1 | // |
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2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
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3 | // |
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4 | // The contents of this file are covered under the licence agreement in the |
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5 | // file "LICENCE" distributed with Cforall. |
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6 | // |
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7 | // Actors.cpp -- generate code needed by the actor system |
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8 | // |
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9 | // Author : Colby Parsons |
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10 | // Created On : Thurs Jan 19 15:34:00 2023 |
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11 | // Last Modified By : Colby Parsons |
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12 | // Last Modified On : Thurs Jan 19 15:34:00 2023 |
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13 | // Update Count : 0 |
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14 | // |
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15 | |
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16 | #include "AST/Print.hpp" |
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17 | #include "AST/Decl.hpp" |
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18 | #include "AST/Pass.hpp" |
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19 | #include "AST/Type.hpp" |
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20 | #include "AST/Stmt.hpp" |
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21 | #include "AST/TranslationUnit.hpp" |
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22 | #include "AST/Expr.hpp" |
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23 | #include <algorithm> |
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24 | using namespace ast; |
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25 | using namespace std; |
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26 | |
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27 | namespace Concurrency { |
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28 | |
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29 | struct CollectactorStructDecls : public ast::WithGuards { |
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30 | unordered_set<const StructDecl *> & actorStructDecls; |
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31 | unordered_set<const StructDecl *> & messageStructDecls; |
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32 | const StructDecl ** requestDecl; |
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33 | const EnumDecl ** allocationDecl; |
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34 | const StructDecl ** actorDecl; |
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35 | const StructDecl ** msgDecl; |
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36 | StructDecl * parentDecl; |
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37 | bool insideStruct = false; |
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38 | bool namedDecl = false; |
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39 | |
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40 | // finds and sets a ptr to the allocation enum, which is needed in the next pass |
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41 | void previsit( const EnumDecl * decl ) { |
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42 | if( decl->name == "allocation" ) *allocationDecl = decl; |
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43 | } |
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44 | |
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45 | // finds and sets a ptr to the actor, message, and request structs, which are needed in the next pass |
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46 | void previsit( const StructDecl * decl ) { |
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47 | if ( !decl->body ) return; |
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48 | if ( decl->name == "actor" ) { |
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49 | actorStructDecls.insert( decl ); // skip inserting fwd decl |
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50 | *actorDecl = decl; |
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51 | } else if( decl->name == "message" ) { |
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52 | messageStructDecls.insert( decl ); // skip inserting fwd decl |
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53 | *msgDecl = decl; |
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54 | } else if( decl->name == "request" ) *requestDecl = decl; |
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55 | else { |
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56 | GuardValue(insideStruct); |
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57 | insideStruct = true; |
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58 | parentDecl = mutate( decl ); |
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59 | } |
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60 | } |
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61 | |
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62 | // this catches structs of the form: |
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63 | // struct dummy_actor { actor a; }; |
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64 | // since they should be: |
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65 | // struct dummy_actor { inline actor; }; |
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66 | void previsit ( const ObjectDecl * decl ) { |
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67 | if ( insideStruct && ! decl->name.empty() ) { |
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68 | GuardValue(namedDecl); |
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69 | namedDecl = true; |
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70 | } |
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71 | } |
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72 | |
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73 | // this collects the derived actor and message struct decl ptrs |
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74 | void postvisit( const StructInstType * node ) { |
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75 | if ( ! *actorDecl || ! *msgDecl ) return; |
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76 | if ( insideStruct && !namedDecl ) { |
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77 | auto actorIter = actorStructDecls.find( node->aggr() ); |
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78 | if ( actorIter != actorStructDecls.end() ) { |
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79 | actorStructDecls.insert( parentDecl ); |
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80 | return; |
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81 | } |
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82 | auto messageIter = messageStructDecls.find( node->aggr() ); |
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83 | if ( messageIter != messageStructDecls.end() ) { |
