source: src/Concurrency/Keywords.cc@ 8c9da33

ADT arm-eh ast-experimental enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr pthread-emulation qualifiedEnum
Last change on this file since 8c9da33 was 09f357ec, checked in by Thierry Delisle <tdelisle@…>, 6 years ago

Optim : coroutine and thread creation no-longer uses polymorphic call, leading to significant speedup. Breaks Arm support
  • Property mode set to 100644
File size: 22.8 KB
Line 
1//
2// Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// Keywords.cc --
8//
9// Author : Thierry Delisle
10// Created On : Mon Mar 13 12:41:22 2017
11// Last Modified By :
12// Last Modified On :
13// Update Count : 10
14//
15
16#include "Concurrency/Keywords.h"
17
18#include <cassert> // for assert
19#include <string> // for string, operator==
20
21#include "Common/PassVisitor.h" // for PassVisitor
22#include "Common/SemanticError.h" // for SemanticError
23#include "Common/utility.h" // for deleteAll, map_range
24#include "CodeGen/OperatorTable.h" // for isConstructor
25#include "InitTweak/InitTweak.h" // for getPointerBase
26#include "SynTree/LinkageSpec.h" // for Cforall
27#include "SynTree/Constant.h" // for Constant
28#include "SynTree/Declaration.h" // for StructDecl, FunctionDecl, ObjectDecl
29#include "SynTree/Expression.h" // for VariableExpr, ConstantExpr, Untype...
30#include "SynTree/Initializer.h" // for SingleInit, ListInit, Initializer ...
31#include "SynTree/Label.h" // for Label
32#include "SynTree/Statement.h" // for CompoundStmt, DeclStmt, ExprStmt
33#include "SynTree/Type.h" // for StructInstType, Type, PointerType
34#include "SynTree/Visitor.h" // for Visitor, acceptAll
35
36class Attribute;
37
38namespace Concurrency {
39 //=============================================================================================
40 // Pass declarations
41 //=============================================================================================
42
43 //-----------------------------------------------------------------------------
44 //Handles sue type declarations :
45 // sue MyType { struct MyType {
46 // int data; int data;
47 // a_struct_t more_data; a_struct_t more_data;
48 // => NewField_t newField;
49 // }; };
50 // static inline NewField_t * getter_name( MyType * this ) { return &this->newField; }
51 //
52 class ConcurrentSueKeyword : public WithDeclsToAdd {
53 public:
54
55 ConcurrentSueKeyword( std::string&& type_name, std::string&& field_name, std::string&& getter_name, std::string&& context_error, bool needs_main, AggregateDecl::Aggregate cast_target ) :
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 ) {}
57
58 virtual ~ConcurrentSueKeyword() {}
59
60 Declaration * postmutate( StructDecl * decl );
61 DeclarationWithType * postmutate( FunctionDecl * decl );
62
63 void handle( StructDecl * );
64 FunctionDecl * forwardDeclare( StructDecl * );
65 ObjectDecl * addField( StructDecl * );
66 void addRoutines( ObjectDecl *, FunctionDecl * );
67
68 virtual bool is_target( StructDecl * decl ) = 0;
69
70 Expression * postmutate( KeywordCastExpr * cast );
71
72 private:
73 const std::string type_name;
74 const std::string field_name;
75 const std::string getter_name;
76 const std::string context_error;
77 bool needs_main;
78 AggregateDecl::Aggregate cast_target;
79
80 StructDecl * type_decl = nullptr;
81 FunctionDecl * dtor_decl = nullptr;
82 };
83
84
85 //-----------------------------------------------------------------------------
86 //Handles thread type declarations :
87 // thread Mythread { struct MyThread {
88 // int data; int data;
89 // a_struct_t more_data; a_struct_t more_data;
90 // => thread_desc __thrd_d;
91 // }; };
