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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) 1991-1994, 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 the HP-UX 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
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43 with Interfaces.C;
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44
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45 package System.OS_Interface is
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46 pragma Preelaborate;
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47
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48 pragma Linker_Options ("-lcma");
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49
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50 subtype int is Interfaces.C.int;
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51 subtype short is Interfaces.C.short;
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52 subtype long is Interfaces.C.long;
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53 subtype unsigned is Interfaces.C.unsigned;
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54 subtype unsigned_short is Interfaces.C.unsigned_short;
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55 subtype unsigned_long is Interfaces.C.unsigned_long;
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56 subtype unsigned_char is Interfaces.C.unsigned_char;
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57 subtype plain_char is Interfaces.C.plain_char;
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58 subtype size_t is Interfaces.C.size_t;
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59
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60 -----------
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61 -- Errno --
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62 -----------
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63
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64 function errno return int;
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65 pragma Import (C, errno, "__get_errno");
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66
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67 EAGAIN : constant := 11;
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68 EINTR : constant := 4;
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69 EINVAL : constant := 22;
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70 ENOMEM : constant := 12;
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71 ETIME : constant := 52;
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72 ETIMEDOUT : constant := 238;
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73
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74 FUNC_ERR : constant := -1;
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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
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80 Max_Interrupt : constant := 44;
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81 type Signal is new int range 0 .. Max_Interrupt;
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82 for Signal'Size use int'Size;
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83
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84 SIGHUP : constant := 1; -- hangup
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85 SIGINT : constant := 2; -- interrupt (rubout)
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86 SIGQUIT : constant := 3; -- quit (ASCD FS)
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87 SIGILL : constant := 4; -- illegal instruction (not reset)
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88 SIGTRAP : constant := 5; -- trace trap (not reset)
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89 SIGIOT : constant := 6; -- IOT instruction
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90 SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the future
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91 SIGEMT : constant := 7; -- EMT instruction
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92 SIGFPE : constant := 8; -- floating point exception
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93 SIGKILL : constant := 9; -- kill (cannot be caught or ignored)
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94 SIGBUS : constant := 10; -- bus error
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95 SIGSEGV : constant := 11; -- segmentation violation
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96 SIGSYS : constant := 12; -- bad argument to system call
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97 SIGPIPE : constant := 13; -- write on a pipe with no one to read it
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98 SIGALRM : constant := 14; -- alarm clock
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99 SIGTERM : constant := 15; -- software termination signal from kill
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100 SIGUSR1 : constant := 16; -- user defined signal 1
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101 SIGUSR2 : constant := 17; -- user defined signal 2
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102 SIGCLD : constant := 18; -- alias for SIGCHLD
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103 SIGCHLD : constant := 18; -- child status change
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104 SIGPWR : constant := 19; -- power-fail restart
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105 SIGVTALRM : constant := 20; -- virtual timer alarm
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106 SIGPROF : constant := 21; -- profiling timer alarm
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107 SIGIO : constant := 22; -- asynchronous I/O
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108 SIGPOLL : constant := 22; -- pollable event occurred
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109 SIGWINCH : constant := 23; -- window size change
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110 SIGSTOP : constant := 24; -- stop (cannot be caught or ignored)
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111 SIGTSTP : constant := 25; -- user stop requested from tty
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112 SIGCONT : constant := 26; -- stopped process has been continued
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113 SIGTTIN : constant := 27; -- background tty read attempted
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114 SIGTTOU : constant := 28; -- background tty write attempted
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115 SIGURG : constant := 29; -- urgent condition on IO channel
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116 SIGLOST : constant := 30; -- remote lock lost (NFS)
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117 SIGDIL : constant := 32; -- DIL signal
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118 SIGXCPU : constant := 33; -- CPU time limit exceeded (setrlimit)
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119 SIGXFSZ : constant := 34; -- file size limit exceeded (setrlimit)
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120
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121 SIGADAABORT : constant := SIGABRT;
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122 -- Note: on other targets, we usually use SIGABRT, but on HP/UX, it
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123 -- appears that SIGABRT can't be used in sigwait(), so we use SIGTERM.
