1 ------------------------------------------------------------------------------
3 -- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS --
5 -- S Y S T E M . O S _ I N T E R F A C E --
10 -- Copyright (C) 1999-2001 Free Software Foundation, Inc. --
12 -- GNARL is free software; you can redistribute it and/or modify it under --
13 -- terms of the GNU General Public License as published by the Free Soft- --
14 -- ware Foundation; either version 2, or (at your option) any later ver- --
15 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
16 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
17 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
18 -- for more details. You should have received a copy of the GNU General --
19 -- Public License distributed with GNARL; see file COPYING. If not, write --
20 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
21 -- MA 02111-1307, USA. --
23 -- As a special exception, if other files instantiate generics from this --
24 -- unit, or you link this unit with other files to produce an executable, --
25 -- this unit does not by itself cause the resulting executable to be --
26 -- covered by the GNU General Public License. This exception does not --
27 -- however invalidate any other reasons why the executable file might be --
28 -- covered by the GNU Public License. --
30 -- GNARL was developed by the GNARL team at Florida State University. It is --
31 -- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
32 -- State University (http://www.gnat.com). --
34 ------------------------------------------------------------------------------
36 -- This is a UnixWare (Native) version of this package
39 -- Turn off polling, we do not want ATC polling to take place during
40 -- tasking operations. It causes infinite loops and other problems.
44 package body System.OS_Interface is
52 function To_Duration (TS : timespec) return Duration is
54 return Duration (TS.tv_sec) + Duration (TS.tv_nsec) / 10#1#E9;
57 function To_Duration (TV : struct_timeval) return Duration is
59 return Duration (TV.tv_sec) + Duration (TV.tv_usec) / 10#1#E6;
66 function To_Timespec (D : Duration) return timespec is
71 S := time_t (Long_Long_Integer (D));
72 F := D - Duration (S);
74 -- If F has negative value due to a round-up, adjust for positive F
82 return timespec' (tv_sec => S,
83 tv_nsec => long (Long_Long_Integer (F * 10#1#E9)));
90 function To_Timeval (D : Duration) return struct_timeval is
95 S := long (Long_Long_Integer (D));
96 F := D - Duration (S);
98 -- If F has negative value due to a round-up, adjust for positive F
106 return struct_timeval' (tv_sec => S,
107 tv_usec => long (Long_Long_Integer (F * 10#1#E6)));
114 function clock_gettime
115 (clock_id : clockid_t;
116 tp : access timespec) return int
119 tv : aliased struct_timeval;
121 function gettimeofday
122 (tv : access struct_timeval;
123 tz : System.Address := System.Null_Address) return int;
124 pragma Import (C, gettimeofday, "gettimeofday");
127 Result := gettimeofday (tv'Unchecked_Access);
128 tp.all := To_Timespec (To_Duration (tv));
132 ---------------------------
133 -- POSIX.1c Section 3 --
134 ---------------------------
136 function sigwait (set : access sigset_t; sig : access Signal) return int is
139 function sigwait (set : access sigset_t) return int;
140 pragma Import (C, sigwait, "sigwait");
143 Result := sigwait (set);
150 sig.all := Signal (Result);
154 function pthread_kill (thread : pthread_t; sig : Signal) return int is
155 function pthread_kill_base
156 (thread : access pthread_t; sig : access Signal) return int;
157 pragma Import (C, pthread_kill_base, "pthread_kill");
159 thr : aliased pthread_t := thread;
160 signo : aliased Signal := sig;
163 return pthread_kill_base (thr'Unchecked_Access, signo'Unchecked_Access);
166 function Get_Stack_Base (thread : pthread_t) return Address is
171 procedure pthread_init is
176 end System.OS_Interface;