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 : 5 |
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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 "Common/PassVisitor.h" // for PassVisitor |
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22 | #include "Common/SemanticError.h" // for SemanticError |
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23 | #include "Common/utility.h" // for deleteAll, map_range |
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24 | #include "CodeGen/OperatorTable.h" // for isConstructor |
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25 | #include "InitTweak/InitTweak.h" // for getPointerBase |
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26 | #include "Parser/LinkageSpec.h" // for Cforall |
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27 | #include "SynTree/Constant.h" // for Constant |
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28 | #include "SynTree/Declaration.h" // for StructDecl, FunctionDecl, ObjectDecl |
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29 | #include "SynTree/Expression.h" // for VariableExpr, ConstantExpr, Untype... |
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30 | #include "SynTree/Initializer.h" // for SingleInit, ListInit, Initializer ... |
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31 | #include "SynTree/Label.h" // for Label |
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32 | #include "SynTree/Statement.h" // for CompoundStmt, DeclStmt, ExprStmt |
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33 | #include "SynTree/Type.h" // for StructInstType, Type, PointerType |
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34 | #include "SynTree/Visitor.h" // for Visitor, acceptAll |
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35 | |
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36 | class Attribute; |
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37 | |
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38 | namespace Concurrency { |
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39 | //============================================================================================= |
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40 | // Pass declarations |
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41 | //============================================================================================= |
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42 | |
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43 | //----------------------------------------------------------------------------- |
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44 | //Handles sue type declarations : |
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45 | // sue MyType { struct MyType { |
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46 | // int data; int data; |
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47 | // a_struct_t more_data; a_struct_t more_data; |
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48 | // => NewField_t newField; |
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49 | // }; }; |
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50 | // static inline NewField_t * getter_name( MyType * this ) { return &this->newField; } |
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51 | // |
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52 | class ConcurrentSueKeyword : public WithDeclsToAdd { |
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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, bool needs_main, KeywordCastExpr::Target cast_target ) : |
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56 | type_name( type_name ), field_name( field_name ), getter_name( getter_name ), context_error( context_error ), needs_main( needs_main ), cast_target( cast_target ) {} |
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57 | |
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58 | virtual ~ConcurrentSueKeyword() {} |
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59 | |
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60 | Declaration * postmutate( StructDecl * decl ); |
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61 | DeclarationWithType * postmutate( FunctionDecl * decl ); |
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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( 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 | Expression * postmutate( KeywordCastExpr * cast ); |
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71 | |
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72 | private: |
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73 | const std::string type_name; |
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74 | const std::string field_name; |
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75 | const std::string getter_name; |
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76 | const std::string context_error; |
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77 | bool needs_main; |
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78 | KeywordCastExpr::Target cast_target; |
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79 | |
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80 | StructDecl * type_decl = nullptr; |
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81 | FunctionDecl * dtor_decl = nullptr; |
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82 | }; |
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83 | |
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84 | |
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85 | //----------------------------------------------------------------------------- |
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86 | //Handles thread type declarations : |
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87 | // thread Mythread { struct MyThread { |
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88 | // int data; int data; |
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89 | // a_struct_t more_data; a_struct_t more_data; |
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90 | // => thread_desc __thrd_d; |
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91 | // }; }; |
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92 | // static inline thread_desc * get_thread( MyThread * this ) { return &this->__thrd_d; } |
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93 | // |
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94 | class ThreadKeyword final : public ConcurrentSueKeyword { |
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95 | public: |
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96 | |
