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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNU ADA 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) 1991-1994, Florida State University --
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131
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10 -- Copyright (C) 1995-2018, 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 the GNU/Hurd (POSIX Threads) 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 children of System.
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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 Interfaces.C;
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42 with Unchecked_Conversion;
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43
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44 package System.OS_Interface is
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45 pragma Preelaborate;
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46
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47 pragma Linker_Options ("-lpthread");
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48 pragma Linker_Options ("-lrt");
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49
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50 subtype int is Interfaces.C.int;
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51 subtype char is Interfaces.C.char;
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52 subtype short is Interfaces.C.short;
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53 subtype long is Interfaces.C.long;
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54 subtype unsigned is Interfaces.C.unsigned;
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55 subtype unsigned_short is Interfaces.C.unsigned_short;
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56 subtype unsigned_long is Interfaces.C.unsigned_long;
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57 subtype unsigned_char is Interfaces.C.unsigned_char;
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58 subtype plain_char is Interfaces.C.plain_char;
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59 subtype size_t is Interfaces.C.size_t;
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60
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61 -----------
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62 -- Errno --
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63 -----------
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64 -- From /usr/include/i386-gnu/bits/errno.h
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65
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66 function errno return int;
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67 pragma Import (C, errno, "__get_errno");
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68
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69 EAGAIN : constant := 1073741859;
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70 EINTR : constant := 1073741828;
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71 EINVAL : constant := 1073741846;
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72 ENOMEM : constant := 1073741836;
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73 EPERM : constant := 1073741825;
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74 ETIMEDOUT : constant := 1073741884;
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75
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76 -------------
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77 -- Signals --
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78 -------------
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79 -- From /usr/include/i386-gnu/bits/signum.h
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80
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81 Max_Interrupt : constant := 32;
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82 type Signal is new int range 0 .. Max_Interrupt;
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83 for Signal'Size use int'Size;
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84
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85 SIGHUP : constant := 1; -- hangup
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86 SIGINT : constant := 2; -- interrupt (rubout)
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87 SIGQUIT : constant := 3; -- quit (ASCD FS)
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88 SIGILL : constant := 4; -- illegal instruction (not reset)
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89 SIGTRAP : constant := 5; -- trace trap (not reset)
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90 SIGIOT : constant := 6; -- IOT instruction
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91 SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the future
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92 SIGEMT : constant := 7; -- EMT instruction
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93 SIGFPE : constant := 8; -- floating point exception
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94 SIGKILL : constant := 9; -- kill (cannot be caught or ignored)
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95 SIGBUS : constant := 10; -- bus error
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96 SIGSEGV : constant := 11; -- segmentation violation
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97 SIGSYS : constant := 12; -- bad argument to system call
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98 SIGPIPE : constant := 13; -- write on a pipe with no one to read it
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99 SIGALRM : constant := 14; -- alarm clock
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100 SIGTERM : constant := 15; -- software termination signal from kill
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101 SIGURG : constant := 16; -- urgent condition on IO channel
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102 SIGSTOP : constant := 17; -- stop (cannot be caught or ignored)
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103 SIGTSTP : constant := 18; -- user stop requested from tty
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104 SIGCONT : constant := 19; -- stopped process has been continued
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105 SIGCLD : constant := 20; -- alias for SIGCHLD
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106 SIGCHLD : constant := 20; -- child status change
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107 SIGTTIN : constant := 21; -- background tty read attempted
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108 SIGTTOU : constant := 22; -- background tty write attempted
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109 SIGIO : constant := 23; -- I/O possible (Solaris SIGPOLL alias)
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110 SIGPOLL : constant := 23; -- I/O possible (same as SIGIO?)
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111 SIGXCPU : constant := 24; -- CPU time limit exceeded
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112 SIGXFSZ : constant := 25; -- filesize limit exceeded
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113 SIGVTALRM : constant := 26; -- virtual timer expired
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114 SIGPROF : constant := 27; -- profiling timer expired
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115 SIGWINCH : constant := 28; -- window size change
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116 SIGINFO : constant := 29; -- information request (NetBSD/FreeBSD)
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117 SIGUSR1 : constant := 30; -- user defined signal 1
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118 SIGUSR2 : constant := 31; -- user defined signal 2
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119 SIGLOST : constant := 32; -- Resource lost (Sun); server died (GNU)
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120
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121 SIGADAABORT : constant := SIGABRT;
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122 -- Change this if you want to use another signal for task abort.
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123 -- SIGTERM might be a good one.