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84 | messageStructDecls.insert( parentDecl ); |
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85 | } |
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86 | } |
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87 | } |
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88 | |
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89 | public: |
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90 | CollectactorStructDecls( unordered_set<const StructDecl *> & actorStructDecls, unordered_set<const StructDecl *> & messageStructDecls, |
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91 | const StructDecl ** requestDecl, const EnumDecl ** allocationDecl, const StructDecl ** actorDecl, const StructDecl ** msgDecl ) |
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92 | : actorStructDecls( actorStructDecls ), messageStructDecls( messageStructDecls ), requestDecl( requestDecl ), |
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93 | allocationDecl( allocationDecl ), actorDecl(actorDecl), msgDecl(msgDecl) {} |
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94 | }; |
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95 | |
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96 | // keeps track of all fwdDecls of message routines so that we can hoist them to right after the appropriate decls |
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97 | class FwdDeclTable { |
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98 | |
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99 | // tracks which decls we have seen so that we can hoist the FunctionDecl to the highest point possible |
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100 | struct FwdDeclData { |
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101 | const StructDecl * actorDecl; |
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102 | const StructDecl * msgDecl; |
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103 | FunctionDecl * fwdDecl; |
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104 | bool actorFound; |
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105 | bool msgFound; |
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106 | |
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107 | bool readyToInsert() { return actorFound && msgFound; } |
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108 | bool foundActor() { actorFound = true; return readyToInsert(); } |
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109 | bool foundMsg() { msgFound = true; return readyToInsert(); } |
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110 | |
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111 | FwdDeclData( const StructDecl * actorDecl, const StructDecl * msgDecl, FunctionDecl * fwdDecl ) : |
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112 | actorDecl(actorDecl), msgDecl(msgDecl), fwdDecl(fwdDecl), actorFound(false), msgFound(false) {} |
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113 | }; |
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114 | |
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115 | // map indexed by actor struct ptr |
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116 | // value is map of all FwdDeclData that contains said actor struct ptr |
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117 | // inner map is indexed by the message struct ptr of FwdDeclData |
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118 | unordered_map<const StructDecl *, unordered_map<const StructDecl *, FwdDeclData *>> actorMap; |
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119 | |
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120 | // this map is the same except the outer map is indexed by message ptr and the inner is indexed by actor ptr |
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121 | unordered_map<const StructDecl *, unordered_map<const StructDecl *, FwdDeclData *>> msgMap; |
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122 | |
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123 | void insert( const StructDecl * decl, const StructDecl * otherDecl, unordered_map<const StructDecl *, unordered_map<const StructDecl *, FwdDeclData *>> & map, FwdDeclData * data ) { |
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124 | auto iter = map.find( decl ); |
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125 | if ( iter != map.end() ) { // if decl exists in map append data to existing inner map |
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126 | iter->second.emplace( make_pair( otherDecl, data ) ); |
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127 | } else { // else create inner map for key |
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128 | map.emplace( make_pair( decl, unordered_map<const StructDecl *, FwdDeclData *>( { make_pair( otherDecl, data ) } ) ) ); |
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129 | } |
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130 | } |
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131 | |
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132 | public: |
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133 | // insert decl into table so that we can fwd declare it later (average cost: O(1)) |
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134 | void insertDecl( const StructDecl * actorDecl, const StructDecl * msgDecl, FunctionDecl * fwdDecl ) { |
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135 | FwdDeclData * declToInsert = new FwdDeclData( actorDecl, msgDecl, fwdDecl ); |
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136 | insert( actorDecl, msgDecl, actorMap, declToInsert ); |
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137 | insert( msgDecl, actorDecl, msgMap, declToInsert ); |
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138 | } |
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139 | |
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140 | // returns list of decls to insert after current struct decl |
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141 | // Over the entire pass the runtime of this routine is O(r) where r is the # of receive routines |
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142 | list<FunctionDecl *> updateDecl( const StructDecl * decl, bool isMsg ) { |
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143 | unordered_map<const StructDecl *, unordered_map<const StructDecl *, FwdDeclData *>> & map = isMsg ? msgMap : actorMap; |
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144 | unordered_map<const StructDecl *, unordered_map<const StructDecl *, FwdDeclData *>> & otherMap = isMsg ? actorMap : msgMap; |
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145 | auto iter = map.find( decl ); |
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146 | list<FunctionDecl *> toInsertAfter; // this is populated with decls that are ready to insert |
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147 | if ( iter == map.end() ) return toInsertAfter; |
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148 | |
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149 | // iterate over inner map |
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150 | unordered_map<const StructDecl *, FwdDeclData *> & currInnerMap = iter->second; |