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97 | ThreadKeyword() : ConcurrentSueKeyword( |
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98 | "thread_desc", |
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99 | "__thrd", |
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100 | "get_thread", |
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101 | "thread keyword requires threads to be in scope, add #include <thread.hfa>\n", |
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102 | true, |
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103 | KeywordCastExpr::Thread |
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104 | ) |
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105 | {} |
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106 | |
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107 | virtual ~ThreadKeyword() {} |
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108 | |
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109 | virtual bool is_target( StructDecl * decl ) override final { return decl->is_thread(); } |
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110 | |
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111 | static void implement( std::list< Declaration * > & translationUnit ) { |
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112 | PassVisitor< ThreadKeyword > impl; |
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113 | mutateAll( translationUnit, impl ); |
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114 | } |
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115 | }; |
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116 | |
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117 | //----------------------------------------------------------------------------- |
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118 | //Handles coroutine type declarations : |
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119 | // coroutine MyCoroutine { struct MyCoroutine { |
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120 | // int data; int data; |
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121 | // a_struct_t more_data; a_struct_t more_data; |
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122 | // => coroutine_desc __cor_d; |
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123 | // }; }; |
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124 | // static inline coroutine_desc * get_coroutine( MyCoroutine * this ) { return &this->__cor_d; } |
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125 | // |
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126 | class CoroutineKeyword final : public ConcurrentSueKeyword { |
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127 | public: |
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128 | |
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129 | CoroutineKeyword() : ConcurrentSueKeyword( |
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130 | "coroutine_desc", |
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131 | "__cor", |
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132 | "get_coroutine", |
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133 | "coroutine keyword requires coroutines to be in scope, add #include <coroutine.hfa>\n", |
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134 | true, |
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135 | KeywordCastExpr::Coroutine |
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136 | ) |
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137 | {} |
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138 | |
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139 | virtual ~CoroutineKeyword() {} |
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140 | |
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141 | virtual bool is_target( StructDecl * decl ) override final { return decl->is_coroutine(); } |
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142 | |
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143 | static void implement( std::list< Declaration * > & translationUnit ) { |
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144 | PassVisitor< CoroutineKeyword > impl; |
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145 | mutateAll( translationUnit, impl ); |
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146 | } |
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147 | }; |
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148 | |
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149 | //----------------------------------------------------------------------------- |
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150 | //Handles monitor type declarations : |
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151 | // monitor MyMonitor { struct MyMonitor { |
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152 | // int data; int data; |
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153 | // a_struct_t more_data; a_struct_t more_data; |
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154 | // => monitor_desc __mon_d; |
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155 | // }; }; |
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156 | // static inline monitor_desc * get_coroutine( MyMonitor * this ) { return &this->__cor_d; } |
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157 | // |
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158 | class MonitorKeyword final : public ConcurrentSueKeyword { |
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159 | public: |
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160 | |
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161 | MonitorKeyword() : ConcurrentSueKeyword( |
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162 | "monitor_desc", |
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163 | "__mon", |
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164 | "get_monitor", |
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165 | "monitor keyword requires monitors to be in scope, add #include <monitor.hfa>\n", |
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166 | false, |
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167 | KeywordCastExpr::Monitor |
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168 | ) |
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169 | {} |
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170 | |
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171 | virtual ~MonitorKeyword() {} |
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172 | |
