[64adb03] | 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 : 0 |
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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 "SynTree/Declaration.h" |
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| 20 | #include "SynTree/Expression.h" |
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| 21 | #include "SynTree/Initializer.h" |
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| 22 | #include "SynTree/Mutator.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 | DeclarationNode::StorageClasses noStorage; |
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| 32 | Type::Qualifiers noQualifiers; |
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| 33 | } |
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| 34 | |
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| 35 | //============================================================================================= |
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| 36 | // Visitors declaration |
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| 37 | //============================================================================================= |
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| 38 | |
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| 39 | //----------------------------------------------------------------------------- |
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| 40 | //Handles thread type declarations : |
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| 41 | // thread Mythread { struct MyThread { |
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| 42 | // int data; int data; |
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| 43 | // a_struct_t more_data; a_struct_t more_data; |
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| 44 | // => thread_desc __thrd_d; |
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| 45 | // }; }; |
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| 46 | // static inline thread_desc * get_thread( MyThread * this ) { return &this->__thrd_d; } |
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| 47 | // void main( MyThread * this ); |
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| 48 | // |
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| 49 | class ThreadKeyword final : public Mutator { |
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| 50 | public: |
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| 51 | |
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| 52 | static void implement( std::list< Declaration * > & translationUnit ) {} |
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| 53 | }; |
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| 54 | |
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| 55 | //----------------------------------------------------------------------------- |
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| 56 | //Handles coroutine type declarations : |
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| 57 | // coroutine MyCoroutine { struct MyCoroutine { |
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| 58 | // int data; int data; |
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| 59 | // a_struct_t more_data; a_struct_t more_data; |
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| 60 | // => coroutine_desc __cor_d; |
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| 61 | // }; }; |
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| 62 | // static inline coroutine_desc * get_coroutine( MyCoroutine * this ) { return &this->__cor_d; } |
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| 63 | // void main( MyCoroutine * this ); |
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| 64 | // |
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| 65 | class CoroutineKeyword final : public Mutator { |
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| 66 | public: |
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| 67 | |
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| 68 | static void implement( std::list< Declaration * > & translationUnit ) {} |
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| 69 | }; |
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| 70 | |
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| 71 | //----------------------------------------------------------------------------- |
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| 72 | //Handles monitor type declarations : |
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| 73 | // monitor MyMonitor { struct MyMonitor { |
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| 74 | // int data; int data; |
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| 75 | // a_struct_t more_data; a_struct_t more_data; |
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| 76 | // => monitor_desc __mon_d; |
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| 77 | // }; }; |
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| 78 | // static inline monitor_desc * get_coroutine( MyMonitor * this ) { return &this->__cor_d; } |
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| 79 | // void main( MyMonitor * this ); |
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| 80 | // |
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| 81 | class MonitorKeyword final : public Mutator { |
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| 82 | public: |
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| 83 | |
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| 84 | static void implement( std::list< Declaration * > & translationUnit ) {} |
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| 85 | }; |
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| 86 | |
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| 87 | //----------------------------------------------------------------------------- |
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| 88 | //Handles mutex routines definitions : |
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| 89 | // void foo( A * mutex a, B * mutex b, int i ) { void foo( A * a, B * b, int i ) { |
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[9243cc91] | 90 | // monitor_desc * __monitors[] = { get_monitor(a), get_monitor(b) }; |
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[64adb03] | 91 | // monitor_guard_t __guard = { __monitors, 2 }; |
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| 92 | // /*Some code*/ => /*Some code*/ |
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| 93 | // } } |
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| 94 | // |
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| 95 | class MutexKeyword final : public Visitor { |
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| 96 | public: |
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| 97 | |
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| 98 | using Visitor::visit; |
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| 99 | virtual void visit( FunctionDecl *functionDecl ) override final; |
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[9243cc91] | 100 | virtual void visit( StructDecl *functionDecl ) override final; |
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[64adb03] | 101 | |
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| 102 | std::list<DeclarationWithType*> findMutexArgs( FunctionDecl* ); |
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| 103 | void validate( DeclarationWithType * ); |
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| 104 | void addStatments( CompoundStmt *, const std::list<DeclarationWithType * > &); |
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| 105 | |
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| 106 | static void implement( std::list< Declaration * > & translationUnit ) { |
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| 107 | MutexKeyword impl; |
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| 108 | acceptAll( translationUnit, impl ); |
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| 109 | } |
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[9243cc91] | 110 | |
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| 111 | private: |
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| 112 | StructDecl* monitor_decl = nullptr; |
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[64adb03] | 113 | }; |
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| 114 | |
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| 115 | //============================================================================================= |
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| 116 | // General entry routine |
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| 117 | //============================================================================================= |
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| 118 | void applyKeywords( std::list< Declaration * > & translationUnit ) { |
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| 119 | ThreadKeyword ::implement( translationUnit ); |
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| 120 | CoroutineKeyword ::implement( translationUnit ); |
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| 121 | MonitorKeyword ::implement( translationUnit ); |
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| 122 | MutexKeyword ::implement( translationUnit ); |
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| 123 | } |
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| 124 | |