92 // static inline thread_desc * get_thread( MyThread * this ) { return &this->__thrd_d; }
93 //
94 class ThreadKeyword final : public ConcurrentSueKeyword {
95 public:
96
97 ThreadKeyword() : ConcurrentSueKeyword(
98 "thread_desc",
99 "__thrd",
100 "get_thread",
101 "thread keyword requires threads to be in scope, add #include <thread.hfa>\n",
102 true,
103 AggregateDecl::Thread
104 )
105 {}
106
107 virtual ~ThreadKeyword() {}
108
109 virtual bool is_target( StructDecl * decl ) override final { return decl->is_thread(); }
110
111 static void implement( std::list< Declaration * > & translationUnit ) {
112 PassVisitor< ThreadKeyword > impl;
113 mutateAll( translationUnit, impl );
114 }
115 };
116
117 //-----------------------------------------------------------------------------
118 //Handles coroutine type declarations :
119 // coroutine MyCoroutine { struct MyCoroutine {
120 // int data; int data;
121 // a_struct_t more_data; a_struct_t more_data;
122 // => coroutine_desc __cor_d;
123 // }; };
124 // static inline coroutine_desc * get_coroutine( MyCoroutine * this ) { return &this->__cor_d; }
125 //
126 class CoroutineKeyword final : public ConcurrentSueKeyword {
127 public:
128
129 CoroutineKeyword() : ConcurrentSueKeyword(
130 "coroutine_desc",
131 "__cor",
132 "get_coroutine",
133 "coroutine keyword requires coroutines to be in scope, add #include <coroutine.hfa>\n",
134 true,
135 AggregateDecl::Coroutine
136 )
137 {}
138
139 virtual ~CoroutineKeyword() {}
140
141 virtual bool is_target( StructDecl * decl ) override final { return decl->is_coroutine(); }
142
143 static void implement( std::list< Declaration * > & translationUnit ) {
144 PassVisitor< CoroutineKeyword > impl;
145 mutateAll( translationUnit, impl );
146 }
147 };
148
149 //-----------------------------------------------------------------------------
150 //Handles monitor type declarations :
151 // monitor MyMonitor { struct MyMonitor {
152 // int data; int data;
153 // a_struct_t more_data; a_struct_t more_data;
154 // => monitor_desc __mon_d;
155 // }; };
156 // static inline monitor_desc * get_coroutine( MyMonitor * this ) { return &this->__cor_d; }
157 //
158 class MonitorKeyword final : public ConcurrentSueKeyword {
159 public:
160
161 MonitorKeyword() : ConcurrentSueKeyword(
162 "monitor_desc",
163 "__mon",
164 "get_monitor",
165 "monitor keyword requires monitors to be in scope, add #include <monitor.hfa>\n",
166 false,
167 AggregateDecl::Monitor
168 )
169 {}
170
171 virtual ~MonitorKeyword() {}
172
173 virtual bool is_target( StructDecl * decl ) override final { return decl->is_monitor(); }
174
175 static void implement( std::list< Declaration * > & translationUnit ) {
176 PassVisitor< MonitorKeyword > impl;
177 mutateAll( translationUnit, impl );
178 }
179 };
180
181 //-----------------------------------------------------------------------------
182 //Handles mutex routines definitions :
183 // void foo( A * mutex a, B * mutex b, int i ) { void foo( A * a, B * b, int i ) {
184 // monitor_desc * __monitors[] = { get_monitor(a), get_monitor(b) };
185 // monitor_guard_t __guard = { __monitors, 2 };
186 // /*Some code*/ => /*Some code*/
187 // } }
188 //
189 class MutexKeyword final {
190 public:
191
192 void postvisit( FunctionDecl * decl );
193 void postvisit( StructDecl * decl );
194
195 std::list<DeclarationWithType*> findMutexArgs( FunctionDecl*, bool & first );
196 void validate( DeclarationWithType * );
197 void addDtorStatments( FunctionDecl* func, CompoundStmt *, const std::list<DeclarationWithType * > &);
198 void addStatments( FunctionDecl* func, CompoundStmt *, const std::list<DeclarationWithType * > &);
199
200 static void implement( std::list< Declaration * > & translationUnit ) {
