1 | // |
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2 | // Cforall Version 1.0.0 Copyright (C) 2016 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 | // Keywords.cc -- |
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8 | // |
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9 | // Author : Thierry Delisle |
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10 | // Created On : Mon Mar 13 12:41:22 2017 |
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11 | // Last Modified By : |
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12 | // Last Modified On : |
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13 | // Update Count : 10 |
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14 | // |
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15 | |
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16 | #include "Concurrency/Keywords.h" |
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17 | |
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18 | #include <cassert> // for assert |
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19 | #include <string> // for string, operator== |
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20 | |
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21 | #include <iostream> |
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22 | |
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23 | #include "Common/Examine.h" // for isMainFor |
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24 | #include "Common/PassVisitor.h" // for PassVisitor |
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25 | #include "Common/SemanticError.h" // for SemanticError |
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26 | #include "Common/utility.h" // for deleteAll, map_range |
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27 | #include "CodeGen/OperatorTable.h" // for isConstructor |
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28 | #include "ControlStruct/LabelGenerator.h" // for LebelGenerator |
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29 | #include "InitTweak/InitTweak.h" // for getPointerBase |
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30 | #include "SynTree/LinkageSpec.h" // for Cforall |
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31 | #include "SynTree/Constant.h" // for Constant |
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32 | #include "SynTree/Declaration.h" // for StructDecl, FunctionDecl, ObjectDecl |
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33 | #include "SynTree/Expression.h" // for VariableExpr, ConstantExpr, Untype... |
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34 | #include "SynTree/Initializer.h" // for SingleInit, ListInit, Initializer ... |
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35 | #include "SynTree/Label.h" // for Label |
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36 | #include "SynTree/Statement.h" // for CompoundStmt, DeclStmt, ExprStmt |
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37 | #include "SynTree/Type.h" // for StructInstType, Type, PointerType |
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38 | #include "SynTree/Visitor.h" // for Visitor, acceptAll |
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39 | #include "Virtual/Tables.h" |
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40 | |
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41 | class Attribute; |
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42 | |
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43 | namespace Concurrency { |
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44 | inline static std::string getTypeIdName( std::string const & exception_name ) { |
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45 | return exception_name.empty() ? std::string() : Virtual::typeIdType( exception_name ); |
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46 | } |
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47 | inline static std::string getVTableName( std::string const & exception_name ) { |
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48 | return exception_name.empty() ? std::string() : Virtual::vtableTypeName( exception_name ); |
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49 | } |
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50 | |
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51 | // Only detects threads constructed with the keyword thread. |
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52 | inline static bool isThread( DeclarationWithType * decl ) { |
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53 | Type * baseType = decl->get_type()->stripDeclarator(); |
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54 | StructInstType * instType = dynamic_cast<StructInstType *>( baseType ); |
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55 | if ( nullptr == instType ) { return false; } |
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56 | return instType->baseStruct->is_thread(); |
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57 | } |
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58 | |
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59 | //============================================================================================= |
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60 | // Pass declarations |
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61 | //============================================================================================= |
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62 | |
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63 | //----------------------------------------------------------------------------- |
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64 | //Handles sue type declarations : |
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65 | // sue MyType { struct MyType { |
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66 | // int data; int data; |
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67 | // a_struct_t more_data; a_struct_t more_data; |
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68 | // => NewField_t newField; |
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69 | // }; }; |
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70 | // static inline NewField_t * getter_name( MyType * this ) { return &this->newField; } |
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71 | // |
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72 | class ConcurrentSueKeyword : public WithDeclsToAdd { |
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73 | public: |
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74 | |
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75 | ConcurrentSueKeyword( std::string&& type_name, std::string&& field_name, |
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76 | std::string&& getter_name, std::string&& context_error, std::string&& exception_name, |
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77 | bool needs_main, AggregateDecl::Aggregate cast_target ) : |
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78 | type_name( type_name ), field_name( field_name ), getter_name( getter_name ), |
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79 | context_error( context_error ), exception_name( exception_name ), |
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80 | typeid_name( getTypeIdName( exception_name ) ), |
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81 | vtable_name( getVTableName( exception_name ) ), |
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82 | needs_main( needs_main ), cast_target( cast_target ) {} |
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83 | |
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84 | virtual ~ConcurrentSueKeyword() {} |
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85 | |
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86 | Declaration * postmutate( StructDecl * decl ); |
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87 | DeclarationWithType * postmutate( FunctionDecl * decl ); |
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88 | |
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89 | void handle( StructDecl * ); |
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90 | void addTypeId( StructDecl * ); |
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91 | void addVtableForward( StructDecl * ); |
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92 | FunctionDecl * forwardDeclare( StructDecl * ); |
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93 | ObjectDecl * addField( StructDecl * ); |
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94 | void addRoutines( ObjectDecl *, FunctionDecl * ); |
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95 | |
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96 | virtual bool is_target( StructDecl * decl ) = 0; |