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151 | for ( auto innerIter = currInnerMap.begin(); innerIter != currInnerMap.end(); ) { |
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152 | FwdDeclData * currentDatum = innerIter->second; |
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153 | bool readyToInsert = isMsg ? currentDatum->foundMsg() : currentDatum->foundActor(); |
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154 | if ( ! readyToInsert ) { ++innerIter; continue; } |
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155 | |
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156 | // readyToInsert is true so we are good to insert the forward decl of the message fn |
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157 | toInsertAfter.push_back( currentDatum->fwdDecl ); |
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158 | |
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159 | // need to remove from other map before deleting |
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160 | // find inner map in other map ( other map is actor map if original is msg map and vice versa ) |
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161 | const StructDecl * otherDecl = isMsg ? currentDatum->actorDecl : currentDatum->msgDecl; |
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162 | auto otherMapIter = otherMap.find( otherDecl ); |
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163 | |
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164 | unordered_map<const StructDecl *, FwdDeclData *> & otherInnerMap = otherMapIter->second; |
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165 | |
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166 | // find the FwdDeclData we need to remove in the other inner map |
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167 | auto otherInnerIter = otherInnerMap.find( decl ); |
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168 | |
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169 | // remove references to deleted FwdDeclData from current inner map |
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170 | innerIter = currInnerMap.erase( innerIter ); // this does the increment so no explicit inc needed |
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171 | |
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172 | // remove references to deleted FwdDeclData from other inner map |
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173 | otherInnerMap.erase( otherInnerIter ); |
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174 | |
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175 | // if other inner map is now empty, remove key from other outer map |
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176 | if ( otherInnerMap.empty() ) |
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177 | otherMap.erase( otherDecl ); |
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178 | |
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179 | // now we are safe to delete the FwdDeclData since we are done with it |
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180 | // and we have removed all references to it from our data structures |
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181 | delete currentDatum; |
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182 | } |
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183 | |
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184 | // if current inner map is now empty, remove key from outer map. |
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185 | // Have to do this after iterating for safety |
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186 | if ( currInnerMap.empty() ) |
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187 | map.erase( decl ); |
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188 | |
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189 | return toInsertAfter; |
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190 | } |
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191 | }; |
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192 | |
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193 | // generates the definitions of send operators for actors |
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194 | // collects data needed for next pass that does the circular defn resolution |
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195 | // for message send operators (via table above) |
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196 | struct GenFuncsCreateTables : public ast::WithDeclsToAdd { |
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197 | unordered_set<const StructDecl *> & actorStructDecls; |
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198 | unordered_set<const StructDecl *> & messageStructDecls; |
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199 | const StructDecl ** requestDecl; |
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200 | const EnumDecl ** allocationDecl; |
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201 | const StructDecl ** actorDecl; |
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202 | const StructDecl ** msgDecl; |
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203 | FwdDeclTable & forwardDecls; |
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204 | |
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205 | // generates the operator for actor message sends |
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206 | void postvisit( const FunctionDecl * decl ) { |
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207 | // return if not of the form receive( param1, param2 ) or if it is a forward decl |
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208 | if ( decl->name != "receive" || decl->params.size() != 2 || !decl->stmts ) return; |
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209 | |
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210 | // the params should be references |
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211 | const ReferenceType * derivedActorRef = dynamic_cast<const ReferenceType *>(decl->params.at(0)->get_type()); |
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212 | const ReferenceType * derivedMsgRef = dynamic_cast<const ReferenceType *>(decl->params.at(1)->get_type()); |
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213 | if ( !derivedActorRef || !derivedMsgRef ) return; |
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214 | |
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215 | // the references should be to struct instances |
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216 | const StructInstType * arg1InstType = dynamic_cast<const StructInstType *>(derivedActorRef->base.get()); |
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217 | const StructInstType * arg2InstType = dynamic_cast<const StructInstType *>(derivedMsgRef->base.get()); |
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218 | if ( !arg1InstType || !arg2InstType ) return; |
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219 | |
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220 | // If the struct instances are derived actor and message types then generate the message send routine |
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221 | auto actorIter = actorStructDecls.find( arg1InstType->aggr() ); |