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124
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125 type Signal_Set is array (Natural range <>) of Signal;
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126
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127 Unmasked : constant Signal_Set := (
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128 SIGTRAP,
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129 -- To enable debugging on multithreaded applications, mark SIGTRAP to
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130 -- be kept unmasked.
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131
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132 SIGBUS,
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133
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134 SIGTTIN, SIGTTOU, SIGTSTP,
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135 -- Keep these three signals unmasked so that background processes
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136 -- and IO behaves as normal "C" applications
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137
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138 SIGPROF,
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139 -- To avoid confusing the profiler
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140
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141 SIGKILL, SIGSTOP);
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142 -- These two signals actually cannot be masked;
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143 -- POSIX simply won't allow it.
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144
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145 Reserved : constant Signal_Set :=
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146 -- I am not sure why the following signal is reserved.
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147 -- I guess they are not supported by this version of GNU/Hurd.
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148 (0 .. 0 => SIGVTALRM);
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149
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150 type sigset_t is private;
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151
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152 -- From /usr/include/signal.h /usr/include/i386-gnu/bits/sigset.h
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153 function sigaddset (set : access sigset_t; sig : Signal) return int;
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154 pragma Import (C, sigaddset, "sigaddset");
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155
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156 function sigdelset (set : access sigset_t; sig : Signal) return int;
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157 pragma Import (C, sigdelset, "sigdelset");
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158
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159 function sigfillset (set : access sigset_t) return int;
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160 pragma Import (C, sigfillset, "sigfillset");
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161
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162 function sigismember (set : access sigset_t; sig : Signal) return int;
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163 pragma Import (C, sigismember, "sigismember");
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164
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165 function sigemptyset (set : access sigset_t) return int;
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166 pragma Import (C, sigemptyset, "sigemptyset");
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167
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168 -- sigcontext is architecture dependent, so define it private
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169 type struct_sigcontext is private;
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170
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171 -- From /usr/include/i386-gnu/bits/sigaction.h: Note: arg. order differs
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172 type struct_sigaction is record
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173 sa_handler : System.Address;
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174 sa_mask : sigset_t;
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175 sa_flags : int;
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176 end record;
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177 pragma Convention (C, struct_sigaction);
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178
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179 type struct_sigaction_ptr is access all struct_sigaction;
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180
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181 -- From /usr/include/i386-gnu/bits/sigaction.h
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182 SIG_BLOCK : constant := 1;
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183 SIG_UNBLOCK : constant := 2;
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184 SIG_SETMASK : constant := 3;
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185
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186 -- From /usr/include/i386-gnu/bits/signum.h
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187 SIG_ERR : constant := 1;
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188 SIG_DFL : constant := 0;
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189 SIG_IGN : constant := 1;
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190 SIG_HOLD : constant := 2;
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191
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192 -- From /usr/include/i386-gnu/bits/sigaction.h
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193 SA_SIGINFO : constant := 16#0040#;
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194 SA_ONSTACK : constant := 16#0001#;
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195
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196 function sigaction
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197 (sig : Signal;
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198 act : struct_sigaction_ptr;
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199 oact : struct_sigaction_ptr) return int;
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200 pragma Import (C, sigaction, "sigaction");
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201
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202 ----------
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203 -- Time --
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204 ----------
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205
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206 Time_Slice_Supported : constant Boolean := True;
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207 -- Indicates whether time slicing is supported (i.e SCHED_RR is supported)
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208
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209 type timespec is private;
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210
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211 function nanosleep (rqtp, rmtp : access timespec) return int;
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212 pragma Import (C, nanosleep, "nanosleep");
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213
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214 type clockid_t is new int;
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215 CLOCK_REALTIME : constant clockid_t := 0;
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216
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217 -- From: /usr/include/time.h
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218 function clock_gettime
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219 (clock_id : clockid_t;
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220 tp : access timespec)
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221 return int;
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222 pragma Import (C, clock_gettime, "clock_gettime");
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223
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224 function clock_getres
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225 (clock_id : clockid_t;
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226 res : access timespec) return int;
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227 pragma Import (C, clock_getres, "clock_getres");
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228
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229 function To_Duration (TS : timespec) return Duration;
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230 pragma Inline (To_Duration);
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231
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232 function To_Timespec (D : Duration) return timespec;
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233 pragma Inline (To_Timespec);
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234
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235 -- From: /usr/include/unistd.h
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236 function sysconf (name : int) return long;
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237 pragma Import (C, sysconf);
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238
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239 -- From /usr/include/i386-gnu/bits/confname.h
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240 SC_CLK_TCK : constant := 2;
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241 SC_NPROCESSORS_ONLN : constant := 84;
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242
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243 -------------------------
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244 -- Priority Scheduling --
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245 -------------------------
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246 -- From /usr/include/i386-gnu/bits/sched.h
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247
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248 SCHED_OTHER : constant := 0;
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249 SCHED_FIFO : constant := 1;
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250 SCHED_RR : constant := 2;
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251
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252 function To_Target_Priority
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253 (Prio : System.Any_Priority) return Interfaces.C.int;
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254 -- Maps System.Any_Priority to a POSIX priority.
