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source: src/Concurrency/Keywords.cc @ 6c2dc00

ADTast-experimentalenumforall-pointer-decayjacob/cs343-translationpthread-emulationqualifiedEnum

Last change on this file since 6c2dc00 was 6cebfef, checked in by caparsons <caparson@…>, 3 years ago
added mutex stmt monitor
Property mode set to `100644`
File size: 38.1 KB

Rev	Line
[64adb03]	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 :
[07de76b]	13	// Update Count : 10
[64adb03]	14	//
	15
	16	#include "Concurrency/Keywords.h"
	17
[427854b]	18	#include <cassert> // for assert
	19	#include <string> // for string, operator==
	20
[1c01c58]	21	#include <iostream>
	22
	23	#include "Common/Examine.h" // for isMainFor
[427854b]	24	#include "Common/PassVisitor.h" // for PassVisitor
	25	#include "Common/SemanticError.h" // for SemanticError
	26	#include "Common/utility.h" // for deleteAll, map_range
	27	#include "CodeGen/OperatorTable.h" // for isConstructor
	28	#include "ControlStruct/LabelGenerator.h" // for LebelGenerator
	29	#include "InitTweak/InitTweak.h" // for getPointerBase
	30	#include "SynTree/LinkageSpec.h" // for Cforall
	31	#include "SynTree/Constant.h" // for Constant
	32	#include "SynTree/Declaration.h" // for StructDecl, FunctionDecl, ObjectDecl
	33	#include "SynTree/Expression.h" // for VariableExpr, ConstantExpr, Untype...
	34	#include "SynTree/Initializer.h" // for SingleInit, ListInit, Initializer ...
	35	#include "SynTree/Label.h" // for Label
	36	#include "SynTree/Statement.h" // for CompoundStmt, DeclStmt, ExprStmt
	37	#include "SynTree/Type.h" // for StructInstType, Type, PointerType
	38	#include "SynTree/Visitor.h" // for Visitor, acceptAll
[1c01c58]	39	#include "Virtual/Tables.h"
[bf2438c]	40
	41	class Attribute;
[64adb03]	42
	43	namespace Concurrency {
[ecfd758]	44	inline static std::string getTypeIdName( std::string const & exception_name ) {
	45	return exception_name.empty() ? std::string() : Virtual::typeIdType( exception_name );
	46	}
[1c01c58]	47	inline static std::string getVTableName( std::string const & exception_name ) {
[ecfd758]	48	return exception_name.empty() ? std::string() : Virtual::vtableTypeName( exception_name );
[1c01c58]	49	}
	50
[ab8c6a6]	51	// Only detects threads constructed with the keyword thread.
	52	inline static bool isThread( DeclarationWithType * decl ) {
	53	Type * baseType = decl->get_type()->stripDeclarator();
	54	StructInstType * instType = dynamic_cast<StructInstType *>( baseType );
	55	if ( nullptr == instType ) { return false; }
	56	return instType->baseStruct->is_thread();
	57	}
	58
[64adb03]	59	//=============================================================================================
[2065609]	60	// Pass declarations
[64adb03]	61	//=============================================================================================
	62
[bcda04c]	63	//-----------------------------------------------------------------------------
	64	//Handles sue type declarations :
	65	// sue MyType { struct MyType {
	66	// int data; int data;
	67	// a_struct_t more_data; a_struct_t more_data;
	68	// => NewField_t newField;
	69	// }; };
	70	// static inline NewField_t * getter_name( MyType * this ) { return &this->newField; }
	71	//
[2065609]	72	class ConcurrentSueKeyword : public WithDeclsToAdd {
