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------------------------------------------------------------------------------
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-- --
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-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
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-- --
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-- S Y S T E M . O S _ I N T E R F A C E --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 1991-1994, Florida State University --
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-- Copyright (C) 1995-2005, Free Software Foundation, Inc. --
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-- --
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-- GNARL is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 2, or (at your option) any later ver- --
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-- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNARL; see file COPYING. If not, write --
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-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
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-- Boston, MA 02110-1301, USA. --
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-- --
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-- As a special exception, if other files instantiate generics from this --
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-- unit, or you link this unit with other files to produce an executable, --
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-- this unit does not by itself cause the resulting executable to be --
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-- covered by the GNU General Public License. This exception does not --
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-- however invalidate any other reasons why the executable file might be --
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-- covered by the GNU Public License. --
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-- --
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-- GNARL was developed by the GNARL team at Florida State University. --
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-- Extensive contributions were provided by Ada Core Technologies, Inc. --
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-- --
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------------------------------------------------------------------------------
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-- This is the SGI Pthreads version of this package
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-- This package encapsulates all direct interfaces to OS services
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-- that are needed by children of System.
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-- PLEASE DO NOT add any with-clauses to this package or remove the pragma
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-- Preelaborate. This package is designed to be a bottom-level (leaf) package.
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with Interfaces.C;
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with Unchecked_Conversion;
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package System.OS_Interface is
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pragma Preelaborate;
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pragma Linker_Options ("-lpthread");
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subtype int is Interfaces.C.int;
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subtype short is Interfaces.C.short;
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subtype long is Interfaces.C.long;
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subtype unsigned is Interfaces.C.unsigned;
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subtype unsigned_short is Interfaces.C.unsigned_short;
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subtype unsigned_long is Interfaces.C.unsigned_long;
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subtype unsigned_char is Interfaces.C.unsigned_char;
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subtype plain_char is Interfaces.C.plain_char;
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subtype size_t is Interfaces.C.size_t;
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-----------
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-- Errno --
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-----------
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function errno return int;
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pragma Import (C, errno, "__get_errno");
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EINTR : constant := 4; -- interrupted system call
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EAGAIN : constant := 11; -- No more processes
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ENOMEM : constant := 12; -- Not enough core
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EINVAL : constant := 22; -- Invalid argument
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ETIMEDOUT : constant := 145; -- Connection timed out
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-------------
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-- Signals --
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-------------
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Max_Interrupt : constant := 64;
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type Signal is new int range 0 .. Max_Interrupt;
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for Signal'Size use int'Size;
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SIGHUP : constant := 1; -- hangup
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SIGINT : constant := 2; -- interrupt (rubout)
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SIGQUIT : constant := 3; -- quit (ASCD FS)
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SIGILL : constant := 4; -- illegal instruction (not reset)
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SIGTRAP : constant := 5; -- trace trap (not reset)
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SIGIOT : constant := 6; -- IOT instruction
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SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the
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-- future
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SIGEMT : constant := 7; -- EMT instruction
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SIGFPE : constant := 8; -- floating point exception
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SIGKILL : constant := 9; -- kill (cannot be caught or ignored)
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SIGBUS : constant := 10; -- bus error
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SIGSEGV : constant := 11; -- segmentation violation
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SIGSYS : constant := 12; -- bad argument to system call
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SIGPIPE : constant := 13; -- write on a pipe with no one to read it
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SIGALRM : constant := 14; -- alarm clock
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SIGTERM : constant := 15; -- software termination signal from kill
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SIGUSR1 : constant := 16; -- user defined signal 1
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SIGUSR2 : constant := 17; -- user defined signal 2
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SIGCLD : constant := 18; -- alias for SIGCHLD
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SIGCHLD : constant := 18; -- child status change
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SIGPWR : constant := 19; -- power-fail restart
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SIGWINCH : constant := 20; -- window size change
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SIGURG : constant := 21; -- urgent condition on IO channel
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SIGPOLL : constant := 22; -- pollable event occurred
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SIGIO : constant := 22; -- I/O possible (Solaris SIGPOLL alias)
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SIGSTOP : constant := 23; -- stop (cannot be caught or ignored)
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SIGTSTP : constant := 24; -- user stop requested from tty
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SIGCONT : constant := 25; -- stopped process has been continued
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SIGTTIN : constant := 26; -- background tty read attempted
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SIGTTOU : constant := 27; -- background tty write attempted
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SIGVTALRM : constant := 28; -- virtual timer expired
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SIGPROF : constant := 29; -- profiling timer expired
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SIGXCPU : constant := 30; -- CPU time limit exceeded
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SIGXFSZ : constant := 31; -- filesize limit exceeded
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SIGK32 : constant := 32; -- reserved for kernel (IRIX)
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SIGCKPT : constant := 33; -- Checkpoint warning
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SIGRESTART : constant := 34; -- Restart warning
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SIGUME : constant := 35; -- Uncorrectable memory error
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-- Signals defined for Posix 1003.1c.