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255
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256 -------------
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257 -- Process --
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258 -------------
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259
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260 type pid_t is private;
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261
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262 -- From: /usr/include/signal.h
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263 function kill (pid : pid_t; sig : Signal) return int;
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264 pragma Import (C, kill, "kill");
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265
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266 -- From: /usr/include/unistd.h
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267 function getpid return pid_t;
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268 pragma Import (C, getpid, "getpid");
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269
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270 ---------
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271 -- LWP --
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272 ---------
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273
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274 -- From: /usr/include/pthread/pthread.h
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275 function lwp_self return System.Address;
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276 -- lwp_self does not exist on this thread library, revert to pthread_self
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277 -- which is the closest approximation (with getpid). This function is
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278 -- needed to share 7staprop.adb across POSIX-like targets.
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279 pragma Import (C, lwp_self, "pthread_self");
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280
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281 -------------
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282 -- Threads --
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283 -------------
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284
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285 type Thread_Body is access
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286 function (arg : System.Address) return System.Address;
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287 pragma Convention (C, Thread_Body);
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288
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289 function Thread_Body_Access is new
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290 Unchecked_Conversion (System.Address, Thread_Body);
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291
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292 -- From: /usr/include/bits/pthread.h:typedef int __pthread_t;
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293 -- /usr/include/pthread/pthreadtypes.h:typedef __pthread_t pthread_t;
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294 type pthread_t is new unsigned_long;
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295 subtype Thread_Id is pthread_t;
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296
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297 function To_pthread_t is new Unchecked_Conversion
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298 (unsigned_long, pthread_t);
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299
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300 type pthread_mutex_t is limited private;
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301 type pthread_rwlock_t is limited private;
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302 type pthread_cond_t is limited private;
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303 type pthread_attr_t is limited private;
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304 type pthread_mutexattr_t is limited private;
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305 type pthread_rwlockattr_t is limited private;
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306 type pthread_condattr_t is limited private;
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307 type pthread_key_t is private;
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308
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309 -- From /usr/include/pthread/pthreadtypes.h
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310 PTHREAD_CREATE_DETACHED : constant := 1;
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311 PTHREAD_CREATE_JOINABLE : constant := 0;
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312
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313 PTHREAD_SCOPE_PROCESS : constant := 1;
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314 PTHREAD_SCOPE_SYSTEM : constant := 0;
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315
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316 -----------
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317 -- Stack --
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318 -----------
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319
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320 -- From: /usr/include/i386-gnu/bits/sigstack.h
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321 type stack_t is record
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322 ss_sp : System.Address;
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323 ss_size : size_t;
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324 ss_flags : int;
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325 end record;
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326 pragma Convention (C, stack_t);
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327
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328 function sigaltstack
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329 (ss : not null access stack_t;
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330 oss : access stack_t) return int;
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331 pragma Import (C, sigaltstack, "sigaltstack");
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332
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333 Alternate_Stack : aliased System.Address;
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334 -- This is a dummy definition, never used (Alternate_Stack_Size is null)
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335
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336 Alternate_Stack_Size : constant := 0;
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337 -- No alternate signal stack is used on this platform
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338
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339 Stack_Base_Available : constant Boolean := False;
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340 -- Indicates whether the stack base is available on this target
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341
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342 function Get_Stack_Base (thread : pthread_t) return Address;
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343 pragma Inline (Get_Stack_Base);
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344 -- returns the stack base of the specified thread. Only call this function
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345 -- when Stack_Base_Available is True.
