1 | // -*- Mode: CPP -*- |
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2 | // |
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3 | // Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo |
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4 | // |
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5 | // The contents of this file are covered under the licence agreement in the |
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6 | // file "LICENCE" distributed with Cforall. |
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7 | // |
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8 | // Keywords.cc -- |
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9 | // |
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10 | // Author : Thierry Delisle |
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11 | // Created On : Mon Mar 13 12:41:22 2017 |
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12 | // Last Modified By : |
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13 | // Last Modified On : |
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14 | // Update Count : 3 |
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15 | // |
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16 | |
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17 | #include "Concurrency/Keywords.h" |
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18 | |
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19 | #include "SymTab/AddVisit.h" |
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20 | #include "SynTree/Declaration.h" |
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21 | #include "SynTree/Expression.h" |
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22 | #include "SynTree/Initializer.h" |
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23 | #include "SynTree/Statement.h" |
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24 | #include "SynTree/Type.h" |
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25 | #include "SynTree/Visitor.h" |
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26 | |
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27 | namespace Concurrency { |
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28 | |
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29 | namespace { |
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30 | const std::list<Label> noLabels; |
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31 | const std::list< Attribute * > noAttributes; |
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32 | Type::StorageClasses noStorage; |
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33 | Type::Qualifiers noQualifiers; |
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34 | } |
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35 | |
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36 | //============================================================================================= |
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37 | // Visitors declaration |
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38 | //============================================================================================= |
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39 | |
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40 | //----------------------------------------------------------------------------- |
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41 | //Handles sue type declarations : |
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42 | // sue MyType { struct MyType { |
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43 | // int data; int data; |
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44 | // a_struct_t more_data; a_struct_t more_data; |
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45 | // => NewField_t newField; |
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46 | // }; }; |
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47 | // static inline NewField_t * getter_name( MyType * this ) { return &this->newField; } |
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48 | // |
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49 | class ConcurrentSueKeyword : public Visitor { |
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50 | protected: |
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51 | template< typename Visitor > |
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52 | friend void SymTab::acceptAndAdd( std::list< Declaration * > &translationUnit, Visitor &visitor ); |
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53 | public: |
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54 | |
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55 | ConcurrentSueKeyword( std::string&& type_name, std::string&& field_name, std::string&& getter_name, std::string&& context_error ) : |
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56 | type_name( type_name ), field_name( field_name ), getter_name( getter_name ), context_error( context_error ) {} |
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57 | |
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58 | virtual ~ConcurrentSueKeyword() {} |
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59 | |
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60 | using Visitor::visit; |
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61 | virtual void visit( StructDecl * decl ) override final; |
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62 | |
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63 | void handle( StructDecl * ); |
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64 | FunctionDecl * forwardDeclare( StructDecl * ); |
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65 | ObjectDecl * addField( StructDecl * ); |
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66 | void addRoutines( StructDecl *, ObjectDecl *, FunctionDecl * ); |
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67 | |
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68 | virtual bool is_target( StructDecl * decl ) = 0; |
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69 | |
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70 | private: |
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71 | const std::string type_name; |
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72 | const std::string field_name; |
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73 | const std::string getter_name; |
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74 | const std::string context_error; |
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75 | |
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76 | std::list< Declaration * > declsToAdd, declsToAddAfter; |
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77 | StructDecl* type_decl = nullptr; |
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78 | }; |
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79 | |
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80 | |
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81 | //----------------------------------------------------------------------------- |
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82 | //Handles thread type declarations : |
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83 | // thread Mythread { struct MyThread { |
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84 | // int data; int data; |
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85 | // a_struct_t more_data; a_struct_t more_data; |
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86 | // => thread_desc __thrd_d; |
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87 | // }; }; |
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88 | // static inline thread_desc * get_thread( MyThread * this ) { return &this->__thrd_d; } |
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89 | // |
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90 | class ThreadKeyword final : public ConcurrentSueKeyword { |
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91 | public: |
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92 | |
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93 | ThreadKeyword() : ConcurrentSueKeyword( |
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94 | "thread_desc", |
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95 | "__thrd", |
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96 | "get_thread", |
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97 | "thread keyword requires threads to be in scope, add #include <thread>" |
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98 | ) |
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99 | {} |
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100 | |
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101 | virtual ~ThreadKeyword() {} |
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102 | |
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103 | virtual bool is_target( StructDecl * decl ) override final { return decl->is_thread(); } |
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104 | |
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105 | static void implement( std::list< Declaration * > & translationUnit ) { |
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106 | ThreadKeyword impl; |
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107 | SymTab::acceptAndAdd( translationUnit, impl ); |
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108 | } |
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109 | }; |
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110 | |
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111 | //----------------------------------------------------------------------------- |
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112 | //Handles coroutine type declarations : |