[bcda04c]	73	public:
	74
[1c01c58]	75	ConcurrentSueKeyword( std::string&& type_name, std::string&& field_name,
	76	std::string&& getter_name, std::string&& context_error, std::string&& exception_name,
	77	bool needs_main, AggregateDecl::Aggregate cast_target ) :
	78	type_name( type_name ), field_name( field_name ), getter_name( getter_name ),
[69c5c00]	79	context_error( context_error ), exception_name( exception_name ),
[ecfd758]	80	typeid_name( getTypeIdName( exception_name ) ),
[69c5c00]	81	vtable_name( getVTableName( exception_name ) ),
[1c01c58]	82	needs_main( needs_main ), cast_target( cast_target ) {}
[bcda04c]	83
	84	virtual ~ConcurrentSueKeyword() {}
	85
[9a705dc8]	86	Declaration * postmutate( StructDecl * decl );
[6c3a5ac1]	87	DeclarationWithType * postmutate( FunctionDecl * decl );
[bcda04c]	88
	89	void handle( StructDecl * );
[ecfd758]	90	void addTypeId( StructDecl * );
[1c01c58]	91	void addVtableForward( StructDecl * );
[bcda04c]	92	FunctionDecl * forwardDeclare( StructDecl * );
	93	ObjectDecl * addField( StructDecl * );
[2f9a722]	94	void addRoutines( ObjectDecl , FunctionDecl );
[bcda04c]	95
	96	virtual bool is_target( StructDecl * decl ) = 0;
	97
[9a705dc8]	98	Expression * postmutate( KeywordCastExpr * cast );
	99
[bcda04c]	100	private:
	101	const std::string type_name;
	102	const std::string field_name;
	103	const std::string getter_name;
	104	const std::string context_error;
[69c5c00]	105	const std::string exception_name;
[ecfd758]	106	const std::string typeid_name;
[1c01c58]	107	const std::string vtable_name;
[bd4d011]	108	bool needs_main;
[312029a]	109	AggregateDecl::Aggregate cast_target;
[bcda04c]	110
[6c3a5ac1]	111	StructDecl * type_decl = nullptr;
	112	FunctionDecl * dtor_decl = nullptr;
[69c5c00]	113	StructDecl * except_decl = nullptr;
[ecfd758]	114	StructDecl * typeid_decl = nullptr;
[1c01c58]	115	StructDecl * vtable_decl = nullptr;
[bcda04c]	116	};
	117
	118
[64adb03]	119	//-----------------------------------------------------------------------------
	120	//Handles thread type declarations :
	121	// thread Mythread { struct MyThread {
	122	// int data; int data;
	123	// a_struct_t more_data; a_struct_t more_data;
[e84ab3d]	124	// => thread$ __thrd_d;
[64adb03]	125	// }; };
[e84ab3d]	126	// static inline thread$ * get_thread( MyThread * this ) { return &this->__thrd_d; }
[64adb03]	127	//
[bcda04c]	128	class ThreadKeyword final : public ConcurrentSueKeyword {
[64adb03]	129	public:
	130
[bcda04c]	131	ThreadKeyword() : ConcurrentSueKeyword(
[e84ab3d]	132	"thread$",
[bcda04c]	133	"__thrd",
	134	"get_thread",
[6c3a5ac1]	135	"thread keyword requires threads to be in scope, add #include <thread.hfa>\n",
[ab8c6a6]	136	"ThreadCancelled",
[9a705dc8]	137	true,
[312029a]	138	AggregateDecl::Thread
[bcda04c]	139	)
	140	{}
	141
	142	virtual ~ThreadKeyword() {}
	143
	144	virtual bool is_target( StructDecl * decl ) override final { return decl->is_thread(); }
	145
	146	static void implement( std::list< Declaration * > & translationUnit ) {
[2065609]	147	PassVisitor< ThreadKeyword > impl;
[9a705dc8]	148	mutateAll( translationUnit, impl );
[bcda04c]	149	}
[64adb03]	150	};
	151
	152	//-----------------------------------------------------------------------------
	153	//Handles coroutine type declarations :