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346
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347 -- From: /usr/include/i386-gnu/bits/shm.h
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348 function Get_Page_Size return int;
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349 pragma Import (C, Get_Page_Size, "getpagesize");
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350 -- Returns the size of a page
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351
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352 -- From /usr/include/i386-gnu/bits/mman.h
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353 PROT_NONE : constant := 0;
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354 PROT_READ : constant := 4;
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355 PROT_WRITE : constant := 2;
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356 PROT_EXEC : constant := 1;
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357 PROT_ALL : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
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358 PROT_ON : constant := PROT_NONE;
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359 PROT_OFF : constant := PROT_ALL;
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360
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361 -- From /usr/include/i386-gnu/bits/mman.h
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362 function mprotect (addr : Address; len : size_t; prot : int) return int;
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363 pragma Import (C, mprotect);
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364
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365 ---------------------------------------
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366 -- Nonstandard Thread Initialization --
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367 ---------------------------------------
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368
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369 procedure pthread_init;
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370 pragma Inline (pthread_init);
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371 -- This is a dummy procedure to share some GNULLI files
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372
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373 -------------------------
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374 -- POSIX.1c Section 3 --
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375 -------------------------
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376
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377 -- From: /usr/include/signal.h:
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378 -- sigwait (__const sigset_t *__restrict __set, int *__restrict __sig)
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379 function sigwait (set : access sigset_t; sig : access Signal) return int;
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380 pragma Import (C, sigwait, "sigwait");
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381
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382 -- From: /usr/include/pthread/pthread.h:
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383 -- extern int pthread_kill (pthread_t thread, int signo);
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384 function pthread_kill (thread : pthread_t; sig : Signal) return int;
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385 pragma Import (C, pthread_kill, "pthread_kill");
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386
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387 -- From: /usr/include/i386-gnu/bits/sigthread.h
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388 -- extern int pthread_sigmask (int __how, __const __sigset_t *__newmask,
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389 -- __sigset_t *__oldmask) __THROW;
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390 function pthread_sigmask
|
|
|
391 (how : int;
|
|
|
392 set : access sigset_t;
|
|
|
393 oset : access sigset_t) return int;
|
|
|
394 pragma Import (C, pthread_sigmask, "pthread_sigmask");
|
|
|
395
|
|
|
396 --------------------------
|
|
|
397 -- POSIX.1c Section 11 --
|
|
|
398 --------------------------
|
|
|
399
|
|
|
400 -- From: /usr/include/pthread/pthread.h and
|
|
|
401 -- /usr/include/pthread/pthreadtypes.h
|
|
|
402 function pthread_mutexattr_init
|
|
|
403 (attr : access pthread_mutexattr_t) return int;
|
|
|
404 pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
|
|
|
405
|
|
|
406 function pthread_mutexattr_destroy
|
|
|
407 (attr : access pthread_mutexattr_t) return int;
|
|
|
408 pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
|
|
|
409
|
|
|
410 function pthread_mutex_init
|
|
|
411 (mutex : access pthread_mutex_t;
|
|
|
412 attr : access pthread_mutexattr_t) return int;
|
|