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222 | auto messageIter = messageStructDecls.find( arg2InstType->aggr() ); |
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223 | if ( actorIter != actorStructDecls.end() && messageIter != messageStructDecls.end() ) { |
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224 | ////////////////////////////////////////////////////////////////////// |
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225 | // The following generates this wrapper for all receive(derived_actor &, derived_msg &) functions |
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226 | /* base_actor and base_msg are output params |
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227 | static inline allocation __CFA_receive_wrap( derived_actor & receiver, derived_msg & msg, actor ** base_actor, message ** base_msg ) { |
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228 | base_actor = &receiver; |
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229 | base_msg = &msg; |
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230 | return receive( receiver, msg ); |
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231 | } |
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232 | */ |
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233 | CompoundStmt * wrapBody = new CompoundStmt( decl->location ); |
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234 | |
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235 | // generates: base_actor = &receiver; |
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236 | wrapBody->push_back( new ExprStmt( decl->location, |
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237 | UntypedExpr::createAssign( decl->location, |
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238 | UntypedExpr::createDeref( decl->location, new NameExpr( decl->location, "base_actor" ) ), |
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239 | new AddressExpr( decl->location, new NameExpr( decl->location, "receiver" ) ) |
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240 | ) |
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241 | )); |
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242 | |
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243 | // generates: base_msg = &msg; |
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244 | wrapBody->push_back( new ExprStmt( decl->location, |
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245 | UntypedExpr::createAssign( decl->location, |
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246 | UntypedExpr::createDeref( decl->location, new NameExpr( decl->location, "base_msg" ) ), |
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247 | new AddressExpr( decl->location, new NameExpr( decl->location, "msg" ) ) |
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248 | ) |
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249 | )); |
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250 | |
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251 | // generates: return receive( receiver, msg ); |
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252 | wrapBody->push_back( new ReturnStmt( decl->location, |
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253 | new UntypedExpr ( decl->location, |
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254 | new NameExpr( decl->location, "receive" ), |
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255 | { |
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256 | new NameExpr( decl->location, "receiver" ), |
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257 | new NameExpr( decl->location, "msg" ) |
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258 | } |
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259 | ) |
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260 | )); |
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261 | |
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262 | // create receive wrapper to extract base message and actor pointer |
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263 | // put it all together into the complete function decl from above |
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264 | FunctionDecl * receiveWrapper = new FunctionDecl( |
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265 | decl->location, |
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266 | "__CFA_receive_wrap", |
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267 | { |
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268 | new ObjectDecl( |
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269 | decl->location, |
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270 | "receiver", |
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271 | ast::deepCopy( derivedActorRef ) |
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272 | ), |
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273 | new ObjectDecl( |
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274 | decl->location, |
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275 | "msg", |
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276 | ast::deepCopy( derivedMsgRef ) |
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277 | ), |
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278 | new ObjectDecl( |
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279 | decl->location, |
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280 | "base_actor", |
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281 | new PointerType( new PointerType( new StructInstType( *actorDecl ) ) ) |
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282 | ), |
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283 | new ObjectDecl( |
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284 | decl->location, |
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285 | "base_msg", |
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286 | new PointerType( new PointerType( new StructInstType( *msgDecl ) ) ) |
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287 | ) |
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288 | }, // params |
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289 | { |
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290 | new ObjectDecl( |
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291 | decl->location, |
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292 | "__CFA_receive_wrap_ret", |
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293 | new EnumInstType( *allocationDecl ) |
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294 | ) |
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295 | }, |
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296 | wrapBody, // body |
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297 | { Storage::Static }, // storage |
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298 | Linkage::Cforall, // linkage |
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299 | {}, // attributes |
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300 | { Function::Inline } |
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301 | ); |
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302 | |
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303 | declsToAddAfter.push_back( receiveWrapper ); |
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304 | |