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173 | virtual bool is_target( StructDecl * decl ) override final { return decl->is_monitor(); } |
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174 | |
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175 | static void implement( std::list< Declaration * > & translationUnit ) { |
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176 | PassVisitor< MonitorKeyword > impl; |
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177 | mutateAll( translationUnit, impl ); |
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178 | } |
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179 | }; |
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180 | |
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181 | //----------------------------------------------------------------------------- |
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182 | //Handles mutex routines definitions : |
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183 | // void foo( A * mutex a, B * mutex b, int i ) { void foo( A * a, B * b, int i ) { |
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184 | // monitor_desc * __monitors[] = { get_monitor(a), get_monitor(b) }; |
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185 | // monitor_guard_t __guard = { __monitors, 2 }; |
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186 | // /*Some code*/ => /*Some code*/ |
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187 | // } } |
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188 | // |
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189 | class MutexKeyword final { |
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190 | public: |
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191 | |
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192 | void postvisit( FunctionDecl * decl ); |
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193 | void postvisit( StructDecl * decl ); |
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194 | |
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195 | std::list<DeclarationWithType*> findMutexArgs( FunctionDecl*, bool & first ); |
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196 | void validate( DeclarationWithType * ); |
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197 | void addDtorStatments( FunctionDecl* func, CompoundStmt *, const std::list<DeclarationWithType * > &); |
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198 | void addStatments( FunctionDecl* func, CompoundStmt *, const std::list<DeclarationWithType * > &); |
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199 | |
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200 | static void implement( std::list< Declaration * > & translationUnit ) { |
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201 | PassVisitor< MutexKeyword > impl; |
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202 | acceptAll( translationUnit, impl ); |
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203 | } |
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204 | |
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205 | private: |
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206 | StructDecl* monitor_decl = nullptr; |
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207 | StructDecl* guard_decl = nullptr; |
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208 | StructDecl* dtor_guard_decl = nullptr; |
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209 | |
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210 | static std::unique_ptr< Type > generic_func; |
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211 | }; |
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212 | |
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213 | std::unique_ptr< Type > MutexKeyword::generic_func = std::unique_ptr< Type >( |
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214 | new FunctionType( |
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215 | noQualifiers, |
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216 | true |
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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 mutex routines definitions : |
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222 | // void foo( A * mutex a, B * mutex b, int i ) { void foo( A * a, B * b, int i ) { |
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223 | // monitor_desc * __monitors[] = { get_monitor(a), get_monitor(b) }; |
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224 | // monitor_guard_t __guard = { __monitors, 2 }; |
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225 | // /*Some code*/ => /*Some code*/ |
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226 | // } } |
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227 | // |
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228 | class ThreadStarter final { |
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229 | public: |
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230 | |
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231 | void postvisit( FunctionDecl * decl ); |
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232 | void previsit ( StructDecl * decl ); |
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233 | |
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234 | void addStartStatement( FunctionDecl * decl, DeclarationWithType * param ); |
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235 | |
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236 | static void implement( std::list< Declaration * > & translationUnit ) { |
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237 | PassVisitor< ThreadStarter > impl; |
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238 | acceptAll( translationUnit, impl ); |
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239 | } |
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240 | |
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241 | private : |
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242 | bool thread_ctor_seen = false; |
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243 | StructDecl * thread_decl = nullptr; |
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244 | }; |
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245 | |
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246 | //============================================================================================= |
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247 | // General entry routine |
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248 | //============================================================================================= |