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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 (SIGBUS, SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP);
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129
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130 Reserved : constant Signal_Set := (SIGKILL, SIGSTOP);
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131
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132 type sigset_t is private;
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133
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134 type isr_address is access procedure (sig : int);
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135 pragma Convention (C, isr_address);
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136
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137 function intr_attach (sig : int; handler : isr_address) return long;
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138
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139 Intr_Attach_Reset : constant Boolean := True;
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140 -- True if intr_attach is reset after an interrupt handler is called
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141
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142 function sigaddset (set : access sigset_t; sig : Signal) return int;
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143 pragma Import (C, sigaddset, "sigaddset");
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144
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145 function sigdelset (set : access sigset_t; sig : Signal) return int;
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146 pragma Import (C, sigdelset, "sigdelset");
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147
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148 function sigfillset (set : access sigset_t) return int;
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149 pragma Import (C, sigfillset, "sigfillset");
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150
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151 function sigismember (set : access sigset_t; sig : Signal) return int;
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152 pragma Import (C, sigismember, "sigismember");
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153
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154 function sigemptyset (set : access sigset_t) return int;
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155 pragma Import (C, sigemptyset, "sigemptyset");
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156
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157 type Signal_Handler is access procedure (signo : Signal);
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158
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159 type struct_sigaction is record
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160 sa_handler : System.Address;
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161 sa_mask : sigset_t;
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162 sa_flags : int;
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163 end record;
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164 pragma Convention (C, struct_sigaction);
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165 type struct_sigaction_ptr is access all struct_sigaction;
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166
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167 SA_RESTART : constant := 16#40#;
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168 SA_SIGINFO : constant := 16#10#;
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169 SA_ONSTACK : constant := 16#01#;
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170
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171 SIG_BLOCK : constant := 0;
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172 SIG_UNBLOCK : constant := 1;
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173 SIG_SETMASK : constant := 2;
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174
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175 SIG_DFL : constant := 0;
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176 SIG_IGN : constant := 1;
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177 SIG_ERR : constant := -1;
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178
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179 function sigaction
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180 (sig : Signal;
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181 act : struct_sigaction_ptr;
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182 oact : struct_sigaction_ptr) return int;
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183 pragma Import (C, sigaction, "sigaction");
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184
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185 ----------
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186 -- Time --
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187 ----------
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188
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189 type timespec is private;
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190
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191 function nanosleep (rqtp, rmtp : access timespec) return int;
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192 pragma Import (C, nanosleep);
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193
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194 type clockid_t is new int;
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195
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196 function Clock_Gettime
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197 (Clock_Id : clockid_t; Tp : access timespec) return int;
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198 pragma Import (C, Clock_Gettime);
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199
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200 function To_Duration (TS : timespec) return Duration;
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201 pragma Inline (To_Duration);
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202
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203 function To_Timespec (D : Duration) return timespec;
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204 pragma Inline (To_Timespec);
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205
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206 -------------------------
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207 -- Priority Scheduling --
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208 -------------------------
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209
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210 SCHED_FIFO : constant := 0;
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211 SCHED_RR : constant := 1;
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212 SCHED_OTHER : constant := 2;
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213
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214 -------------
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215 -- Process --
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216 -------------
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217
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218 type pid_t is private;
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219
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220 function kill (pid : pid_t; sig : Signal) return int;
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221 pragma Import (C, kill, "kill");
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222
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223 function getpid return pid_t;
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224 pragma Import (C, getpid, "getpid");
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225
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226 -------------
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227 -- Threads --
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228 -------------
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229
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230 type Thread_Body is access
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231 function (arg : System.Address) return System.Address;
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232 pragma Convention (C, Thread_Body);
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233
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234 function Thread_Body_Access is new
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235 Ada.Unchecked_Conversion (System.Address, Thread_Body);
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236
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237 type pthread_t is private;
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238 subtype Thread_Id is pthread_t;
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239
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240 type pthread_mutex_t is limited private;
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241 type pthread_cond_t is limited private;
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242 type pthread_attr_t is limited private;
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243 type pthread_mutexattr_t is limited private;
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244 type pthread_condattr_t is limited private;
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245 type pthread_key_t is private;
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246
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247 -- Read/Write lock not supported on HPUX. To add support both types
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248 -- pthread_rwlock_t and pthread_rwlockattr_t must properly be defined
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249 -- with the associated routines pthread_rwlock_[init/destroy] and
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250 -- pthread_rwlock_[rdlock/wrlock/unlock].