|
413 pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
|
|
|
414
|
|
|
415 function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
|
|
|
416 pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
|
|
|
417
|
|
|
418 function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
|
|
|
419 pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
|
|
|
420
|
|
|
421 function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
|
|
|
422 pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
|
|
|
423
|
|
|
424 function pthread_rwlockattr_init
|
|
|
425 (attr : access pthread_rwlockattr_t) return int;
|
|
|
426 pragma Import (C, pthread_rwlockattr_init, "pthread_rwlockattr_init");
|
|
|
427
|
|
|
428 function pthread_rwlockattr_destroy
|
|
|
429 (attr : access pthread_rwlockattr_t) return int;
|
|
|
430 pragma Import (C, pthread_rwlockattr_destroy, "pthread_rwlockattr_destroy");
|
|
|
431 PTHREAD_RWLOCK_PREFER_READER_NP : constant := 0;
|
|
|
432 PTHREAD_RWLOCK_PREFER_WRITER_NP : constant := 1;
|
|
|
433 PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP : constant := 2;
|
|
|
434
|
|
|
435 function pthread_rwlockattr_setkind_np
|
|
|
436 (attr : access pthread_rwlockattr_t;
|
|
|
437 pref : int) return int;
|
|
|
438 pragma Import
|
|
|
439 (C, pthread_rwlockattr_setkind_np, "pthread_rwlockattr_setkind_np");
|
|
|
440
|
|
|
441 function pthread_rwlock_init
|
|
|
442 (mutex : access pthread_rwlock_t;
|
|
|
443 attr : access pthread_rwlockattr_t) return int;
|
|
|
444 pragma Import (C, pthread_rwlock_init, "pthread_rwlock_init");
|
|
|
445
|
|
|
446 function pthread_rwlock_destroy
|
|
|
447 (mutex : access pthread_rwlock_t) return int;
|
|
|
448 pragma Import (C, pthread_rwlock_destroy, "pthread_rwlock_destroy");
|
|
|
449
|
|
|
450 function pthread_rwlock_rdlock (mutex : access pthread_rwlock_t) return int;
|
|
|
451 pragma Import (C, pthread_rwlock_rdlock, "pthread_rwlock_rdlock");
|
|
|
452
|
|
|
453 function pthread_rwlock_wrlock (mutex : access pthread_rwlock_t) return int;
|
|
|
454 pragma Import (C, pthread_rwlock_wrlock, "pthread_rwlock_wrlock");
|
|
|
455
|
|
|
456 function pthread_rwlock_unlock (mutex : access pthread_rwlock_t) return int;
|
|
|
457 pragma Import (C, pthread_rwlock_unlock, "pthread_rwlock_unlock");
|
|
|
458
|
|
|
459 function pthread_condattr_init
|
|
|
460 (attr : access pthread_condattr_t) return int;
|
|
|
461 pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
|
|
|
462
|
|
|
463 function pthread_condattr_destroy
|
|
|
464 (attr : access pthread_condattr_t) return int;
|
|
|
465 pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
|
|
|
466
|
|
|
467 function pthread_cond_init
|
|
|
468 (cond : access pthread_cond_t;
|
|
|
469 attr : access pthread_condattr_t) return int;
|
|
|
470 pragma Import (C, pthread_cond_init, "pthread_cond_init");
|
|
|
471
|
|
|
472 function pthread_cond_destroy (cond : access pthread_cond_t) return int;
|
|
|
473 pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
|
|
|
474
|
|
|
475 function pthread_cond_signal (cond : access pthread_cond_t) return int;
|
|
|
476 pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
|
|
|
477
|
|
|
478 function pthread_cond_wait
|
|
|
479 (cond : access pthread_cond_t;
|
|
|
480 mutex : access pthread_mutex_t) return int;
|
|
|
481 pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
|
|
|
482
|
|
|
483 function pthread_cond_timedwait
|
|
|
484 (cond : access pthread_cond_t;
|
|
|
485 mutex : access pthread_mutex_t;
|
|
|
486 abstime : access timespec) return int;
|
|
|
487 pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
|
|
|
488
|
|
|
489 Relative_Timed_Wait : constant Boolean := False;
|
|
|
490 -- pthread_cond_timedwait requires an absolute delay time
|
|
|
491
|
|
|
492 --------------------------
|
|
|
493 -- POSIX.1c Section 13 --
|
|
|
494 --------------------------
|
|
|
495 -- From /usr/include/pthread/pthreadtypes.h
|
|
|
496
|
|
|
497 PTHREAD_PRIO_NONE : constant := 0;
|
|
|
498 PTHREAD_PRIO_PROTECT : constant := 2;
|
|
|
499 PTHREAD_PRIO_INHERIT : constant := 1;
|
|
|
500
|
|
|
501 -- GNU/Hurd does not support Thread Priority Protection or Thread
|
|
|
502 -- Priority Inheritance and lacks some pthread_mutexattr_* functions.
|
|
|
503 -- Replace them with dummy versions.
|
|
|
504 -- From: /usr/include/pthread/pthread.h
|
|
|
505
|
|
|
506 function pthread_mutexattr_setprotocol
|
|
|
507 (attr : access pthread_mutexattr_t;
|
|
|
508 protocol : int) return int;
|
|
|
509 pragma Import (C, pthread_mutexattr_setprotocol,
|
|
|
510 "pthread_mutexattr_setprotocol");
|
|
|
511
|
|
|
512 function pthread_mutexattr_getprotocol
|
|
|
513 (attr : access pthread_mutexattr_t;
|
|
|
514 protocol : access int) return int;
|
|
|
515 pragma Import (C, pthread_mutexattr_getprotocol,
|
|
|
516 "pthread_mutexattr_getprotocol");
|
|
|
517
|
|
|
518 function pthread_mutexattr_setprioceiling
|
|
|
519 (attr : access pthread_mutexattr_t;
|
|
|
