Mercurial > hg > CbC > CbC_gcc
comparison gcc/ada/libgnarl/s-osinte__dragonfly.adb @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | |
children | 84e7813d76e9 |
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1 ------------------------------------------------------------------------------ | |
2 -- -- | |
3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- | |
4 -- -- | |
5 -- S Y S T E M . O S _ I N T E R F A C E -- | |
6 -- -- | |
7 -- B o d y -- | |
8 -- -- | |
9 -- Copyright (C) 1991-2015, Free Software Foundation, Inc. -- | |
10 -- -- | |
11 -- GNARL is free software; you can redistribute it and/or modify it under -- | |
12 -- terms of the GNU General Public License as published by the Free Soft- -- | |
13 -- ware Foundation; either version 3, or (at your option) any later ver- -- | |
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- | |
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- | |
16 -- or FITNESS FOR A PARTICULAR PURPOSE. -- | |
17 -- -- | |
18 -- As a special exception under Section 7 of GPL version 3, you are granted -- | |
19 -- additional permissions described in the GCC Runtime Library Exception, -- | |
20 -- version 3.1, as published by the Free Software Foundation. -- | |
21 -- -- | |
22 -- You should have received a copy of the GNU General Public License and -- | |
23 -- a copy of the GCC Runtime Library Exception along with this program; -- | |
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- | |
25 -- <http://www.gnu.org/licenses/>. -- | |
26 -- -- | |
27 -- GNARL was developed by the GNARL team at Florida State University. It is -- | |
28 -- now maintained by Ada Core Technologies Inc. in cooperation with Florida -- | |
29 -- State University (http://www.gnat.com). -- | |
30 -- -- | |
31 ------------------------------------------------------------------------------ | |
32 | |
33 -- This is the DragonFly THREADS version of this package | |
34 | |
35 with Interfaces.C; use Interfaces.C; | |
36 | |
37 package body System.OS_Interface is | |
38 | |
39 ----------- | |
40 -- Errno -- | |
41 ----------- | |
42 | |
43 function Errno return int is | |
44 type int_ptr is access all int; | |
45 | |
46 function internal_errno return int_ptr; | |
47 pragma Import (C, internal_errno, "__get_errno"); | |
48 | |
49 begin | |
50 return (internal_errno.all); | |
51 end Errno; | |
52 | |
53 -------------------- | |
54 -- Get_Stack_Base -- | |
55 -------------------- | |
56 | |
57 function Get_Stack_Base (thread : pthread_t) return Address is | |
58 pragma Unreferenced (thread); | |
59 begin | |
60 return Null_Address; | |
61 end Get_Stack_Base; | |
62 | |
63 ------------------ | |
64 -- pthread_init -- | |
65 ------------------ | |
66 | |
67 procedure pthread_init is | |
68 begin | |
69 null; | |
70 end pthread_init; | |
71 | |
72 ----------------- | |
73 -- To_Duration -- | |
74 ----------------- | |
75 | |
76 function To_Duration (TS : timespec) return Duration is | |
77 begin | |
78 return Duration (TS.ts_sec) + Duration (TS.ts_nsec) / 10#1#E9; | |
79 end To_Duration; | |
80 | |
81 ------------------------ | |
82 -- To_Target_Priority -- | |
83 ------------------------ | |
84 | |
85 function To_Target_Priority | |
86 (Prio : System.Any_Priority) return Interfaces.C.int | |
87 is | |
88 begin | |
89 return Interfaces.C.int (Prio); | |
90 end To_Target_Priority; | |
91 | |
92 ----------------- | |
93 -- To_Timespec -- | |
94 ----------------- | |
95 | |
96 function To_Timespec (D : Duration) return timespec is | |
97 S : time_t; | |
98 F : Duration; | |
99 | |
100 begin | |
101 S := time_t (Long_Long_Integer (D)); | |
102 F := D - Duration (S); | |
103 | |
104 -- If F has negative value due to a round-up, adjust for positive F | |
105 -- value. | |
106 | |
107 if F < 0.0 then | |
108 S := S - 1; | |
109 F := F + 1.0; | |
110 end if; | |
111 | |
112 return timespec'(ts_sec => S, | |
113 ts_nsec => long (Long_Long_Integer (F * 10#1#E9))); | |
114 end To_Timespec; | |
115 | |
116 end System.OS_Interface; |