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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
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4 -- --
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5 -- S Y S T E M . O S _ I N T E R F A C E --
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6 -- --
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7 -- S p e c --
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8 -- --
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9 -- Copyright (C) 1991-2017, Florida State University --
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145
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10 -- Copyright (C) 1995-2019, Free Software Foundation, Inc. --
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111
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11 -- --
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12 -- GNAT is free software; you can redistribute it and/or modify it under --
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13 -- terms of the GNU General Public License as published by the Free Soft- --
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14 -- ware Foundation; either version 3, or (at your option) any later ver- --
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15 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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16 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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17 -- or FITNESS FOR A PARTICULAR PURPOSE. --
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18 -- --
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19 -- As a special exception under Section 7 of GPL version 3, you are granted --
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20 -- additional permissions described in the GCC Runtime Library Exception, --
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21 -- version 3.1, as published by the Free Software Foundation. --
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22 -- --
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23 -- You should have received a copy of the GNU General Public License and --
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24 -- a copy of the GCC Runtime Library Exception along with this program; --
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25 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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26 -- <http://www.gnu.org/licenses/>. --
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27 -- --
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28 -- GNARL was developed by the GNARL team at Florida State University. --
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29 -- Extensive contributions were provided by Ada Core Technologies, Inc. --
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30 -- --
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31 ------------------------------------------------------------------------------
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32
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33 -- This is a GNU/Linux version of this package
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34
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35 -- This package encapsulates all direct interfaces to OS services
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36 -- that are needed by the tasking run-time (libgnarl).
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37
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38 -- PLEASE DO NOT add any with-clauses to this package or remove the pragma
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39 -- Preelaborate. This package is designed to be a bottom-level (leaf) package.
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40
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41 with Ada.Unchecked_Conversion;
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42 with Interfaces.C;
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43 with System.Linux;
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44 with System.OS_Constants;
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45
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46 package System.OS_Interface is
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47 pragma Preelaborate;
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48
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49 pragma Linker_Options ("-lrt");
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50 -- Needed for clock_getres with glibc versions prior to 2.17
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51
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52 pragma Linker_Options ("-lpthread");
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53
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54 subtype int is Interfaces.C.int;
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55 subtype char is Interfaces.C.char;
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56 subtype short is Interfaces.C.short;
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57 subtype long is Interfaces.C.long;
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58 subtype unsigned is Interfaces.C.unsigned;
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59 subtype unsigned_short is Interfaces.C.unsigned_short;
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60 subtype unsigned_long is Interfaces.C.unsigned_long;
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61 subtype unsigned_char is Interfaces.C.unsigned_char;
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62 subtype plain_char is Interfaces.C.plain_char;
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63 subtype size_t is Interfaces.C.size_t;
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64
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65 -----------
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66 -- Errno --
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67 -----------
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68
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69 function errno return int;
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70 pragma Import (C, errno, "__get_errno");
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71
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72 EAGAIN : constant := System.Linux.EAGAIN;
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73 EINTR : constant := System.Linux.EINTR;
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74 EINVAL : constant := System.Linux.EINVAL;
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75 ENOMEM : constant := System.Linux.ENOMEM;
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76 EPERM : constant := System.Linux.EPERM;
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77 ETIMEDOUT : constant := System.Linux.ETIMEDOUT;
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78
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79 -------------
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80 -- Signals --
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81 -------------