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SIGPTINTR : constant := 47;
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SIGPTRESCHED : constant := 48;
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-- Posix 1003.1b signals
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SIGRTMIN : constant := 49; -- Posix 1003.1b signals
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SIGRTMAX : constant := 64; -- Posix 1003.1b signals
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type sigset_t is private;
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type sigset_t_ptr is access all sigset_t;
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function sigaddset (set : access sigset_t; sig : Signal) return int;
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pragma Import (C, sigaddset, "sigaddset");
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function sigdelset (set : access sigset_t; sig : Signal) return int;
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pragma Import (C, sigdelset, "sigdelset");
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function sigfillset (set : access sigset_t) return int;
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pragma Import (C, sigfillset, "sigfillset");
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function sigismember (set : access sigset_t; sig : Signal) return int;
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pragma Import (C, sigismember, "sigismember");
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function sigemptyset (set : access sigset_t) return int;
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pragma Import (C, sigemptyset, "sigemptyset");
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type array_type_2 is array (Integer range 0 .. 1) of int;
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type struct_sigaction is record
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sa_flags : int;
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sa_handler : System.Address;
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sa_mask : sigset_t;
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sa_resv : array_type_2;
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end record;
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pragma Convention (C, struct_sigaction);
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type struct_sigaction_ptr is access all struct_sigaction;
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SIG_BLOCK : constant := 1;
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SIG_UNBLOCK : constant := 2;
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SIG_SETMASK : constant := 3;
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SIG_DFL : constant := 0;
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SIG_IGN : constant := 1;
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function sigaction
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(sig : Signal;
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act : struct_sigaction_ptr;
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oact : struct_sigaction_ptr := null) return int;
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pragma Import (C, sigaction, "sigaction");
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----------
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-- Time --
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----------
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type timespec is private;
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type timespec_ptr is access all timespec;
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type clockid_t is private;
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CLOCK_REALTIME : constant clockid_t;
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CLOCK_SGI_FAST : constant clockid_t;
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CLOCK_SGI_CYCLE : constant clockid_t;
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SGI_CYCLECNTR_SIZE : constant := 165;
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function syssgi (request : Interfaces.C.int) return Interfaces.C.ptrdiff_t;
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pragma Import (C, syssgi, "syssgi");
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function clock_gettime
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(clock_id : clockid_t;
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tp : access timespec) return int;
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pragma Import (C, clock_gettime, "clock_gettime");
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function clock_getres
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(clock_id : clockid_t;
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tp : access timespec) return int;
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pragma Import (C, clock_getres, "clock_getres");
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function To_Duration (TS : timespec) return Duration;
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pragma Inline (To_Duration);
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function To_Timespec (D : Duration) return timespec;
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pragma Inline (To_Timespec);
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type struct_timeval is private;
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function To_Duration (TV : struct_timeval) return Duration;
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pragma Inline (To_Duration);
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function To_Timeval (D : Duration) return struct_timeval;
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pragma Inline (To_Timeval);
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-------------------------
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-- Priority Scheduling --
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-------------------------
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SCHED_FIFO : constant := 1;
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SCHED_RR : constant := 2;
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SCHED_TS : constant := 3;
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SCHED_OTHER : constant := 3;
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SCHED_NP : constant := 4;
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function sched_get_priority_min (Policy : int) return int;
