------------------------------------------------------------------------------ -- -- -- 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) 1991-1994, Florida State University -- -- Copyright (C) 1995-2004, 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 HP-UX 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 -- Preelaborate. This package is designed to be a bottom-level (leaf) package. with Interfaces.C; with Unchecked_Conversion; package System.OS_Interface is pragma Preelaborate; pragma Linker_Options ("-lcma"); 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"); EAGAIN : constant := 11; EINTR : constant := 4; EINVAL : constant := 22; ENOMEM : constant := 12; ETIME : constant := 52; ETIMEDOUT : constant := 238; FUNC_ERR : constant := -1; ------------- -- Signals -- ------------- Max_Interrupt : constant := 44; 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 SIGVTALRM : constant := 20; -- virtual timer alarm SIGPROF : constant := 21; -- profiling timer alarm SIGIO : constant := 22; -- asynchronous I/O SIGPOLL : constant := 22; -- pollable event occurred SIGWINCH : constant := 23; -- window size change SIGSTOP : constant := 24; -- stop (cannot be caught or ignored) SIGTSTP : constant := 25; -- user stop requested from tty SIGCONT : constant := 26; -- stopped process has been continued SIGTTIN : constant := 27; -- background tty read attempted SIGTTOU : constant := 28; -- background tty write attempted SIGURG : constant := 29; -- urgent condition on IO channel SIGLOST : constant := 30; -- remote lock lost (NFS) SIGDIL : constant := 32; -- DIL signal SIGXCPU : constant := 33; -- CPU time limit exceeded (setrlimit) SIGXFSZ : constant := 34; -- file size limit exceeded (setrlimit) SIGADAABORT : constant := SIGABRT; -- Note: on other targets, we usually use SIGABRT, but on HP/UX, it -- appears that SIGABRT can't be used in sigwait(), so we use SIGTERM. type Signal_Set is array (Natural range <>) of Signal; Unmasked : constant Signal_Set := (SIGBUS, SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP); Reserved : constant Signal_Set := (SIGKILL, SIGSTOP); type sigset_t is private; type isr_address is access procedure (sig : int); function intr_attach (sig : int; handler : isr_address) return long; Intr_Attach_Reset : constant Boolean := True; -- True if intr_attach is reset after an interrupt handler is called 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 Signal_Handler is access procedure (signo : Signal); type struct_sigaction is record sa_handler : System.Address; sa_mask : sigset_t; sa_flags : int; end record; pragma Convention (C, struct_sigaction); type struct_sigaction_ptr is access all struct_sigaction; SA_RESTART : constant := 16#40#; SA_SIGINFO : constant := 16#10#; SIG_BLOCK : constant := 0; SIG_UNBLOCK : constant := 1; SIG_SETMASK : constant := 2; SIG_DFL : constant := 0; SIG_IGN : constant := 1; SIG_ERR : constant := -1; function sigaction (sig : Signal; act : struct_sigaction_ptr; oact : struct_sigaction_ptr) return int; pragma Import (C, sigaction, "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_timeval is private; function To_Duration (TV : struct_timeval) return Duration; pragma Inline (To_Duration); function To_Timeval (D : Duration) return struct_timeval; pragma Inline (To_Timeval); ------------------------- -- Priority Scheduling -- ------------------------- 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; function Thread_Body_Access is new Unchecked_Conversion (System.Address, Thread_Body); 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; ----------- -- Stack -- ----------- function Get_Stack_Base (thread : pthread_t) return Address; pragma Inline (Get_Stack_Base); -- This is a dummy procedure to share some GNULLI files --------------------------------------- -- 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) return int; pragma Import (C, sigwait, "cma_sigwait"); function sigwait (set : access sigset_t; sig : access Signal) return int; pragma Inline (sigwait); -- DCE_THREADS has a nonstandard sigwait function pthread_kill (thread : pthread_t; sig : Signal) return int; pragma Inline (pthread_kill); -- DCE_THREADS doesn't have 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; -- DCE THREADS does not have pthread_sigmask. Instead, it uses -- sigprocmask to do the signal handling when the thread library is -- sucked in. pragma Import (C, pthread_sigmask, "sigprocmask"); -------------------------- -- POSIX.1c Section 11 -- -------------------------- function pthread_mutexattr_init (attr : access pthread_mutexattr_t) return int; -- DCE_THREADS has a