	154	// coroutine MyCoroutine { struct MyCoroutine {
	155	// int data; int data;
	156	// a_struct_t more_data; a_struct_t more_data;
[e84ab3d]	157	// => coroutine$ __cor_d;
[64adb03]	158	// }; };
[e84ab3d]	159	// static inline coroutine$ * get_coroutine( MyCoroutine * this ) { return &this->__cor_d; }
[64adb03]	160	//
[bcda04c]	161	class CoroutineKeyword final : public ConcurrentSueKeyword {
[64adb03]	162	public:
	163
[bcda04c]	164	CoroutineKeyword() : ConcurrentSueKeyword(
[e84ab3d]	165	"coroutine$",
[bcda04c]	166	"__cor",
	167	"get_coroutine",
[6c3a5ac1]	168	"coroutine keyword requires coroutines to be in scope, add #include <coroutine.hfa>\n",
[1c01c58]	169	"CoroutineCancelled",
[9a705dc8]	170	true,
[312029a]	171	AggregateDecl::Coroutine
[bcda04c]	172	)
	173	{}
[b32ada31]	174
[bcda04c]	175	virtual ~CoroutineKeyword() {}
	176
	177	virtual bool is_target( StructDecl * decl ) override final { return decl->is_coroutine(); }
[b32ada31]	178
	179	static void implement( std::list< Declaration * > & translationUnit ) {
[2065609]	180	PassVisitor< CoroutineKeyword > impl;
[9a705dc8]	181	mutateAll( translationUnit, impl );
[b32ada31]	182	}
[64adb03]	183	};
	184
[427854b]	185
	186
[64adb03]	187	//-----------------------------------------------------------------------------
	188	//Handles monitor type declarations :
	189	// monitor MyMonitor { struct MyMonitor {
	190	// int data; int data;
	191	// a_struct_t more_data; a_struct_t more_data;
[e84ab3d]	192	// => monitor$ __mon_d;
[64adb03]	193	// }; };
[e84ab3d]	194	// static inline monitor$ * get_coroutine( MyMonitor * this ) { return &this->__cor_d; }
[64adb03]	195	//
[bcda04c]	196	class MonitorKeyword final : public ConcurrentSueKeyword {
[64adb03]	197	public:
	198
[bcda04c]	199	MonitorKeyword() : ConcurrentSueKeyword(
[e84ab3d]	200	"monitor$",
[bcda04c]	201	"__mon",
	202	"get_monitor",
[6c3a5ac1]	203	"monitor keyword requires monitors to be in scope, add #include <monitor.hfa>\n",
[1c01c58]	204	"",
[9a705dc8]	205	false,
[312029a]	206	AggregateDecl::Monitor
[bcda04c]	207	)
	208	{}
	209
	210	virtual ~MonitorKeyword() {}
	211
	212	virtual bool is_target( StructDecl * decl ) override final { return decl->is_monitor(); }
	213
	214	static void implement( std::list< Declaration * > & translationUnit ) {
[2065609]	215	PassVisitor< MonitorKeyword > impl;
[9a705dc8]	216	mutateAll( translationUnit, impl );
[bcda04c]	217	}
[64adb03]	218	};
	219
[427854b]	220	//-----------------------------------------------------------------------------
	221	//Handles generator type declarations :
	222	// generator MyGenerator { struct MyGenerator {
	223	// int data; int data;
	224	// a_struct_t more_data; a_struct_t more_data;
	225	// => int __gen_next;
	226	// }; };
	227	//
	228	class GeneratorKeyword final : public ConcurrentSueKeyword {
	229	public:
	230
	231	GeneratorKeyword() : ConcurrentSueKeyword(
[e84ab3d]	232	"generator$",
[427854b]	233	"__generator_state",
	234	"get_generator",
[e84ab3d]	235	"Unable to find builtin type generator$\n",
[1c01c58]	236	"",
[427854b]	237	true,
	238	AggregateDecl::Generator
	239	)
	240	{}
	241
	242	virtual ~GeneratorKeyword() {}
	243
	244	virtual bool is_target( StructDecl * decl ) override final { return decl->is_generator(); }
	245
	246	static void implement( std::list< Declaration * > & translationUnit ) {