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| 125 | //============================================================================================= |
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| 126 | // Mutex keyword implementation |
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| 127 | //============================================================================================= |
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| 128 | void MutexKeyword::visit(FunctionDecl* decl) { |
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| 129 | std::list<DeclarationWithType*> mutexArgs = findMutexArgs( decl ); |
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| 130 | if( mutexArgs.empty() ) return; |
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| 131 | |
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| 132 | for(auto arg : mutexArgs) { |
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| 133 | validate( arg ); |
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| 134 | } |
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| 135 | |
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| 136 | CompoundStmt* body = decl->get_statements(); |
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| 137 | if( ! body ) return; |
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| 138 | |
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[9243cc91] | 139 | assert(monitor_decl); |
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[64adb03] | 140 | addStatments( body, mutexArgs ); |
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| 141 | } |
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| 142 | |
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[9243cc91] | 143 | void MutexKeyword::visit(StructDecl* decl) { |
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| 144 | if( decl->get_name() == "monitor_desc" ) { |
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| 145 | assert( !monitor_decl ); |
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| 146 | monitor_decl = decl; |
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| 147 | } |
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| 148 | } |
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| 149 | |
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[64adb03] | 150 | std::list<DeclarationWithType*> MutexKeyword::findMutexArgs( FunctionDecl* decl ) { |
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| 151 | std::list<DeclarationWithType*> mutexArgs; |
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| 152 | |
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| 153 | for( auto arg : decl->get_functionType()->get_parameters()) { |
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| 154 | //Find mutex arguments |
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| 155 | Type* ty = arg->get_type(); |
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| 156 | if( ! ty->get_qualifiers().isMutex ) continue; |
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| 157 | |
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| 158 | //Append it to the list |
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| 159 | mutexArgs.push_back( arg ); |
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| 160 | } |
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| 161 | |
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| 162 | return mutexArgs; |
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| 163 | } |
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| 164 | |
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| 165 | void MutexKeyword::validate( DeclarationWithType * arg ) { |
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| 166 | Type* ty = arg->get_type(); |
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| 167 | |
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| 168 | //Makes sure it's not a copy |
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| 169 | PointerType* pty = dynamic_cast< PointerType * >( ty ); |
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| 170 | if( ! pty ) throw SemanticError( "Mutex argument must be of pointer/reference type ", arg ); |
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| 171 | |
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| 172 | //Make sure the we are pointing directly to a type |
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| 173 | Type* base = pty->get_base(); |
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| 174 | if( dynamic_cast< PointerType * >( base ) ) throw SemanticError( "Mutex argument have exactly one level of indirection ", arg ); |
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| 175 | |
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| 176 | //Make sure that typed isn't mutex |
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| 177 | if( ! base->get_qualifiers().isMutex ) throw SemanticError( "mutex keyword may only appear once per argument ", arg ); |
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| 178 | } |
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| 179 | |
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| 180 | void MutexKeyword::addStatments( CompoundStmt * body, const std::list<DeclarationWithType * > & args ) { |
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[9243cc91] | 181 | |
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| 182 | ObjectDecl * monitors = new ObjectDecl( |
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| 183 | "__monitors", |
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| 184 | noStorage, |
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| 185 | LinkageSpec::Cforall, |
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| 186 | nullptr, |
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| 187 | new ArrayType( |
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| 188 | noQualifiers, |
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| 189 | new PointerType( |
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| 190 | noQualifiers, |
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| 191 | new StructInstType( |
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| 192 | noQualifiers, |
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| 193 | monitor_decl |
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| 194 | ) |
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| 195 | ), |
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| 196 | new ConstantExpr( Constant::from_ulong( args.size() ) ), |
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| 197 | false, |
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| 198 | false |
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| 199 | ), |
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| 200 | new ListInit( |
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| 201 | map_range < std::list<Initializer*> > ( args, [](DeclarationWithType * var ){ |
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| 202 | return new SingleInit( new UntypedExpr( |
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| 203 | new NameExpr( "get_monitor" ), |
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| 204 | { new VariableExpr( var ) } |
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| 205 | ) ); |
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| 206 | }) |
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| 207 | ) |
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| 208 | ); |
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| 209 | |
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[64adb03] | 210 | //in reverse order : |
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| 211 | // monitor_guard_t __guard = { __monitors, # }; |
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| 212 | body->push_front( |
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| 213 | new DeclStmt( noLabels, new ObjectDecl( |
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| 214 | "__guard", |
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| 215 | noStorage, |
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| 216 | LinkageSpec::Cforall, |
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| 217 | nullptr, |
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| 218 | new StructInstType( |
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| 219 | noQualifiers, |
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| 220 | "monitor_guard_t" |
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| 221 | ), |
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| 222 | new ListInit( |
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| 223 | { |
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[9243cc91] | 224 | new SingleInit( new VariableExpr( monitors ) ), |
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[64adb03] | 225 | new SingleInit( new ConstantExpr( Constant::from_ulong( args.size() ) ) ) |
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| 226 | } |
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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 | //monitor_desc * __monitors[] = { a, b }; |
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[9243cc91] | 232 | body->push_front( new DeclStmt( noLabels, monitors) ); |
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[64adb03] | 233 | } |
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| 234 | }; |
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