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251
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252 subtype pthread_rwlock_t is pthread_mutex_t;
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253 subtype pthread_rwlockattr_t is pthread_mutexattr_t;
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254
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255 -----------
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256 -- Stack --
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257 -----------
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258
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259 function Get_Stack_Base (thread : pthread_t) return Address;
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260 pragma Inline (Get_Stack_Base);
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261 -- This is a dummy procedure to share some GNULLI files
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262
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263 ---------------------------------------
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264 -- Nonstandard Thread Initialization --
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265 ---------------------------------------
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266
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267 procedure pthread_init;
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268 pragma Inline (pthread_init);
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269 -- This is a dummy procedure to share some GNULLI files
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270
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271 -------------------------
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272 -- POSIX.1c Section 3 --
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273 -------------------------
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274
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275 function sigwait (set : access sigset_t) return int;
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276 pragma Import (C, sigwait, "cma_sigwait");
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277
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278 function sigwait
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279 (set : access sigset_t;
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280 sig : access Signal) return int;
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281 pragma Inline (sigwait);
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282 -- DCE_THREADS has a nonstandard sigwait
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283
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284 function pthread_kill
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285 (thread : pthread_t;
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286 sig : Signal) return int;
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287 pragma Inline (pthread_kill);
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288 -- DCE_THREADS doesn't have pthread_kill
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289
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290 function pthread_sigmask
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291 (how : int;
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292 set : access sigset_t;
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293 oset : access sigset_t) return int;
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294 -- DCE THREADS does not have pthread_sigmask. Instead, it uses sigprocmask
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295 -- to do the signal handling when the thread library is sucked in.
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296 pragma Import (C, pthread_sigmask, "sigprocmask");
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297
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298 --------------------------
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299 -- POSIX.1c Section 11 --
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300 --------------------------
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301
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302 function pthread_mutexattr_init
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303 (attr : access pthread_mutexattr_t) return int;
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304 -- DCE_THREADS has a nonstandard pthread_mutexattr_init
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305
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306 function pthread_mutexattr_destroy
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307 (attr : access pthread_mutexattr_t) return int;
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308 -- DCE_THREADS has a nonstandard pthread_mutexattr_destroy
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309
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310 function pthread_mutex_init
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311 (mutex : access pthread_mutex_t;
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312 attr : access pthread_mutexattr_t) return int;
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313 -- DCE_THREADS has a nonstandard pthread_mutex_init
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314
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315 function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
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316 -- DCE_THREADS has a nonstandard pthread_mutex_destroy
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317
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318 function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
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319 pragma Inline (pthread_mutex_lock);
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320 -- DCE_THREADS has nonstandard pthread_mutex_lock
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321
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322 function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
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323 pragma Inline (pthread_mutex_unlock);
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324 -- DCE_THREADS has nonstandard pthread_mutex_lock
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325
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326 function pthread_condattr_init
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327 (attr : access pthread_condattr_t) return int;
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328 -- DCE_THREADS has nonstandard pthread_condattr_init
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329
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330 function pthread_condattr_destroy
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331 (attr : access pthread_condattr_t) return int;
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332 -- DCE_THREADS has nonstandard pthread_condattr_destroy
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333
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334 function pthread_cond_init
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335 (cond : access pthread_cond_t;
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336 attr : access pthread_condattr_t) return int;
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337 -- DCE_THREADS has nonstandard pthread_cond_init
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338
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339 function pthread_cond_destroy (cond : access pthread_cond_t) return int;
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340 -- DCE_THREADS has nonstandard pthread_cond_destroy
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341
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342 function pthread_cond_signal (cond : access pthread_cond_t) return int;
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343 pragma Inline (pthread_cond_signal);
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344 -- DCE_THREADS has nonstandard pthread_cond_signal
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345
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346 function pthread_cond_wait
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347 (cond : access pthread_cond_t;
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348 mutex : access pthread_mutex_t) return int;
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349 pragma Inline (pthread_cond_wait);
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350 -- DCE_THREADS has a nonstandard pthread_cond_wait
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351
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352 function pthread_cond_timedwait
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353 (cond : access pthread_cond_t;
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354 mutex : access pthread_mutex_t;
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355 abstime : access timespec) return int;
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356 pragma Inline (pthread_cond_timedwait);
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357 -- DCE_THREADS has a nonstandard pthread_cond_timedwait
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358
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359 --------------------------
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360 -- POSIX.1c Section 13 --
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361 --------------------------
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362
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363 type struct_sched_param is record
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364 sched_priority : int; -- scheduling priority
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365 end record;
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366
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367 function pthread_setschedparam