	247	PassVisitor< GeneratorKeyword > impl;
	248	mutateAll( translationUnit, impl );
	249	}
	250	};
	251
	252
	253	//-----------------------------------------------------------------------------
	254	class SuspendKeyword final : public WithStmtsToAdd, public WithGuards {
	255	public:
	256	SuspendKeyword() = default;
	257	virtual ~SuspendKeyword() = default;
	258
	259	void premutate( FunctionDecl * );
	260	DeclarationWithType * postmutate( FunctionDecl * );
	261
	262	Statement * postmutate( SuspendStmt * );
	263
	264	static void implement( std::list< Declaration * > & translationUnit ) {
	265	PassVisitor< SuspendKeyword > impl;
	266	mutateAll( translationUnit, impl );
	267	}
	268
	269	private:
	270	bool is_real_suspend( FunctionDecl * );
	271
	272	Statement * make_generator_suspend( SuspendStmt * );
	273	Statement * make_coroutine_suspend( SuspendStmt * );
	274
	275	struct LabelPair {
	276	Label obj;
	277	int idx;
	278	};
	279
	280	LabelPair make_label() {
	281	labels.push_back( gen.newLabel("generator") );
	282	return { labels.back(), int(labels.size()) };
	283	}
	284
	285	DeclarationWithType * in_generator = nullptr;
	286	FunctionDecl * decl_suspend = nullptr;
	287	std::vector<Label> labels;
	288	ControlStruct::LabelGenerator & gen = *ControlStruct::LabelGenerator::getGenerator();
	289	};
	290
[64adb03]	291	//-----------------------------------------------------------------------------
	292	//Handles mutex routines definitions :
	293	// void foo( A * mutex a, B * mutex b, int i ) { void foo( A * a, B * b, int i ) {
[e84ab3d]	294	// monitor$ * __monitors[] = { get_monitor(a), get_monitor(b) };
[64adb03]	295	// monitor_guard_t __guard = { __monitors, 2 };
	296	// /Some code/ => /Some code/
	297	// } }
	298	//
[2065609]	299	class MutexKeyword final {
[64adb03]	300	public:
	301
[2065609]	302	void postvisit( FunctionDecl * decl );
	303	void postvisit( StructDecl * decl );
[6cebfef]	304	Statement * postmutate( MutexStmt * stmt );
[64adb03]	305
[db4d8e3]	306	std::list<DeclarationWithType> findMutexArgs( FunctionDecl, bool & first );
[64adb03]	307	void validate( DeclarationWithType * );
[ab8c6a6]	308	void addDtorStatements( FunctionDecl* func, CompoundStmt , const std::list<DeclarationWithType > &);
	309	void addStatements( FunctionDecl* func, CompoundStmt , const std::list<DeclarationWithType > &);
[6cebfef]	310	void addStatements( CompoundStmt * body, const std::list<Expression * > & args );
[ab8c6a6]	311	void addThreadDtorStatements( FunctionDecl* func, CompoundStmt * body, const std::list<DeclarationWithType * > & args );
[64adb03]	312
	313	static void implement( std::list< Declaration * > & translationUnit ) {
[2065609]	314	PassVisitor< MutexKeyword > impl;
[64adb03]	315	acceptAll( translationUnit, impl );
[6cebfef]	316	mutateAll( translationUnit, impl );
[64adb03]	317	}
[9243cc91]	318
	319	private:
	320	StructDecl* monitor_decl = nullptr;
[ef42b143]	321	StructDecl* guard_decl = nullptr;
[549c006]	322	StructDecl* dtor_guard_decl = nullptr;
[ab8c6a6]	323	StructDecl* thread_guard_decl = nullptr;
[97e3296]	324
	325	static std::unique_ptr< Type > generic_func;
[64adb03]	326	};
	327
[97e3296]	328	std::unique_ptr< Type > MutexKeyword::generic_func = std::unique_ptr< Type >(
	329	new FunctionType(
	330	noQualifiers,
	331	true
	332	)
	333	);
	334