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305 | ////////////////////////////////////////////////////////////////////// |
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306 | // The following generates this send message operator routine for all receive(derived_actor &, derived_msg &) functions |
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307 | /* |
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308 | static inline derived_actor & ?|?( derived_actor & receiver, derived_msg & msg ) { |
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309 | request new_req; |
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310 | allocation (*my_work_fn)( derived_actor &, derived_msg & ) = receive; |
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311 | __receive_fn fn = (__receive_fn)my_work_fn; |
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312 | new_req{ &receiver, &msg, fn }; |
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313 | send( receiver, new_req ); |
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314 | return receiver; |
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315 | } |
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316 | */ |
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317 | CompoundStmt * sendBody = new CompoundStmt( decl->location ); |
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318 | |
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319 | // Generates: request new_req; |
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320 | sendBody->push_back( new DeclStmt( |
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321 | decl->location, |
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322 | new ObjectDecl( |
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323 | decl->location, |
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324 | "new_req", |
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325 | new StructInstType( *requestDecl ) |
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326 | ) |
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327 | )); |
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328 | |
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329 | // Function type is: allocation (*)( derived_actor &, derived_msg &, actor **, message ** ) |
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330 | FunctionType * derivedReceive = new FunctionType(); |
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331 | derivedReceive->params.push_back( ast::deepCopy( derivedActorRef ) ); |
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332 | derivedReceive->params.push_back( ast::deepCopy( derivedMsgRef ) ); |
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333 | derivedReceive->params.push_back( new PointerType( new PointerType( new StructInstType( *actorDecl ) ) ) ); |
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334 | derivedReceive->params.push_back( new PointerType( new PointerType( new StructInstType( *msgDecl ) ) ) ); |
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335 | derivedReceive->returns.push_back( new EnumInstType( *allocationDecl ) ); |
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336 | |
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337 | // Generates: allocation (*my_work_fn)( derived_actor &, derived_msg &, actor **, message ** ) = receive; |
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338 | sendBody->push_back( new DeclStmt( |
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339 | decl->location, |
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340 | new ObjectDecl( |
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341 | decl->location, |
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342 | "my_work_fn", |
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343 | new PointerType( derivedReceive ), |
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344 | new SingleInit( decl->location, new NameExpr( decl->location, "__CFA_receive_wrap" ) ) |
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345 | ) |
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346 | )); |
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347 | |
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348 | // Function type is: allocation (*)( actor &, message & ) |
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349 | FunctionType * genericReceive = new FunctionType(); |
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350 | genericReceive->params.push_back( new ReferenceType( new StructInstType( *actorDecl ) ) ); |
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351 | genericReceive->params.push_back( new ReferenceType( new StructInstType( *msgDecl ) ) ); |
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352 | genericReceive->params.push_back( new PointerType( new PointerType( new StructInstType( *actorDecl ) ) ) ); |
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353 | genericReceive->params.push_back( new PointerType( new PointerType( new StructInstType( *msgDecl ) ) ) ); |
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354 | genericReceive->returns.push_back( new EnumInstType( *allocationDecl ) ); |
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355 | |
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356 | // Generates: allocation (*fn)( actor &, message & ) = (allocation (*)( actor &, message & ))my_work_fn; |
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357 | // More readable synonymous code: |
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358 | // typedef allocation (*__receive_fn)(actor &, message &); |
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359 | // __receive_fn fn = (__receive_fn)my_work_fn; |
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360 | sendBody->push_back( new DeclStmt( |
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361 | decl->location, |
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362 | new ObjectDecl( |
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363 | decl->location, |
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364 | "fn", |
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365 | new PointerType( genericReceive ), |
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366 | new SingleInit( decl->location, |
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367 | new CastExpr( decl->location, new NameExpr( decl->location, "my_work_fn" ), new PointerType( genericReceive ), ExplicitCast ) |
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368 | ) |
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369 | ) |
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370 | )); |
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371 | |
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372 | // Generates: new_req{ (actor *)&receiver, (message *)&msg, fn }; |
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373 | sendBody->push_back( new ExprStmt( |
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374 | decl->location, |
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375 | new UntypedExpr ( |
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376 | decl->location, |
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377 | new NameExpr( decl->location, "?{}" ), |
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378 | { |