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249 | void applyKeywords( std::list< Declaration * > & translationUnit ) { |
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250 | ThreadKeyword ::implement( translationUnit ); |
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251 | CoroutineKeyword ::implement( translationUnit ); |
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252 | MonitorKeyword ::implement( translationUnit ); |
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253 | } |
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254 | |
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255 | void implementMutexFuncs( std::list< Declaration * > & translationUnit ) { |
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256 | MutexKeyword ::implement( translationUnit ); |
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257 | } |
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258 | |
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259 | void implementThreadStarter( std::list< Declaration * > & translationUnit ) { |
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260 | ThreadStarter ::implement( translationUnit ); |
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261 | } |
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262 | |
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263 | //============================================================================================= |
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264 | // Generic keyword implementation |
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265 | //============================================================================================= |
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266 | void fixupGenerics(FunctionType * func, StructDecl * decl) { |
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267 | cloneAll(decl->parameters, func->forall); |
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268 | for ( TypeDecl * td : func->forall ) { |
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269 | strict_dynamic_cast<StructInstType*>( |
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270 | func->parameters.front()->get_type()->stripReferences() |
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271 | )->parameters.push_back( |
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272 | new TypeExpr( new TypeInstType( noQualifiers, td->name, td ) ) |
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273 | ); |
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274 | } |
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275 | } |
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276 | |
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277 | Declaration * ConcurrentSueKeyword::postmutate(StructDecl * decl) { |
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278 | if( decl->name == type_name && decl->body ) { |
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279 | assert( !type_decl ); |
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280 | type_decl = decl; |
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281 | } |
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282 | else if ( is_target(decl) ) { |
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283 | handle( decl ); |
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284 | } |
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285 | return decl; |
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286 | } |
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287 | |
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288 | DeclarationWithType * ConcurrentSueKeyword::postmutate( FunctionDecl * decl ) { |
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289 | if( !type_decl ) return decl; |
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290 | if( !CodeGen::isDestructor( decl->name ) ) return decl; |
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291 | |
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292 | auto params = decl->type->parameters; |
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293 | if( params.size() != 1 ) return decl; |
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294 | |
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295 | auto type = dynamic_cast<ReferenceType*>( params.front()->get_type() ); |
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296 | if( !type ) return decl; |
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297 | |
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298 | auto stype = dynamic_cast<StructInstType*>( type->base ); |
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299 | if( !stype ) return decl; |
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300 | if( stype->baseStruct != type_decl ) return decl; |
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301 | |
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302 | if( !dtor_decl ) dtor_decl = decl; |
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303 | return decl; |
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304 | } |
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305 | |
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306 | Expression * ConcurrentSueKeyword::postmutate( KeywordCastExpr * cast ) { |
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307 | if ( cast_target == cast->target ) { |
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308 | // convert (thread &)t to (thread_desc &)*get_thread(t), etc. |
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309 | if( !type_decl ) SemanticError( cast, context_error ); |
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310 | if( !dtor_decl ) SemanticError( cast, context_error ); |
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311 | assert( cast->result == nullptr ); |
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312 | cast->set_result( new ReferenceType( noQualifiers, new StructInstType( noQualifiers, type_decl ) ) ); |
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313 | cast->concrete_target.field = field_name; |
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314 | cast->concrete_target.getter = getter_name; |
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315 | } |
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316 | return cast; |
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317 | } |
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318 | |
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319 | |
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320 | void ConcurrentSueKeyword::handle( StructDecl * decl ) { |
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321 | if( ! decl->body ) return; |