[bd4d011]	335	//-----------------------------------------------------------------------------
	336	//Handles mutex routines definitions :
	337	// void foo( A * mutex a, B * mutex b, int i ) { void foo( A * a, B * b, int i ) {
[e84ab3d]	338	// monitor$ * __monitors[] = { get_monitor(a), get_monitor(b) };
[bd4d011]	339	// monitor_guard_t __guard = { __monitors, 2 };
	340	// /Some code/ => /Some code/
	341	// } }
	342	//
[2065609]	343	class ThreadStarter final {
[bd4d011]	344	public:
	345
[2065609]	346	void postvisit( FunctionDecl * decl );
[549c006]	347	void previsit ( StructDecl * decl );
[bd4d011]	348
	349	void addStartStatement( FunctionDecl * decl, DeclarationWithType * param );
	350
	351	static void implement( std::list< Declaration * > & translationUnit ) {
[2065609]	352	PassVisitor< ThreadStarter > impl;
[bd4d011]	353	acceptAll( translationUnit, impl );
	354	}
[549c006]	355
	356	private :
	357	bool thread_ctor_seen = false;
	358	StructDecl * thread_decl = nullptr;
[bd4d011]	359	};
	360
[64adb03]	361	//=============================================================================================
	362	// General entry routine
	363	//=============================================================================================
	364	void applyKeywords( std::list< Declaration * > & translationUnit ) {
	365	ThreadKeyword ::implement( translationUnit );
	366	CoroutineKeyword ::implement( translationUnit );
	367	MonitorKeyword ::implement( translationUnit );
[427854b]	368	GeneratorKeyword ::implement( translationUnit );
	369	SuspendKeyword ::implement( translationUnit );
[bcda04c]	370	}
	371
	372	void implementMutexFuncs( std::list< Declaration * > & translationUnit ) {
[64adb03]	373	MutexKeyword ::implement( translationUnit );
	374	}
	375
[bcda04c]	376	void implementThreadStarter( std::list< Declaration * > & translationUnit ) {
[bd4d011]	377	ThreadStarter ::implement( translationUnit );
[bcda04c]	378	}
	379
[b32ada31]	380	//=============================================================================================
[bcda04c]	381	// Generic keyword implementation
[b32ada31]	382	//=============================================================================================
[2db79e5]	383	void fixupGenerics(FunctionType * func, StructDecl * decl) {
	384	cloneAll(decl->parameters, func->forall);
	385	for ( TypeDecl * td : func->forall ) {
	386	strict_dynamic_cast<StructInstType*>(
	387	func->parameters.front()->get_type()->stripReferences()
	388	)->parameters.push_back(
	389	new TypeExpr( new TypeInstType( noQualifiers, td->name, td ) )
	390	);
	391	}
	392	}
	393
[9a705dc8]	394	Declaration * ConcurrentSueKeyword::postmutate(StructDecl * decl) {
[9f5ecf5]	395	if( decl->name == type_name && decl->body ) {
[bcda04c]	396	assert( !type_decl );
	397	type_decl = decl;
[b32ada31]	398	}
[bcda04c]	399	else if ( is_target(decl) ) {
[b32ada31]	400	handle( decl );
	401	}
[69c5c00]	402	else if ( !except_decl && exception_name == decl->name && decl->body ) {
	403	except_decl = decl;
	404	}
[ecfd758]	405	else if ( !typeid_decl && typeid_name == decl->name && decl->body ) {
	406	typeid_decl = decl;
	407	}
[1c01c58]	408	else if ( !vtable_decl && vtable_name == decl->name && decl->body ) {
	409	vtable_decl = decl;
	410	}
	411	// Might be able to get ride of is target.