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97 | |
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98 | Expression * postmutate( KeywordCastExpr * cast ); |
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99 | |
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100 | private: |
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101 | const std::string type_name; |
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102 | const std::string field_name; |
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103 | const std::string getter_name; |
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104 | const std::string context_error; |
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105 | const std::string exception_name; |
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106 | const std::string typeid_name; |
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107 | const std::string vtable_name; |
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108 | bool needs_main; |
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109 | AggregateDecl::Aggregate cast_target; |
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110 | |
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111 | StructDecl * type_decl = nullptr; |
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112 | FunctionDecl * dtor_decl = nullptr; |
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113 | StructDecl * except_decl = nullptr; |
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114 | StructDecl * typeid_decl = nullptr; |
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115 | StructDecl * vtable_decl = nullptr; |
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116 | }; |
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117 | |
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118 | |
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119 | //----------------------------------------------------------------------------- |
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120 | //Handles thread type declarations : |
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121 | // thread Mythread { struct MyThread { |
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122 | // int data; int data; |
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123 | // a_struct_t more_data; a_struct_t more_data; |
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124 | // => $thread __thrd_d; |
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125 | // }; }; |
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126 | // static inline $thread * get_thread( MyThread * this ) { return &this->__thrd_d; } |
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127 | // |
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128 | class ThreadKeyword final : public ConcurrentSueKeyword { |
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129 | public: |
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130 | |
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131 | ThreadKeyword() : ConcurrentSueKeyword( |
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132 | "$thread", |
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133 | "__thrd", |
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134 | "get_thread", |
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135 | "thread keyword requires threads to be in scope, add #include <thread.hfa>\n", |
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136 | "ThreadCancelled", |
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137 | true, |
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138 | AggregateDecl::Thread |
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139 | ) |
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140 | {} |
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141 | |
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142 | virtual ~ThreadKeyword() {} |
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143 | |
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144 | virtual bool is_target( StructDecl * decl ) override final { return decl->is_thread(); } |
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145 | |
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146 | static void implement( std::list< Declaration * > & translationUnit ) { |
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147 | PassVisitor< ThreadKeyword > impl; |
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148 | mutateAll( translationUnit, impl ); |
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149 | } |
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150 | }; |
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151 | |
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152 | //----------------------------------------------------------------------------- |
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153 | //Handles coroutine type declarations : |
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154 | // coroutine MyCoroutine { struct MyCoroutine { |
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155 | // int data; int data; |
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156 | // a_struct_t more_data; a_struct_t more_data; |
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157 | // => $coroutine __cor_d; |
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158 | // }; }; |
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159 | // static inline $coroutine * get_coroutine( MyCoroutine * this ) { return &this->__cor_d; } |
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160 | // |
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161 | class CoroutineKeyword final : public ConcurrentSueKeyword { |
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162 | public: |
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163 | |
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164 | CoroutineKeyword() : ConcurrentSueKeyword( |
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165 | "$coroutine", |
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166 | "__cor", |
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167 | "get_coroutine", |
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168 | "coroutine keyword requires coroutines to be in scope, add #include <coroutine.hfa>\n", |
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169 | "CoroutineCancelled", |
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170 | true, |
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171 | AggregateDecl::Coroutine |
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172 | ) |
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173 | {} |
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174 | |
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175 | virtual ~CoroutineKeyword() {} |
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176 | |
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177 | virtual bool is_target( StructDecl * decl ) override final { return decl->is_coroutine(); } |
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178 | |
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179 | static void implement( std::list< Declaration * > & translationUnit ) { |
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180 | PassVisitor< CoroutineKeyword > impl; |
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181 | mutateAll( translationUnit, impl ); |
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182 | } |
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183 | }; |
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184 | |
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185 | |
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186 | |
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187 | //----------------------------------------------------------------------------- |
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188 | //Handles monitor type declarations : |
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189 | // monitor MyMonitor { struct MyMonitor { |
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190 | // int data; int data; |
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191 | // a_struct_t more_data; a_struct_t more_data; |
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192 | // => $monitor __mon_d; |
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193 | // }; }; |
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194 | // static inline $monitor * get_coroutine( MyMonitor * this ) { return &this->__cor_d; } |
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195 | // |
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196 | class MonitorKeyword final : public ConcurrentSueKeyword { |
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197 | public: |
