570 lines
19 KiB
Ada
570 lines
19 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNU ADA 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) 1995-2004, 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, 59 Temple Place - Suite 330, Boston, --
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-- MA 02111-1307, 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 a Solaris (native) version of this package
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-- This package includes 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 ("-lposix4");
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pragma Linker_Options ("-lthread");
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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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EAGAIN : constant := 11;
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EINTR : constant := 4;
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EINVAL : constant := 22;
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ENOMEM : constant := 12;
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ETIME : constant := 62;
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ETIMEDOUT : constant := 145;
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-------------
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-- Signals --
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-------------
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Max_Interrupt : constant := 45;
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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 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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SIGWAITING : constant := 32; -- process's lwps blocked (Solaris)
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SIGLWP : constant := 33; -- used by thread library (Solaris)
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SIGFREEZE : constant := 34; -- used by CPR (Solaris)
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SIGTHAW : constant := 35; -- used by CPR (Solaris)
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SIGCANCEL : constant := 36; -- thread cancellation signal (libthread)
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type Signal_Set is array (Natural range <>) of Signal;
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Unmasked : constant Signal_Set := (SIGTRAP, SIGLWP, SIGPROF);
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-- Following signals should not be disturbed.
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-- See c-posix-signals.c in FLORIST
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Reserved : constant Signal_Set :=
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(SIGKILL, SIGSTOP, SIGWAITING, SIGCANCEL, SIGTRAP, SIGSEGV);
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type sigset_t is private;
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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 union_type_3 is new String (1 .. 116);
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type siginfo_t is record
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si_signo : int;
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si_code : int;
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si_errno : int;
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X_data : union_type_3;
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end record;
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pragma Convention (C, siginfo_t);
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-- The types mcontext_t and gregset_t are part of the ucontext_t
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-- information, which is specific to Solaris2.4 for SPARC
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-- The ucontext_t info seems to be used by the handler
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-- for SIGSEGV to decide whether it is a Storage_Error (stack overflow) or
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-- a Constraint_Error (bad pointer). The original code that did this
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-- is suspect, so it is not clear whether we really need this part of
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-- the signal context information, or perhaps something else.
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-- More analysis is needed, after which these declarations may need to
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-- be changed.
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FPE_INTDIV : constant := 1; -- integer divide by zero
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FPE_INTOVF : constant := 2; -- integer overflow
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FPE_FLTDIV : constant := 3; -- floating point divide by zero
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FPE_FLTOVF : constant := 4; -- floating point overflow
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FPE_FLTUND : constant := 5; -- floating point underflow
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FPE_FLTRES : constant := 6; -- floating point inexact result
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FPE_FLTINV : constant := 7; -- invalid floating point operation
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FPE_FLTSUB : constant := 8; -- subscript out of range
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type greg_t is new int;
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type gregset_t is array (0 .. 18) of greg_t;
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type union_type_2 is new String (1 .. 128);
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type record_type_1 is record
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fpu_fr : union_type_2;
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fpu_q : System.Address;
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fpu_fsr : unsigned;
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fpu_qcnt : unsigned_char;
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fpu_q_entrysize : unsigned_char;
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fpu_en : unsigned_char;
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end record;
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pragma Convention (C, record_type_1);
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type array_type_7 is array (Integer range 0 .. 20) of long;
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type mcontext_t is record
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gregs : gregset_t;
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gwins : System.Address;
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fpregs : record_type_1;
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filler : array_type_7;
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end record;
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pragma Convention (C, mcontext_t);
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type record_type_2 is record
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ss_sp : System.Address;
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ss_size : int;
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ss_flags : int;
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end record;
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pragma Convention (C, record_type_2);
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type array_type_8 is array (Integer range 0 .. 22) of long;
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type ucontext_t is record
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uc_flags : unsigned_long;
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uc_link : System.Address;
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uc_sigmask : sigset_t;
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uc_stack : record_type_2;
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uc_mcontext : mcontext_t;
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uc_filler : array_type_8;
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end record;
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pragma Convention (C, ucontext_t);
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type Signal_Handler is access procedure
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(signo : Signal;
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info : access siginfo_t;
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context : access ucontext_t);
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type union_type_1 is new plain_char;
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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) 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 clockid_t is private;
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CLOCK_REALTIME : constant clockid_t;
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function clock_gettime
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(clock_id : clockid_t; 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; res : 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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-- This is needed on systems that do not have clock_gettime()
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-- but do have gettimeofday().