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322 | |
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323 | if( !type_decl ) SemanticError( decl, context_error ); |
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324 | if( !dtor_decl ) SemanticError( decl, context_error ); |
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325 | |
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326 | FunctionDecl * func = forwardDeclare( decl ); |
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327 | ObjectDecl * field = addField( decl ); |
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328 | addRoutines( field, func ); |
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329 | } |
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330 | |
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331 | FunctionDecl * ConcurrentSueKeyword::forwardDeclare( StructDecl * decl ) { |
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332 | |
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333 | StructDecl * forward = decl->clone(); |
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334 | forward->set_body( false ); |
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335 | deleteAll( forward->get_members() ); |
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336 | forward->get_members().clear(); |
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337 | |
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338 | FunctionType * get_type = new FunctionType( noQualifiers, false ); |
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339 | ObjectDecl * this_decl = new ObjectDecl( |
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340 | "this", |
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341 | noStorageClasses, |
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342 | LinkageSpec::Cforall, |
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343 | nullptr, |
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344 | new ReferenceType( |
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345 | noQualifiers, |
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346 | new StructInstType( |
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347 | noQualifiers, |
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348 | decl |
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349 | ) |
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350 | ), |
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351 | nullptr |
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352 | ); |
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353 | |
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354 | get_type->get_parameters().push_back( this_decl->clone() ); |
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355 | get_type->get_returnVals().push_back( |
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356 | new ObjectDecl( |
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357 | "ret", |
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358 | noStorageClasses, |
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359 | LinkageSpec::Cforall, |
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360 | nullptr, |
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361 | new PointerType( |
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362 | noQualifiers, |
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363 | new StructInstType( |
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364 | noQualifiers, |
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365 | type_decl |
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366 | ) |
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367 | ), |
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368 | nullptr |
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369 | ) |
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370 | ); |
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371 | fixupGenerics(get_type, decl); |
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372 | |
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373 | FunctionDecl * get_decl = new FunctionDecl( |
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374 | getter_name, |
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375 | Type::Static, |
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376 | LinkageSpec::Cforall, |
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377 | get_type, |
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378 | nullptr, |
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379 | noAttributes, |
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380 | Type::Inline |
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381 | ); |
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382 | |
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383 | FunctionDecl * main_decl = nullptr; |
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384 | |
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385 | if( needs_main ) { |
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386 | FunctionType * main_type = new FunctionType( noQualifiers, false ); |
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387 | |
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388 | main_type->get_parameters().push_back( this_decl->clone() ); |
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389 | |
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390 | main_decl = new FunctionDecl( |
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391 | "main", |
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392 | noStorageClasses, |
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393 | LinkageSpec::Cforall, |
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394 | main_type, |
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395 | nullptr |
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396 | ); |
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397 | fixupGenerics(main_type, decl); |
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398 | } |
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399 | |
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400 | delete this_decl; |
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401 | |
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402 | declsToAddBefore.push_back( forward ); |
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403 | if( needs_main ) declsToAddBefore.push_back( main_decl ); |
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404 | declsToAddBefore.push_back( get_decl ); |
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405 | |