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198 | |
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199 | MonitorKeyword() : ConcurrentSueKeyword( |
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200 | "$monitor", |
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201 | "__mon", |
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202 | "get_monitor", |
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203 | "monitor keyword requires monitors to be in scope, add #include <monitor.hfa>\n", |
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204 | "", |
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205 | false, |
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206 | AggregateDecl::Monitor |
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207 | ) |
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208 | {} |
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209 | |
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210 | virtual ~MonitorKeyword() {} |
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211 | |
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212 | virtual bool is_target( StructDecl * decl ) override final { return decl->is_monitor(); } |
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213 | |
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214 | static void implement( std::list< Declaration * > & translationUnit ) { |
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215 | PassVisitor< MonitorKeyword > impl; |
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216 | mutateAll( translationUnit, impl ); |
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217 | } |
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218 | }; |
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219 | |
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220 | //----------------------------------------------------------------------------- |
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221 | //Handles generator type declarations : |
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222 | // generator MyGenerator { struct MyGenerator { |
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223 | // int data; int data; |
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224 | // a_struct_t more_data; a_struct_t more_data; |
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225 | // => int __gen_next; |
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226 | // }; }; |
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227 | // |
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228 | class GeneratorKeyword final : public ConcurrentSueKeyword { |
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229 | public: |
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230 | |
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231 | GeneratorKeyword() : ConcurrentSueKeyword( |
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232 | "$generator", |
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233 | "__generator_state", |
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234 | "get_generator", |
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235 | "Unable to find builtin type $generator\n", |
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236 | "", |
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237 | true, |
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238 | AggregateDecl::Generator |
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239 | ) |
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240 | {} |
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241 | |
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242 | virtual ~GeneratorKeyword() {} |
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243 | |
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244 | virtual bool is_target( StructDecl * decl ) override final { return decl->is_generator(); } |
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245 | |
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246 | static void implement( std::list< Declaration * > & translationUnit ) { |
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247 | PassVisitor< GeneratorKeyword > impl; |
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248 | mutateAll( translationUnit, impl ); |
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249 | } |
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250 | }; |
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251 | |
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252 | |
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253 | //----------------------------------------------------------------------------- |
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254 | class SuspendKeyword final : public WithStmtsToAdd, public WithGuards { |
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255 | public: |
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256 | SuspendKeyword() = default; |
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257 | virtual ~SuspendKeyword() = default; |
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258 | |
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259 | void premutate( FunctionDecl * ); |
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260 | DeclarationWithType * postmutate( FunctionDecl * ); |
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261 | |
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262 | Statement * postmutate( SuspendStmt * ); |
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263 | |
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264 | static void implement( std::list< Declaration * > & translationUnit ) { |
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265 | PassVisitor< SuspendKeyword > impl; |
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266 | mutateAll( translationUnit, impl ); |
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267 | } |
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268 | |
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269 | private: |
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270 | bool is_real_suspend( FunctionDecl * ); |
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271 | |
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272 | Statement * make_generator_suspend( SuspendStmt * ); |
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273 | Statement * make_coroutine_suspend( SuspendStmt * ); |
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274 | |
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275 | struct LabelPair { |
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276 | Label obj; |
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277 | int idx; |
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278 | }; |
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279 | |
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280 | LabelPair make_label() { |
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281 | labels.push_back( gen.newLabel("generator") ); |
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282 | return { labels.back(), int(labels.size()) }; |
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283 | } |
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284 | |
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285 | DeclarationWithType * in_generator = nullptr; |
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286 | FunctionDecl * decl_suspend = nullptr; |
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287 | std::vector<Label> labels; |
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288 | ControlStruct::LabelGenerator & gen = *ControlStruct::LabelGenerator::getGenerator(); |
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289 | }; |
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290 | |
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291 | //----------------------------------------------------------------------------- |
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292 | //Handles mutex routines definitions : |
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293 | // void foo( A * mutex a, B * mutex b, int i ) { void foo( A * a, B * b, int i ) { |
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294 | // $monitor * __monitors[] = { get_monitor(a), get_monitor(b) }; |
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295 | // monitor_guard_t __guard = { __monitors, 2 }; |
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296 | // /*Some code*/ => /*Some code*/ |
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297 | // } } |
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298 | // |
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299 | class MutexKeyword final { |
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300 | public: |
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301 | |