	412	assert( is_target(decl) == (cast_target == decl->kind) );
[9a705dc8]	413	return decl;
[b32ada31]	414	}
	415
[6c3a5ac1]	416	DeclarationWithType * ConcurrentSueKeyword::postmutate( FunctionDecl * decl ) {
[1c01c58]	417	if ( type_decl && isDestructorFor( decl, type_decl ) )
	418	dtor_decl = decl;
[b583113]	419	else if ( vtable_name.empty() \|\| !decl->has_body() )
[43cedfb1]	420	;
[1c01c58]	421	else if ( auto param = isMainFor( decl, cast_target ) ) {
	422	// This should never trigger.
	423	assert( vtable_decl );
	424	// Should be safe because of isMainFor.
	425	StructInstType * struct_type = static_cast<StructInstType *>(
	426	static_cast<ReferenceType *>( param->get_type() )->base );
	427	assert( struct_type );
	428
[69c5c00]	429	std::list< Expression * > poly_args = { new TypeExpr( struct_type->clone() ) };
	430	ObjectDecl * vtable_object = Virtual::makeVtableInstance(
[b583113]	431	"_default_vtable_object_declaration",
[69c5c00]	432	vtable_decl->makeInst( poly_args ), struct_type, nullptr );
	433	declsToAddAfter.push_back( vtable_object );
[b583113]	434	declsToAddAfter.push_back(
	435	new ObjectDecl(
	436	Virtual::concurrentDefaultVTableName(),
[67b421c]	437	noStorageClasses,
[b583113]	438	LinkageSpec::Cforall,
	439	/* bitfieldWidth */ nullptr,
	440	new ReferenceType( Type::Const, vtable_object->type->clone() ),
	441	new SingleInit( new VariableExpr( vtable_object ) )
	442	)
	443	);
[69c5c00]	444	declsToAddAfter.push_back( Virtual::makeGetExceptionFunction(
	445	vtable_object, except_decl->makeInst( std::move( poly_args ) )
	446	) );
[1c01c58]	447	}
[6c3a5ac1]	448
	449	return decl;
	450	}
	451
[9a705dc8]	452	Expression * ConcurrentSueKeyword::postmutate( KeywordCastExpr * cast ) {
	453	if ( cast_target == cast->target ) {
[e84ab3d]	454	// convert (thread &)t to (thread$ &)*get_thread(t), etc.
[9a705dc8]	455	if( !type_decl ) SemanticError( cast, context_error );
[6c3a5ac1]	456	if( !dtor_decl ) SemanticError( cast, context_error );
[3b0c8cb]	457	assert( cast->result == nullptr );
	458	cast->set_result( new ReferenceType( noQualifiers, new StructInstType( noQualifiers, type_decl ) ) );
	459	cast->concrete_target.field = field_name;
	460	cast->concrete_target.getter = getter_name;
[9a705dc8]	461	}
	462	return cast;
	463	}
	464
	465
[bcda04c]	466	void ConcurrentSueKeyword::handle( StructDecl * decl ) {
[9f5ecf5]	467	if( ! decl->body ) return;
[b32ada31]	468
[a16764a6]	469	if( !type_decl ) SemanticError( decl, context_error );
[6c3a5ac1]	470	if( !dtor_decl ) SemanticError( decl, context_error );
[b32ada31]	471
[ecfd758]	472	if ( !exception_name.empty() ) {
	473	if( !typeid_decl ) SemanticError( decl, context_error );
	474	if( !vtable_decl ) SemanticError( decl, context_error );
	475
	476	addTypeId( decl );
	477	addVtableForward( decl );
	478	}
[bcda04c]	479	FunctionDecl * func = forwardDeclare( decl );
	480	ObjectDecl * field = addField( decl );
[2f9a722]	481	addRoutines( field, func );
[b32ada31]	482	}
	483
