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+------------------------------------------------------------------------------
+-- --
+-- GNAT 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) 1995-2012, Free Software Foundation, Inc. --
+-- --
+-- GNAT 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 3, or (at your option) any later ver- --
+-- sion. GNAT 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. --
+-- --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception, --
+-- version 3.1, as published by the Free Software Foundation. --
+-- --
+-- You should have received a copy of the GNU General Public License and --
+-- a copy of the GCC Runtime Library Exception along with this program; --
+-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
+-- <http://www.gnu.org/licenses/>. --
+-- --
+-- GNARL was developed by the GNARL team at Florida State University. --
+-- Extensive contributions were provided by Ada Core Technologies, Inc. --
+-- --
+------------------------------------------------------------------------------
+
+-- This is a HPUX 11.0 (Native THREADS) version of this package
+
+-- This package encapsulates all direct interfaces to OS services that are
+-- needed by the tasking run-time (libgnarl).
+
+-- 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 Ada.Unchecked_Conversion;
+
+with Interfaces.C;
+
+package System.OS_Interface is
+ pragma Preelaborate;
+
+ pragma Linker_Options ("-lpthread");
+
+ 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;
+ ETIMEDOUT : constant := 238;
+
+ -------------
+ -- 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)
+ SIGCANCEL : constant := 35; -- used for pthread cancellation.
+ SIGGFAULT : constant := 36; -- Graphics framebuffer fault
+
+ SIGADAABORT : constant := SIGABRT;
+ -- Note: on other targets, we usually use SIGABRT, but on HPUX, it
+ -- appears that SIGABRT can't be used in sigwait(), so we use SIGTERM.
+ -- Do we use SIGTERM or SIGABRT???
+
+ type Signal_Set is array (Natural range <>) of Signal;
+
+ Unmasked : constant Signal_Set :=
+ (SIGABRT, SIGPIPE, SIGBUS, SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP, SIGPROF,
+ SIGALRM, SIGVTALRM, SIGIO, SIGCHLD);
+
+ Reserved : constant Signal_Set := (SIGKILL, SIGSTOP);
+
+ 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 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_SIGINFO : constant := 16#10#;
+ SA_ONSTACK : constant := 16#01#;
+
+ SIG_BLOCK : constant := 0;
+ SIG_UNBLOCK : constant := 1;
+ SIG_SETMASK : constant := 2;
+
+ SIG_DFL : constant := 0;
+ SIG_IGN : constant := 1;
+
+ 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 := True;
+ -- Indicates whether time slicing is supported
+
+ type timespec is private;
+
+ type clockid_t is new int;
+
+ 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;
+ res : access timespec) return int;
+ pragma Import (C, clock_getres, "clock_getres");
+
+ 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_timezone_ptr is access all struct_timezone;
+
+ -------------------------
+ -- Priority Scheduling --
+ -------------------------
+
+ SCHED_FIFO : constant := 0;
+ SCHED_RR : constant := 1;
+ SCHED_OTHER : constant := 2;
+
+ function To_Target_Priority
+ (Prio : System.Any_Priority) return Interfaces.C.int;
+ -- Maps System.Any_Priority to a POSIX priority
+
+ -------------
+ -- 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");
+
+ ---------
+ -- LWP --
+ ---------
+
+ function lwp_self return System.Address;
+ pragma Import (C, lwp_self, "_lwp_self");
+
+ -------------
+ -- Threads --
+ -------------
+
+ type Thread_Body is access
+ function (arg : System.Address) return System.Address;
+ pragma Convention (C, Thread_Body);
+
+ function Thread_Body_Access is new
+ Ada.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;
+
+ PTHREAD_CREATE_DETACHED : constant := 16#de#;
+
+ PTHREAD_SCOPE_PROCESS : constant := 2;
+ PTHREAD_SCOPE_SYSTEM : constant := 1;
+
+ -- Read/Write lock not supported on HPUX. To add support both types
+ -- pthread_rwlock_t and pthread_rwlockattr_t must properly be defined
+ -- with the associated routines pthread_rwlock_[init/destroy] and
+ -- pthread_rwlock_[rdlock/wrlock/unlock].