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302 | void postvisit( FunctionDecl * decl ); |
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303 | void postvisit( StructDecl * decl ); |
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304 | |
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305 | std::list<DeclarationWithType*> findMutexArgs( FunctionDecl*, bool & first ); |
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306 | void validate( DeclarationWithType * ); |
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307 | void addDtorStatements( FunctionDecl* func, CompoundStmt *, const std::list<DeclarationWithType * > &); |
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308 | void addStatements( FunctionDecl* func, CompoundStmt *, const std::list<DeclarationWithType * > &); |
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309 | void addThreadDtorStatements( FunctionDecl* func, CompoundStmt * body, const std::list<DeclarationWithType * > & args ); |
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310 | |
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311 | static void implement( std::list< Declaration * > & translationUnit ) { |
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312 | PassVisitor< MutexKeyword > impl; |
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313 | acceptAll( translationUnit, impl ); |
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314 | } |
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315 | |
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316 | private: |
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317 | StructDecl* monitor_decl = nullptr; |
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318 | StructDecl* guard_decl = nullptr; |
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319 | StructDecl* dtor_guard_decl = nullptr; |
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320 | StructDecl* thread_guard_decl = nullptr; |
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321 | |
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322 | static std::unique_ptr< Type > generic_func; |
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323 | }; |
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324 | |
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325 | std::unique_ptr< Type > MutexKeyword::generic_func = std::unique_ptr< Type >( |
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326 | new FunctionType( |
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327 | noQualifiers, |
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328 | true |
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329 | ) |
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330 | ); |
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331 | |
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332 | //----------------------------------------------------------------------------- |
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333 | //Handles mutex routines definitions : |
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334 | // void foo( A * mutex a, B * mutex b, int i ) { void foo( A * a, B * b, int i ) { |
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335 | // $monitor * __monitors[] = { get_monitor(a), get_monitor(b) }; |
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336 | // monitor_guard_t __guard = { __monitors, 2 }; |
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337 | // /*Some code*/ => /*Some code*/ |
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338 | // } } |
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339 | // |
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340 | class ThreadStarter final { |
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341 | public: |
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342 | |
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343 | void postvisit( FunctionDecl * decl ); |
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344 | void previsit ( StructDecl * decl ); |
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345 | |
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346 | void addStartStatement( FunctionDecl * decl, DeclarationWithType * param ); |
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347 | |
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348 | static void implement( std::list< Declaration * > & translationUnit ) { |
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349 | PassVisitor< ThreadStarter > impl; |
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350 | acceptAll( translationUnit, impl ); |
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351 | } |
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352 | |
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353 | private : |
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354 | bool thread_ctor_seen = false; |
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355 | StructDecl * thread_decl = nullptr; |
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356 | }; |
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357 | |
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358 | //============================================================================================= |
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359 | // General entry routine |
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360 | //============================================================================================= |
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361 | void applyKeywords( std::list< Declaration * > & translationUnit ) { |
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362 | ThreadKeyword ::implement( translationUnit ); |
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363 | CoroutineKeyword ::implement( translationUnit ); |
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364 | MonitorKeyword ::implement( translationUnit ); |
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365 | GeneratorKeyword ::implement( translationUnit ); |
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366 | SuspendKeyword ::implement( translationUnit ); |
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367 | } |
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368 | |
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369 | void implementMutexFuncs( std::list< Declaration * > & translationUnit ) { |
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370 | MutexKeyword ::implement( translationUnit ); |
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371 | } |
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372 | |
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373 | void implementThreadStarter( std::list< Declaration * > & translationUnit ) { |
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374 | ThreadStarter ::implement( translationUnit ); |
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375 | } |
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376 | |
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377 | //============================================================================================= |
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378 | // Generic keyword implementation |
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379 | //============================================================================================= |
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380 | void fixupGenerics(FunctionType * func, StructDecl * decl) { |
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381 | cloneAll(decl->parameters, func->forall); |
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382 | for ( TypeDecl * td : func->forall ) { |
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383 | strict_dynamic_cast<StructInstType*>( |
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384 | func->parameters.front()->get_type()->stripReferences() |
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385 | )->parameters.push_back( |
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386 | new TypeExpr( new TypeInstType( noQualifiers, td->name, td ) ) |
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387 | ); |
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388 | } |
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389 | } |
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390 | |
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391 | Declaration * ConcurrentSueKeyword::postmutate(StructDecl * decl) { |
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392 | if( decl->name == type_name && decl->body ) { |
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393 | assert( !type_decl ); |
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394 | type_decl = decl; |
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395 | } |