nonstandard pthread_mutexattr_init. function pthread_mutexattr_destroy (attr : access pthread_mutexattr_t) return int; -- DCE_THREADS has a nonstandard pthread_mutexattr_destroy function pthread_mutex_init (mutex : access pthread_mutex_t; attr : access pthread_mutexattr_t) return int; -- DCE_THREADS has a nonstandard pthread_mutex_init function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int; -- DCE_THREADS has a nonstandard pthread_mutex_destroy function pthread_mutex_lock (mutex : access pthread_mutex_t) return int; pragma Inline (pthread_mutex_lock); -- DCE_THREADS has nonstandard pthread_mutex_lock function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int; pragma Inline (pthread_mutex_unlock); -- DCE_THREADS has nonstandard pthread_mutex_lock function pthread_condattr_init (attr : access pthread_condattr_t) return int; -- DCE_THREADS has nonstandard pthread_condattr_init function pthread_condattr_destroy (attr : access pthread_condattr_t) return int; -- DCE_THREADS has nonstandard pthread_condattr_destroy function pthread_cond_init (cond : access pthread_cond_t; attr : access pthread_condattr_t) return int; -- DCE_THREADS has nonstandard pthread_cond_init function pthread_cond_destroy (cond : access pthread_cond_t) return int; -- DCE_THREADS has nonstandard pthread_cond_destroy function pthread_cond_signal (cond : access pthread_cond_t) return int; pragma Inline (pthread_cond_signal); -- DCE_THREADS has nonstandard pthread_cond_signal function pthread_cond_wait (cond : access pthread_cond_t; mutex : access pthread_mutex_t) return int; pragma Inline (pthread_cond_wait); -- DCE_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; pragma Inline (pthread_cond_timedwait); -- DCE_THREADS has a nonstandard pthread_cond_timedwait -------------------------- -- POSIX.1c Section 13 -- -------------------------- 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 Inline (pthread_setschedparam); -- DCE_THREADS has a nonstandard pthread_setschedparam function sched_yield return int; pragma Inline (sched_yield); -- DCE_THREADS has a nonstandard sched_yield --------------------------- -- P1003.1c - Section 16 -- --------------------------- function pthread_attr_init (attributes : access pthread_attr_t) return int; pragma Inline (pthread_attr_init); -- DCE_THREADS has a nonstandard pthread_attr_init function pthread_attr_destroy (attributes : access pthread_attr_t) return int; pragma Inline (pthread_attr_destroy); -- DCE_THREADS has a nonstandard pthread_attr_destroy function pthread_attr_setstacksize (attr : access pthread_attr_t; stacksize : size_t) return int; pragma Inline (pthread_attr_setstacksize); -- DCE_THREADS has a nonstandard 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 Inline (pthread_create); -- DCE_THREADS has a nonstandard pthread_create procedure pthread_detach (thread : access pthread_t); pragma Import (C, 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"); -------------------------- -- POSIX.1c Section 17 -- -------------------------- function pthread_setspecific (key : pthread_key_t; value : System.Address) return int; pragma Inline (pthread_setspecific); -- DCE_THREADS has a nonstandard pthread_setspecific function pthread_getspecific (key : pthread_key_t) return System.Address; pragma Inline (pthread_getspecific); -- DCE_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 Inline (pthread_key_create); -- DCE_THREADS has a nonstandard pthread_key_create private type array_type_1 is array (Integer range 0 .. 7) of unsigned_long; type sigset_t is record X_X_sigbits : array_type_1; end record; pragma Convention (C, sigset_t); 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 := 1; type struct_timeval is record tv_sec : time_t; tv_usec : time_t; end record; pragma Convention (C, struct_timeval); type cma_t_address is new System.Address; type cma_t_handle is record field1 : cma_t_address; field2 : Short_Integer; field3 : Short_Integer; end record; for cma_t_handle'Size use 64; type pthread_attr_t is new cma_t_handle; pragma Convention (C_Pass_By_Copy, pthread_attr_t); type pthread_condattr_t is new cma_t_handle; pragma Convention (C_Pass_By_Copy, pthread_condattr_t); type pthread_mutexattr_t is new cma_t_handle; pragma Convention (C_Pass_By_Copy, pthread_mutexattr_t); type pthread_t is new cma_t_handle; pragma Convention (C_Pass_By_Copy, pthread_t); type pthread_mutex_t is new cma_t_handle; pragma Convention (C_Pass_By_Copy, pthread_mutex_t); type pthread_cond_t is new cma_t_handle; pragma Convention (C_Pass_By_Copy, pthread_cond_t); type pthread_key_t is new int; end System.OS_Interface;