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82
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83 Max_Interrupt : constant := 63;
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84 type Signal is new int range 0 .. Max_Interrupt;
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85 for Signal'Size use int'Size;
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86
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87 SIGHUP : constant := System.Linux.SIGHUP;
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88 SIGINT : constant := System.Linux.SIGINT;
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89 SIGQUIT : constant := System.Linux.SIGQUIT;
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90 SIGILL : constant := System.Linux.SIGILL;
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91 SIGTRAP : constant := System.Linux.SIGTRAP;
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92 SIGIOT : constant := System.Linux.SIGIOT;
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93 SIGABRT : constant := System.Linux.SIGABRT;
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94 SIGBUS : constant := System.Linux.SIGBUS;
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95 SIGFPE : constant := System.Linux.SIGFPE;
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96 SIGKILL : constant := System.Linux.SIGKILL;
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97 SIGUSR1 : constant := System.Linux.SIGUSR1;
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98 SIGSEGV : constant := System.Linux.SIGSEGV;
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99 SIGUSR2 : constant := System.Linux.SIGUSR2;
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100 SIGPIPE : constant := System.Linux.SIGPIPE;
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101 SIGALRM : constant := System.Linux.SIGALRM;
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102 SIGTERM : constant := System.Linux.SIGTERM;
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103 SIGSTKFLT : constant := System.Linux.SIGSTKFLT;
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104 SIGCLD : constant := System.Linux.SIGCLD;
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105 SIGCHLD : constant := System.Linux.SIGCHLD;
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106 SIGCONT : constant := System.Linux.SIGCONT;
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107 SIGSTOP : constant := System.Linux.SIGSTOP;
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108 SIGTSTP : constant := System.Linux.SIGTSTP;
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109 SIGTTIN : constant := System.Linux.SIGTTIN;
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110 SIGTTOU : constant := System.Linux.SIGTTOU;
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111 SIGURG : constant := System.Linux.SIGURG;
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112 SIGXCPU : constant := System.Linux.SIGXCPU;
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113 SIGXFSZ : constant := System.Linux.SIGXFSZ;
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114 SIGVTALRM : constant := System.Linux.SIGVTALRM;
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115 SIGPROF : constant := System.Linux.SIGPROF;
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116 SIGWINCH : constant := System.Linux.SIGWINCH;
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117 SIGPOLL : constant := System.Linux.SIGPOLL;
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118 SIGIO : constant := System.Linux.SIGIO;
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119 SIGLOST : constant := System.Linux.SIGLOST;
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120 SIGPWR : constant := System.Linux.SIGPWR;
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121 SIGSYS : constant := System.Linux.SIGSYS;
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122 SIGUNUSED : constant := System.Linux.SIGUNUSED;
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123 SIG32 : constant := System.Linux.SIG32;
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124 SIG33 : constant := System.Linux.SIG33;
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125 SIG34 : constant := System.Linux.SIG34;
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126
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127 SIGADAABORT : constant := SIGABRT;
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128 -- Change this to use another signal for task abort. SIGTERM might be a
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129 -- good one.
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130
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131 type Signal_Set is array (Natural range <>) of Signal;
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132
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133 Unmasked : constant Signal_Set := (
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134 SIGTRAP,
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135 -- To enable debugging on multithreaded applications, mark SIGTRAP to
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136 -- be kept unmasked.
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137
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138 SIGBUS,
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139
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140 SIGTTIN, SIGTTOU, SIGTSTP,
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141 -- Keep these three signals unmasked so that background processes and IO
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142 -- behaves as normal "C" applications
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143
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144 SIGPROF,
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145 -- To avoid confusing the profiler
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146
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147 SIGKILL, SIGSTOP
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148 -- These two signals actually can't be masked (POSIX won't allow it)
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145
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149 );
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150
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151 Reserved : constant Signal_Set := (
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152 SIG32, SIG33, SIG34
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153 -- glibc POSIX threads implementation uses two (NPTL) or three
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154 -- (LinuxThreads) real-time signals for its own use (see SIGNAL(7)).
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155 -- These signals are considered reserved and not unmasked as glibc does
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156 -- not permit these signals to be used by the public signal.h API.
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157 -- While LinuxThreads is mostly likely unused now, SIG34 is still
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158 -- reserved as this behavior is consistent with past GNAT releases.