520 prioceiling : int) return int;
|
|
|
521
|
|
|
522 function pthread_mutexattr_getprioceiling
|
|
|
523 (attr : access pthread_mutexattr_t;
|
|
|
524 prioceiling : access int) return int;
|
|
|
525
|
|
|
526 type struct_sched_param is record
|
|
|
527 sched_priority : int; -- scheduling priority
|
|
|
528 end record;
|
|
|
529 pragma Convention (C, struct_sched_param);
|
|
|
530
|
|
|
531 function pthread_setschedparam
|
|
|
532 (thread : pthread_t;
|
|
|
533 policy : int;
|
|
|
534 param : access struct_sched_param) return int;
|
|
|
535
|
|
|
536 function pthread_attr_setscope
|
|
|
537 (attr : access pthread_attr_t;
|
|
|
538 contentionscope : int) return int;
|
|
|
539 pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
|
|
|
540
|
|
|
541 function pthread_attr_getscope
|
|
|
542 (attr : access pthread_attr_t;
|
|
|
543 contentionscope : access int) return int;
|
|
|
544 pragma Import (C, pthread_attr_getscope, "pthread_attr_getscope");
|
|
|
545
|
|
|
546 function pthread_attr_setinheritsched
|
|
|
547 (attr : access pthread_attr_t;
|
|
|
548 inheritsched : int) return int;
|
|
|
549 pragma Import (C, pthread_attr_setinheritsched,
|
|
|
550 "pthread_attr_setinheritsched");
|
|
|
551
|
|
|
552 function pthread_attr_getinheritsched
|
|
|
553 (attr : access pthread_attr_t;
|
|
|
554 inheritsched : access int) return int;
|
|
|
555 pragma Import (C, pthread_attr_getinheritsched,
|
|
|
556 "pthread_attr_getinheritsched");
|
|
|
557
|
|
|
558 function pthread_attr_setschedpolicy
|
|
|
559 (attr : access pthread_attr_t;
|
|
|
560 policy : int) return int;
|
|
|
561 pragma Import (C, pthread_attr_setschedpolicy, "pthread_setschedpolicy");
|
|
|
562
|
|
|
563 function sched_yield return int;
|
|
|
564 pragma Import (C, sched_yield, "sched_yield");
|
|
|
565
|
|
|
566 ---------------------------
|
|
|
567 -- P1003.1c - Section 16 --
|
|
|
568 ---------------------------
|
|
|
569
|
|
|
570 function pthread_attr_init
|
|
|
571 (attributes : access pthread_attr_t) return int;
|
|
|
572 pragma Import (C, pthread_attr_init, "pthread_attr_init");
|
|
|
573
|
|
|
574 function pthread_attr_destroy
|
|
|
575 (attributes : access pthread_attr_t) return int;
|
|
|
576 pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
|
|
|
577
|
|
|
578 function pthread_attr_setdetachstate
|
|
|
579 (attr : access pthread_attr_t;
|
|
|
580 detachstate : int) return int;
|
|
|
581 pragma Import
|
|
|
582 (C, pthread_attr_setdetachstate, "pthread_attr_setdetachstate");
|
|
|
583
|
|
|
584 function pthread_attr_setstacksize
|
|
|
585 (attr : access pthread_attr_t;
|
|
|
586 stacksize : size_t) return int;
|
|
|
587 pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
|
|
|
588
|
|
|
589 -- From: /usr/include/pthread/pthread.h
|
|
|
590 function pthread_create
|
|
|
591 (thread : access pthread_t;
|
|
|
592 attributes : access pthread_attr_t;
|
|
|
593 start_routine : Thread_Body;
|
|
|
594 arg : System.Address) return int;
|
|
|
595 pragma Import (C, pthread_create, "pthread_create");
|
|
|
596
|
|
|
597 procedure pthread_exit (status : System.Address);
|
|
|
598 pragma Import (C, pthread_exit, "pthread_exit");
|
|
|
599
|
|
|
600 function pthread_self return pthread_t;
|
|
|
601 pragma Import (C, pthread_self, "pthread_self");
|
|
|
602
|
|
|
603 --------------------------
|
|
|
604 -- POSIX.1c Section 17 --
|
|
|
605 --------------------------
|
|
|
606
|
|
|
607 function pthread_setspecific
|
|
|
608 (key : pthread_key_t;
|
|
|
609 value : System.Address) return int;
|
|
|
610 pragma Import (C, pthread_setspecific, "pthread_setspecific");
|
|
|
611
|
|
|
612 function pthread_getspecific (key : pthread_key_t) return System.Address;
|
|
|
613 pragma Import (C, pthread_getspecific, "pthread_getspecific");
|
|
|
614
|
|
|
615 type destructor_pointer is access procedure (arg : System.Address);
|
|
|
616 pragma Convention (C, destructor_pointer);
|
|
|
617
|
|
|
618 function pthread_key_create
|
|
|
619 (key : access pthread_key_t;
|
|
|
620 destructor : destructor_pointer) return int;
|
|
|
621 pragma Import (C, pthread_key_create, "pthread_key_create");
|
|
|
622
|
|
|
623 -- From /usr/include/i386-gnu/bits/sched.h
|
|
|
624 CPU_SETSIZE : constant := 1_024;
|
|
|
625
|
|
|
626 type bit_field is array (1 .. CPU_SETSIZE) of Boolean;
|
|
|
627 for bit_field'Size use CPU_SETSIZE;
|
|
|
628 pragma Pack (bit_field);
|
|
|
629 pragma Convention (C, bit_field);
|
|
|
630
|
|
|
631 type cpu_set_t is record
|
|
|
632 bits : bit_field;
|
|
|
633 end record;
|
|
|
634 pragma Convention (C, cpu_set_t);
|
|
|
635
|
|
|
636 private
|
|
|
637
|
|
|
638 type sigset_t is array (1 .. 4) of unsigned;
|
|
|
639
|
|
|
640 -- In GNU/Hurd the component sa_handler turns out to
|
|
|
641 -- be one a union type, and the selector is a macro:
|
|
|
642 -- #define sa_handler __sigaction_handler.sa_handler
|
|
|
643 -- #define sa_sigaction __sigaction_handler.sa_sigaction
|
|
|
644
|
|
|
645 -- Should we add a signal_context type here ?