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113 | // coroutine MyCoroutine { struct MyCoroutine { |
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114 | // int data; int data; |
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115 | // a_struct_t more_data; a_struct_t more_data; |
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116 | // => coroutine_desc __cor_d; |
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117 | // }; }; |
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118 | // static inline coroutine_desc * get_coroutine( MyCoroutine * this ) { return &this->__cor_d; } |
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119 | // |
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120 | class CoroutineKeyword final : public ConcurrentSueKeyword { |
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121 | public: |
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122 | |
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123 | CoroutineKeyword() : ConcurrentSueKeyword( |
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124 | "coroutine_desc", |
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125 | "__cor", |
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126 | "get_coroutine", |
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127 | "coroutine keyword requires coroutines to be in scope, add #include <coroutine>" |
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128 | ) |
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129 | {} |
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130 | |
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131 | virtual ~CoroutineKeyword() {} |
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132 | |
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133 | virtual bool is_target( StructDecl * decl ) override final { return decl->is_coroutine(); } |
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134 | |
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135 | static void implement( std::list< Declaration * > & translationUnit ) { |
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136 | CoroutineKeyword impl; |
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137 | SymTab::acceptAndAdd( translationUnit, impl ); |
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138 | } |
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139 | }; |
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140 | |
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141 | //----------------------------------------------------------------------------- |
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142 | //Handles monitor type declarations : |
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143 | // monitor MyMonitor { struct MyMonitor { |
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144 | // int data; int data; |
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145 | // a_struct_t more_data; a_struct_t more_data; |
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146 | // => monitor_desc __mon_d; |
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147 | // }; }; |
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148 | // static inline monitor_desc * get_coroutine( MyMonitor * this ) { return &this->__cor_d; } |
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149 | // |
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150 | class MonitorKeyword final : public ConcurrentSueKeyword { |
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151 | public: |
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152 | |
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153 | MonitorKeyword() : ConcurrentSueKeyword( |
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154 | "monitor_desc", |
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155 | "__mon", |
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156 | "get_monitor", |
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157 | "monitor keyword requires monitors to be in scope, add #include <monitor>" |
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158 | ) |
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159 | {} |
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160 | |
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161 | virtual ~MonitorKeyword() {} |
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162 | |
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163 | virtual bool is_target( StructDecl * decl ) override final { return decl->is_monitor(); } |
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164 | |
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165 | static void implement( std::list< Declaration * > & translationUnit ) { |
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166 | MonitorKeyword impl; |
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167 | SymTab::acceptAndAdd( translationUnit, impl ); |
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168 | } |
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169 | }; |
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170 | |
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171 | //----------------------------------------------------------------------------- |
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172 | //Handles mutex routines definitions : |
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173 | // void foo( A * mutex a, B * mutex b, int i ) { void foo( A * a, B * b, int i ) { |
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174 | // monitor_desc * __monitors[] = { get_monitor(a), get_monitor(b) }; |
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175 | // monitor_guard_t __guard = { __monitors, 2 }; |
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176 | // /*Some code*/ => /*Some code*/ |
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177 | // } } |
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178 | // |
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179 | class MutexKeyword final : public Visitor { |
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180 | public: |
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181 | |
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182 | using Visitor::visit; |
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183 | virtual void visit( FunctionDecl * decl ) override final; |
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184 | virtual void visit( StructDecl * decl ) override final; |
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185 | |
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186 | std::list<DeclarationWithType*> findMutexArgs( FunctionDecl* ); |
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187 | void validate( DeclarationWithType * ); |
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188 | void addStatments( CompoundStmt *, const std::list<DeclarationWithType * > &); |
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189 | |
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190 | static void implement( std::list< Declaration * > & translationUnit ) { |
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191 | MutexKeyword impl; |
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192 | acceptAll( translationUnit, impl ); |
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193 | } |
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194 | |
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195 | private: |
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196 | StructDecl* monitor_decl = nullptr; |
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197 | StructDecl* guard_decl = nullptr; |
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198 | }; |
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199 | |
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200 | //============================================================================================= |
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201 | // General entry routine |
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202 | //============================================================================================= |
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203 | void applyKeywords( std::list< Declaration * > & translationUnit ) { |
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204 | ThreadKeyword ::implement( translationUnit ); |
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205 | CoroutineKeyword ::implement( translationUnit ); |
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206 | MonitorKeyword ::implement( translationUnit ); |
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207 | } |
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208 | |
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209 | void implementMutexFuncs( std::list< Declaration * > & translationUnit ) { |
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210 | MutexKeyword ::implement( translationUnit ); |
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211 | } |
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212 | |
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213 | void implementThreadStarter( std::list< Declaration * > & translationUnit ) { |
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214 | |
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215 | } |
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216 | |
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217 | //============================================================================================= |
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218 | // Generic keyword implementation |
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219 | //============================================================================================= |
