------------------------------------------------------------------------------ -- -- -- 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 is an Irix (old pthread library) 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; with Interfaces.C; with Interfaces.C.Strings; package System.OS_Interface is pragma Preelaborate; pragma Linker_Options ("-lathread"); 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 chars_ptr is Interfaces.C.Strings.chars_ptr; ----------- -- Errno -- ----------- function errno return int; pragma Import (C, errno, "__get_errno"); EINTR : constant := 4; -- interrupted system call EAGAIN : constant := 11; -- No more processes ENOMEM : constant := 12; -- Not enough core EINVAL : constant := 22; -- Invalid argument ETIMEDOUT : constant := 145; -- Connection timed out ------------- -- 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 (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 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 SIGUSR1 : constant := 16; -- user defined signal 1 SIGUSR2 : constant := 17; -- user defined signal 2 SIGCLD : constant := 18; -- alias for SIGCHLD SIGCHLD : constant := 18; -- child status change SIGPWR : constant := 19; -- power-fail restart SIGWINCH : constant := 20; -- window size change SIGURG : constant := 21; -- urgent condition on IO channel SIGPOLL : constant := 22; -- pollable event occurred SIGIO : constant := 22; -- I/O possible (Solaris SIGPOLL alias) SIGSTOP : constant := 23; -- stop (cannot be caught or ignored) SIGTSTP : constant := 24; -- user stop requested from tty SIGCONT : constant := 25; -- stopped process has been continued SIGTTIN : constant := 26; -- background tty read attempted SIGTTOU : constant := 27; -- background tty write attempted SIGVTALRM : constant := 28; -- virtual timer expired SIGPROF : constant := 29; -- profiling timer expired SIGXCPU : constant := 30; -- CPU time limit exceeded SIGXFSZ : constant := 31; -- filesize limit exceeded SIGK32 : constant := 32; -- reserved for kernel (IRIX) SIGCKPT : constant := 33; -- Checkpoint warning SIGRESTART : constant := 34; -- Restart warning SIGUME : constant := 35; -- Uncorrectable memory error -- Signals defined for Posix 1003.1c. SIGPTINTR : constant := 47; SIGPTRESCHED : constant := 48; -- Posix 1003.1b signals SIGRTMIN : constant := 49; -- Posix 1003.1b signals SIGRTMAX : constant := 64; -- Posix 1003.1b signals type sigset_t is private; type sigset_t_ptr is access all sigset_t; 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 siginfo_t is record si_signo : int; si_code : int; si_errno : int; bit_field_substitute_1 : String (1 .. 116); end record; pragma Convention (C, siginfo_t); type array_type_2 is array (Integer range 0 .. 1) of int; type struct_sigaction is record sa_flags : int; sa_handler : System.Address; sa_mask : sigset_t; sa_resv : array_type_2; 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; function sigaction (sig : Signal; act : struct_sigaction_ptr; oact : struct_sigaction_ptr := null) return int; pragma Import (C, sigaction, "sigaction"); ---------- -- Time -- ---------- type time_t is new int; type timespec is record tv_sec : time_t; tv_nsec : long; end record; pragma Convention (C, timespec); type timespec_ptr is access all timespec; function To_Duration (TS : timespec) return Duration; pragma Inline (To_Duration); function To_Timespec (D : Duration) return timespec; pragma Inline (To_Timespec); type timer_t is new Integer; type clockid_t is private; CLOCK_REALTIME : constant clockid_t; CLOCK_SGI_FAST : constant clockid_t; CLOCK_SGI_CYCLE : constant clockid_t; SGI_CYCLECNTR_SIZE : constant := 165; function syssgi (request : Interfaces.C.int) return Interfaces.C.ptrdiff_t; pragma Import (C, syssgi, "syssgi"); function clock_gettime (clock_id : clockid_t; tp : access timespec) return int; pragma Import (C, clock_gettime, "clock_gettime"); function clock_getres (clock_id : clockid_t; tp : access timespec) return int; pragma Import (C, clock_getres, "clock_getres"); type struct_timeval is record tv_sec : time_t; tv_usec : time_t; end record; pragma Convention (C, struct_timeval); 