[ecfd758]	484	void ConcurrentSueKeyword::addTypeId( StructDecl * decl ) {
	485	assert( typeid_decl );
	486	StructInstType typeid_type( Type::Const, typeid_decl );
	487	typeid_type.parameters.push_back( new TypeExpr(
	488	new StructInstType( noQualifiers, decl )
[69c5c00]	489	) );
[ecfd758]	490	declsToAddBefore.push_back( Virtual::makeTypeIdInstance( &typeid_type ) );
	491	}
	492
	493	void ConcurrentSueKeyword::addVtableForward( StructDecl * decl ) {
	494	assert( vtable_decl );
	495	std::list< Expression * > poly_args = {
	496	new TypeExpr( new StructInstType( noQualifiers, decl ) ),
	497	};
	498	declsToAddBefore.push_back( Virtual::makeGetExceptionForward(
	499	vtable_decl->makeInst( poly_args ),
	500	except_decl->makeInst( poly_args )
	501	) );
[b583113]	502	ObjectDecl * vtable_object = Virtual::makeVtableForward(
	503	"_default_vtable_object_declaration",
	504	vtable_decl->makeInst( move( poly_args ) ) );
	505	declsToAddBefore.push_back( vtable_object );
[8edbe40]	506	declsToAddBefore.push_back(
[b583113]	507	new ObjectDecl(
	508	Virtual::concurrentDefaultVTableName(),
[67b421c]	509	Type::StorageClasses( Type::Extern ),
[b583113]	510	LinkageSpec::Cforall,
	511	/* bitfieldWidth */ nullptr,
	512	new ReferenceType( Type::Const, vtable_object->type->clone() ),
	513	/* init */ nullptr
	514	)
	515	);
[1c01c58]	516	}
	517
[bcda04c]	518	FunctionDecl * ConcurrentSueKeyword::forwardDeclare( StructDecl * decl ) {
	519
	520	StructDecl * forward = decl->clone();
	521	forward->set_body( false );
	522	deleteAll( forward->get_members() );
	523	forward->get_members().clear();
	524
[bd4d011]	525	FunctionType * get_type = new FunctionType( noQualifiers, false );
[bcda04c]	526	ObjectDecl * this_decl = new ObjectDecl(
	527	"this",
[ba3706f]	528	noStorageClasses,
[b32ada31]	529	LinkageSpec::Cforall,
	530	nullptr,
[83a071f9]	531	new ReferenceType(
[b32ada31]	532	noQualifiers,
[bcda04c]	533	new StructInstType(
	534	noQualifiers,
	535	decl
	536	)
[b32ada31]	537	),
	538	nullptr
	539	);
	540
[2db79e5]	541	get_type->get_parameters().push_back( this_decl->clone() );
[bd4d011]	542	get_type->get_returnVals().push_back(
[e04b636]	543	new ObjectDecl(
	544	"ret",
[ba3706f]	545	noStorageClasses,
[e04b636]	546	LinkageSpec::Cforall,
	547	nullptr,
	548	new PointerType(
	549	noQualifiers,
	550	new StructInstType(
	551	noQualifiers,
[bcda04c]	552	type_decl
[e04b636]	553	)
	554	),
	555	nullptr
	556	)
	557	);
[2db79e5]	558	fixupGenerics(get_type, decl);
[b32ada31]	559
[bcda04c]	560	FunctionDecl * get_decl = new FunctionDecl(
	561	getter_name,
	562	Type::Static,
	563	LinkageSpec::Cforall,
[bd4d011]	564	get_type,
[bcda04c]	565	nullptr,
[a8078ee]	566	{ new Attribute("const") },
[bcda04c]	567	Type::Inline
	568	);
	569
[bd4d011]	570	FunctionDecl * main_decl = nullptr;
	571
	572	if( needs_main ) {
	573	FunctionType * main_type = new FunctionType( noQualifiers, false );
[bf2438c]	574
[bd4d011]	575	main_type->get_parameters().push_back( this_decl->clone() );
	576
	577	main_decl = new FunctionDecl(
	578	"main",