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220 | void ConcurrentSueKeyword::visit(StructDecl * decl) { |
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221 | if( decl->get_name() == type_name ) { |
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222 | assert( !type_decl ); |
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223 | type_decl = decl; |
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224 | } |
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225 | else if ( is_target(decl) ) { |
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226 | handle( decl ); |
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227 | } |
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228 | |
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229 | } |
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230 | |
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231 | void ConcurrentSueKeyword::handle( StructDecl * decl ) { |
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232 | if( ! decl->has_body() ) return; |
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233 | |
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234 | if( !type_decl ) throw SemanticError( context_error, decl ); |
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235 | |
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236 | FunctionDecl * func = forwardDeclare( decl ); |
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237 | ObjectDecl * field = addField( decl ); |
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238 | addRoutines( decl, field, func ); |
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239 | } |
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240 | |
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241 | FunctionDecl * ConcurrentSueKeyword::forwardDeclare( StructDecl * decl ) { |
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242 | |
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243 | StructDecl * forward = decl->clone(); |
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244 | forward->set_body( false ); |
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245 | deleteAll( forward->get_members() ); |
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246 | forward->get_members().clear(); |
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247 | |
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248 | FunctionType * type = new FunctionType( noQualifiers, false ); |
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249 | ObjectDecl * this_decl = new ObjectDecl( |
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250 | "this", |
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251 | noStorage, |
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252 | LinkageSpec::Cforall, |
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253 | nullptr, |
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254 | new PointerType( |
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255 | noQualifiers, |
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256 | new StructInstType( |
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257 | noQualifiers, |
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258 | decl |
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259 | ) |
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260 | ), |
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261 | nullptr |
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262 | ); |
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263 | |
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264 | type->get_parameters().push_back( this_decl ); |
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265 | type->get_returnVals().push_back( |
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266 | new ObjectDecl( |
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267 | "ret", |
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268 | noStorage, |
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269 | LinkageSpec::Cforall, |
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270 | nullptr, |
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271 | new PointerType( |
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272 | noQualifiers, |
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273 | new StructInstType( |
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274 | noQualifiers, |
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275 | type_decl |
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276 | ) |
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277 | ), |
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278 | nullptr |
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279 | ) |
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280 | ); |
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281 | |
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282 | FunctionDecl * get_decl = new FunctionDecl( |
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283 | getter_name, |
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284 | Type::Static, |
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285 | LinkageSpec::Cforall, |
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286 | type, |
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287 | nullptr, |
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288 | noAttributes, |
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289 | Type::Inline |
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290 | ); |
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291 | |
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292 | declsToAdd.push_back( forward ); |
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293 | declsToAdd.push_back( get_decl ); |
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294 | |
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295 | return get_decl; |
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296 | } |
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297 | |
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298 | ObjectDecl * ConcurrentSueKeyword::addField( StructDecl * decl ) { |
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299 | ObjectDecl * field = new ObjectDecl( |
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300 | field_name, |
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301 | noStorage, |
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302 | LinkageSpec::Cforall, |
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303 | nullptr, |
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304 | new StructInstType( |
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305 | noQualifiers, |
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306 | type_decl |
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307 | ), |
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308 | nullptr |
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309 | ); |
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310 | |
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311 | decl->get_members().push_back( field ); |
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312 | |
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313 | return field; |
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314 | } |
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315 | |
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316 | void ConcurrentSueKeyword::addRoutines( StructDecl * decl, ObjectDecl * field, FunctionDecl * func ) { |
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317 | CompoundStmt * statement = new CompoundStmt( noLabels ); |
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318 | statement->push_back( |
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319 | new ReturnStmt( |
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320 | noLabels, |
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321 | new AddressExpr( |
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322 | new MemberExpr( |
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323 | field, |
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324 | UntypedExpr::createDeref( new VariableExpr( func->get_functionType()->get_parameters().front() ) ) |
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325 | ) |
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326 | ) |
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327 | ) |
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328 | ); |
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329 | |
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330 | FunctionDecl * get_decl = func->clone(); |
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331 | |
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332 | get_decl->set_statements( statement ); |
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333 | |
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334 | declsToAddAfter.push_back( get_decl ); |
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335 | |
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336 | // get_decl->fixUniqueId(); |
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337 | } |
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338 | |
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339 | //============================================================================================= |
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340 | // Mutex keyword implementation |
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341 | //============================================================================================= |
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342 | void MutexKeyword::visit(FunctionDecl* decl) { |