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159 );
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160
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161 type sigset_t is private;
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162
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163 function sigaddset (set : access sigset_t; sig : Signal) return int;
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164 pragma Import (C, sigaddset, "sigaddset");
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165
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166 function sigdelset (set : access sigset_t; sig : Signal) return int;
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167 pragma Import (C, sigdelset, "sigdelset");
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168
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169 function sigfillset (set : access sigset_t) return int;
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170 pragma Import (C, sigfillset, "sigfillset");
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171
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172 function sigismember (set : access sigset_t; sig : Signal) return int;
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173 pragma Import (C, sigismember, "sigismember");
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174
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175 function sigemptyset (set : access sigset_t) return int;
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176 pragma Import (C, sigemptyset, "sigemptyset");
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177
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178 type union_type_3 is new String (1 .. 116);
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179 type siginfo_t is record
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180 si_signo : int;
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181 si_code : int;
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182 si_errno : int;
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183 X_data : union_type_3;
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184 end record;
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185 pragma Convention (C, siginfo_t);
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186
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187 type struct_sigaction is record
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188 sa_handler : System.Address;
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189 sa_mask : sigset_t;
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190 sa_flags : int;
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191 sa_restorer : System.Address;
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192 end record;
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193 pragma Convention (C, struct_sigaction);
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194
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195 type struct_sigaction_ptr is access all struct_sigaction;
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196
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197 type Machine_State is record
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198 eip : unsigned_long;
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199 ebx : unsigned_long;
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200 esp : unsigned_long;
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201 ebp : unsigned_long;
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202 esi : unsigned_long;
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203 edi : unsigned_long;
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204 end record;
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205 type Machine_State_Ptr is access all Machine_State;
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206
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207 SA_SIGINFO : constant := System.Linux.SA_SIGINFO;
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208 SA_ONSTACK : constant := System.Linux.SA_ONSTACK;
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209
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210 SIG_BLOCK : constant := 0;
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211 SIG_UNBLOCK : constant := 1;
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212 SIG_SETMASK : constant := 2;
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213
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214 SIG_DFL : constant := 0;
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215 SIG_IGN : constant := 1;
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216
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217 function sigaction
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218 (sig : Signal;
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219 act : struct_sigaction_ptr;
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220 oact : struct_sigaction_ptr) return int;
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221 pragma Import (C, sigaction, "sigaction");
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222
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223 ----------
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224 -- Time --
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225 ----------
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226
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227 subtype time_t is System.Linux.time_t;
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228 subtype timespec is System.Linux.timespec;
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229 subtype timeval is System.Linux.timeval;
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230 subtype clockid_t is System.Linux.clockid_t;
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231
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232 function clock_gettime
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233 (clock_id : clockid_t; tp : access timespec) return int;
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234 pragma Import (C, clock_gettime, "clock_gettime");
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235
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236 function clock_getres
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237 (clock_id : clockid_t;
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238 res : access timespec) return int;
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239 pragma Import (C, clock_getres, "clock_getres");
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240
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241 function To_Duration (TS : timespec) return Duration;
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242 pragma Inline (To_Duration);
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243
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244 function To_Timespec (D : Duration) return timespec;
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245 pragma Inline (To_Timespec);
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246
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247 function sysconf (name : int) return long;
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248 pragma Import (C, sysconf);
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249
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250 SC_CLK_TCK : constant := 2;
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251 SC_NPROCESSORS_ONLN : constant := 84;
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252
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253 -------------------------
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254 -- Priority Scheduling --
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255 -------------------------
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256
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257 SCHED_OTHER : constant := 0;
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258 SCHED_FIFO : constant := 1;