+
+ subtype pthread_rwlock_t is pthread_mutex_t;
+ subtype pthread_rwlockattr_t is pthread_mutexattr_t;
+
+ -----------
+ -- Stack --
+ -----------
+
+ type stack_t is record
+ ss_sp : System.Address;
+ ss_flags : int;
+ ss_size : size_t;
+ end record;
+ pragma Convention (C, stack_t);
+
+ function sigaltstack
+ (ss : not null access stack_t;
+ oss : access stack_t) return int;
+ pragma Import (C, sigaltstack, "sigaltstack");
+
+ Alternate_Stack : aliased System.Address;
+ pragma Import (C, Alternate_Stack, "__gnat_alternate_stack");
+ -- The alternate signal stack for stack overflows
+
+ Alternate_Stack_Size : constant := 128 * 1024;
+ -- This must be in keeping with init.c:__gnat_alternate_stack
+
+ Stack_Base_Available : constant Boolean := False;
+ -- Indicates whether the stack base is available on this target
+
+ 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
+
+ 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_READ;
+ PROT_OFF : constant := PROT_ALL;
+
+ function mprotect (addr : Address; len : size_t; prot : int) return int;
+ pragma Import (C, mprotect);
+
+ ---------------------------------------
+ -- 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, "sigwait");
+
+ function pthread_kill
+ (thread : pthread_t;
+ sig : Signal) return int;
+ pragma Import (C, pthread_kill, "pthread_kill");
+
+ function pthread_sigmask
+ (how : int;
+ set : access sigset_t;
+ oset : access sigset_t) return int;
+ pragma Import (C, pthread_sigmask, "pthread_sigmask");
+
+ --------------------------
+ -- 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;
+ 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, "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;
+ 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");
+
+ Relative_Timed_Wait : constant Boolean := False;
+ -- pthread_cond_timedwait requires an absolute delay time
+
+ --------------------------
+ -- POSIX.1c Section 13 --
+ --------------------------
+
+ PTHREAD_PRIO_NONE : constant := 16#100#;
+ PTHREAD_PRIO_PROTECT : constant := 16#200#;
+ PTHREAD_PRIO_INHERIT : constant := 16#400#;
+
+ 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 Array_7_Int is array (0 .. 6) of int;
+ type struct_sched_param is record
+ sched_priority : int;
+ sched_reserved : Array_7_Int;
+ end record;
+
+ function pthread_setschedparam
+ (thread : pthread_t;
+ policy : int;
+ param : access struct_sched_param)
+ return int;
+ pragma Import (C, pthread_setschedparam, "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_setinheritsched
+ (attr : access pthread_attr_t;
+ inheritsched : int) return int;
+ pragma Import (C, pthread_attr_setinheritsched);
+
+ function pthread_attr_setschedpolicy
+ (attr : access pthread_attr_t;
+ policy : int) return int;
+ pragma Import (C, pthread_attr_setschedpolicy);
+
+ function sched_yield return int;
+ pragma Import (C, sched_yield, "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_system");
+
+ 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;
+ 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_system");
+
+ 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);
+ pragma Convention (C, destructor_pointer);
+
+ 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 unsigned_int_array_8 is array (0 .. 7) of unsigned;
+ type sigset_t is record
+ sigset : unsigned_int_array_8;
+ end record;
+ pragma Convention (C_Pass_By_Copy, 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 pthread_attr_t is new int;
+ type pthread_condattr_t is new int;
+ type pthread_mutexattr_t is new int;
+ type pthread_t is new int;
+
+ type short_array is array (Natural range <>) of short;
+ type int_array is array (Natural range <>) of int;
+
+ type pthread_mutex_t is record
+ m_short : short_array (0 .. 1);
+ m_int : int;
+ m_int1 : int_array (0 .. 3);
+ m_pad : int;
+
+ m_ptr : int;
+ -- actually m_ptr is a void*, and on 32 bit ABI, m_pad is added so that
+ -- this field takes 64 bits. On 64 bit ABI, m_pad is gone, and m_ptr is
+ -- a 64 bit void*. Assume int'Size = 32.
+
+ m_int2 : int_array (0 .. 1);
+ m_int3 : int_array (0 .. 3);
+ m_short2 : short_array (0 .. 1);
+ m_int4 : int_array (0 .. 4);
+ m_int5 : int_array (0 .. 1);
+ end record;
+ for pthread_mutex_t'Alignment use System.Address'Alignment;
+ pragma Convention (C, pthread_mutex_t);
+
+ type pthread_cond_t is record
+ c_short : short_array (0 .. 1);
+ c_int : int;
+ c_int1 : int_array (0 .. 3);
+ m_pad : int;
+ m_ptr : int; -- see comment in pthread_mutex_t
+ c_int2 : int_array (0 .. 1);
+ c_int3 : int_array (0 .. 1);
+ c_int4 : int_array (0 .. 1);
+ end record;
+ for pthread_cond_t'Alignment use System.Address'Alignment;
+ pragma Convention (C, pthread_cond_t);
+
+ type pthread_key_t is new int;
+
+end System.OS_Interface;