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396 | else if ( is_target(decl) ) { |
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397 | handle( decl ); |
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398 | } |
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399 | else if ( !except_decl && exception_name == decl->name && decl->body ) { |
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400 | except_decl = decl; |
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401 | } |
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402 | else if ( !typeid_decl && typeid_name == decl->name && decl->body ) { |
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403 | typeid_decl = decl; |
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404 | } |
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405 | else if ( !vtable_decl && vtable_name == decl->name && decl->body ) { |
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406 | vtable_decl = decl; |
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407 | } |
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408 | // Might be able to get ride of is target. |
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409 | assert( is_target(decl) == (cast_target == decl->kind) ); |
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410 | return decl; |
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411 | } |
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412 | |
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413 | DeclarationWithType * ConcurrentSueKeyword::postmutate( FunctionDecl * decl ) { |
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414 | if ( type_decl && isDestructorFor( decl, type_decl ) ) |
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415 | dtor_decl = decl; |
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416 | else if ( vtable_name.empty() || !decl->has_body() ) |
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417 | ; |
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418 | else if ( auto param = isMainFor( decl, cast_target ) ) { |
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419 | // This should never trigger. |
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420 | assert( vtable_decl ); |
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421 | // Should be safe because of isMainFor. |
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422 | StructInstType * struct_type = static_cast<StructInstType *>( |
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423 | static_cast<ReferenceType *>( param->get_type() )->base ); |
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424 | assert( struct_type ); |
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425 | |
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426 | std::list< Expression * > poly_args = { new TypeExpr( struct_type->clone() ) }; |
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427 | ObjectDecl * vtable_object = Virtual::makeVtableInstance( |
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428 | "_default_vtable_object_declaration", |
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429 | vtable_decl->makeInst( poly_args ), struct_type, nullptr ); |
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430 | declsToAddAfter.push_back( vtable_object ); |
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431 | declsToAddAfter.push_back( |
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432 | new ObjectDecl( |
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433 | Virtual::concurrentDefaultVTableName(), |
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434 | noStorageClasses, |
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435 | LinkageSpec::Cforall, |
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436 | /* bitfieldWidth */ nullptr, |
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437 | new ReferenceType( Type::Const, vtable_object->type->clone() ), |
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438 | new SingleInit( new VariableExpr( vtable_object ) ) |
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439 | ) |
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440 | ); |
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441 | declsToAddAfter.push_back( Virtual::makeGetExceptionFunction( |
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442 | vtable_object, except_decl->makeInst( std::move( poly_args ) ) |
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443 | ) ); |
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444 | } |
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445 | |
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446 | return decl; |
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447 | } |
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448 | |
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449 | Expression * ConcurrentSueKeyword::postmutate( KeywordCastExpr * cast ) { |
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450 | if ( cast_target == cast->target ) { |
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451 | // convert (thread &)t to ($thread &)*get_thread(t), etc. |
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452 | if( !type_decl ) SemanticError( cast, context_error ); |
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453 | if( !dtor_decl ) SemanticError( cast, context_error ); |
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454 | assert( cast->result == nullptr ); |
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455 | cast->set_result( new ReferenceType( noQualifiers, new StructInstType( noQualifiers, type_decl ) ) ); |
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456 | cast->concrete_target.field = field_name; |
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457 | cast->concrete_target.getter = getter_name; |
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458 | } |
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459 | return cast; |
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460 | } |
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461 | |
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462 | |
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463 | void ConcurrentSueKeyword::handle( StructDecl * decl ) { |
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464 | if( ! decl->body ) return; |
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465 | |
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466 | if( !type_decl ) SemanticError( decl, context_error ); |
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467 | if( !dtor_decl ) SemanticError( decl, context_error ); |
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468 | |
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469 | if ( !exception_name.empty() ) { |
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470 | if( !typeid_decl ) SemanticError( decl, context_error ); |
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471 | if( !vtable_decl ) SemanticError( decl, context_error ); |
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472 | |
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473 | addTypeId( decl ); |
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474 | addVtableForward( decl ); |
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475 | } |
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476 | FunctionDecl * func = forwardDeclare( decl ); |
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477 | ObjectDecl * field = addField( decl ); |
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478 | addRoutines( field, func ); |
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479 | } |
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480 | |
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481 | void ConcurrentSueKeyword::addTypeId( StructDecl * decl ) { |
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482 | assert( typeid_decl ); |
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483 | StructInstType typeid_type( Type::Const, typeid_decl ); |
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484 | typeid_type.parameters.push_back( new TypeExpr( |
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485 | new StructInstType( noQualifiers, decl ) |
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486 | ) ); |
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487 | declsToAddBefore.push_back( Virtual::makeTypeIdInstance( &typeid_type ) ); |
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488 | } |
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489 | |
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490 | void ConcurrentSueKeyword::addVtableForward( StructDecl * decl ) { |
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491 | assert( vtable_decl ); |
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492 | std::list< Expression * > poly_args = { |