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"); ------------------------- -- Priority Scheduling -- ------------------------- SCHED_FIFO : constant := 0; SCHED_RR : constant := 0; SCHED_OTHER : constant := 0; ------------- -- 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"); --------------------------------------- -- Nonstandard Thread Initialization -- --------------------------------------- procedure pthread_init; pragma Inline (pthread_init); -- This is a dummy procedure to share some GNULLI files ------------- -- Threads -- ------------- type Thread_Body is access function (arg : System.Address) return System.Address; type pthread_t is private; -- thread identifier subtype Thread_Id is pthread_t; type pthread_mutex_t is private; -- mutex identifier type pthread_cond_t is private; -- cond identifier type pthread_attr_t is private; -- pthread attributes type pthread_mutexattr_t is private; -- mutex attributes type pthread_condattr_t is private; -- mutex attributes type sem_t is private; -- semaphore identifier type pthread_key_t is private; -- per thread key subtype pthread_once_t is int; -- dynamic package initialization subtype resource_t is long; -- sproc. resource info. type start_addr is access function (arg : Address) return Address; type sproc_start_addr is access function (arg : Address) return int; type callout_addr is access function (arg : Address; arg1 : Address) return Address; -- SGI specific types subtype sproc_t is Address; -- sproc identifier subtype sproc_attr_t is Address; -- sproc attributes subtype spcb_p is Address; subtype ptcb_p is Address; -- Pthread Error Types FUNC_OK : constant := 0; FUNC_ERR : constant := -1; -- pthread run-time initialization data structure type pthread_init_struct is record conf_initsize : int; -- shared area size max_sproc_count : int; -- maximum number of sprocs sproc_stack_size : size_t; -- sproc stack size os_default_priority : int; -- default IRIX pri for main process os_sched_signal : int; -- default OS scheduling signal guard_pages : int; -- number of guard pages per stack init_sproc_count : int; -- initial number of sprocs end record; -- -- Pthread Attribute Initialize / Destroy -- function pthread_attr_init (attr : access pthread_attr_t) return int; pragma Import (C, pthread_attr_init, "pthread_attr_init"); function pthread_attr_destroy (attr : access pthread_attr_t) return int; pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy"); -- -- Thread Attributes -- 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_attr_setdetachstate (attr : access pthread_attr_t; detachstate : int) return int; pragma Import (C, pthread_attr_setdetachstate); function pthread_attr_setname (attr : access pthread_attr_t; name : chars_ptr) return int; pragma Import (C, pthread_attr_setname, "pthread_attr_setname"); -- -- Thread Scheduling Attributes -- 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; inherit : int) return int; pragma Import (C, pthread_attr_setinheritsched, "pthread_attr_setinheritsched"); function pthread_attr_setsched (attr : access pthread_attr_t; scheduler : int) return int; pragma Import (C, pthread_attr_setsched, "pthread_attr_setsched"); function pthread_attr_setprio (attr : access pthread_attr_t; priority : int) return int; pragma Import (C, pthread_attr_setprio, "pthread_attr_setprio"); -- -- SGI Extensions to Thread Attributes -- -- Bound to sproc attribute values PTHREAD_BOUND : constant := 1; PTHREAD_NOT_BOUND : constant := 0; function pthread_attr_setresources (attr : access pthread_attr_t; resources : resource_t) return int; pragma Import (C, pthread_attr_setresources, "pthread_attr_setresources"); function pthread_attr_set_boundtosproc (attr : access pthread_attr_t; bound_to_sproc : int) return int; pragma Import (C, pthread_attr_set_boundtosproc, "pthread_attr_set_boundtosproc"); function pthread_attr_set_bsproc (attr : access pthread_attr_t; bsproc : spcb_p) return int; pragma Import (C, pthread_attr_set_bsproc, "pthread_attr_set_bsproc"); function pthread_attr_set_tslice (attr : access pthread_attr_t; ts_interval : access struct_timeval) return int; pragma Import (C, pthread_attr_set_tslice, "pthread_attr_set_tslice"); -- -- Thread