|
|
|
646 -- How could it be done independent of the CPU architecture ?
|
|
|
647 -- sigcontext type is opaque, so it is architecturally neutral.
|
|
|
648 -- It is always passed as an access type, so define it as an empty record
|
|
|
649 -- since the contents are not used anywhere.
|
|
|
650 type struct_sigcontext is null record;
|
|
|
651 pragma Convention (C, struct_sigcontext);
|
|
|
652
|
|
|
653 type pid_t is new int;
|
|
|
654
|
|
|
655 type time_t is new long;
|
|
|
656
|
|
|
657 type timespec is record
|
|
|
658 tv_sec : time_t;
|
|
|
659 tv_nsec : long;
|
|
|
660 end record;
|
|
|
661 pragma Convention (C, timespec);
|
|
|
662
|
|
|
663 -- From: /usr/include/pthread/pthreadtypes.h:
|
|
|
664 -- typedef struct __pthread_attr pthread_attr_t;
|
|
|
665 -- /usr/include/i386-gnu/bits/thread-attr.h: struct __pthread_attr...
|
|
|
666 -- /usr/include/pthread/pthreadtypes.h: enum __pthread_contentionscope
|
|
|
667 -- enum __pthread_detachstate detachstate;
|
|
|
668 -- enum __pthread_inheritsched inheritsched;
|
|
|
669 -- enum __pthread_contentionscope contentionscope;
|
|
|
670 -- Not used: schedpolicy : int;
|
|
|
671 type pthread_attr_t is record
|
|
|
672 schedparam : struct_sched_param;
|
|
|
673 stackaddr : System.Address;
|
|
|
674 stacksize : size_t;
|
|
|
675 guardsize : size_t;
|
|
|
676 detachstate : int;
|
|
|
677 inheritsched : int;
|
|
|
678 contentionscope : int;
|
|
|
679 schedpolicy : int;
|
|
|
680 end record;
|
|
|
681 pragma Convention (C, pthread_attr_t);
|
|
|
682
|
|
|
683 -- From: /usr/include/pthread/pthreadtypes.h:
|
|
|
684 -- typedef struct __pthread_condattr pthread_condattr_t;
|
|
|
685 -- From: /usr/include/i386-gnu/bits/condition-attr.h:
|
|
|
686 -- struct __pthread_condattr {
|
|
|
687 -- enum __pthread_process_shared pshared;
|
|
|
688 -- __Clockid_T Clock;}
|
|
|
689 -- From: /usr/include/pthread/pthreadtypes.h:
|
|
|
690 -- enum __pthread_process_shared
|
|
|
691 type pthread_condattr_t is record
|
|
|
692 pshared : int;
|
|
|
693 clock : clockid_t;
|
|
|
694 end record;
|
|
|
695 pragma Convention (C, pthread_condattr_t);
|
|
|
696
|
|
|
697 -- From: /usr/include/pthread/pthreadtypes.h:
|
|
|
698 -- typedef struct __pthread_mutexattr pthread_mutexattr_t; and
|
|
|
699 -- /usr/include/i386-gnu/bits/mutex-attr.h
|
|
|
700 -- struct __pthread_mutexattr {
|
|
|
701 -- int prioceiling;
|
|
|
702 -- enum __pthread_mutex_protocol protocol;
|
|
|
703 -- enum __pthread_process_shared pshared;
|
|
|
704 -- enum __pthread_mutex_type mutex_type;};
|
|
|
705 type pthread_mutexattr_t is record
|
|
|
706 prioceiling : int;
|
|
|
707 protocol : int;
|
|
|
708 pshared : int;
|
|
|
709 mutex_type : int;
|
|
|
710 end record;
|
|
|
711 pragma Convention (C, pthread_mutexattr_t);
|
|
|
712
|
|
|
713 -- From: /usr/include/pthread/pthreadtypes.h
|
|
|
714 -- typedef struct __pthread_mutex pthread_mutex_t; and
|
|
|
715 -- /usr/include/i386-gnu/bits/mutex.h:
|
|
|
716 -- struct __pthread_mutex {
|
|
|
717 -- __pthread_spinlock_t __held;
|
|
|
718 -- __pthread_spinlock_t __lock;
|
|
|
719 -- /* in cthreads, mutex_init does not initialized the third
|
|
|
720 -- pointer, as such, we cannot rely on its value for anything. */
