------------------------------------------------------------------------------ -- -- -- 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) 1998-2001 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 is the DEC Unix 4.0/5.1 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 -- It is designed to be a bottom-level (leaf) package. with Interfaces.C; package System.OS_Interface is pragma Preelaborate; pragma Linker_Options ("-lpthread"); pragma Linker_Options ("-lmach"); pragma Linker_Options ("-lexc"); pragma Linker_Options ("-lrt"); 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; subtype char_array is Interfaces.C.char_array; ----------- -- Errno -- ----------- function errno return int; pragma Import (C, errno, "_Geterrno"); EAGAIN : constant := 35; EINTR : constant := 4; EINVAL : constant := 22; ENOMEM : constant := 12; ETIMEDOUT : constant := 60; ------------- -- Signals -- ------------- Max_Interrupt : constant := 48; type Signal is new int range 0 .. Max_Interrupt; 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) SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the future SIGIOT : constant := 6; -- abort (terminate) process SIGLOST : constant := 6; -- old BSD signal ?? 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 SIGIOINT : constant := 16; -- printer to backend error signal SIGSTOP : constant := 17; -- stop (cannot be caught or ignored) SIGTSTP : constant := 18; -- user stop requested from tty SIGCONT : constant := 19; -- stopped process has been continued SIGCHLD : constant := 20; -- child status change SIGTTIN : constant := 21; -- background tty read attempted SIGTTOU : constant := 22; -- background tty write attempted SIGPOLL : constant := 23; -- I/O possible, or completed SIGIO : constant := 23; -- STREAMS version of SIGPOLL SIGAIO : constant := 23; -- base lan i/o SIGPTY : constant := 23; -- pty i/o SIGXCPU : constant := 24; -- CPU time limit exceeded SIGXFSZ : constant := 25; -- filesize limit exceeded SIGVTALRM : constant := 26; -- virtual timer expired SIGPROF : constant := 27; -- profiling timer expired SIGWINCH : constant := 28; -- window size change SIGINFO : constant := 29; -- information request SIGPWR : constant := 29; -- Power Fail/Restart -- SVID3/SVR4 SIGUSR1 : constant := 30; -- user defined signal 1 SIGUSR2 : constant := 31; -- user defined signal 2 SIGRESV : constant := 32; -- reserved by Digital for future use SIGADAABORT : constant := SIGABRT; type Signal_Set is array (Natural range <>) of Signal; Unmasked : constant Signal_Set := (0 .. 0 => SIGTRAP); Reserved : constant Signal_Set := (SIGALRM, SIGABRT, SIGKILL, SIGSTOP); type sigset_t is private; function sigaddset (set : access sigset_t; sig : Signal) return int; pragma Import (C, sigaddset); function sigdelset (set : access sigset_t; sig : Signal) return int; pragma Import (C, sigdelset); function sigfillset (set : access sigset_t) return int; pragma Import (C, sigfillset); function sigismember (set : access sigset_t; sig : Signal) return int; pragma Import (C, sigismember); function sigemptyset (set : access sigset_t) return int; pragma Import (C, sigemptyset); type union_type_3 is new String (1 .. 116); type siginfo_t is record si_signo : int; si_errno : int; si_code : int; X_data : union_type_3; end record; for siginfo_t'Size use 8 * 128; pragma Convention (C, siginfo_t); type struct_sigaction is record sa_handler : System.Address; sa_mask : sigset_t; sa_flags : int; sa_signo : int; end record; pragma Convention (C, struct_sigaction); type struct_sigaction_ptr is access all struct_sigaction; SIG_BLOCK : constant := 1; SIG_UNBLOCK : constant := 2; SIG_SETMASK : constant := 3; SIG_DFL : constant := 0; SIG_IGN : constant := 1; SA_NODEFER : constant := 8; SA_SIGINFO : constant := 16#40#; function sigaction (sig : Signal; act : struct_sigaction_ptr; oact : struct_sigaction_ptr) return int; pragma Import (C, sigaction); ---------- -- Time -- ---------- type timespec is private; function nanosleep (rqtp, rmtp : access timespec) return int; pragma Import (C, 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); 