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406 | return get_decl; |
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407 | } |
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408 | |
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409 | ObjectDecl * ConcurrentSueKeyword::addField( StructDecl * decl ) { |
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410 | ObjectDecl * field = new ObjectDecl( |
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411 | field_name, |
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412 | noStorageClasses, |
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413 | LinkageSpec::Cforall, |
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414 | nullptr, |
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415 | new StructInstType( |
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416 | noQualifiers, |
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417 | type_decl |
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418 | ), |
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419 | nullptr |
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420 | ); |
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421 | |
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422 | decl->get_members().push_back( field ); |
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423 | |
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424 | return field; |
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425 | } |
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426 | |
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427 | void ConcurrentSueKeyword::addRoutines( ObjectDecl * field, FunctionDecl * func ) { |
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428 | CompoundStmt * statement = new CompoundStmt(); |
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429 | statement->push_back( |
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430 | new ReturnStmt( |
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431 | new AddressExpr( |
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432 | new MemberExpr( |
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433 | field, |
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434 | new CastExpr( |
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435 | new VariableExpr( func->get_functionType()->get_parameters().front() ), |
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436 | func->get_functionType()->get_parameters().front()->get_type()->stripReferences()->clone() |
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437 | ) |
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438 | ) |
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439 | ) |
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440 | ) |
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441 | ); |
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442 | |
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443 | FunctionDecl * get_decl = func->clone(); |
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444 | |
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445 | get_decl->set_statements( statement ); |
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446 | |
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447 | declsToAddAfter.push_back( get_decl ); |
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448 | |
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449 | // get_decl->fixUniqueId(); |
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450 | } |
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451 | |
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452 | //============================================================================================= |
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453 | // Mutex keyword implementation |
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454 | //============================================================================================= |
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455 | |
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456 | void MutexKeyword::postvisit(FunctionDecl* decl) { |
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457 | |
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458 | bool first = false; |
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459 | std::list<DeclarationWithType*> mutexArgs = findMutexArgs( decl, first ); |
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460 | bool isDtor = CodeGen::isDestructor( decl->name ); |
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461 | |
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462 | // Is this function relevant to monitors |
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463 | if( mutexArgs.empty() ) { |
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464 | // If this is the destructor for a monitor it must be mutex |
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465 | if(isDtor) { |
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466 | Type* ty = decl->get_functionType()->get_parameters().front()->get_type(); |
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467 | |
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468 | // If it's a copy, it's not a mutex |
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469 | ReferenceType* rty = dynamic_cast< ReferenceType * >( ty ); |
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470 | if( ! rty ) return; |
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471 | |
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472 | // If we are not pointing directly to a type, it's not a mutex |
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473 | Type* base = rty->get_base(); |
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474 | if( dynamic_cast< ReferenceType * >( base ) ) return; |
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475 | if( dynamic_cast< PointerType * >( base ) ) return; |
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476 | |
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477 | // Check if its a struct |
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478 | StructInstType * baseStruct = dynamic_cast< StructInstType * >( base ); |
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479 | if( !baseStruct ) return; |
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480 | |
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481 | // Check if its a monitor |
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482 | if(baseStruct->baseStruct->is_monitor() || baseStruct->baseStruct->is_thread()) |