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493 | new TypeExpr( new StructInstType( noQualifiers, decl ) ), |
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494 | }; |
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495 | declsToAddBefore.push_back( Virtual::makeGetExceptionForward( |
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496 | vtable_decl->makeInst( poly_args ), |
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497 | except_decl->makeInst( poly_args ) |
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498 | ) ); |
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499 | ObjectDecl * vtable_object = Virtual::makeVtableForward( |
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500 | "_default_vtable_object_declaration", |
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501 | vtable_decl->makeInst( move( poly_args ) ) ); |
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502 | declsToAddBefore.push_back( vtable_object ); |
---|
503 | declsToAddBefore.push_back( |
---|
504 | new ObjectDecl( |
---|
505 | Virtual::concurrentDefaultVTableName(), |
---|
506 | Type::StorageClasses( Type::Extern ), |
---|
507 | LinkageSpec::Cforall, |
---|
508 | /* bitfieldWidth */ nullptr, |
---|
509 | new ReferenceType( Type::Const, vtable_object->type->clone() ), |
---|
510 | /* init */ nullptr |
---|
511 | ) |
---|
512 | ); |
---|
513 | } |
---|
514 | |
---|
515 | FunctionDecl * ConcurrentSueKeyword::forwardDeclare( StructDecl * decl ) { |
---|
516 | |
---|
517 | StructDecl * forward = decl->clone(); |
---|
518 | forward->set_body( false ); |
---|
519 | deleteAll( forward->get_members() ); |
---|
520 | forward->get_members().clear(); |
---|
521 | |
---|
522 | FunctionType * get_type = new FunctionType( noQualifiers, false ); |
---|
523 | ObjectDecl * this_decl = new ObjectDecl( |
---|
524 | "this", |
---|
525 | noStorageClasses, |
---|
526 | LinkageSpec::Cforall, |
---|
527 | nullptr, |
---|
528 | new ReferenceType( |
---|
529 | noQualifiers, |
---|
530 | new StructInstType( |
---|
531 | noQualifiers, |
---|
532 | decl |
---|
533 | ) |
---|
534 | ), |
---|
535 | nullptr |
---|
536 | ); |
---|
537 | |
---|
538 | get_type->get_parameters().push_back( this_decl->clone() ); |
---|
539 | get_type->get_returnVals().push_back( |
---|
540 | new ObjectDecl( |
---|
541 | "ret", |
---|
542 | noStorageClasses, |
---|
543 | LinkageSpec::Cforall, |
---|
544 | nullptr, |
---|
545 | new PointerType( |
---|
546 | noQualifiers, |
---|
547 | new StructInstType( |
---|
548 | noQualifiers, |
---|
549 | type_decl |
---|
550 | ) |
---|
551 | ), |
---|
552 | nullptr |
---|
553 | ) |
---|
554 | ); |
---|
555 | fixupGenerics(get_type, decl); |
---|
556 | |
---|
557 | FunctionDecl * get_decl = new FunctionDecl( |
---|
558 | getter_name, |
---|
559 | Type::Static, |
---|
560 | LinkageSpec::Cforall, |
---|
561 | get_type, |
---|
562 | nullptr, |
---|
563 | { new Attribute("const") }, |
---|
564 | Type::Inline |
---|
565 | ); |
---|
566 | |
---|
567 | FunctionDecl * main_decl = nullptr; |
---|
568 | |
---|
569 | if( needs_main ) { |
---|
570 | FunctionType * main_type = new FunctionType( noQualifiers, false ); |
---|
571 | |
---|
572 | main_type->get_parameters().push_back( this_decl->clone() ); |
---|
573 | |
---|
574 | main_decl = new FunctionDecl( |
---|
575 | "main", |
---|
576 | noStorageClasses, |
---|
577 | LinkageSpec::Cforall, |
---|
578 | main_type, |
---|
579 | nullptr |
---|
580 | ); |
---|
581 | fixupGenerics(main_type, decl); |
---|
582 | } |
---|
583 | |
---|
584 | delete this_decl; |
---|
585 | |
---|
586 | declsToAddBefore.push_back( forward ); |
---|
587 | if( needs_main ) declsToAddBefore.push_back( main_decl ); |
---|
588 | declsToAddBefore.push_back( get_decl ); |
---|
589 | |
---|
590 | return get_decl; |
---|
591 | } |
---|
592 | |
---|
593 | ObjectDecl * ConcurrentSueKeyword::addField( StructDecl * decl ) { |
---|
594 | ObjectDecl * field = new ObjectDecl( |
---|
595 | field_name, |
---|
596 | noStorageClasses, |
---|
597 | LinkageSpec::Cforall, |
---|
598 | nullptr, |
---|
599 | new StructInstType( |
---|
600 | noQualifiers, |
---|
601 | type_decl |
---|
602 | ), |
---|
603 | nullptr |
---|
604 | ); |
---|
605 | |
---|
606 | decl->get_members().push_back( field ); |
---|
607 | |
---|
608 | return field; |
---|
609 | } |
---|
610 | |
---|
611 | void ConcurrentSueKeyword::addRoutines( ObjectDecl * field, FunctionDecl * func ) { |
---|
612 | CompoundStmt * statement = new CompoundStmt(); |
---|
613 | statement->push_back( |
---|
614 | new ReturnStmt( |
---|
615 | new AddressExpr( |
---|
616 | new MemberExpr( |
---|
617 | field, |
---|
618 | new CastExpr( |
---|
619 | new VariableExpr( func->get_functionType()->get_parameters().front() ), |
---|
620 | func->get_functionType()->get_parameters().front()->get_type()->stripReferences()->clone(), |
---|
621 | false |
---|
622 | ) |
---|
623 | ) |
---|
624 | ) |
---|
625 | ) |
---|
626 | ); |
---|
627 | |
---|
628 | FunctionDecl * get_decl = func->clone(); |
---|
629 | |
---|
630 | get_decl->set_statements( statement ); |
---|
631 | |
---|
632 | declsToAddAfter.push_back( get_decl ); |
---|
633 | } |
---|
634 | |
---|
635 | //============================================================================================= |
---|
636 | // Suspend keyword implementation |
---|
637 | //============================================================================================= |
---|
638 | bool SuspendKeyword::is_real_suspend( FunctionDecl * func ) { |
---|
639 | if(isMangled(func->linkage)) return false; // the real suspend isn't mangled |
---|
640 | if(func->name != "__cfactx_suspend") return false; // the real suspend has a specific name |
---|
641 | if(func->type->parameters.size() != 0) return false; // Too many parameters |
---|
642 | if(func->type->returnVals.size() != 0) return false; // Too many return values |
---|
643 | |
---|
644 | return true; |
---|
645 | } |
---|
646 | |
---|
647 | void SuspendKeyword::premutate( FunctionDecl * func ) { |
---|
648 | GuardValue(in_generator); |
---|
649 | in_generator = nullptr; |
---|
650 | |
---|
651 | // Is this the real suspend? |
---|
652 | if(is_real_suspend(func)) { |
---|
653 | decl_suspend = decl_suspend ? decl_suspend : func; |
---|
654 | return; |
---|
655 | } |
---|
656 | |
---|
657 | // Is this the main of a generator? |
---|
658 | auto param = isMainFor( func, AggregateDecl::Aggregate::Generator ); |
---|
659 | if(!param) return; |
---|
660 | |
---|
661 | if(func->type->returnVals.size() != 0) SemanticError(func->location, "Generator main must return void"); |
---|
662 | |
---|
663 | in_generator = param; |
---|
664 | GuardValue(labels); |
---|
665 | labels.clear(); |
---|
666 | } |
---|
667 | |
---|
668 | DeclarationWithType * SuspendKeyword::postmutate( FunctionDecl * func ) { |
---|
669 | if( !func->statements ) return func; // Not the actual definition, don't do anything |
---|
670 | if( !in_generator ) return func; // Not in a generator, don't do anything |
---|
671 | if( labels.empty() ) return func; // Generator has no states, nothing to do, could throw a warning |
---|
672 | |
---|
673 | // This is a generator main, we need to add the following code to the top |
---|
674 | // static void * __generator_labels[] = {&&s0, &&s1, ...}; |
---|
675 | // goto * __generator_labels[gen.__generator_state]; |
---|
676 | const auto & loc = func->location; |
---|
677 | |
---|
678 | const auto first_label = gen.newLabel("generator"); |
---|
679 | |
---|
680 | // for each label add to declaration |
---|
681 | std::list<Initializer*> inits = { new SingleInit( new LabelAddressExpr( first_label ) ) }; |
---|
682 | for(const auto & label : labels) { |
---|
683 | inits.push_back( |
---|
684 | new SingleInit( |
---|
685 | new LabelAddressExpr( label ) |
---|
686 | ) |
---|
687 | ); |
---|
688 | } |
---|
689 | auto init = new ListInit(std::move(inits), noDesignators, true); |
---|
690 | labels.clear(); |
---|
691 | |
---|
692 | // create decl |
---|
693 | auto decl = new ObjectDecl( |
---|
694 | "__generator_labels", |
---|
695 | Type::StorageClasses( Type::Static ), |
---|
696 | LinkageSpec::AutoGen, |
---|
697 | nullptr, |
---|
698 | new ArrayType( |
---|
699 | Type::Qualifiers(), |
---|
700 | new PointerType( |
---|
701 | Type::Qualifiers(), |
---|
702 | new VoidType( Type::Qualifiers() ) |
---|
703 | ), |
---|
704 | nullptr, |
---|
705 | false, false |
---|
706 | ), |
---|
707 | init |
---|
708 | ); |
---|
709 | |
---|
710 | // create the goto |
---|
711 | assert(in_generator); |
---|
712 | |
---|
713 | auto go_decl = new ObjectDecl( |
---|
714 | "__generator_label", |
---|
715 | noStorageClasses, |
---|
716 | LinkageSpec::AutoGen, |
---|
717 | nullptr, |
---|
718 | new PointerType( |
---|
719 | Type::Qualifiers(), |
---|
720 | new VoidType( Type::Qualifiers() ) |
---|
721 | ), |
---|
722 | new SingleInit( |
---|
723 | new UntypedExpr( |
---|