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pragma Import (C, sched_get_priority_min, "sched_get_priority_min");
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function sched_get_priority_max (Policy : int) return int;
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pragma Import (C, sched_get_priority_max, "sched_get_priority_max");
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-------------
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-- Process --
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-------------
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type pid_t is private;
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function kill (pid : pid_t; sig : Signal) return int;
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pragma Import (C, kill, "kill");
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function getpid return pid_t;
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pragma Import (C, getpid, "getpid");
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-------------
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-- Threads --
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-------------
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type Thread_Body is access
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function (arg : System.Address) return System.Address;
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function Thread_Body_Access is new
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Unchecked_Conversion (System.Address, Thread_Body);
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type pthread_t is private;
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subtype Thread_Id is pthread_t;
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type pthread_mutex_t is limited private;
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type pthread_cond_t is limited private;
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type pthread_attr_t is limited private;
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type pthread_mutexattr_t is limited private;
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type pthread_condattr_t is limited private;
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type pthread_key_t is private;
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PTHREAD_CREATE_DETACHED : constant := 1;
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---------------------------------------
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-- Nonstandard Thread Initialization --
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---------------------------------------
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procedure pthread_init;
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pragma Inline (pthread_init);
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-- This is a dummy procedure to share some GNULLI files
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-------------------------
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-- POSIX.1c Section 3 --
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-------------------------
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function sigwait
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(set : access sigset_t;
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sig : access Signal) return int;
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pragma Import (C, sigwait, "sigwait");
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function pthread_kill
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(thread : pthread_t;
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sig : Signal) return int;
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pragma Import (C, pthread_kill, "pthread_kill");
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function pthread_sigmask
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(how : int;
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set : sigset_t_ptr;
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oset : sigset_t_ptr) return int;
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pragma Import (C, pthread_sigmask, "pthread_sigmask");
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--------------------------
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-- POSIX.1c Section 11 --
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--------------------------
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function pthread_mutexattr_init
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(attr : access pthread_mutexattr_t) return int;
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pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
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function pthread_mutexattr_destroy
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(attr : access pthread_mutexattr_t) return int;
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pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
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function pthread_mutex_init
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(mutex : access pthread_mutex_t;
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attr : access pthread_mutexattr_t) return int;
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pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
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function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
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pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
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function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
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pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
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function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
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pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
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function pthread_condattr_init
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(attr : access pthread_condattr_t) return int;
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pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
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function pthread_condattr_destroy
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(attr : access pthread_condattr_t) return int;
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pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