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259 SCHED_RR : constant := 2;
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260
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261 function To_Target_Priority
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262 (Prio : System.Any_Priority) return Interfaces.C.int;
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263 -- Maps System.Any_Priority to a POSIX priority
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264
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265 -------------
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266 -- Process --
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267 -------------
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268
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269 type pid_t is private;
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270
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271 function kill (pid : pid_t; sig : Signal) return int;
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272 pragma Import (C, kill, "kill");
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273
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274 function getpid return pid_t;
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275 pragma Import (C, getpid, "getpid");
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276
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277 PR_SET_NAME : constant := 15;
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278 PR_GET_NAME : constant := 16;
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279
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280 function prctl
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281 (option : int;
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282 arg2, arg3, arg4, arg5 : unsigned_long := 0) return int;
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283 pragma Import (C, prctl);
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284
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285 -------------
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286 -- Threads --
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287 -------------
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288
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289 type Thread_Body is access
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290 function (arg : System.Address) return System.Address;
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291 pragma Convention (C, Thread_Body);
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292
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293 function Thread_Body_Access is new
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294 Ada.Unchecked_Conversion (System.Address, Thread_Body);
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295
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296 type pthread_t is new unsigned_long;
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297 subtype Thread_Id is pthread_t;
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298
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299 function To_pthread_t is
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300 new Ada.Unchecked_Conversion (unsigned_long, pthread_t);
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301
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302 type pthread_mutex_t is limited private;
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303 type pthread_rwlock_t is limited private;
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304 type pthread_cond_t is limited private;
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305 type pthread_attr_t is limited private;
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306 type pthread_mutexattr_t is limited private;
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307 type pthread_rwlockattr_t is limited private;
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308 type pthread_condattr_t is limited private;
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309 type pthread_key_t is private;
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310
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311 PTHREAD_CREATE_DETACHED : constant := 1;
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312
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313 -----------
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314 -- Stack --
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315 -----------
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316
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317 type stack_t is record
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318 ss_sp : System.Address;
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319 ss_flags : int;
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320 ss_size : size_t;
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321 end record;
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322 pragma Convention (C, stack_t);
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323
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324 function sigaltstack
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325 (ss : not null access stack_t;
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326 oss : access stack_t) return int;
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327 pragma Import (C, sigaltstack, "sigaltstack");
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328
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329 Alternate_Stack : aliased System.Address;
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330 pragma Import (C, Alternate_Stack, "__gnat_alternate_stack");
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331 -- The alternate signal stack for stack overflows
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332
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333 Alternate_Stack_Size : constant := 16 * 1024;
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334 -- This must be in keeping with init.c:__gnat_alternate_stack
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335
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336 function Get_Stack_Base (thread : pthread_t) return Address;
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337 pragma Inline (Get_Stack_Base);
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338 -- This is a dummy procedure to share some GNULLI files
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339
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340 ---------------------------------------
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341 -- Nonstandard Thread Initialization --
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342 ---------------------------------------
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343
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344 procedure pthread_init;
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345 pragma Inline (pthread_init);
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346 -- This is a dummy procedure to share some GNULLI files
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347
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348 -------------------------
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349 -- POSIX.1c Section 3 --
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350 -------------------------
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351
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352 function sigwait (set : access sigset_t; sig : access Signal) return int;
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353 pragma Import (C, sigwait, "sigwait");
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354
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355 function pthread_kill (thread : pthread_t; sig : Signal) return int;
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356 pragma Import (C, pthread_kill, "pthread_kill");
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357