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); ------------------------- -- Priority Scheduling -- ------------------------- SCHED_FIFO : constant := 1; SCHED_RR : constant := 2; SCHED_OTHER : constant := 3; SCHED_LFI : constant := 5; ------------- -- Process -- ------------- type pid_t is private; function kill (pid : pid_t; sig : Signal) return int; pragma Import (C, kill); function getpid return pid_t; pragma Import (C, getpid); BIND_NO_INHERIT : constant := 1; function bind_to_cpu (pid : pid_t; cpu_mask : unsigned_long; flag : unsigned_long := BIND_NO_INHERIT) return int; pragma Import (C, bind_to_cpu); ------------- -- 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_SCOPE_PROCESS : constant := 0; PTHREAD_SCOPE_SYSTEM : constant := 1; PTHREAD_EXPLICIT_SCHED : 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, "__sigwaitd10"); function pthread_kill (thread : pthread_t; sig : Signal) return int; pragma Import (C, 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); ---------------------------- -- POSIX.1c Section 11 -- ---------------------------- function pthread_mutexattr_init (attr : access pthread_mutexattr_t) return int; pragma Import (C, pthread_mutexattr_init); function pthread_mutexattr_destroy (attr : access pthread_mutexattr_t) return int; pragma Import (C, 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); function pthread_condattr_destroy (attr : access pthread_condattr_t) return int; pragma Import (C, 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 -- ---------------------------- function pthread_mutexattr_setprotocol (attr : access pthread_mutexattr_t; protocol : int) return int; pragma Import (C, pthread_mutexattr_setprotocol); function pthread_mutexattr_setprioceiling (attr : access pthread_mutexattr_t; prioceiling : int) return int; pragma Import (C, pthread_mutexattr_setprioceiling); type struct_sched_param is record sched_priority : int; -- scheduling priority end record; function pthread_setschedparam (thread : pthread_t; policy : int; param : access struct_sched_param) return int; pragma Import (C, pthread_setschedparam); function pthread_attr_setscope (attr : access pthread_attr_t; contentionscope : int) return int; pragma Import (C, 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); function sched_yield return int; pragma Import (C, sched_yield); --------------------------- -- P1003.1c - Section 16 -- --------------------------- function pthread_attr_init (attributes : access pthread_attr_t) return int; pragma Import (C, pthread_attr_init); function pthread_attr_destroy (attributes : access pthread_attr_t) return int; pragma Import (C, 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); private type sigset_t is new unsigned_long; type pid_t is new int; type time_t is new int; 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 := 1; type struct_timeval is record tv_sec : time_t; tv_usec : time_t; end record; pragma Convention (C, struct_timeval); type unsigned_long_array is array (Natural range <>) of unsigned_long; type pthread_t is new System.Address; type pthread_cond_t is record state : unsigned; valid : unsigned; name : System.Address; arg : unsigned; reserved1 : unsigned; sequence : unsigned_long; block : System.Address; end record; pragma Convention (C, pthread_cond_t); type pthread_attr_t is record valid : long; name : System.Address; arg : unsigned_long; reserved : unsigned_long_array (0 .. 18); end record; pragma Convention (C, pthread_attr_t); type pthread_mutex_t is record lock : unsigned; valid : unsigned; name : System.Address; arg : unsigned; depth : unsigned; sequence : unsigned_long; owner : unsigned_long; block : System.Address; end record; for pthread_mutex_t'Size use 8 * 48; pragma Convention (C, pthread_mutex_t); type pthread_mutexattr_t is record valid : long; reserved : unsigned_long_array (0 .. 14); end record; pragma Convention (C, pthread_mutexattr_t); type pthread_condattr_t is record valid : long; reserved : unsigned_long_array (0 .. 12); end record; pragma Convention (C, pthread_condattr_t); type pthread_key_t is new unsigned; end System.OS_Interface;