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368 (thread : pthread_t;
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369 policy : int;
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370 param : access struct_sched_param) return int;
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371 pragma Inline (pthread_setschedparam);
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372 -- DCE_THREADS has a nonstandard pthread_setschedparam
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373
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374 function sched_yield return int;
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375 pragma Inline (sched_yield);
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376 -- DCE_THREADS has a nonstandard sched_yield
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377
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378 ---------------------------
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379 -- P1003.1c - Section 16 --
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380 ---------------------------
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381
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382 function pthread_attr_init (attributes : access pthread_attr_t) return int;
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383 pragma Inline (pthread_attr_init);
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384 -- DCE_THREADS has a nonstandard pthread_attr_init
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385
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386 function pthread_attr_destroy
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387 (attributes : access pthread_attr_t) return int;
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388 pragma Inline (pthread_attr_destroy);
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389 -- DCE_THREADS has a nonstandard pthread_attr_destroy
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390
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391 function pthread_attr_setstacksize
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392 (attr : access pthread_attr_t;
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393 stacksize : size_t) return int;
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394 pragma Inline (pthread_attr_setstacksize);
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395 -- DCE_THREADS has a nonstandard pthread_attr_setstacksize
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396
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397 function pthread_create
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398 (thread : access pthread_t;
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399 attributes : access pthread_attr_t;
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400 start_routine : Thread_Body;
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401 arg : System.Address) return int;
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402 pragma Inline (pthread_create);
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403 -- DCE_THREADS has a nonstandard pthread_create
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404
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405 procedure pthread_detach (thread : access pthread_t);
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406 pragma Import (C, pthread_detach);
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407
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408 procedure pthread_exit (status : System.Address);
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409 pragma Import (C, pthread_exit, "pthread_exit");
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410
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411 function pthread_self return pthread_t;
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412 pragma Import (C, pthread_self, "pthread_self");
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413
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414 --------------------------
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415 -- POSIX.1c Section 17 --
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416 --------------------------
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417
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418 function pthread_setspecific
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419 (key : pthread_key_t;
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420 value : System.Address) return int;
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421 pragma Inline (pthread_setspecific);
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422 -- DCE_THREADS has a nonstandard pthread_setspecific
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423
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424 function pthread_getspecific (key : pthread_key_t) return System.Address;
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425 pragma Inline (pthread_getspecific);
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426 -- DCE_THREADS has a nonstandard pthread_getspecific
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427
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428 type destructor_pointer is access procedure (arg : System.Address);
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429 pragma Convention (C, destructor_pointer);
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430
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431 function pthread_key_create
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432 (key : access pthread_key_t;
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433 destructor : destructor_pointer) return int;
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434 pragma Inline (pthread_key_create);
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435 -- DCE_THREADS has a nonstandard pthread_key_create
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436
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437 private
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438
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439 type array_type_1 is array (Integer range 0 .. 7) of unsigned_long;
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440 type sigset_t is record
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441 X_X_sigbits : array_type_1;
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442 end record;
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443 pragma Convention (C, sigset_t);
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444
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445 type pid_t is new int;
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446
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447 type time_t is new long;
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448
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449 type timespec is record
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450 tv_sec : time_t;
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451 tv_nsec : long;
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452 end record;
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453 pragma Convention (C, timespec);
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454
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455 CLOCK_REALTIME : constant clockid_t := 1;
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456
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457 type cma_t_address is new System.Address;
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458
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459 type cma_t_handle is record
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460 field1 : cma_t_address;
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461 field2 : Short_Integer;
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462 field3 : Short_Integer;
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463 end record;
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464 for cma_t_handle'Size use 64;
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465
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466 type pthread_attr_t is new cma_t_handle;
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467 pragma Convention (C_Pass_By_Copy, pthread_attr_t);
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468
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469 type pthread_condattr_t is new cma_t_handle;
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470 pragma Convention (C_Pass_By_Copy, pthread_condattr_t);
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471
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472 type pthread_mutexattr_t is new cma_t_handle;
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473 pragma Convention (C_Pass_By_Copy, pthread_mutexattr_t);
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474
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475 type pthread_t is new cma_t_handle;
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476 pragma Convention (C_Pass_By_Copy, pthread_t);
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477
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478 type pthread_mutex_t is new cma_t_handle;
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479 pragma Convention (C_Pass_By_Copy, pthread_mutex_t);
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480
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481 type pthread_cond_t is new cma_t_handle;
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482 pragma Convention (C_Pass_By_Copy, pthread_cond_t);
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483
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484 type pthread_key_t is new int;
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485
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486 end System.OS_Interface;
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