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358 function pthread_sigmask
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359 (how : int;
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360 set : access sigset_t;
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361 oset : access sigset_t) return int;
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362 pragma Import (C, pthread_sigmask, "pthread_sigmask");
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363
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364 --------------------------
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365 -- POSIX.1c Section 11 --
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366 --------------------------
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367
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368 function pthread_mutexattr_init
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369 (attr : access pthread_mutexattr_t) return int;
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370 pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
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371
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372 function pthread_mutexattr_destroy
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373 (attr : access pthread_mutexattr_t) return int;
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374 pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
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375
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376 function pthread_mutex_init
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377 (mutex : access pthread_mutex_t;
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378 attr : access pthread_mutexattr_t) return int;
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379 pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
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380
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381 function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
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382 pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
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383
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384 function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
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385 pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
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386
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387 function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
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388 pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
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389
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390 function pthread_rwlockattr_init
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391 (attr : access pthread_rwlockattr_t) return int;
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392 pragma Import (C, pthread_rwlockattr_init, "pthread_rwlockattr_init");
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393
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394 function pthread_rwlockattr_destroy
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395 (attr : access pthread_rwlockattr_t) return int;
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396 pragma Import (C, pthread_rwlockattr_destroy, "pthread_rwlockattr_destroy");
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397
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398 PTHREAD_RWLOCK_PREFER_READER_NP : constant := 0;
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399 PTHREAD_RWLOCK_PREFER_WRITER_NP : constant := 1;
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400 PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP : constant := 2;
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401
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402 function pthread_rwlockattr_setkind_np
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403 (attr : access pthread_rwlockattr_t;
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404 pref : int) return int;
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405 pragma Import
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406 (C, pthread_rwlockattr_setkind_np, "pthread_rwlockattr_setkind_np");
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407
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408 function pthread_rwlock_init
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409 (mutex : access pthread_rwlock_t;
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410 attr : access pthread_rwlockattr_t) return int;
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411 pragma Import (C, pthread_rwlock_init, "pthread_rwlock_init");
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412
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413 function pthread_rwlock_destroy
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414 (mutex : access pthread_rwlock_t) return int;
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415 pragma Import (C, pthread_rwlock_destroy, "pthread_rwlock_destroy");
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416
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417 function pthread_rwlock_rdlock (mutex : access pthread_rwlock_t) return int;
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418 pragma Import (C, pthread_rwlock_rdlock, "pthread_rwlock_rdlock");
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419
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420 function pthread_rwlock_wrlock (mutex : access pthread_rwlock_t) return int;
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421 pragma Import (C, pthread_rwlock_wrlock, "pthread_rwlock_wrlock");
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422
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423 function pthread_rwlock_unlock (mutex : access pthread_rwlock_t) return int;
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424 pragma Import (C, pthread_rwlock_unlock, "pthread_rwlock_unlock");
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425
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426 function pthread_condattr_init
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427 (attr : access pthread_condattr_t) return int;
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428 pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
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429
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430 function pthread_condattr_destroy
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431 (attr : access pthread_condattr_t) return int;
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432 pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
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433
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434 function pthread_cond_init
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435 (cond : access pthread_cond_t;
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436 attr : access pthread_condattr_t) return int;
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437 pragma Import (C, pthread_cond_init, "pthread_cond_init");
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438
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439 function pthread_cond_destroy (cond : access pthread_cond_t) return int;
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440 pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
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441
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442 function pthread_cond_signal (cond : access pthread_cond_t) return int;
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443 pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
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444
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445 function pthread_cond_wait
