Mercurial > hg > CbC > CbC_gcc
comparison gcc/ada/libgnarl/s-osinte__posix.adb @ 111:04ced10e8804
gcc 7
| author | kono |
|---|---|
| date | Fri, 27 Oct 2017 22:46:09 +0900 |
| parents | |
| children | 84e7813d76e9 |
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| 68:561a7518be6b | 111:04ced10e8804 |
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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) 1991-2017, Florida State University -- | |
| 10 -- Copyright (C) 1995-2017, AdaCore -- | |
| 11 -- -- | |
| 12 -- GNAT 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 3, or (at your option) any later ver- -- | |
| 15 -- sion. GNAT 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. -- | |
| 18 -- -- | |
| 19 -- As a special exception under Section 7 of GPL version 3, you are granted -- | |
| 20 -- additional permissions described in the GCC Runtime Library Exception, -- | |
| 21 -- version 3.1, as published by the Free Software Foundation. -- | |
| 22 -- -- | |
| 23 -- You should have received a copy of the GNU General Public License and -- | |
| 24 -- a copy of the GCC Runtime Library Exception along with this program; -- | |
| 25 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- | |
| 26 -- <http://www.gnu.org/licenses/>. -- | |
| 27 -- -- | |
| 28 -- GNARL was developed by the GNARL team at Florida State University. -- | |
| 29 -- Extensive contributions were provided by Ada Core Technologies, Inc. -- | |
| 30 -- -- | |
| 31 ------------------------------------------------------------------------------ | |
| 32 | |
| 33 -- This version is for POSIX-like operating systems | |
| 34 | |
| 35 pragma Polling (Off); | |
| 36 -- Turn off polling, we do not want ATC polling to take place during | |
| 37 -- tasking operations. It causes infinite loops and other problems. | |
| 38 | |
| 39 -- This package encapsulates all direct interfaces to OS services | |
| 40 -- that are needed by children of System. | |
| 41 | |
| 42 with Interfaces.C; use Interfaces.C; | |
| 43 package body System.OS_Interface is | |
| 44 | |
| 45 -------------------- | |
| 46 -- Get_Stack_Base -- | |
| 47 -------------------- | |
| 48 | |
| 49 function Get_Stack_Base (thread : pthread_t) return Address is | |
| 50 pragma Warnings (Off, thread); | |
| 51 | |
| 52 begin | |
| 53 return Null_Address; | |
| 54 end Get_Stack_Base; | |
| 55 | |
| 56 ------------------ | |
| 57 -- pthread_init -- | |
| 58 ------------------ | |
| 59 | |
| 60 procedure pthread_init is | |
| 61 begin | |
| 62 null; | |
| 63 end pthread_init; | |
| 64 | |
| 65 ----------------- | |
| 66 -- To_Duration -- | |
| 67 ----------------- | |
| 68 | |
| 69 function To_Duration (TS : timespec) return Duration is | |
| 70 begin | |
| 71 return Duration (TS.tv_sec) + Duration (TS.tv_nsec) / 10#1#E9; | |
| 72 end To_Duration; | |
| 73 | |
| 74 ------------------------ | |
| 75 -- To_Target_Priority -- | |
| 76 ------------------------ | |
| 77 | |
| 78 function To_Target_Priority | |
| 79 (Prio : System.Any_Priority) return Interfaces.C.int | |
| 80 is | |
| 81 begin | |
| 82 return Interfaces.C.int (Prio); | |
| 83 end To_Target_Priority; | |
| 84 | |
| 85 ----------------- | |
| 86 -- To_Timespec -- | |
| 87 ----------------- | |
| 88 | |
| 89 function To_Timespec (D : Duration) return timespec is | |
| 90 S : time_t; | |
| 91 F : Duration; | |
| 92 | |
| 93 begin | |
| 94 S := time_t (Long_Long_Integer (D)); | |
| 95 F := D - Duration (S); | |
| 96 | |
| 97 -- If F has negative value due to a round-up, adjust for positive F | |
| 98 -- value. | |
| 99 | |
| 100 if F < 0.0 then | |
| 101 S := S - 1; | |
| 102 F := F + 1.0; | |
| 103 end if; | |
| 104 | |
| 105 return timespec'(tv_sec => S, | |
| 106 tv_nsec => long (Long_Long_Integer (F * 10#1#E9))); | |
| 107 end To_Timespec; | |
| 108 | |
| 109 end System.OS_Interface; |