pragma Convention (C, pthread_mutex_t);
type record_type_4 is record
head : System.Address;
tail : System.Address;
end record;
pragma Convention (C, record_type_4);
type pthread_cond_t is record
queue : record_type_4;
flags : int;
waiters : int;
mutex : System.Address;
end record;
pragma Convention (C, pthread_cond_t);
type pthread_key_t is new int;
end System.OS_Interface;