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446 (cond : access pthread_cond_t;
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447 mutex : access pthread_mutex_t) return int;
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448 pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
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449
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450 function pthread_cond_timedwait
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451 (cond : access pthread_cond_t;
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452 mutex : access pthread_mutex_t;
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453 abstime : access timespec) return int;
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454 pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
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455
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456 --------------------------
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457 -- POSIX.1c Section 13 --
|
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458 --------------------------
|
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459
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460 PTHREAD_PRIO_NONE : constant := 0;
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461 PTHREAD_PRIO_INHERIT : constant := 1;
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462 PTHREAD_PRIO_PROTECT : constant := 2;
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463
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464 function pthread_mutexattr_setprotocol
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465 (attr : access pthread_mutexattr_t;
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466 protocol : int) return int;
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467 pragma Import (C, pthread_mutexattr_setprotocol);
|
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468
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469 function pthread_mutexattr_setprioceiling
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470 (attr : access pthread_mutexattr_t;
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471 prioceiling : int) return int;
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472 pragma Import (C, pthread_mutexattr_setprioceiling);
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473
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|
474 type struct_sched_param is record
|
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|
475 sched_priority : int; -- scheduling priority
|
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476 end record;
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|
477 pragma Convention (C, struct_sched_param);
|
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478
|
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479 function pthread_setschedparam
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480 (thread : pthread_t;
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481 policy : int;
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482 param : access struct_sched_param) return int;
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|
483 pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
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484
|
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485 function pthread_attr_setschedpolicy
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486 (attr : access pthread_attr_t;
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487 policy : int) return int;
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|
488 pragma Import
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489 (C, pthread_attr_setschedpolicy, "pthread_attr_setschedpolicy");
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490
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491 function sched_yield return int;
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492 pragma Import (C, sched_yield, "sched_yield");
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493
|
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|
494 ---------------------------
|
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|
495 -- P1003.1c - Section 16 --
|
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496 ---------------------------
|
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|
497
|
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|
498 function pthread_attr_init
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499 (attributes : access pthread_attr_t) return int;
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|
500 pragma Import (C, pthread_attr_init, "pthread_attr_init");
|
|
|
501
|
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|
502 function pthread_attr_destroy
|
|
|
503 (attributes : access pthread_attr_t) return int;
|
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|
504 pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
|
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505
|
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|
506 function pthread_attr_setdetachstate
|
|
|
507 (attr : access pthread_attr_t;
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|
508 detachstate : int) return int;
|
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|
509 pragma Import
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510 (C, pthread_attr_setdetachstate, "pthread_attr_setdetachstate");
|
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511
|
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|
512 function pthread_attr_setstacksize
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513 (attr : access pthread_attr_t;
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|
514 stacksize : size_t) return int;
|
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515 pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
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|
516
|
|
|
517 function pthread_create
|
|
|
518 (thread : access pthread_t;
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|
519 attributes : access pthread_attr_t;
|
|
|
520 start_routine : Thread_Body;
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|
521 arg : System.Address) return int;
|
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|
522 pragma Import (C, pthread_create, "pthread_create");
|
|
|
523
|
|
|
524 procedure pthread_exit (status : System.Address);
|
|
|
525 pragma Import (C, pthread_exit, "pthread_exit");
|
|
|
526
|
|
|
527 function pthread_self return pthread_t;
|
|
|
528 pragma Import (C, pthread_self, "pthread_self");
|
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529
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|
|
530 function lwp_self return System.Address;
|
|
|
531 pragma Import (C, lwp_self, "__gnat_lwp_self");
|
|
|
532
|
|
|
533 --------------------------
|
|
|
534 -- POSIX.1c Section 17 --
|
|
|
535 --------------------------
|
|
|
536
|
|
|
537 function pthread_setspecific
|
|
|
538 (key : pthread_key_t;
|
|
|
539 value : System.Address) return int;
|
|
|
540 pragma Import (C, pthread_setspecific, "pthread_setspecific");
|
|
|
541
|
|
|
542 function pthread_getspecific (key : pthread_key_t) return System.Address;
|
|
|
543 pragma Import (C, pthread_getspecific, "pthread_getspecific");
|
|
|
544
|
|
|
545 type destructor_pointer is access procedure (arg : System.Address);
|
|
|
546 pragma Convention (C, destructor_pointer);
|
|
|
547
|
|
|
548 function pthread_key_create
|
|
|
549 (key : access pthread_key_t;
|
|
|
550 destructor : destructor_pointer) return int;
|
|
|
551 pragma Import (C, pthread_key_create, "pthread_key_create");
|
|
|
552
|
|
|
553 ----------------
|
|
|
554 -- Extensions --
|
|
|
555 ----------------
|
|
|
556
|
|
|
557 CPU_SETSIZE : constant := 1_024;
|
|
|
558 -- Size of the cpu_set_t mask on most linux systems (SUSE 11 uses 4_096).
|
|
|
559 -- This is kept for backward compatibility (System.Task_Info uses it), but
|
|
|
560 -- the run-time library does no longer rely on static masks, using
|
|
|
561 -- dynamically allocated masks instead.
