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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT RUN-TIME COMPONENTS --
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4 -- --
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5 -- S Y S T E M . P A R T I T I O N _ I N T E R F A C E --
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6 -- --
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7 -- B o d y --
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8 -- (Dummy body for non-distributed case) --
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9 -- --
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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 -- GNARL 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 -- GNAT was originally developed by the GNAT team at New York 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 package body System.Partition_Interface is
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34
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35 pragma Warnings (Off); -- suppress warnings for unreferenced formals
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36
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37 M : constant := 7;
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38
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39 type String_Access is access String;
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40
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41 -- To have a minimal implementation of U'Partition_ID
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42
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43 type Pkg_Node;
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44 type Pkg_List is access Pkg_Node;
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45 type Pkg_Node is record
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46 Name : String_Access;
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47 Subp_Info : System.Address;
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48 Subp_Info_Len : Integer;
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49 Next : Pkg_List;
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50 end record;
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51
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52 Pkg_Head : Pkg_List;
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53 Pkg_Tail : Pkg_List;
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54
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55 function getpid return Integer;
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56 pragma Import (C, getpid);
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57
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58 PID : constant Integer := getpid;
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59
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60 function Lower (S : String) return String;
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61
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62 Passive_Prefix : constant String := "SP__";
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63 -- String prepended in top of shared passive packages
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64
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65 procedure Check
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66 (Name : Unit_Name;
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67 Version : String;
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68 RCI : Boolean := True)
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69 is
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70 begin
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71 null;
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72 end Check;
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73
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74 -----------------------------
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131
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75 -- Get_Active_Partition_ID --
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111
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76 -----------------------------
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77
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78 function Get_Active_Partition_ID
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79 (Name : Unit_Name) return System.RPC.Partition_ID
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80 is
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81 P : Pkg_List := Pkg_Head;
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82 N : String := Lower (Name);
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83
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84 begin
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85 while P /= null loop
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86 if P.Name.all = N then
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87 return Get_Local_Partition_ID;
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88 end if;
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89
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90 P := P.Next;
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91 end loop;
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92
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93 return M;
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94 end Get_Active_Partition_ID;
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95
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96 ------------------------
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97 -- Get_Active_Version --
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98 ------------------------
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99
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100 function Get_Active_Version (Name : Unit_Name) return String is
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101 begin
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102 return "";
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103 end Get_Active_Version;
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104
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105 ----------------------------
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131
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106 -- Get_Local_Partition_ID --
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111
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107 ----------------------------
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108
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109 function Get_Local_Partition_ID return System.RPC.Partition_ID is
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110 begin
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111 return System.RPC.Partition_ID (PID mod M);
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112 end Get_Local_Partition_ID;
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113
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114 ------------------------------
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115 -- Get_Passive_Partition_ID --
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116 ------------------------------
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117
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118 function Get_Passive_Partition_ID
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119 (Name : Unit_Name) return System.RPC.Partition_ID
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120 is
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121 begin
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122 return Get_Local_Partition_ID;
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123 end Get_Passive_Partition_ID;
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124
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125 -------------------------
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126 -- Get_Passive_Version --
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127 -------------------------
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128
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129 function Get_Passive_Version (Name : Unit_Name) return String is
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130 begin
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131 return "";
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132 end Get_Passive_Version;
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133
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134 ------------------
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135 -- Get_RAS_Info --
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136 ------------------
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137
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138 procedure Get_RAS_Info
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139 (Name : Unit_Name;
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140 Subp_Id : Subprogram_Id;
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141 Proxy_Address : out Interfaces.Unsigned_64)
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142 is
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143 LName : constant String := Lower (Name);
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144 N : Pkg_List;
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145 begin
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146 N := Pkg_Head;
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147 while N /= null loop
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148 if N.Name.all = LName then
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149 declare
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150 subtype Subprogram_Array is RCI_Subp_Info_Array
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151 (First_RCI_Subprogram_Id ..