|
|
|
721 -- char *cthreadscompat1;
|
|
|
722 -- struct __pthread *__queue;
|
|
|
723 -- struct __pthread_mutexattr *attr;
|
|
|
724 -- void *data;
|
|
|
725 -- /* up to this point, we are completely compatible with cthreads
|
|
|
726 -- and what libc expects. */
|
|
|
727 -- void *owner;
|
|
|
728 -- unsigned locks;
|
|
|
729 -- /* if null then the default attributes apply. */
|
|
|
730 -- };
|
|
|
731
|
|
|
732 type pthread_mutex_t is record
|
|
|
733 held : int;
|
|
|
734 lock : int;
|
|
|
735 cthreadcompat : System.Address;
|
|
|
736 queue : System.Address;
|
|
|
737 attr : System.Address;
|
|
|
738 data : System.Address;
|
|
|
739 owner : System.Address;
|
|
|
740 locks : unsigned;
|
|
|
741 end record;
|
|
|
742 pragma Convention (C, pthread_mutex_t);
|
|
|
743 -- pointer needed?
|
|
|
744 -- type pthread_mutex_t_ptr is access pthread_mutex_t;
|
|
|
745
|
|
|
746 -- From: /usr/include/pthread/pthreadtypes.h:
|
|
|
747 -- typedef struct __pthread_cond pthread_cond_t;
|
|
|
748 -- typedef struct __pthread_condattr pthread_condattr_t;
|
|
|
749 -- /usr/include/i386-gnu/bits/condition.h:struct __pthread_cond{}
|
|
|
750 -- pthread_condattr_t: see above!
|
|
|
751 -- /usr/include/i386-gnu/bits/condition.h:
|
|
|
752 -- struct __pthread_condimpl *__impl;
|
|
|
753
|
|
|
754 type pthread_cond_t is record
|
|
|
755 lock : int;
|
|
|
756 queue : System.Address;
|
|
|
757 condattr : System.Address;
|
|
|
758 impl : System.Address;
|
|
|
759 data : System.Address;
|
|
|
760 end record;
|
|
|
761 pragma Convention (C, pthread_cond_t);
|
|
|
762
|
|
|
763 -- From: /usr/include/pthread/pthreadtypes.h:
|
|
|
764 -- typedef __pthread_key pthread_key_t; and
|
|
|
765 -- /usr/include/i386-gnu/bits/thread-specific.h:
|
|
|
766 -- typedef int __pthread_key;
|
|
|
767
|
|
|
768 type pthread_key_t is new int;
|
|
|
769
|
|
|
770 -- From: /usr/include/i386-gnu/bits/rwlock-attr.h:
|
|
|
771 -- struct __pthread_rwlockattr {
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|
|
772 -- enum __pthread_process_shared pshared; };
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|
|
773
|
|
|
774 type pthread_rwlockattr_t is record
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|
|
775 pshared : int;
|
|
|
776 end record;
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|
|
777 pragma Convention (C, pthread_rwlockattr_t);
|
|
|
778
|
|
|
779 -- From: /usr/include/i386-gnu/bits/rwlock.h:
|
|
|
780 -- struct __pthread_rwlock {
|
|
|
781 -- __pthread_spinlock_t __held;
|
|
|
782 -- __pthread_spinlock_t __lock;
|
|
|
783 -- int readers;
|
|
|
784 -- struct __pthread *readerqueue;
|
|
|
785 -- struct __pthread *writerqueue;
|
|
|
786 -- struct __pthread_rwlockattr *__attr;
|
|
|
787 -- void *__data; };
|
|
|
788
|
|
|
789 type pthread_rwlock_t is record
|
|
|
790 held : int;
|
|
|
791 lock : int;
|
|
|
792 readers : int;
|
|
|
793 readerqueue : System.Address;
|
|
|
794 writerqueue : System.Address;
|
|
|
795 attr : pthread_rwlockattr_t;
|
|
|
796 data : int;
|
|
|
797 end record;
|
|
|
798 pragma Convention (C, pthread_rwlock_t);
|
|
|
799
|
|
|
800 end System.OS_Interface;
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