projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| d0567dc0 PMR |
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 -- | |
| 4b490c1e | 10 | -- Copyright (C) 1995-2020, AdaCore -- |
| d0567dc0 PMR |
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 QNX 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 | ||
| 3f89eb7f JS |
45 | ----------------- |
| 46 | -- sigaltstack -- | |
| 47 | ----------------- | |
| 48 | ||
| 49 | function sigaltstack | |
| 50 | (ss : not null access stack_t; | |
| 51 | oss : access stack_t) return int | |
| 52 | is | |
| 53 | pragma Unreferenced (ss, oss); | |
| 54 | begin | |
| 55 | return 0; | |
| 56 | end sigaltstack; | |
| 57 | ||
| d0567dc0 PMR |
58 | -------------------- |
| 59 | -- Get_Stack_Base -- | |
| 60 | -------------------- | |
| 61 | ||
| 62 | function Get_Stack_Base (thread : pthread_t) return Address is | |
| 3f89eb7f | 63 | pragma Unreferenced (thread); |
| d0567dc0 PMR |
64 | begin |
| 65 | return Null_Address; | |
| 66 | end Get_Stack_Base; | |
| 67 | ||
| 68 | ------------------ | |
| 69 | -- pthread_init -- | |
| 70 | ------------------ | |
| 71 | ||
| 72 | procedure pthread_init is | |
| 73 | begin | |
| 74 | null; | |
| 75 | end pthread_init; | |
| 76 | ||
| 77 | ----------------- | |
| 78 | -- To_Duration -- | |
| 79 | ----------------- | |
| 80 | ||
| 81 | function To_Duration (TS : timespec) return Duration is | |
| 82 | begin | |
| 83 | return Duration (TS.tv_sec) + Duration (TS.tv_nsec) / 10#1#E9; | |
| 84 | end To_Duration; | |
| 85 | ||
| 86 | ------------------------ | |
| 87 | -- To_Target_Priority -- | |
| 88 | ------------------------ | |
| 89 | ||
| 90 | function To_Target_Priority | |
| 91 | (Prio : System.Any_Priority) return Interfaces.C.int | |
| 92 | is | |
| 93 | begin | |
| 94 | return Interfaces.C.int (Prio + 1); | |
| 95 | end To_Target_Priority; | |
| 96 | ||
| 97 | ----------------- | |
| 98 | -- To_Timespec -- | |
| 99 | ----------------- | |
| 100 | ||
| 101 | function To_Timespec (D : Duration) return timespec is | |
| 102 | S : time_t; | |
| 103 | F : Duration; | |
| 104 | ||
| 105 | begin | |
| 106 | S := time_t (Long_Long_Integer (D)); | |
| 107 | F := D - Duration (S); | |
| 108 | ||
| 109 | -- If F has negative value due to a round-up, adjust for positive F | |
| 110 | -- value. | |
| 111 | ||
| 112 | if F < 0.0 then | |
| 113 | S := S - 1; | |
| 114 | F := F + 1.0; | |
| 115 | end if; | |
| 116 | ||
| 117 | return timespec'(tv_sec => S, | |
| 118 | tv_nsec => long (Long_Long_Integer (F * 10#1#E9))); | |
| 119 | end To_Timespec; | |
| 120 | ||
| 121 | end System.OS_Interface; |