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152 First_RCI_Subprogram_Id + N.Subp_Info_Len - 1);
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153 Subprograms : Subprogram_Array;
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154 for Subprograms'Address use N.Subp_Info;
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155 pragma Import (Ada, Subprograms);
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156 begin
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157 Proxy_Address :=
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158 Interfaces.Unsigned_64 (Subprograms (Integer (Subp_Id)).Addr);
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159 return;
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160 end;
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161 end if;
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162 N := N.Next;
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163 end loop;
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164 Proxy_Address := 0;
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165 end Get_RAS_Info;
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166
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167 ------------------------------
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168 -- Get_RCI_Package_Receiver --
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169 ------------------------------
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170
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171 function Get_RCI_Package_Receiver
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172 (Name : Unit_Name) return Interfaces.Unsigned_64
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173 is
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174 begin
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175 return 0;
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176 end Get_RCI_Package_Receiver;
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177
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178 -------------------------------
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179 -- Get_Unique_Remote_Pointer --
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180 -------------------------------
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181
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182 procedure Get_Unique_Remote_Pointer
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183 (Handler : in out RACW_Stub_Type_Access)
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184 is
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185 begin
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186 null;
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187 end Get_Unique_Remote_Pointer;
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188
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189 -----------
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190 -- Lower --
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191 -----------
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192
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193 function Lower (S : String) return String is
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194 T : String := S;
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195
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196 begin
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197 for J in T'Range loop
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198 if T (J) in 'A' .. 'Z' then
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199 T (J) := Character'Val (Character'Pos (T (J)) -
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200 Character'Pos ('A') +
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201 Character'Pos ('a'));
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202 end if;
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203 end loop;
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204
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205 return T;
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206 end Lower;
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207
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208 -------------------------------------
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209 -- Raise_Program_Error_Unknown_Tag --
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210 -------------------------------------
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211
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212 procedure Raise_Program_Error_Unknown_Tag
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213 (E : Ada.Exceptions.Exception_Occurrence)
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214 is
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215 begin
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216 raise Program_Error with Ada.Exceptions.Exception_Message (E);
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217 end Raise_Program_Error_Unknown_Tag;
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218
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219 -----------------
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220 -- RCI_Locator --
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221 -----------------
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222
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223 package body RCI_Locator is
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224
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225 -----------------------------
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226 -- Get_Active_Partition_ID --
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227 -----------------------------
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228
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229 function Get_Active_Partition_ID return System.RPC.Partition_ID is
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230 P : Pkg_List := Pkg_Head;
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231 N : String := Lower (RCI_Name);
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232
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233 begin
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234 while P /= null loop
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235 if P.Name.all = N then
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236 return Get_Local_Partition_ID;
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237 end if;
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238
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239 P := P.Next;
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240 end loop;
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241
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242 return M;
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243 end Get_Active_Partition_ID;
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244
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245 ------------------------------
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246 -- Get_RCI_Package_Receiver --
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247 ------------------------------
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248
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249 function Get_RCI_Package_Receiver return Interfaces.Unsigned_64 is
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250 begin
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251 return 0;
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252 end Get_RCI_Package_Receiver;
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253
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254 end RCI_Locator;
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255
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256 ------------------------------
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257 -- Register_Passive_Package --
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258 ------------------------------
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259
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260 procedure Register_Passive_Package
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261 (Name : Unit_Name;
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262 Version : String := "")
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263 is
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264 begin
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265 Register_Receiving_Stub
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266 (Passive_Prefix & Name, null, Version, System.Null_Address, 0);
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267 end Register_Passive_Package;
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268
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269 -----------------------------
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270 -- Register_Receiving_Stub --
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271 -----------------------------
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272
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273 procedure Register_Receiving_Stub
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274 (Name : Unit_Name;
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275 Receiver : RPC_Receiver;
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276 Version : String := "";
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277 Subp_Info : System.Address;
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278 Subp_Info_Len : Integer)
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279 is
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280 N : constant Pkg_List :=
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281 new Pkg_Node'(new String'(Lower (Name)),
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282 Subp_Info, Subp_Info_Len,
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283 Next => null);
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284 begin
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285 if Pkg_Tail = null then
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286 Pkg_Head := N;
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287 else
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288 Pkg_Tail.Next := N;
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289 end if;
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290 Pkg_Tail := N;
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291 end Register_Receiving_Stub;
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292
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293 ---------
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294 -- Run --
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295 ---------
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296
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297 procedure Run
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298 (Main : Main_Subprogram_Type := null)
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299 is
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300 begin
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301 if Main /= null then
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302 Main.all;
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303 end if;
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304 end Run;
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305
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306 --------------------
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307 -- Same_Partition --
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308 --------------------
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309
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310 function Same_Partition
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311 (Left : not null access RACW_Stub_Type;
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312 Right : not null access RACW_Stub_Type) return Boolean
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313 is
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314 pragma Unreferenced (Left);
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315 pragma Unreferenced (Right);
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316 begin
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317 return True;
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318 end Same_Partition;
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319
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320 end System.Partition_Interface;
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