|
|
|
562
|
|
|
563 type bit_field is array (1 .. CPU_SETSIZE) of Boolean;
|
|
|
564 for bit_field'Size use CPU_SETSIZE;
|
|
|
565 pragma Pack (bit_field);
|
|
|
566 pragma Convention (C, bit_field);
|
|
|
567
|
|
|
568 type cpu_set_t is record
|
|
|
569 bits : bit_field;
|
|
|
570 end record;
|
|
|
571 pragma Convention (C, cpu_set_t);
|
|
|
572
|
|
|
573 type cpu_set_t_ptr is access all cpu_set_t;
|
|
|
574 -- In the run-time library we use this pointer because the size of type
|
|
|
575 -- cpu_set_t varies depending on the glibc version. Hence, objects of type
|
|
|
576 -- cpu_set_t are allocated dynamically using the number of processors
|
|
|
577 -- available in the target machine (value obtained at execution time).
|
|
|
578
|
|
|
579 function CPU_ALLOC (count : size_t) return cpu_set_t_ptr;
|
|
|
580 pragma Import (C, CPU_ALLOC, "__gnat_cpu_alloc");
|
|
|
581 -- Wrapper around the CPU_ALLOC C macro
|
|
|
582
|
|
|
583 function CPU_ALLOC_SIZE (count : size_t) return size_t;
|
|
|
584 pragma Import (C, CPU_ALLOC_SIZE, "__gnat_cpu_alloc_size");
|
|
|
585 -- Wrapper around the CPU_ALLOC_SIZE C macro
|
|
|
586
|
|
|
587 procedure CPU_FREE (cpuset : cpu_set_t_ptr);
|
|
|
588 pragma Import (C, CPU_FREE, "__gnat_cpu_free");
|
|
|
589 -- Wrapper around the CPU_FREE C macro
|
|
|
590
|
|
|
591 procedure CPU_ZERO (count : size_t; cpuset : cpu_set_t_ptr);
|
|
|
592 pragma Import (C, CPU_ZERO, "__gnat_cpu_zero");
|
|
|
593 -- Wrapper around the CPU_ZERO_S C macro
|
|
|
594
|
|
|
595 procedure CPU_SET (cpu : int; count : size_t; cpuset : cpu_set_t_ptr);
|
|
|
596 pragma Import (C, CPU_SET, "__gnat_cpu_set");
|
|
|
597 -- Wrapper around the CPU_SET_S C macro
|
|
|
598
|
|
|
599 function pthread_setaffinity_np
|
|
|
600 (thread : pthread_t;
|
|
|
601 cpusetsize : size_t;
|
|
|
602 cpuset : cpu_set_t_ptr) return int;
|
|
|
603 pragma Import (C, pthread_setaffinity_np, "pthread_setaffinity_np");
|
|
|
604 pragma Weak_External (pthread_setaffinity_np);
|
|
|
605 -- Use a weak symbol because this function may be available or not,
|
|
|
606 -- depending on the version of the system.
|
|
|
607
|
|
|
608 function pthread_attr_setaffinity_np
|
|
|
609 (attr : access pthread_attr_t;
|
|
|
610 cpusetsize : size_t;
|
|
|
611 cpuset : cpu_set_t_ptr) return int;
|
|
|
612 pragma Import (C, pthread_attr_setaffinity_np,
|
|
|
613 "pthread_attr_setaffinity_np");
|
|
|
614 pragma Weak_External (pthread_attr_setaffinity_np);
|
|
|
615 -- Use a weak symbol because this function may be available or not,
|
|
|
616 -- depending on the version of the system.