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379 | new NameExpr( decl->location, "new_req" ), |
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380 | new CastExpr( decl->location, new AddressExpr( new NameExpr( decl->location, "receiver" ) ), new PointerType( new StructInstType( *actorDecl ) ), ExplicitCast ), |
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381 | new CastExpr( decl->location, new AddressExpr( new NameExpr( decl->location, "msg" ) ), new PointerType( new StructInstType( *msgDecl ) ), ExplicitCast ), |
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382 | new NameExpr( decl->location, "fn" ) |
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383 | } |
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384 | ) |
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385 | )); |
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386 | |
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387 | // Generates: send( receiver, new_req ); |
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388 | sendBody->push_back( new ExprStmt( |
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389 | decl->location, |
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390 | new UntypedExpr ( |
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391 | decl->location, |
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392 | new NameExpr( decl->location, "send" ), |
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393 | { |
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394 | { |
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395 | new NameExpr( decl->location, "receiver" ), |
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396 | new NameExpr( decl->location, "new_req" ) |
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397 | } |
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398 | } |
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399 | ) |
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400 | )); |
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401 | |
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402 | // Generates: return receiver; |
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403 | sendBody->push_back( new ReturnStmt( decl->location, new NameExpr( decl->location, "receiver" ) ) ); |
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404 | |
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405 | // put it all together into the complete function decl from above |
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406 | FunctionDecl * sendOperatorFunction = new FunctionDecl( |
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407 | decl->location, |
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408 | "?|?", |
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409 | { |
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410 | new ObjectDecl( |
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411 | decl->location, |
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412 | "receiver", |
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413 | ast::deepCopy( derivedActorRef ) |
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414 | ), |
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415 | new ObjectDecl( |
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416 | decl->location, |
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417 | "msg", |
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418 | ast::deepCopy( derivedMsgRef ) |
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419 | ) |
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420 | }, // params |
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421 | { |
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422 | new ObjectDecl( |
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423 | decl->location, |
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424 | "receiver_ret", |
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425 | ast::deepCopy( derivedActorRef ) |
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426 | ) |
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427 | }, |
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428 | nullptr, // body |
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429 | { Storage::Static }, // storage |
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430 | Linkage::Cforall, // linkage |
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431 | {}, // attributes |
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432 | { Function::Inline } |
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433 | ); |
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434 | |
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435 | // forward decls to resolve use before decl problem for '|' routines |
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436 | forwardDecls.insertDecl( *actorIter, *messageIter , ast::deepCopy( sendOperatorFunction ) ); |
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437 | |
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438 | sendOperatorFunction->stmts = sendBody; |
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439 | declsToAddAfter.push_back( sendOperatorFunction ); |
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440 | } |
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441 | } |
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442 | |
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443 | public: |
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444 | GenFuncsCreateTables( unordered_set<const StructDecl *> & actorStructDecls, unordered_set<const StructDecl *> & messageStructDecls, |
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445 | const StructDecl ** requestDecl, const EnumDecl ** allocationDecl, const StructDecl ** actorDecl, const StructDecl ** msgDecl, |
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446 | FwdDeclTable & forwardDecls ) : actorStructDecls(actorStructDecls), messageStructDecls(messageStructDecls), |
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447 | requestDecl(requestDecl), allocationDecl(allocationDecl), actorDecl(actorDecl), msgDecl(msgDecl), forwardDecls(forwardDecls) {} |
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448 | }; |
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449 | |
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450 | |
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451 | // separate pass is needed since this pass resolves circular defn issues |
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452 | // generates the forward declarations of the send operator for actor routines |
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453 | struct FwdDeclOperator : public ast::WithDeclsToAdd { |
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454 | unordered_set<const StructDecl *> & actorStructDecls; |
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455 | unordered_set<const StructDecl *> & messageStructDecls; |
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456 | FwdDeclTable & forwardDecls; |
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457 | |
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458 | // handles forward declaring the message operator |
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459 | void postvisit( const StructDecl * decl ) { |