724 | new NameExpr("?[?]"), |
---|
725 | { |
---|
726 | new NameExpr("__generator_labels"), |
---|
727 | new UntypedMemberExpr( |
---|
728 | new NameExpr("__generator_state"), |
---|
729 | new VariableExpr( in_generator ) |
---|
730 | ) |
---|
731 | } |
---|
732 | ) |
---|
733 | ) |
---|
734 | ); |
---|
735 | go_decl->location = loc; |
---|
736 | |
---|
737 | auto go = new BranchStmt( |
---|
738 | new VariableExpr( go_decl ), |
---|
739 | BranchStmt::Goto |
---|
740 | ); |
---|
741 | go->location = loc; |
---|
742 | go->computedTarget->location = loc; |
---|
743 | |
---|
744 | auto noop = new NullStmt({ first_label }); |
---|
745 | noop->location = loc; |
---|
746 | |
---|
747 | // wrap everything in a nice compound |
---|
748 | auto body = new CompoundStmt({ |
---|
749 | new DeclStmt( decl ), |
---|
750 | new DeclStmt( go_decl ), |
---|
751 | go, |
---|
752 | noop, |
---|
753 | func->statements |
---|
754 | }); |
---|
755 | body->location = loc; |
---|
756 | func->statements = body; |
---|
757 | |
---|
758 | return func; |
---|
759 | } |
---|
760 | |
---|
761 | Statement * SuspendKeyword::postmutate( SuspendStmt * stmt ) { |
---|
762 | SuspendStmt::Type type = stmt->type; |
---|
763 | if(type == SuspendStmt::None) { |
---|
764 | // This suspend has a implicit target, find it |
---|
765 | type = in_generator ? SuspendStmt::Generator : SuspendStmt::Coroutine; |
---|
766 | } |
---|
767 | |
---|
768 | // Check that the target makes sense |
---|
769 | if(!in_generator && type == SuspendStmt::Generator) SemanticError( stmt->location, "'suspend generator' must be used inside main of generator type."); |
---|
770 | |
---|
771 | // Act appropriately |
---|
772 | switch(type) { |
---|
773 | case SuspendStmt::Generator: return make_generator_suspend(stmt); |
---|
774 | case SuspendStmt::Coroutine: return make_coroutine_suspend(stmt); |
---|
775 | default: abort(); |
---|
776 | } |
---|
777 | } |
---|
778 | |
---|
779 | Statement * SuspendKeyword::make_generator_suspend( SuspendStmt * stmt ) { |
---|
780 | assert(in_generator); |
---|
781 | // Target code is : |
---|
782 | // gen.__generator_state = X; |
---|
783 | // { THEN } |
---|
784 | // return; |
---|
785 | // __gen_X:; |
---|
786 | |
---|
787 | // Save the location and delete the old statement, we only need the location from this point on |
---|
788 | auto loc = stmt->location; |
---|
789 | |
---|
790 | // Build the label and get its index |
---|
791 | auto label = make_label(); |
---|
792 | |
---|
793 | // Create the context saving statement |
---|
794 | auto save = new ExprStmt( new UntypedExpr( |
---|
795 | new NameExpr( "?=?" ), |
---|
796 | { |
---|
797 | new UntypedMemberExpr( |
---|
798 | new NameExpr("__generator_state"), |
---|
799 | new VariableExpr( in_generator ) |
---|
800 | ), |
---|
801 | new ConstantExpr( |
---|
802 | Constant::from_int( label.idx ) |
---|
803 | ) |
---|
804 | } |
---|
805 | )); |
---|
806 | assert(save->expr); |
---|
807 | save->location = loc; |
---|
808 | stmtsToAddBefore.push_back( save ); |
---|
809 | |
---|
810 | // if we have a then add it here |
---|
811 | auto then = stmt->then; |
---|
812 | stmt->then = nullptr; |
---|
813 | delete stmt; |
---|
814 | if(then) stmtsToAddBefore.push_back( then ); |
---|
815 | |
---|
816 | // Create the return statement |
---|
817 | auto ret = new ReturnStmt( nullptr ); |
---|
818 | ret->location = loc; |
---|
819 | stmtsToAddBefore.push_back( ret ); |
---|
820 | |
---|
821 | // Create the null statement with the created label |
---|
822 | auto noop = new NullStmt({ label.obj }); |
---|
823 | noop->location = loc; |
---|
824 | |
---|
825 | // Return the null statement to take the place of the previous statement |
---|
826 | return noop; |
---|
827 | } |
---|
828 | |
---|
829 | Statement * SuspendKeyword::make_coroutine_suspend( SuspendStmt * stmt ) { |
---|
830 | if(stmt->then) SemanticError( stmt->location, "Compound statement following coroutines is not implemented."); |
---|
831 | |
---|
832 | // Save the location and delete the old statement, we only need the location from this point on |
---|
833 | auto loc = stmt->location; |
---|
834 | delete stmt; |
---|
835 | |
---|
836 | // Create the call expression |
---|
837 | if(!decl_suspend) SemanticError( loc, "suspend keyword applied to coroutines requires coroutines to be in scope, add #include <coroutine.hfa>\n"); |
---|
838 | auto expr = new UntypedExpr( VariableExpr::functionPointer( decl_suspend ) ); |
---|
839 | expr->location = loc; |
---|
840 | |
---|
841 | // Change this statement into a regular expr |
---|
842 | assert(expr); |
---|
843 | auto nstmt = new ExprStmt( expr ); |
---|
844 | nstmt->location = loc; |
---|
845 | return nstmt; |
---|
846 | } |
---|
847 | |
---|
848 | |
---|
849 | //============================================================================================= |
---|
850 | // Mutex keyword implementation |
---|
851 | //============================================================================================= |
---|
852 | |
---|
853 | void MutexKeyword::postvisit(FunctionDecl* decl) { |
---|
854 | |
---|
855 | bool first = false; |
---|
856 | std::list<DeclarationWithType*> mutexArgs = findMutexArgs( decl, first ); |
---|
857 | bool const isDtor = CodeGen::isDestructor( decl->name ); |
---|
858 | |
---|
859 | // Is this function relevant to monitors |
---|
860 | if( mutexArgs.empty() ) { |
---|
861 | // If this is the destructor for a monitor it must be mutex |
---|
862 | if(isDtor) { |
---|
863 | Type* ty = decl->get_functionType()->get_parameters().front()->get_type(); |
---|
864 | |
---|
865 | // If it's a copy, it's not a mutex |
---|
866 | ReferenceType* rty = dynamic_cast< ReferenceType * >( ty ); |
---|
867 | if( ! rty ) return; |
---|
868 | |
---|
869 | // If we are not pointing directly to a type, it's not a mutex |
---|
870 | Type* base = rty->get_base(); |
---|
871 | if( dynamic_cast< ReferenceType * >( base ) ) return; |
---|
872 | if( dynamic_cast< PointerType * >( base ) ) return; |
---|
873 | |
---|
874 | // Check if its a struct |
---|
875 | StructInstType * baseStruct = dynamic_cast< StructInstType * >( base ); |
---|
876 | if( !baseStruct ) return; |
---|
877 | |
---|
878 | // Check if its a monitor |
---|
879 | if(baseStruct->baseStruct->is_monitor() || baseStruct->baseStruct->is_thread()) |
---|
880 | SemanticError( decl, "destructors for structures declared as \"monitor\" must use mutex parameters\n" ); |
---|
881 | } |
---|
882 | return; |
---|
883 | } |
---|
884 | |
---|
885 | // Monitors can't be constructed with mutual exclusion |
---|
886 | if( CodeGen::isConstructor(decl->name) && !first ) SemanticError( decl, "constructors cannot have mutex parameters" ); |
---|
887 | |
---|
888 | // It makes no sense to have multiple mutex parameters for the destructor |
---|
889 | if( isDtor && mutexArgs.size() != 1 ) SemanticError( decl, "destructors can only have 1 mutex argument" ); |
---|
890 | |
---|
891 | // Make sure all the mutex arguments are monitors |
---|
892 | for(auto arg : mutexArgs) { |
---|
893 | validate( arg ); |
---|
894 | } |
---|
895 | |
---|
896 | // Check if we need to instrument the body |
---|
897 | CompoundStmt* body = decl->get_statements(); |
---|
898 | if( ! body ) return; |
---|
899 | |
---|
900 | // Do we have the required headers |
---|
901 | if( !monitor_decl || !guard_decl || !dtor_guard_decl ) |
---|
902 | SemanticError( decl, "mutex keyword requires monitors to be in scope, add #include <monitor.hfa>\n" ); |
---|
903 | |
---|
904 | // Instrument the body |
---|
905 | if ( isDtor && isThread( mutexArgs.front() ) ) { |
---|
906 | if( !thread_guard_decl ) { |
---|
907 | SemanticError( decl, "thread destructor requires threads to be in scope, add #include <thread.hfa>\n" ); |
---|
908 | } |
---|
909 | addThreadDtorStatements( decl, body, mutexArgs ); |
---|
910 | } |
---|
911 | else if ( isDtor ) { |
---|
912 | addDtorStatements( decl, body, mutexArgs ); |
---|
913 | } |
---|
914 | else { |
---|
915 | addStatements( decl, body, mutexArgs ); |
---|
916 | } |
---|
917 | } |
---|
918 | |
---|
919 | void MutexKeyword::postvisit(StructDecl* decl) { |
---|
920 | |
---|
921 | if( decl->name == "$monitor" && decl->body ) { |
---|
922 | assert( !monitor_decl ); |
---|
923 | monitor_decl = decl; |
---|
924 | } |
---|
925 | else if( decl->name == "monitor_guard_t" && decl->body ) { |
---|
926 | assert( !guard_decl ); |
---|
927 | guard_decl = decl; |
---|
928 | } |
---|
929 | else if( decl->name == "monitor_dtor_guard_t" && decl->body ) { |
---|
930 | assert( !dtor_guard_decl ); |
---|
931 | dtor_guard_decl = decl; |
---|
932 | } |
---|
933 | else if( decl->name == "thread_dtor_guard_t" && decl->body ) { |
---|
934 | assert( !thread_guard_decl ); |
---|
935 | thread_guard_decl = decl; |
---|
936 | } |
---|
937 | } |
---|
938 | |
---|
939 | std::list<DeclarationWithType*> MutexKeyword::findMutexArgs( FunctionDecl* decl, bool & first ) { |
---|
940 | std::list<DeclarationWithType*> mutexArgs; |