Creation & Management -- function pthread_create (thread : access pthread_t; attr : access pthread_attr_t; start_routine : start_addr; arg : Address) return int; pragma Import (C, pthread_create, "pthread_create"); procedure pthread_exit (status : Address); pragma Import (C, pthread_exit, "pthread_exit"); procedure pthread_yield (arg : Address := System.Null_Address); pragma Import (C, pthread_yield, "pthread_yield"); function pthread_self return pthread_t; pragma Import (C, pthread_self, "pthread_self"); function pthread_kill (thread : pthread_t; sig : int) return int; pragma Import (C, pthread_kill, "pthread_kill"); -- -- SGI Extensions to POSIX thread operations -- function pthread_setprio (thread : pthread_t; priority : int) return int; pragma Import (C, pthread_setprio, "pthread_setprio"); function pthread_suspend (thread : pthread_t) return int; pragma Import (C, pthread_suspend, "pthread_suspend"); function pthread_resume (thread : pthread_t) return int; pragma Import (C, pthread_resume, "pthread_resume"); function pthread_get_current_ada_tcb return Address; pragma Import (C, pthread_get_current_ada_tcb); function pthread_set_ada_tcb (thread : pthread_t; data : Address) return int; pragma Import (C, pthread_set_ada_tcb, "pthread_set_ada_tcb"); -- Mutex Initialization / Destruction 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_mutexattr_setqueueorder (attr : access pthread_mutexattr_t; order : int) return int; pragma Import (C, pthread_mutexattr_setqueueorder); function pthread_mutexattr_setceilingprio (attr : access pthread_mutexattr_t; priority : int) return int; pragma Import (C, pthread_mutexattr_setceilingprio); -- Mutex Attributes -- Threads queueing order MUTEX_PRIORITY : constant := 0; -- wait in priority order MUTEX_FIFO : constant := 1; -- first-in-first-out MUTEX_PRIORITY_INHERIT : constant := 2; -- priority inhertance mutex MUTEX_PRIORITY_CEILING : constant := 3; -- priority ceiling mutex -- Mutex debugging options MUTEX_NO_DEBUG : constant := 0; -- no debugging on mutex MUTEX_DEBUG : constant := 1; -- debugging is on -- Mutex spin on lock operations MUTEX_NO_SPIN : constant := 0; -- no spin, try once only MUTEX_SPIN_ONLY : constant := -1; -- spin forever -- cnt > 0, limited spin -- Mutex sharing attributes MUTEX_SHARED : constant := 0; -- shared between processes MUTEX_NOTSHARED : constant := 1; -- not shared between processes -- Mutex Operations 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"); -- Condition Initialization / Destruction 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"); -- Condition Attributes COND_PRIORITY : constant := 0; -- wait in priority order COND_FIFO : constant := 1; -- first-in-first-out -- Condition debugging options COND_NO_DEBUG : constant := 0; -- no debugging on mutex COND_DEBUG : constant := 1; -- debugging is on -- Condition sharing attributes COND_SHARED : constant := 0; -- shared between processes COND_NOTSHARED : constant := 1; -- not shared between processes -- Condition Operations 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 struct_timeval) return int; pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait"); -- Thread-Specific Data type foo_h_proc_1 is access procedure (value : Address); function pthread_key_create (key : access pthread_key_t; destructor : foo_h_proc_1) return int; pragma Import (C, pthread_key_create, "pthread_key_create"); function pthread_setspecific (key : pthread_key_t; value : Address) return int; pragma Import (C, pthread_setspecific, "pthread_setspecific"); function pthread_getspecific (key : pthread_key_t; value : access Address) return int; pragma Import (C, pthread_getspecific, "pthread_getspecific"); type foo_h_proc_2 is access procedure; function pthread_exec_begin (init : access pthread_init_struct) return int; pragma Import (C, pthread_exec_begin, "pthread_exec_begin"); function sproc_create (sproc_id : access sproc_t; attr : access sproc_attr_t; start_routine : sproc_start_addr; arg : Address) return int; pragma Import (C, sproc_create, "sproc_create"); function sproc_self return sproc_t; pragma Import (C, sproc_self, "sproc_self"); -- if