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483 | SemanticError( decl, "destructors for structures declared as \"monitor\" must use mutex parameters\n" ); |
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484 | } |
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485 | return; |
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486 | } |
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487 | |
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488 | // Monitors can't be constructed with mutual exclusion |
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489 | if( CodeGen::isConstructor(decl->name) && !first ) SemanticError( decl, "constructors cannot have mutex parameters" ); |
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490 | |
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491 | // It makes no sense to have multiple mutex parameters for the destructor |
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492 | if( isDtor && mutexArgs.size() != 1 ) SemanticError( decl, "destructors can only have 1 mutex argument" ); |
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493 | |
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494 | // Make sure all the mutex arguments are monitors |
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495 | for(auto arg : mutexArgs) { |
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496 | validate( arg ); |
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497 | } |
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498 | |
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499 | // Check if we need to instrument the body |
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500 | CompoundStmt* body = decl->get_statements(); |
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501 | if( ! body ) return; |
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502 | |
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503 | // Do we have the required headers |
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504 | if( !monitor_decl || !guard_decl || !dtor_guard_decl ) |
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505 | SemanticError( decl, "mutex keyword requires monitors to be in scope, add #include <monitor.hfa>\n" ); |
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506 | |
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507 | // Instrument the body |
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508 | if( isDtor ) { |
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509 | addDtorStatments( decl, body, mutexArgs ); |
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510 | } |
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511 | else { |
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512 | addStatments( decl, body, mutexArgs ); |
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513 | } |
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514 | } |
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515 | |
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516 | void MutexKeyword::postvisit(StructDecl* decl) { |
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517 | |
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518 | if( decl->name == "monitor_desc" && decl->body ) { |
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519 | assert( !monitor_decl ); |
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520 | monitor_decl = decl; |
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521 | } |
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522 | else if( decl->name == "monitor_guard_t" && decl->body ) { |
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523 | assert( !guard_decl ); |
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524 | guard_decl = decl; |
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525 | } |
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526 | else if( decl->name == "monitor_dtor_guard_t" && decl->body ) { |
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527 | assert( !dtor_guard_decl ); |
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528 | dtor_guard_decl = decl; |
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529 | } |
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530 | } |
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531 | |
---|
532 | std::list<DeclarationWithType*> MutexKeyword::findMutexArgs( FunctionDecl* decl, bool & first ) { |
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533 | std::list<DeclarationWithType*> mutexArgs; |
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534 | |
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535 | bool once = true; |
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536 | for( auto arg : decl->get_functionType()->get_parameters()) { |
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537 | //Find mutex arguments |
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538 | Type* ty = arg->get_type(); |
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539 | if( ! ty->get_mutex() ) continue; |
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540 | |
---|
541 | if(once) {first = true;} |
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542 | once = false; |
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543 | |
---|
544 | //Append it to the list |
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545 | mutexArgs.push_back( arg ); |
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546 | } |
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547 | |
---|
548 | return mutexArgs; |
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549 | } |
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550 | |
---|
551 | void MutexKeyword::validate( DeclarationWithType * arg ) { |
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552 | Type* ty = arg->get_type(); |
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553 | |
---|
554 | //Makes sure it's not a copy |
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555 | ReferenceType* rty = dynamic_cast< ReferenceType * >( ty ); |
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556 | if( ! rty ) SemanticError( arg, "Mutex argument must be of reference type " ); |
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557 | |
---|
558 | //Make sure the we are pointing directly to a type |
---|
559 | Type* base = rty->get_base(); |
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560 | if( dynamic_cast< ReferenceType * >( base ) ) SemanticError( arg, "Mutex argument have exactly one level of indirection " ); |
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561 | if( dynamic_cast< PointerType * >( base ) ) SemanticError( arg, "Mutex argument have exactly one level of indirection " ); |
---|
562 | |
---|