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343 | std::list<DeclarationWithType*> mutexArgs = findMutexArgs( decl ); |
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344 | if( mutexArgs.empty() ) return; |
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345 | |
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346 | for(auto arg : mutexArgs) { |
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347 | validate( arg ); |
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348 | } |
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349 | |
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350 | CompoundStmt* body = decl->get_statements(); |
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351 | if( ! body ) return; |
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352 | |
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353 | if( !monitor_decl ) throw SemanticError( "mutex keyword requires monitors to be in scope, add #include <monitor>", decl ); |
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354 | if( !guard_decl ) throw SemanticError( "mutex keyword requires monitors to be in scope, add #include <monitor>", decl ); |
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355 | |
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356 | addStatments( body, mutexArgs ); |
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357 | } |
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358 | |
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359 | void MutexKeyword::visit(StructDecl* decl) { |
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360 | if( decl->get_name() == "monitor_desc" ) { |
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361 | assert( !monitor_decl ); |
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362 | monitor_decl = decl; |
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363 | } |
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364 | else if( decl->get_name() == "monitor_guard_t" ) { |
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365 | assert( !guard_decl ); |
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366 | guard_decl = decl; |
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367 | } |
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368 | } |
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369 | |
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370 | std::list<DeclarationWithType*> MutexKeyword::findMutexArgs( FunctionDecl* decl ) { |
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371 | std::list<DeclarationWithType*> mutexArgs; |
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372 | |
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373 | for( auto arg : decl->get_functionType()->get_parameters()) { |
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374 | //Find mutex arguments |
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375 | Type* ty = arg->get_type(); |
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376 | if( ! ty->get_mutex() ) continue; |
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377 | |
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378 | //Append it to the list |
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379 | mutexArgs.push_back( arg ); |
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380 | } |
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381 | |
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382 | return mutexArgs; |
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383 | } |
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384 | |
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385 | void MutexKeyword::validate( DeclarationWithType * arg ) { |
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386 | Type* ty = arg->get_type(); |
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387 | |
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388 | //Makes sure it's not a copy |
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389 | PointerType* pty = dynamic_cast< PointerType * >( ty ); |
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390 | if( ! pty ) throw SemanticError( "Mutex argument must be of pointer/reference type ", arg ); |
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391 | |
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392 | //Make sure the we are pointing directly to a type |
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393 | Type* base = pty->get_base(); |
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394 | if( dynamic_cast< PointerType * >( base ) ) throw SemanticError( "Mutex argument have exactly one level of indirection ", arg ); |
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395 | |
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396 | //Make sure that typed isn't mutex |
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397 | if( base->get_mutex() ) throw SemanticError( "mutex keyword may only appear once per argument ", arg ); |
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398 | } |
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399 | |
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400 | void MutexKeyword::addStatments( CompoundStmt * body, const std::list<DeclarationWithType * > & args ) { |
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401 | ObjectDecl * monitors = new ObjectDecl( |
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402 | "__monitors", |
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403 | noStorage, |
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404 | LinkageSpec::Cforall, |
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405 | nullptr, |
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406 | new ArrayType( |
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407 | noQualifiers, |
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408 | new PointerType( |
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409 | noQualifiers, |
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410 | new StructInstType( |
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411 | noQualifiers, |
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412 | monitor_decl |
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413 | ) |
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414 | ), |
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415 | new ConstantExpr( Constant::from_ulong( args.size() ) ), |
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416 | false, |
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417 | false |
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418 | ), |
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419 | new ListInit( |
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420 | map_range < std::list<Initializer*> > ( args, [this](DeclarationWithType * var ){ |
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421 | Type * type = var->get_type()->clone(); |
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422 | type->set_mutex( false ); |
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423 | return new SingleInit( new UntypedExpr( |
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424 | new NameExpr( "get_monitor" ), |
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425 | { new CastExpr( new VariableExpr( var ), type ) } |
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426 | ) ); |
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427 | }) |
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428 | ) |
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429 | ); |
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430 | |
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431 | //in reverse order : |
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432 | // monitor_guard_t __guard = { __monitors, # }; |
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433 | body->push_front( |
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434 | new DeclStmt( noLabels, new ObjectDecl( |
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435 | "__guard", |
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436 | noStorage, |
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437 | LinkageSpec::Cforall, |
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438 | nullptr, |
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439 | new StructInstType( |
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440 | noQualifiers, |
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441 | guard_decl |
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442 | ), |
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443 | new ListInit( |
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444 | { |
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445 | new SingleInit( new VariableExpr( monitors ) ), |
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446 | new SingleInit( new ConstantExpr( Constant::from_ulong( args.size() ) ) ) |
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447 | }, |
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448 | noDesignators, |
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449 | true |
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450 | ) |
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451 | )) |
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452 | ); |
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453 | |
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454 | //monitor_desc * __monitors[] = { get_monitor(a), get_monitor(b) }; |
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455 | body->push_front( new DeclStmt( noLabels, monitors) ); |
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456 | } |
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457 | }; |
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