|
|
|
617
|
|
|
618 private
|
|
|
619
|
|
|
620 type sigset_t is
|
|
|
621 array (0 .. OS_Constants.SIZEOF_sigset - 1) of unsigned_char;
|
|
|
622 pragma Convention (C, sigset_t);
|
|
|
623 for sigset_t'Alignment use Interfaces.C.unsigned_long'Alignment;
|
|
|
624
|
|
|
625 pragma Warnings (Off);
|
|
|
626 for struct_sigaction use record
|
|
|
627 sa_handler at Linux.sa_handler_pos range 0 .. Standard'Address_Size - 1;
|
|
|
628 sa_mask at Linux.sa_mask_pos range 0 .. 1023;
|
|
|
629 sa_flags at Linux.sa_flags_pos range 0 .. int'Size - 1;
|
|
|
630 end record;
|
|
|
631 -- We intentionally leave sa_restorer unspecified and let the compiler
|
|
|
632 -- append it after the last field, so disable corresponding warning.
|
|
|
633 pragma Warnings (On);
|
|
|
634
|
|
|
635 type pid_t is new int;
|
|
|
636
|
|
|
637 subtype char_array is Interfaces.C.char_array;
|
|
|
638
|
|
|
639 type pthread_attr_t is record
|
|
|
640 Data : char_array (1 .. OS_Constants.PTHREAD_ATTR_SIZE);
|
|
|
641 end record;
|
|
|
642 pragma Convention (C, pthread_attr_t);
|
|
|
643 for pthread_attr_t'Alignment use Interfaces.C.unsigned_long'Alignment;
|
|
|
644
|
|
|
645 type pthread_condattr_t is record
|
|
|
646 Data : char_array (1 .. OS_Constants.PTHREAD_CONDATTR_SIZE);
|
|
|
647 end record;
|
|
|
648 pragma Convention (C, pthread_condattr_t);
|
|
|
649 for pthread_condattr_t'Alignment use Interfaces.C.int'Alignment;
|
|
|
650
|
|
|
651 type pthread_mutexattr_t is record
|
|
|
652 Data : char_array (1 .. OS_Constants.PTHREAD_MUTEXATTR_SIZE);
|
|
|
653 end record;
|
|
|
654 pragma Convention (C, pthread_mutexattr_t);
|
|
|
655 for pthread_mutexattr_t'Alignment use Interfaces.C.int'Alignment;
|
|
|
656
|
|
|
657 type pthread_mutex_t is record
|
|
|
658 Data : char_array (1 .. OS_Constants.PTHREAD_MUTEX_SIZE);
|
|
|
659 end record;
|
|
|
660 pragma Convention (C, pthread_mutex_t);
|
|
|
661 for pthread_mutex_t'Alignment use Interfaces.C.unsigned_long'Alignment;
|
|
|
662
|
|
|
663 type pthread_rwlockattr_t is record
|
|
|
664 Data : char_array (1 .. OS_Constants.PTHREAD_RWLOCKATTR_SIZE);
|
|
|
665 end record;
|
|
|
666 pragma Convention (C, pthread_rwlockattr_t);
|
|
|
667 for pthread_rwlockattr_t'Alignment use Interfaces.C.unsigned_long'Alignment;
|
|
|
668
|
|
|
669 type pthread_rwlock_t is record
|
|
|
670 Data : char_array (1 .. OS_Constants.PTHREAD_RWLOCK_SIZE);
|
|
|
671 end record;
|
|
|
672 pragma Convention (C, pthread_rwlock_t);
|
|
|
673 for pthread_rwlock_t'Alignment use Interfaces.C.unsigned_long'Alignment;
|
|
|
674
|
|
|
675 type pthread_cond_t is record
|
|
|
676 Data : char_array (1 .. OS_Constants.PTHREAD_COND_SIZE);
|
|
|
677 end record;
|
|
|
678 pragma Convention (C, pthread_cond_t);
|
|
|
679 for pthread_cond_t'Alignment use Interfaces.Unsigned_64'Alignment;
|
|
|
680
|
|
|
681 type pthread_key_t is new unsigned;
|
|
|
682
|
|
|
683 end System.OS_Interface;
|