---|
941 | |
---|
942 | bool once = true; |
---|
943 | for( auto arg : decl->get_functionType()->get_parameters()) { |
---|
944 | //Find mutex arguments |
---|
945 | Type* ty = arg->get_type(); |
---|
946 | if( ! ty->get_mutex() ) continue; |
---|
947 | |
---|
948 | if(once) {first = true;} |
---|
949 | once = false; |
---|
950 | |
---|
951 | //Append it to the list |
---|
952 | mutexArgs.push_back( arg ); |
---|
953 | } |
---|
954 | |
---|
955 | return mutexArgs; |
---|
956 | } |
---|
957 | |
---|
958 | void MutexKeyword::validate( DeclarationWithType * arg ) { |
---|
959 | Type* ty = arg->get_type(); |
---|
960 | |
---|
961 | //Makes sure it's not a copy |
---|
962 | ReferenceType* rty = dynamic_cast< ReferenceType * >( ty ); |
---|
963 | if( ! rty ) SemanticError( arg, "Mutex argument must be of reference type " ); |
---|
964 | |
---|
965 | //Make sure the we are pointing directly to a type |
---|
966 | Type* base = rty->get_base(); |
---|
967 | if( dynamic_cast< ReferenceType * >( base ) ) SemanticError( arg, "Mutex argument have exactly one level of indirection " ); |
---|
968 | if( dynamic_cast< PointerType * >( base ) ) SemanticError( arg, "Mutex argument have exactly one level of indirection " ); |
---|
969 | |
---|
970 | //Make sure that typed isn't mutex |
---|
971 | if( base->get_mutex() ) SemanticError( arg, "mutex keyword may only appear once per argument " ); |
---|
972 | } |
---|
973 | |
---|
974 | void MutexKeyword::addDtorStatements( FunctionDecl* func, CompoundStmt * body, const std::list<DeclarationWithType * > & args ) { |
---|
975 | Type * arg_type = args.front()->get_type()->clone(); |
---|
976 | arg_type->set_mutex( false ); |
---|
977 | |
---|
978 | ObjectDecl * monitors = new ObjectDecl( |
---|
979 | "__monitor", |
---|
980 | noStorageClasses, |
---|
981 | LinkageSpec::Cforall, |
---|
982 | nullptr, |
---|
983 | new PointerType( |
---|
984 | noQualifiers, |
---|
985 | new StructInstType( |
---|
986 | noQualifiers, |
---|
987 | monitor_decl |
---|
988 | ) |
---|
989 | ), |
---|
990 | new SingleInit( new UntypedExpr( |
---|
991 | new NameExpr( "get_monitor" ), |
---|
992 | { new CastExpr( new VariableExpr( args.front() ), arg_type, false ) } |
---|
993 | )) |
---|
994 | ); |
---|
995 | |
---|
996 | assert(generic_func); |
---|
997 | |
---|
998 | //in reverse order : |
---|
999 | // monitor_dtor_guard_t __guard = { __monitors, func }; |
---|
1000 | body->push_front( |
---|
1001 | new DeclStmt( new ObjectDecl( |
---|
1002 | "__guard", |
---|
1003 | noStorageClasses, |
---|
1004 | LinkageSpec::Cforall, |
---|
1005 | nullptr, |
---|
1006 | new StructInstType( |
---|
1007 | noQualifiers, |
---|
1008 | dtor_guard_decl |
---|
1009 | ), |
---|
1010 | new ListInit( |
---|
1011 | { |
---|
1012 | new SingleInit( new AddressExpr( new VariableExpr( monitors ) ) ), |
---|
1013 | new SingleInit( new CastExpr( new VariableExpr( func ), generic_func->clone(), false ) ), |
---|
1014 | new SingleInit( new ConstantExpr( Constant::from_bool( false ) ) ) |
---|
1015 | }, |
---|
1016 | noDesignators, |
---|
1017 | true |
---|
1018 | ) |
---|
1019 | )) |
---|
1020 | ); |
---|
1021 | |
---|
1022 | //$monitor * __monitors[] = { get_monitor(a), get_monitor(b) }; |
---|
1023 | body->push_front( new DeclStmt( monitors ) ); |
---|
1024 | } |
---|
1025 | |
---|
1026 | void MutexKeyword::addThreadDtorStatements( |
---|
1027 | FunctionDecl*, CompoundStmt * body, |
---|
1028 | const std::list<DeclarationWithType * > & args ) { |
---|
1029 | assert( args.size() == 1 ); |
---|
1030 | DeclarationWithType * arg = args.front(); |
---|
1031 | Type * arg_type = arg->get_type()->clone(); |
---|
1032 | assert( arg_type->get_mutex() ); |
---|
1033 | arg_type->set_mutex( false ); |
---|
1034 | |
---|
1035 | // thread_dtor_guard_t __guard = { this, intptr( 0 ) }; |
---|
1036 | body->push_front( |
---|
1037 | new DeclStmt( new ObjectDecl( |
---|
1038 | "__guard", |
---|
1039 | noStorageClasses, |
---|
1040 | LinkageSpec::Cforall, |
---|
1041 | nullptr, |
---|
1042 | new StructInstType( |
---|
1043 | noQualifiers, |
---|
1044 | thread_guard_decl |
---|
1045 | ), |
---|
1046 | new ListInit( |
---|
1047 | { |
---|
1048 | new SingleInit( new CastExpr( new VariableExpr( arg ), arg_type ) ), |
---|
1049 | new SingleInit( new UntypedExpr( |
---|
1050 | new NameExpr( "intptr" ), { |
---|
1051 | new ConstantExpr( Constant::from_int( 0 ) ), |
---|
1052 | } |
---|
1053 | ) ), |
---|
1054 | }, |
---|
1055 | noDesignators, |
---|
1056 | true |
---|
1057 | ) |
---|
1058 | )) |
---|
1059 | ); |
---|
1060 | } |
---|
1061 | |
---|
1062 | void MutexKeyword::addStatements( FunctionDecl* func, CompoundStmt * body, const std::list<DeclarationWithType * > & args ) { |
---|
1063 | ObjectDecl * monitors = new ObjectDecl( |
---|
1064 | "__monitors", |
---|
1065 | noStorageClasses, |
---|
1066 | LinkageSpec::Cforall, |
---|
1067 | nullptr, |
---|
1068 | new ArrayType( |
---|
1069 | noQualifiers, |
---|
1070 | new PointerType( |
---|
1071 | noQualifiers, |
---|
1072 | new StructInstType( |
---|
1073 | noQualifiers, |
---|
1074 | monitor_decl |
---|
1075 | ) |
---|
1076 | ), |
---|
1077 | new ConstantExpr( Constant::from_ulong( args.size() ) ), |
---|
1078 | false, |
---|
1079 | false |
---|
1080 | ), |
---|
1081 | new ListInit( |
---|
1082 | map_range < std::list<Initializer*> > ( args, [](DeclarationWithType * var ){ |
---|
1083 | Type * type = var->get_type()->clone(); |
---|
1084 | type->set_mutex( false ); |
---|
1085 | return new SingleInit( new UntypedExpr( |
---|
1086 | new NameExpr( "get_monitor" ), |
---|
1087 | { new CastExpr( new VariableExpr( var ), type, false ) } |
---|
1088 | ) ); |
---|
1089 | }) |
---|
1090 | ) |
---|
1091 | ); |
---|
1092 | |
---|
1093 | assert(generic_func); |
---|
1094 | |
---|
1095 | // in reverse order : |
---|
1096 | // monitor_guard_t __guard = { __monitors, #, func }; |
---|
1097 | body->push_front( |
---|
1098 | new DeclStmt( new ObjectDecl( |
---|
1099 | "__guard", |
---|
1100 | noStorageClasses, |
---|
1101 | LinkageSpec::Cforall, |
---|
1102 | nullptr, |
---|
1103 | new StructInstType( |
---|
1104 | noQualifiers, |
---|
1105 | guard_decl |
---|
1106 | ), |
---|
1107 | new ListInit( |
---|
1108 | { |
---|
1109 | new SingleInit( new VariableExpr( monitors ) ), |
---|
1110 | new SingleInit( new ConstantExpr( Constant::from_ulong( args.size() ) ) ), |
---|
1111 | new SingleInit( new CastExpr( new VariableExpr( func ), generic_func->clone(), false ) ) |
---|
1112 | }, |
---|
1113 | noDesignators, |
---|
1114 | true |
---|
1115 | ) |
---|
1116 | )) |
---|
1117 | ); |
---|
1118 | |
---|
1119 | //$monitor * __monitors[] = { get_monitor(a), get_monitor(b) }; |
---|
1120 | body->push_front( new DeclStmt( monitors) ); |
---|
1121 | } |
---|
1122 | |
---|
1123 | //============================================================================================= |
---|
1124 | // General entry routine |
---|
1125 | //============================================================================================= |
---|
1126 | void ThreadStarter::previsit( StructDecl * decl ) { |
---|
1127 | if( decl->name == "$thread" && decl->body ) { |
---|
1128 | assert( !thread_decl ); |
---|
1129 | thread_decl = decl; |
---|
1130 | } |
---|
1131 | } |
---|
1132 | |
---|
1133 | void ThreadStarter::postvisit(FunctionDecl * decl) { |
---|
1134 | if( ! CodeGen::isConstructor(decl->name) ) return; |
---|
1135 | |
---|
1136 | Type * typeof_this = InitTweak::getTypeofThis(decl->type); |
---|
1137 | StructInstType * ctored_type = dynamic_cast< StructInstType * >( typeof_this ); |
---|
1138 | if( ctored_type && ctored_type->baseStruct == thread_decl ) { |
---|
1139 | thread_ctor_seen = true; |
---|
1140 | } |
---|
1141 | |
---|
1142 | DeclarationWithType * param = decl->get_functionType()->get_parameters().front(); |
---|
1143 | auto type = dynamic_cast< StructInstType * >( InitTweak::getPointerBase( param->get_type() ) ); |
---|
1144 | if( type && type->get_baseStruct()->is_thread() ) { |
---|
1145 | if( !thread_decl || !thread_ctor_seen ) { |
---|
1146 | SemanticError( type->get_baseStruct()->location, "thread keyword requires threads to be in scope, add #include <thread.hfa>"); |
---|
1147 | } |
---|
1148 | |
---|
1149 | addStartStatement( decl, param ); |
---|
1150 | } |
---|
1151 | } |
---|
1152 | |
---|
1153 | void ThreadStarter::addStartStatement( FunctionDecl * decl, DeclarationWithType * param ) { |
---|
1154 | CompoundStmt * stmt = decl->get_statements(); |
---|
1155 | |
---|
1156 | if( ! stmt ) return; |
---|
1157 | |
---|
1158 | stmt->push_back( |
---|
1159 | new ExprStmt( |
---|
1160 | new UntypedExpr( |
---|
1161 | new NameExpr( "__thrd_start" ), |
---|
1162 | { new VariableExpr( param ), new NameExpr("main") } |
---|
1163 | ) |
---|
1164 | ) |
---|
1165 | ); |
---|
1166 | } |
---|
1167 | }; |
---|
1168 | |
---|
1169 | // Local Variables: // |
---|
1170 | // mode: c // |
---|
1171 | // tab-width: 4 // |
---|
1172 | // End: // |
---|
1173 | |
---|