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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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-- 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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THR_DETACHED : constant := 64;
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THR_BOUND : constant := 1;
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THR_NEW_LWP : constant := 2;
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USYNC_THREAD : constant := 0;
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type thread_t is new unsigned;
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subtype Thread_Id is thread_t;
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-- These types should be commented ???
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function To_thread_t is new Unchecked_Conversion (Integer, thread_t);
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type mutex_t is limited private;
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type cond_t is limited private;
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type thread_key_t is private;
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function thr_create
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(stack_base : System.Address;
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stack_size : size_t;
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start_routine : Thread_Body;
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arg : System.Address;
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flags : int;
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new_thread : access thread_t) return int;
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pragma Import (C, thr_create, "thr_create");
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function thr_min_stack return size_t;
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pragma Import (C, thr_min_stack, "thr_min_stack");
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function thr_self return thread_t;
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pragma Import (C, thr_self, "thr_self");
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function mutex_init
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(mutex : access mutex_t;
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mtype : int;
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arg : System.Address) return int;
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pragma Import (C, mutex_init, "mutex_init");
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function mutex_destroy (mutex : access mutex_t) return int;
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pragma Import (C, mutex_destroy, "mutex_destroy");
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function mutex_lock (mutex : access mutex_t) return int;
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pragma Import (C, mutex_lock, "mutex_lock");
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function mutex_unlock (mutex : access mutex_t) return int;
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pragma Import (C, mutex_unlock, "mutex_unlock");
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function cond_init
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(cond : access cond_t;
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ctype : int;
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arg : int) return int;
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pragma Import (C, cond_init, "cond_init");
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function cond_wait
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(cond : access cond_t; mutex : access mutex_t) return int;
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pragma Import (C, cond_wait, "cond_wait");
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function cond_timedwait
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(cond : access cond_t;
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mutex : access mutex_t;
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abstime : access timespec) return int;
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pragma Import (C, cond_timedwait, "cond_timedwait");
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function cond_signal (cond : access cond_t) return int;
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pragma Import (C, cond_signal, "cond_signal");
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function cond_destroy (cond : access cond_t) return int;
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pragma Import (C, cond_destroy, "cond_destroy");
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function thr_setspecific
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(key : thread_key_t; value : System.Address) return int;
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pragma Import (C, thr_setspecific, "thr_setspecific");
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function thr_getspecific
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(key : thread_key_t;
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value : access System.Address) return int;
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pragma Import (C, thr_getspecific, "thr_getspecific");
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function thr_keycreate
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(key : access thread_key_t; destructor : System.Address) return int;
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pragma Import (C, thr_keycreate, "thr_keycreate");
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function thr_setprio (thread : thread_t; priority : int) return int;
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pragma Import (C, thr_setprio, "thr_setprio");
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procedure thr_exit (status : System.Address);
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pragma Import (C, thr_exit, "thr_exit");
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function thr_setconcurrency (new_level : int) return int;
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pragma Import (C, thr_setconcurrency, "thr_setconcurrency");
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function sigwait (set : access sigset_t; sig : access Signal) return int;
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pragma Import (C, sigwait, "__posix_sigwait");
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function thr_kill (thread : thread_t; sig : Signal) return int;
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pragma Import (C, thr_kill, "thr_kill");
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type sigset_t_ptr is access all sigset_t;
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function thr_sigsetmask
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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, thr_sigsetmask, "thr_sigsetmask");
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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, "thr_sigsetmask");
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function thr_suspend (target_thread : thread_t) return int;
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pragma Import (C, thr_suspend, "thr_suspend");
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function thr_continue (target_thread : thread_t) return int;
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pragma Import (C, thr_continue, "thr_continue");
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procedure thr_yield;
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pragma Import (C, thr_yield, "thr_yield");
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---------
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-- LWP --
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---------
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P_PID : constant := 0;
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P_LWPID : constant := 8;
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PC_GETCID : constant := 0;
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PC_GETCLINFO : constant := 1;
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PC_SETPARMS : constant := 2;
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PC_GETPARMS : constant := 3;
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PC_ADMIN : constant := 4;
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PC_CLNULL : constant := -1;
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RT_NOCHANGE : constant := -1;
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RT_TQINF : constant := -2;
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RT_TQDEF : constant := -3;
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PC_CLNMSZ : constant := 16;
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PC_VERSION : constant := 1;
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type lwpid_t is new int;
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type pri_t is new short;
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type id_t is new long;
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P_MYID : constant := -1;
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-- the specified LWP or process is the current one.
