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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT COMPILER COMPONENTS --
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4 -- --
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5 -- S E M _ C H 9 --
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6 -- --
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7 -- S p e c --
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8 -- --
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145
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9 -- Copyright (C) 1992-2019, Free Software Foundation, Inc. --
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111
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10 -- --
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11 -- GNAT is free software; you can redistribute it and/or modify it under --
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12 -- terms of the GNU General Public License as published by the Free Soft- --
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13 -- ware Foundation; either version 3, or (at your option) any later ver- --
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14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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17 -- for more details. You should have received a copy of the GNU General --
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18 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
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19 -- http://www.gnu.org/licenses for a complete copy of the license. --
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20 -- --
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21 -- GNAT was originally developed by the GNAT team at New York University. --
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22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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23 -- --
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24 ------------------------------------------------------------------------------
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25
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26 with Table;
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27 with Types; use Types;
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28
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29 package Sem_Ch9 is
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30 procedure Analyze_Abort_Statement (N : Node_Id);
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31 procedure Analyze_Accept_Alternative (N : Node_Id);
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32 procedure Analyze_Accept_Statement (N : Node_Id);
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33 procedure Analyze_Asynchronous_Select (N : Node_Id);
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34 procedure Analyze_Conditional_Entry_Call (N : Node_Id);
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35 procedure Analyze_Delay_Alternative (N : Node_Id);
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36 procedure Analyze_Delay_Relative (N : Node_Id);
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37 procedure Analyze_Delay_Until (N : Node_Id);
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38 procedure Analyze_Entry_Body (N : Node_Id);
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39 procedure Analyze_Entry_Body_Formal_Part (N : Node_Id);
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40 procedure Analyze_Entry_Call_Alternative (N : Node_Id);
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41 procedure Analyze_Entry_Declaration (N : Node_Id);
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42 procedure Analyze_Entry_Index_Specification (N : Node_Id);
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43 procedure Analyze_Protected_Body (N : Node_Id);
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44 procedure Analyze_Protected_Definition (N : Node_Id);
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45 procedure Analyze_Protected_Type_Declaration (N : Node_Id);
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46 procedure Analyze_Requeue (N : Node_Id);
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47 procedure Analyze_Selective_Accept (N : Node_Id);
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48 procedure Analyze_Single_Protected_Declaration (N : Node_Id);
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49 procedure Analyze_Single_Task_Declaration (N : Node_Id);
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50 procedure Analyze_Task_Body (N : Node_Id);
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51 procedure Analyze_Task_Definition (N : Node_Id);
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52 procedure Analyze_Task_Type_Declaration (N : Node_Id);
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53 procedure Analyze_Terminate_Alternative (N : Node_Id);
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54 procedure Analyze_Timed_Entry_Call (N : Node_Id);
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55 procedure Analyze_Triggering_Alternative (N : Node_Id);
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56
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57 procedure Install_Declarations (Spec : Entity_Id);
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58 -- Make visible in corresponding body the entities defined in a task,
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59 -- protected type declaration, or entry declaration.
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60
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61 ------------------------------
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62 -- Lock Free Data Structure --
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63 ------------------------------
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64
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65 -- A lock-free subprogram is a protected routine which references a unique
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66 -- protected scalar component and does not contain statements that cause
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67 -- side effects. Due to this restricted behavior, all references to shared
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68 -- data from within the subprogram can be synchronized through the use of
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69 -- atomic operations rather than relying on locks.
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70
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71 type Lock_Free_Subprogram is record
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72 Sub_Body : Node_Id;
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73 -- Reference to the body of a protected subprogram which meets the lock-
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74 -- free requirements.
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75
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76 Comp_Id : Entity_Id;
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77 -- Reference to the scalar component referenced from within Sub_Body
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78 end record;
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79
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80 -- This table establishes a relation between a protected subprogram body
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81 -- and a unique component it references. The table is used when building
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82 -- the lock-free versions of a protected subprogram body.
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83
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84 package Lock_Free_Subprogram_Table is new Table.Table (
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85 Table_Component_Type => Lock_Free_Subprogram,
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86 Table_Index_Type => Nat,
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87 Table_Low_Bound => 1,
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88 Table_Initial => 5,
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89 Table_Increment => 5,
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90 Table_Name => "Lock_Free_Subprogram_Table");
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91 end Sem_Ch9;
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