201 PassVisitor< MutexKeyword > impl;
202 acceptAll( translationUnit, impl );
203 }
204
205 private:
206 StructDecl* monitor_decl = nullptr;
207 StructDecl* guard_decl = nullptr;
208 StructDecl* dtor_guard_decl = nullptr;
209
210 static std::unique_ptr< Type > generic_func;
211 };
212
213 std::unique_ptr< Type > MutexKeyword::generic_func = std::unique_ptr< Type >(
214 new FunctionType(
215 noQualifiers,
216 true
217 )
218 );
219
220 //-----------------------------------------------------------------------------
221 //Handles mutex routines definitions :
222 // void foo( A * mutex a, B * mutex b, int i ) { void foo( A * a, B * b, int i ) {
223 // monitor_desc * __monitors[] = { get_monitor(a), get_monitor(b) };
224 // monitor_guard_t __guard = { __monitors, 2 };
225 // /*Some code*/ => /*Some code*/
226 // } }
227 //
228 class ThreadStarter final {
229 public:
230
231 void postvisit( FunctionDecl * decl );
232 void previsit ( StructDecl * decl );
233
234 void addStartStatement( FunctionDecl * decl, DeclarationWithType * param );
235
236 static void implement( std::list< Declaration * > & translationUnit ) {
237 PassVisitor< ThreadStarter > impl;
238 acceptAll( translationUnit, impl );
239 }
240
241 private :
242 bool thread_ctor_seen = false;
243 StructDecl * thread_decl = nullptr;
244 };
245
246 //=============================================================================================
247 // General entry routine
248 //=============================================================================================
249 void applyKeywords( std::list< Declaration * > & translationUnit ) {
250 ThreadKeyword ::implement( translationUnit );
251 CoroutineKeyword ::implement( translationUnit );
252 MonitorKeyword ::implement( translationUnit );
253 }
254
255 void implementMutexFuncs( std::list< Declaration * > & translationUnit ) {
256 MutexKeyword ::implement( translationUnit );
257 }
258
259 void implementThreadStarter( std::list< Declaration * > & translationUnit ) {
260 ThreadStarter ::implement( translationUnit );
261 }
262
263 //=============================================================================================
264 // Generic keyword implementation
265 //=============================================================================================
266 void fixupGenerics(FunctionType * func, StructDecl * decl) {
267 cloneAll(decl->parameters, func->forall);
268 for ( TypeDecl * td : func->forall ) {
269 strict_dynamic_cast<StructInstType*>(
270 func->parameters.front()->get_type()->stripReferences()
271 )->parameters.push_back(
272 new TypeExpr( new TypeInstType( noQualifiers, td->name, td ) )
273 );
274 }
275 }
276
277 Declaration * ConcurrentSueKeyword::postmutate(StructDecl * decl) {
278 if( decl->name == type_name && decl->body ) {
279 assert( !type_decl );
280 type_decl = decl;
281 }
282 else if ( is_target(decl) ) {
283 handle( decl );
284 }
285 return decl;
286 }
287
288 DeclarationWithType * ConcurrentSueKeyword::postmutate( FunctionDecl * decl ) {
289 if( !type_decl ) return decl;
290 if( !CodeGen::isDestructor( decl->name ) ) return decl;
291
292 auto params = decl->type->parameters;
293 if( params.size() != 1 ) return decl;
294
295 auto type = dynamic_cast<ReferenceType*>( params.front()->get_type() );
296 if( !type ) return decl;
297
298 auto stype = dynamic_cast<StructInstType*>( type->base );
299 if( !stype ) return decl;
300 if( stype->baseStruct != type_decl ) return decl;
301
302 if( !dtor_decl ) dtor_decl = decl;
303 return decl;
304 }
305
306 Expression * ConcurrentSueKeyword::postmutate( KeywordCastExpr * cast ) {
307 if ( cast_target == cast->target ) {
308 // convert (thread &)t to (thread_desc &)*get_thread(t), etc.