equal fast TRUE is returned - common case -- if not equal thread resource must NOT be null in order to compare bits -- -- Sproc attribute initialize / destroy -- function sproc_attr_init (attr : access sproc_attr_t) return int; pragma Import (C, sproc_attr_init, "sproc_attr_init"); function sproc_attr_destroy (attr : access sproc_attr_t) return int; pragma Import (C, sproc_attr_destroy, "sproc_attr_destroy"); function sproc_attr_setresources (attr : access sproc_attr_t; resources : resource_t) return int; pragma Import (C, sproc_attr_setresources, "sproc_attr_setresources"); function sproc_attr_getresources (attr : access sproc_attr_t; resources : access resource_t) return int; pragma Import (C, sproc_attr_getresources, "sproc_attr_getresources"); function sproc_attr_setcpu (attr : access sproc_attr_t; cpu_num : int) return int; pragma Import (C, sproc_attr_setcpu, "sproc_attr_setcpu"); function sproc_attr_getcpu (attr : access sproc_attr_t; cpu_num : access int) return int; pragma Import (C, sproc_attr_getcpu, "sproc_attr_getcpu"); function sproc_attr_setresident (attr : access sproc_attr_t; resident : int) return int; pragma Import (C, sproc_attr_setresident, "sproc_attr_setresident"); function sproc_attr_getresident (attr : access sproc_attr_t; resident : access int) return int; pragma Import (C, sproc_attr_getresident, "sproc_attr_getresident"); function sproc_attr_setname (attr : access sproc_attr_t; name : chars_ptr) return int; pragma Import (C, sproc_attr_setname, "sproc_attr_setname"); function sproc_attr_getname (attr : access sproc_attr_t; name : chars_ptr) return int; pragma Import (C, sproc_attr_getname, "sproc_attr_getname"); function sproc_attr_setstacksize (attr : access sproc_attr_t; stacksize : size_t) return int; pragma Import (C, sproc_attr_setstacksize, "sproc_attr_setstacksize"); function sproc_attr_getstacksize (attr : access sproc_attr_t; stacksize : access size_t) return int; pragma Import (C, sproc_attr_getstacksize, "sproc_attr_getstacksize"); function sproc_attr_setprio (attr : access sproc_attr_t; priority : int) return int; pragma Import (C, sproc_attr_setprio, "sproc_attr_setprio"); function sproc_attr_getprio (attr : access sproc_attr_t; priority : access int) return int; pragma Import (C, sproc_attr_getprio, "sproc_attr_getprio"); function sproc_attr_setbthread (attr : access sproc_attr_t; bthread : ptcb_p) return int; pragma Import (C, sproc_attr_setbthread, "sproc_attr_setbthread"); function sproc_attr_getbthread (attr : access sproc_attr_t; bthread : access ptcb_p) return int; pragma Import (C, sproc_attr_getbthread, "sproc_attr_getbthread"); SPROC_NO_RESOURCES : constant := 0; SPROC_ANY_CPU : constant := -1; SPROC_MY_PRIORITY : constant := -1; SPROC_SWAPPED : constant := 0; SPROC_RESIDENT : constant := 1; type isr_address is access procedure; function intr_attach (sig : int; isr : isr_address) return int; pragma Import (C, intr_attach, "intr_attach"); Intr_Attach_Reset : constant Boolean := False; -- True if intr_attach is reset after an interrupt handler is called function intr_exchange (sig : int; isr : isr_address; oisr : access isr_address) return int; pragma Import (C, intr_exchange, "intr_exchange"); function intr_current_isr (sig : int; oisr : access isr_address) return int; pragma Import (C, intr_current_isr, "intr_current_isr"); private type clockid_t is new int; CLOCK_REALTIME : constant clockid_t := 1; CLOCK_SGI_CYCLE : constant clockid_t := 2; CLOCK_SGI_FAST : constant clockid_t := 3; type pthread_t is new Address; -- thread identifier type pthread_mutex_t is new Address; -- mutex identifier type pthread_cond_t is new Address; -- cond identifier type pthread_attr_t is new Address; -- pthread attributes type pthread_mutexattr_t is new Address; -- mutex attributes type pthread_condattr_t is new Address; -- mutex attributes type sem_t is new Address; -- semaphore identifier type pthread_key_t is new Address; -- per thread key type sigbits_t is array (Integer range 0 .. 3) of unsigned; type sigset_t is record sigbits : sigbits_t; end record; pragma Convention (C, sigset_t); type pid_t is new long; end System.OS_Interface;