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function pthread_cond_init
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(cond : access pthread_cond_t;
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attr : access pthread_condattr_t) return int;
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pragma Import (C, pthread_cond_init, "pthread_cond_init");
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function pthread_cond_destroy (cond : access pthread_cond_t) return int;
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pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
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function pthread_cond_signal (cond : access pthread_cond_t) return int;
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pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
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function pthread_cond_wait
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(cond : access pthread_cond_t;
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mutex : access pthread_mutex_t) return int;
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pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
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function pthread_cond_timedwait
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(cond : access pthread_cond_t;
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mutex : access pthread_mutex_t;
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abstime : access timespec) return int;
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pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
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--------------------------
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348 |
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-- POSIX.1c Section 13 --
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349 |
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|
--------------------------
|
350 |
|
|
|
351 |
|
|
PTHREAD_PRIO_NONE : constant := 0;
|
352 |
|
|
PTHREAD_PRIO_PROTECT : constant := 2;
|
353 |
|
|
PTHREAD_PRIO_INHERIT : constant := 1;
|
354 |
|
|
|
355 |
|
|
function pthread_mutexattr_setprotocol
|
356 |
|
|
(attr : access pthread_mutexattr_t;
|
357 |
|
|
protocol : int) return int;
|
358 |
|
|
pragma Import (C, pthread_mutexattr_setprotocol);
|
359 |
|
|
|
360 |
|
|
function pthread_mutexattr_setprioceiling
|
361 |
|
|
(attr : access pthread_mutexattr_t;
|
362 |
|
|
prioceiling : int) return int;
|
363 |
|
|
pragma Import (C, pthread_mutexattr_setprioceiling);
|
364 |
|
|
|
365 |
|
|
type struct_sched_param is record
|
366 |
|
|
sched_priority : int;
|
367 |
|
|
end record;
|
368 |
|
|
pragma Convention (C, struct_sched_param);
|
369 |
|
|
|
370 |
|
|
function pthread_setschedparam
|
371 |
|
|
(thread : pthread_t;
|
372 |
|
|
policy : int;
|
373 |
|
|
param : access struct_sched_param)
|
374 |
|
|
return int;
|
375 |
|
|
pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
|
376 |
|
|
|
377 |
|
|
function pthread_attr_setscope
|
378 |
|
|
(attr : access pthread_attr_t;
|
379 |
|
|
contentionscope : int) return int;
|
380 |
|
|
pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
|
381 |
|
|
|
382 |
|
|
function pthread_attr_setinheritsched
|
383 |
|
|
(attr : access pthread_attr_t;
|
384 |
|
|
inheritsched : int) return int;
|
385 |
|
|
pragma Import
|
386 |
|
|
(C, pthread_attr_setinheritsched, "pthread_attr_setinheritsched");
|
387 |
|
|
|
388 |
|
|
function pthread_attr_setschedpolicy
|
389 |
|
|
(attr : access pthread_attr_t;
|
390 |
|
|
policy : int) return int;
|
391 |
|
|
pragma Import (C, pthread_attr_setschedpolicy);
|
392 |
|
|
|
393 |
|
|
function pthread_attr_setschedparam
|
394 |
|
|
(attr : access pthread_attr_t;
|
395 |
|
|
sched_param : access struct_sched_param)
|
396 |
|
|
return int;
|
397 |
|
|
pragma Import (C, pthread_attr_setschedparam, "pthread_attr_setschedparam");
|
398 |
|
|
|
399 |
|
|
function sched_yield return int;
|
400 |
|
|
pragma Import (C, sched_yield, "sched_yield");
|
401 |
|
|
|
402 |
|
|
---------------------------
|
403 |
|
|
-- P1003.1c - Section 16 --
|
404 |
|
|
---------------------------
|
405 |
|
|
|
406 |
|
|
function pthread_attr_init (attributes : access pthread_attr_t) return int;
|
407 |
|
|
pragma Import (C, pthread_attr_init, "pthread_attr_init");
|
408 |
|
|
|
409 |
|
|
function pthread_attr_destroy
|
410 |
|
|
(attributes : access pthread_attr_t) return int;
|
411 |
|
|
pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
|
412 |
|
|
|
413 |
|
|
function pthread_attr_setdetachstate
|
414 |
|
|
(attr : access pthread_attr_t;
|
415 |
|
|
detachstate : int) return int;
|
416 |
|
|
pragma Import (C, pthread_attr_setdetachstate);
|
417 |
|
|
|
418 |
|
|
function pthread_attr_setstacksize
|
419 |
|
|
(attr : access pthread_attr_t;
|
420 |
|
|
stacksize : size_t) return int;
|
421 |
|
|
pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
|
422 |
|
|
|
423 |
|
|
function pthread_create
|
424 |
|
|
(thread : access pthread_t;
|
425 |
|
|
attributes : access pthread_attr_t;
|
426 |
|
|
start_routine : Thread_Body;
|
427 |
|
|
arg : System.Address) return int;
|
428 |
|
|
pragma Import (C, pthread_create, "pthread_create");
|
429 |
|
|
|
430 |
|
|
procedure pthread_exit (status : System.Address);
|
431 |
|
|
pragma Import (C, pthread_exit, "pthread_exit");
|
432 |
|
|
|
433 |
|
|
function pthread_self return pthread_t;
|
434 |
|
|
pragma Import (C, pthread_self, "pthread_self");
|
435 |
|
|
|
436 |
|
|
--------------------------
|
437 |
|
|
-- POSIX.1c Section 17 --
|
438 |
|
|
--------------------------
|
439 |
|
|
|
440 |
|
|
function pthread_setspecific
|
441 |
|
|
(key : pthread_key_t;
|
442 |
|
|
value : System.Address) return int;
|
443 |
|
|
pragma Import (C, pthread_setspecific, "pthread_setspecific");
|
444 |
|
|
|
445 |
|
|
function pthread_getspecific (key : pthread_key_t) return System.Address;
|
446 |
|
|
pragma Import (C, pthread_getspecific, "pthread_getspecific");
|
447 |
|
|
|
448 |
|
|
type destructor_pointer is access procedure (arg : System.Address);
|
449 |
|
|
|
450 |
|
|
function pthread_key_create
|
451 |
|
|
(key : access pthread_key_t;
|
452 |
|
|
destructor : destructor_pointer) return int;
|
453 |
|
|
pragma Import (C, pthread_key_create, "pthread_key_create");
|
454 |
|
|
|
455 |
|
|
-------------------
|
456 |
|
|
-- SGI Additions --
|
457 |
|
|
-------------------
|
458 |
|
|
|
459 |
|
|
-- Non portable SGI 6.5 additions to the pthread interface must be
|
460 |
|
|
-- executed from within the context of a system scope task.