563 | //Make sure that typed isn't mutex |
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564 | if( base->get_mutex() ) SemanticError( arg, "mutex keyword may only appear once per argument " ); |
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565 | } |
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566 | |
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567 | void MutexKeyword::addDtorStatments( FunctionDecl* func, CompoundStmt * body, const std::list<DeclarationWithType * > & args ) { |
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568 | Type * arg_type = args.front()->get_type()->clone(); |
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569 | arg_type->set_mutex( false ); |
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570 | |
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571 | ObjectDecl * monitors = new ObjectDecl( |
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572 | "__monitor", |
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573 | noStorageClasses, |
---|
574 | LinkageSpec::Cforall, |
---|
575 | nullptr, |
---|
576 | new PointerType( |
---|
577 | noQualifiers, |
---|
578 | new StructInstType( |
---|
579 | noQualifiers, |
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580 | monitor_decl |
---|
581 | ) |
---|
582 | ), |
---|
583 | new SingleInit( new UntypedExpr( |
---|
584 | new NameExpr( "get_monitor" ), |
---|
585 | { new CastExpr( new VariableExpr( args.front() ), arg_type ) } |
---|
586 | )) |
---|
587 | ); |
---|
588 | |
---|
589 | assert(generic_func); |
---|
590 | |
---|
591 | //in reverse order : |
---|
592 | // monitor_dtor_guard_t __guard = { __monitors, func }; |
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593 | body->push_front( |
---|
594 | new DeclStmt( new ObjectDecl( |
---|
595 | "__guard", |
---|
596 | noStorageClasses, |
---|
597 | LinkageSpec::Cforall, |
---|
598 | nullptr, |
---|
599 | new StructInstType( |
---|
600 | noQualifiers, |
---|
601 | dtor_guard_decl |
---|
602 | ), |
---|
603 | new ListInit( |
---|
604 | { |
---|
605 | new SingleInit( new AddressExpr( new VariableExpr( monitors ) ) ), |
---|
606 | new SingleInit( new CastExpr( new VariableExpr( func ), generic_func->clone() ) ) |
---|
607 | }, |
---|
608 | noDesignators, |
---|
609 | true |
---|
610 | ) |
---|
611 | )) |
---|
612 | ); |
---|
613 | |
---|
614 | //monitor_desc * __monitors[] = { get_monitor(a), get_monitor(b) }; |
---|
615 | body->push_front( new DeclStmt( monitors) ); |
---|
616 | } |
---|
617 | |
---|
618 | void MutexKeyword::addStatments( FunctionDecl* func, CompoundStmt * body, const std::list<DeclarationWithType * > & args ) { |
---|
619 | ObjectDecl * monitors = new ObjectDecl( |
---|
620 | "__monitors", |
---|
621 | noStorageClasses, |
---|
622 | LinkageSpec::Cforall, |
---|
623 | nullptr, |
---|
624 | new ArrayType( |
---|
625 | noQualifiers, |
---|
626 | new PointerType( |
---|
627 | noQualifiers, |
---|
628 | new StructInstType( |
---|
629 | noQualifiers, |
---|
630 | monitor_decl |
---|
631 | ) |
---|
632 | ), |
---|
633 | new ConstantExpr( Constant::from_ulong( args.size() ) ), |
---|
634 | false, |
---|
635 | false |
---|
636 | ), |
---|
637 | new ListInit( |
---|
638 | map_range < std::list<Initializer*> > ( args, [](DeclarationWithType * var ){ |
---|
639 | Type * type = var->get_type()->clone(); |
---|
640 | type->set_mutex( false ); |
---|
641 | return new SingleInit( new UntypedExpr( |
---|
642 | new NameExpr( "get_monitor" ), |
---|
643 | { new CastExpr( new VariableExpr( var ), type ) } |
---|
644 | ) ); |
---|
645 | }) |
---|
646 | ) |
---|
647 | ); |
---|
648 | |
---|
649 | assert(generic_func); |
---|
650 | |
---|
651 | // in reverse order : |
---|
652 | // monitor_guard_t __guard = { __monitors, #, func }; |
---|
653 | body->push_front( |
---|
654 | new DeclStmt( new ObjectDecl( |
---|
655 | "__guard", |
---|
656 | noStorageClasses, |
---|
657 | LinkageSpec::Cforall, |
---|
658 | nullptr, |
---|
659 | new StructInstType( |
---|
660 | noQualifiers, |
---|
661 | guard_decl |
---|
662 | ), |
---|
663 | new ListInit( |
---|
664 | { |
---|
665 | new SingleInit( new VariableExpr( monitors ) ), |
---|
666 | new SingleInit( new ConstantExpr( Constant::from_ulong( args.size() ) ) ), |
---|
667 | new SingleInit( new CastExpr( new VariableExpr( func ), generic_func->clone() ) ) |
---|
668 | }, |
---|
669 | noDesignators, |
---|
670 | true |
---|
671 | ) |
---|
672 | )) |
---|
673 | ); |
---|
674 | |
---|
675 | //monitor_desc * __monitors[] = { get_monitor(a), get_monitor(b) }; |
---|
676 | body->push_front( new DeclStmt( monitors) ); |
---|
677 | } |
---|
678 | |
---|
679 | //============================================================================================= |
---|
680 | // General entry routine |
---|
681 | //============================================================================================= |
---|
682 | void ThreadStarter::previsit( StructDecl * decl ) { |
---|
683 | if( decl->name == "thread_desc" && decl->body ) { |
---|
684 | assert( !thread_decl ); |
---|
685 | thread_decl = decl; |
---|
686 | } |
---|
687 | } |
---|
688 | |
---|
689 | void ThreadStarter::postvisit(FunctionDecl * decl) { |
---|
690 | if( ! CodeGen::isConstructor(decl->name) ) return; |
---|
691 | |
---|
692 | Type * typeof_this = InitTweak::getTypeofThis(decl->type); |
---|
693 | StructInstType * ctored_type = dynamic_cast< StructInstType * >( typeof_this ); |
---|
694 | if( ctored_type && ctored_type->baseStruct == thread_decl ) { |
---|
695 | thread_ctor_seen = true; |
---|
696 | } |
---|
697 | |
---|
698 | DeclarationWithType * param = decl->get_functionType()->get_parameters().front(); |
---|
699 | auto type = dynamic_cast< StructInstType * >( InitTweak::getPointerBase( param->get_type() ) ); |
---|
700 | if( type && type->get_baseStruct()->is_thread() ) { |
---|
701 | if( !thread_decl || !thread_ctor_seen ) { |
---|
702 | SemanticError( type->get_baseStruct()->location, "thread keyword requires threads to be in scope, add #include <thread.hfa>"); |
---|
703 | } |
---|
704 | |
---|
705 | addStartStatement( decl, param ); |
---|
706 | } |
---|
707 | } |
---|
708 | |
---|
709 | void ThreadStarter::addStartStatement( FunctionDecl * decl, DeclarationWithType * param ) { |
---|
710 | CompoundStmt * stmt = decl->get_statements(); |
---|
711 | |
---|
712 | if( ! stmt ) return; |
---|
713 | |
---|
714 | stmt->push_back( |
---|
715 | new ExprStmt( |
---|
716 | new UntypedExpr( |
---|
717 | new NameExpr( "__thrd_start" ), |
---|
718 | { new VariableExpr( param ) } |
---|
719 | ) |
---|
720 | ) |
---|
721 | ); |
---|
722 | } |
---|
723 | }; |
---|
724 | |
---|
725 | // Local Variables: // |
---|
726 | // mode: c // |
---|
727 | // tab-width: 4 // |
---|
728 | // End: // |
---|