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460 | list<FunctionDecl *> toAddAfter; |
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461 | auto actorIter = actorStructDecls.find( decl ); |
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462 | if ( actorIter != actorStructDecls.end() ) { // this is a derived actor decl |
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463 | // get list of fwd decls that we can now insert |
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464 | toAddAfter = forwardDecls.updateDecl( decl, false ); |
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465 | |
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466 | // get rid of decl from actorStructDecls since we no longer need it |
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467 | actorStructDecls.erase( actorIter ); |
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468 | } else { |
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469 | auto messageIter = messageStructDecls.find( decl ); |
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470 | if ( messageIter == messageStructDecls.end() ) return; |
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471 | |
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472 | toAddAfter = forwardDecls.updateDecl( decl, true ); |
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473 | |
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474 | // get rid of decl from messageStructDecls since we no longer need it |
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475 | messageStructDecls.erase( messageIter ); |
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476 | } |
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477 | |
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478 | // add the fwd decls to declsToAddAfter |
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479 | for ( FunctionDecl * func : toAddAfter ) { |
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480 | declsToAddAfter.push_back( func ); |
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481 | } |
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482 | } |
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483 | |
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484 | public: |
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485 | FwdDeclOperator( unordered_set<const StructDecl *> & actorStructDecls, unordered_set<const StructDecl *> & messageStructDecls, |
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486 | FwdDeclTable & forwardDecls ) : actorStructDecls(actorStructDecls), messageStructDecls(messageStructDecls), forwardDecls(forwardDecls) {} |
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487 | }; |
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488 | |
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489 | void implementActors( TranslationUnit & translationUnit ) { |
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490 | // unordered_maps to collect all derived actor and message types |
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491 | unordered_set<const StructDecl *> actorStructDecls; |
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492 | unordered_set<const StructDecl *> messageStructDecls; |
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493 | FwdDeclTable forwardDecls; |
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494 | |
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495 | // for storing through the passes |
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496 | // these are populated with various important struct decls |
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497 | const StructDecl * requestDeclPtr = nullptr; |
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498 | const EnumDecl * allocationDeclPtr = nullptr; |
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499 | const StructDecl * actorDeclPtr = nullptr; |
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500 | const StructDecl * msgDeclPtr = nullptr; |
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501 | |
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502 | // double pointer to modify local ptrs above |
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503 | const StructDecl ** requestDecl = &requestDeclPtr; |
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504 | const EnumDecl ** allocationDecl = &allocationDeclPtr; |
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505 | const StructDecl ** actorDecl = &actorDeclPtr; |
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506 | const StructDecl ** msgDecl = &msgDeclPtr; |
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507 | |
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508 | // first pass collects ptrs to allocation enum, request type, and generic receive fn typedef |
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509 | // also populates maps of all derived actors and messages |
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510 | Pass<CollectactorStructDecls>::run( translationUnit, actorStructDecls, messageStructDecls, requestDecl, |
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511 | allocationDecl, actorDecl, msgDecl ); |
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512 | |
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513 | // check that we have found all the decls we need from <actor.hfa>, if not no need to run the rest of this pass |
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514 | if ( !allocationDeclPtr || !requestDeclPtr || !actorDeclPtr || !msgDeclPtr ) |
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515 | return; |
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516 | |
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517 | // second pass locates all receive() routines that overload the generic receive fn |
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518 | // it then generates the appropriate operator '|' send routines for the receive routines |
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519 | Pass<GenFuncsCreateTables>::run( translationUnit, actorStructDecls, messageStructDecls, requestDecl, |
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520 | allocationDecl, actorDecl, msgDecl, forwardDecls ); |
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521 | |
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522 | // The third pass forward declares operator '|' send routines |
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523 | Pass<FwdDeclOperator>::run( translationUnit, actorStructDecls, messageStructDecls, forwardDecls ); |
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524 | } |
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525 | |
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526 | } // namespace Concurrency |
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527 | |
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528 | // Local Variables: // |
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529 | // tab-width: 4 // |
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530 | // mode: c++ // |
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531 | // compile-command: "make install" // |
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532 | // End: // |
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533 | |
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