|
461 |
|
|
|
462 |
|
|
function pthread_setrunon_np (cpu : int) return int;
|
463 |
|
|
pragma Import (C, pthread_setrunon_np, "pthread_setrunon_np");
|
464 |
|
|
|
465 |
|
|
private
|
466 |
|
|
|
467 |
|
|
type array_type_1 is array (Integer range 0 .. 3) of unsigned;
|
468 |
|
|
type sigset_t is record
|
469 |
|
|
X_X_sigbits : array_type_1;
|
470 |
|
|
end record;
|
471 |
|
|
pragma Convention (C, sigset_t);
|
472 |
|
|
|
473 |
|
|
type pid_t is new long;
|
474 |
|
|
|
475 |
|
|
type time_t is new long;
|
476 |
|
|
|
477 |
|
|
type timespec is record
|
478 |
|
|
tv_sec : time_t;
|
479 |
|
|
tv_nsec : long;
|
480 |
|
|
end record;
|
481 |
|
|
pragma Convention (C, timespec);
|
482 |
|
|
|
483 |
|
|
type clockid_t is new int;
|
484 |
|
|
CLOCK_REALTIME : constant clockid_t := 1;
|
485 |
|
|
CLOCK_SGI_CYCLE : constant clockid_t := 2;
|
486 |
|
|
CLOCK_SGI_FAST : constant clockid_t := 3;
|
487 |
|
|
|
488 |
|
|
type struct_timeval is record
|
489 |
|
|
tv_sec : time_t;
|
490 |
|
|
tv_usec : time_t;
|
491 |
|
|
end record;
|
492 |
|
|
pragma Convention (C, struct_timeval);
|
493 |
|
|
|
494 |
|
|
type array_type_9 is array (Integer range 0 .. 4) of long;
|
495 |
|
|
type pthread_attr_t is record
|
496 |
|
|
X_X_D : array_type_9;
|
497 |
|
|
end record;
|
498 |
|
|
pragma Convention (C, pthread_attr_t);
|
499 |
|
|
|
500 |
|
|
type array_type_8 is array (Integer range 0 .. 1) of long;
|
501 |
|
|
type pthread_condattr_t is record
|
502 |
|
|
X_X_D : array_type_8;
|
503 |
|
|
end record;
|
504 |
|
|
pragma Convention (C, pthread_condattr_t);
|
505 |
|
|
|
506 |
|
|
type array_type_7 is array (Integer range 0 .. 1) of long;
|
507 |
|
|
type pthread_mutexattr_t is record
|
508 |
|
|
X_X_D : array_type_7;
|
509 |
|
|
end record;
|
510 |
|
|
pragma Convention (C, pthread_mutexattr_t);
|
511 |
|
|
|
512 |
|
|
type pthread_t is new unsigned;
|
513 |
|
|
|
514 |
|
|
type array_type_10 is array (Integer range 0 .. 7) of long;
|
515 |
|
|
type pthread_mutex_t is record
|
516 |
|
|
X_X_D : array_type_10;
|
517 |
|
|
end record;
|
518 |
|
|
pragma Convention (C, pthread_mutex_t);
|
519 |
|
|
|
520 |
|
|
type array_type_11 is array (Integer range 0 .. 7) of long;
|
521 |
|
|
type pthread_cond_t is record
|
522 |
|
|
X_X_D : array_type_11;
|
523 |
|
|
end record;
|
524 |
|
|
pragma Convention (C, pthread_cond_t);
|
525 |
|
|
|
526 |
|
|
type pthread_key_t is new int;
|
527 |
|
|
|
528 |
|
|
end System.OS_Interface;
|