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type struct_pcinfo is record
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pc_cid : id_t;
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pc_clname : String (1 .. PC_CLNMSZ);
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rt_maxpri : short;
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end record;
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pragma Convention (C, struct_pcinfo);
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type struct_pcparms is record
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pc_cid : id_t;
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rt_pri : pri_t;
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rt_tqsecs : long;
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rt_tqnsecs : long;
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end record;
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pragma Convention (C, struct_pcparms);
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function priocntl
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(ver : int;
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id_type : int;
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id : lwpid_t;
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cmd : int;
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arg : System.Address) return Interfaces.C.long;
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pragma Import (C, priocntl, "__priocntl");
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function lwp_self return lwpid_t;
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pragma Import (C, lwp_self, "_lwp_self");
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type processorid_t is new int;
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type processorid_t_ptr is access all processorid_t;
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-- Constants for function processor_bind
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PBIND_QUERY : constant processorid_t := -2;
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-- the processor bindings are not changed.
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PBIND_NONE : constant processorid_t := -1;
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-- the processor bindings of the specified LWPs are cleared.
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-- Flags for function p_online
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PR_OFFLINE : constant int := 1;
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-- processor is offline, as quiet as possible
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PR_ONLINE : constant int := 2;
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-- processor online
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PR_STATUS : constant int := 3;
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-- value passed to p_online to request status
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function p_online (processorid : processorid_t; flag : int) return int;
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pragma Import (C, p_online, "p_online");
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function processor_bind
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(id_type : int;
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id : id_t;
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proc_id : processorid_t;
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obind : processorid_t_ptr) return int;
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pragma Import (C, processor_bind, "processor_bind");
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procedure pthread_init;
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-- dummy procedure to share s-intman.adb with other Solaris targets.
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private
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type array_type_1 is array (0 .. 3) of unsigned_long;
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type sigset_t is record
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X_X_sigbits : array_type_1;
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end record;
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pragma Convention (C, sigset_t);
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type pid_t is new long;
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type time_t is new long;
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type timespec is record
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tv_sec : time_t;
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tv_nsec : long;
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end record;
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pragma Convention (C, timespec);
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type clockid_t is new int;
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CLOCK_REALTIME : constant clockid_t := 0;
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type struct_timeval is record
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tv_sec : long;
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tv_usec : long;
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end record;
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pragma Convention (C, struct_timeval);
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type array_type_9 is array (0 .. 3) of unsigned_char;
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type record_type_3 is record
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flag : array_type_9;
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Xtype : unsigned_long;
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end record;
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pragma Convention (C, record_type_3);
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type mutex_t is record
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flags : record_type_3;
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lock : String (1 .. 8);
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data : String (1 .. 8);
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end record;
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pragma Convention (C, mutex_t);
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type cond_t is record
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flag : array_type_9;
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Xtype : unsigned_long;
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data : String (1 .. 8);
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end record;
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pragma Convention (C, cond_t);
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type thread_key_t is new unsigned;
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end System.OS_Interface;
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