309 if( !type_decl ) SemanticError( cast, context_error );
310 if( !dtor_decl ) SemanticError( cast, context_error );
311 assert( cast->result == nullptr );
312 cast->set_result( new ReferenceType( noQualifiers, new StructInstType( noQualifiers, type_decl ) ) );
313 cast->concrete_target.field = field_name;
314 cast->concrete_target.getter = getter_name;
315 }
316 return cast;
317 }
318
319
320 void ConcurrentSueKeyword::handle( StructDecl * decl ) {
321 if( ! decl->body ) return;
322
323 if( !type_decl ) SemanticError( decl, context_error );
324 if( !dtor_decl ) SemanticError( decl, context_error );
325
326 FunctionDecl * func = forwardDeclare( decl );
327 ObjectDecl * field = addField( decl );
328 addRoutines( field, func );
329 }
330
331 FunctionDecl * ConcurrentSueKeyword::forwardDeclare( StructDecl * decl ) {
332
333 StructDecl * forward = decl->clone();
334 forward->set_body( false );
335 deleteAll( forward->get_members() );
336 forward->get_members().clear();
337
338 FunctionType * get_type = new FunctionType( noQualifiers, false );
339 ObjectDecl * this_decl = new ObjectDecl(
340 "this",
341 noStorageClasses,
342 LinkageSpec::Cforall,
343 nullptr,
344 new ReferenceType(
345 noQualifiers,
346 new StructInstType(
347 noQualifiers,
348 decl
349 )
350 ),
351 nullptr
352 );
353
354 get_type->get_parameters().push_back( this_decl->clone() );
355 get_type->get_returnVals().push_back(
356 new ObjectDecl(
357 "ret",
358 noStorageClasses,
359 LinkageSpec::Cforall,
360 nullptr,
361 new PointerType(
362 noQualifiers,
363 new StructInstType(
364 noQualifiers,
365 type_decl
366 )
367 ),
368 nullptr
369 )
370 );
371 fixupGenerics(get_type, decl);
372
373 FunctionDecl * get_decl = new FunctionDecl(
374 getter_name,
375 Type::Static,
376 LinkageSpec::Cforall,
377 get_type,
378 nullptr,
379 noAttributes,
380 Type::Inline
381 );
382
383 FunctionDecl * main_decl = nullptr;
384
385 if( needs_main ) {
386 FunctionType * main_type = new FunctionType( noQualifiers, false );
387
388 main_type->get_parameters().push_back( this_decl->clone() );
389
390 main_decl = new FunctionDecl(
391 "main",
392 noStorageClasses,
393 LinkageSpec::Cforall,
394 main_type,
395 nullptr
396 );
397 fixupGenerics(main_type, decl);
398 }
399
400 delete this_decl;
401
402 declsToAddBefore.push_back( forward );
403 if( needs_main ) declsToAddBefore.push_back( main_decl );
404 declsToAddBefore.push_back( get_decl );
405
406 return get_decl;
407 }
408
409 ObjectDecl * ConcurrentSueKeyword::addField( StructDecl * decl ) {
410 ObjectDecl * field = new ObjectDecl(
411 field_name,
412 noStorageClasses,
413 LinkageSpec::Cforall,
414 nullptr,
415 new StructInstType(
416 noQualifiers,
417 type_decl
418 ),
419 nullptr
420 );
421
422 decl->get_members().push_back( field );
423
424 return field;
425 }
426
427 void ConcurrentSueKeyword::addRoutines( ObjectDecl * field, FunctionDecl * func ) {
428 CompoundStmt * statement = new CompoundStmt();
429 statement->push_back(
430 new ReturnStmt(
431 new AddressExpr(
432 new MemberExpr(
433 field,
434 new CastExpr(
435 new VariableExpr( func->get_functionType()->get_parameters().front() ),
436 func->get_functionType()->get_parameters().front()->get_type()->stripReferences()->clone()
437 )
438 )
439 )
440 )
441 );
442
443 FunctionDecl * get_decl = func->clone();
444
445 get_decl->set_statements( statement );
446
447 declsToAddAfter.push_back( get_decl );
448
449 // get_decl->fixUniqueId();
450 }
451
452 //=============================================================================================
453 // Mutex keyword implementation
454 //=============================================================================================
455
456 void MutexKeyword::postvisit(FunctionDecl* decl) {
457
458 bool first = false;
459 std::list<DeclarationWithType*> mutexArgs = findMutexArgs( decl, first );
460 bool isDtor = CodeGen::isDestructor( decl->name );
461
462 // Is this function relevant to monitors
463 if( mutexArgs.empty() ) {
464 // If this is the destructor for a monitor it must be mutex
465 if(isDtor) {
466 Type* ty = decl->get_functionType()->get_parameters().front()->get_type();
467
468 // If it's a copy, it's not a mutex
469 ReferenceType* rty = dynamic_cast< ReferenceType * >( ty );
470 if( ! rty ) return;
471
472 // If we are not pointing directly to a type, it's not a mutex
473 Type* base = rty->get_base();
474 if( dynamic_cast< ReferenceType * >( base ) ) return;
475 if( dynamic_cast< PointerType * >( base ) ) return;
476
477 // Check if its a struct
478 StructInstType * baseStruct = dynamic_cast< StructInstType * >( base );
479 if( !baseStruct ) return;
480
481 // Check if its a monitor
482 if(baseStruct->baseStruct->is_monitor() || baseStruct->baseStruct->is_thread())
483 SemanticError( decl, "destructors for structures declared as \"monitor\" must use mutex parameters\n" );
484 }
485 return;
486 }
487
488 // Monitors can't be constructed with mutual exclusion
489 if( CodeGen::isConstructor(decl->name) && !first ) SemanticError( decl, "constructors cannot have mutex parameters" );
490
491 // It makes no sense to have multiple mutex parameters for the destructor
492 if( isDtor && mutexArgs.size() != 1 ) SemanticError( decl, "destructors can only have 1 mutex argument" );
493
494 // Make sure all the mutex arguments are monitors
495 for(auto arg : mutexArgs) {
496 validate( arg );
497 }
498
499 // Check if we need to instrument the body
500 CompoundStmt* body = decl->get_statements();
501 if( ! body ) return;
502
503 // Do we have the required headers
504 if( !monitor_decl || !guard_decl || !dtor_guard_decl )
505 SemanticError( decl, "mutex keyword requires monitors to be in scope, add #include <monitor.hfa>\n" );
506
507 // Instrument the body
508 if( isDtor ) {
509 addDtorStatments( decl, body, mutexArgs );
510 }
511 else {
512 addStatments( decl, body, mutexArgs );
513 }
514 }
515
516 void MutexKeyword::postvisit(StructDecl* decl) {
517
518 if( decl->name == "monitor_desc" && decl->body ) {
519 assert( !monitor_decl );
520 monitor_decl = decl;
521 }
522 else if( decl->name == "monitor_guard_t" && decl->body ) {
523 assert( !guard_decl );
524 guard_decl = decl;
525 }
526 else if( decl->name == "monitor_dtor_guard_t" && decl->body ) {
527 assert( !dtor_guard_decl );
528 dtor_guard_decl = decl;
529 }
530 }
531
532 std::list<DeclarationWithType*> MutexKeyword::findMutexArgs( FunctionDecl* decl, bool & first ) {
533 std::list<DeclarationWithType*> mutexArgs;
534
535 bool once = true;
536 for( auto arg : decl->get_functionType()->get_parameters()) {
537 //Find mutex arguments
538 Type* ty = arg->get_type();
539 if( ! ty->get_mutex() ) continue;
540
541 if(once) {first = true;}
542 once = false;
543
544 //Append it to the list
545 mutexArgs.push_back( arg );
546 }
547
548 return mutexArgs;
549 }
550
551 void MutexKeyword::validate( DeclarationWithType * arg ) {
552 Type* ty = arg->get_type();
553
554 //Makes sure it's not a copy
555 ReferenceType* rty = dynamic_cast< ReferenceType * >( ty );
556 if( ! rty ) SemanticError( arg, "Mutex argument must be of reference type " );
557
558 //Make sure the we are pointing directly to a type
559 Type* base = rty->get_base();
560 if( dynamic_cast< ReferenceType * >( base ) ) SemanticError( arg, "Mutex argument have exactly one level of indirection " );
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
564 if( base->get_mutex() ) SemanticError( arg, "mutex keyword may only appear once per argument " );
565 }
566
567 void MutexKeyword::addDtorStatments( FunctionDecl* func, CompoundStmt * body, const std::list<DeclarationWithType * > & args ) {
568 Type * arg_type = args.front()->get_type()->clone();
569 arg_type->set_mutex( false );
570
571 ObjectDecl * monitors = new ObjectDecl(
572 "__monitor",
573 noStorageClasses,
574 LinkageSpec::Cforall,
575 nullptr,
576 new PointerType(
577 noQualifiers,
578 new StructInstType(
579 noQualifiers,
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 };
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 ), new NameExpr("main") }
719 )
720 )
721 );
722 }
723};
724
725// Local Variables: //
726// mode: c //
727// tab-width: 4 //
728// End: //
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