[ba3706f]	579	noStorageClasses,
[bd4d011]	580	LinkageSpec::Cforall,
	581	main_type,
	582	nullptr
	583	);
[2db79e5]	584	fixupGenerics(main_type, decl);
[bd4d011]	585	}
	586
[2db79e5]	587	delete this_decl;
	588
[2065609]	589	declsToAddBefore.push_back( forward );
	590	if( needs_main ) declsToAddBefore.push_back( main_decl );
	591	declsToAddBefore.push_back( get_decl );
[bcda04c]	592
	593	return get_decl;
	594	}
	595
	596	ObjectDecl * ConcurrentSueKeyword::addField( StructDecl * decl ) {
	597	ObjectDecl * field = new ObjectDecl(
	598	field_name,
[ba3706f]	599	noStorageClasses,
[bcda04c]	600	LinkageSpec::Cforall,
	601	nullptr,
	602	new StructInstType(
	603	noQualifiers,
	604	type_decl
	605	),
	606	nullptr
	607	);
	608
	609	decl->get_members().push_back( field );
	610
	611	return field;
	612	}
	613
[2f9a722]	614	void ConcurrentSueKeyword::addRoutines( ObjectDecl * field, FunctionDecl * func ) {
[ba3706f]	615	CompoundStmt * statement = new CompoundStmt();
[bf2438c]	616	statement->push_back(
[b32ada31]	617	new ReturnStmt(
[e04b636]	618	new AddressExpr(
[bcda04c]	619	new MemberExpr(
	620	field,
[2db79e5]	621	new CastExpr(
	622	new VariableExpr( func->get_functionType()->get_parameters().front() ),
[b81fd95]	623	func->get_functionType()->get_parameters().front()->get_type()->stripReferences()->clone(),
	624	false
[2db79e5]	625	)
[e04b636]	626	)
[b32ada31]	627	)
	628	)
	629	);
	630
[bcda04c]	631	FunctionDecl * get_decl = func->clone();
	632
	633	get_decl->set_statements( statement );
[e04b636]	634
	635	declsToAddAfter.push_back( get_decl );
[427854b]	636	}
	637
	638	//=============================================================================================
	639	// Suspend keyword implementation
	640	//=============================================================================================
	641	bool SuspendKeyword::is_real_suspend( FunctionDecl * func ) {
	642	if(isMangled(func->linkage)) return false; // the real suspend isn't mangled
	643	if(func->name != "__cfactx_suspend") return false; // the real suspend has a specific name
	644	if(func->type->parameters.size() != 0) return false; // Too many parameters
	645	if(func->type->returnVals.size() != 0) return false; // Too many return values
	646
	647	return true;
[b32ada31]	648	}
	649
[427854b]	650	void SuspendKeyword::premutate( FunctionDecl * func ) {
	651	GuardValue(in_generator);
	652	in_generator = nullptr;
	653
	654	// Is this the real suspend?
	655	if(is_real_suspend(func)) {
	656	decl_suspend = decl_suspend ? decl_suspend : func;
	657	return;
	658	}
	659
	660	// Is this the main of a generator?
[1c01c58]	661	auto param = isMainFor( func, AggregateDecl::Aggregate::Generator );
[427854b]	662	if(!param) return;
	663
	664	if(func->type->returnVals.size() != 0) SemanticError(func->location, "Generator main must return void");
	665
	666	in_generator = param;
	667	GuardValue(labels);
	668	labels.clear();
	669	}
	670
	671	DeclarationWithType * SuspendKeyword::postmutate( FunctionDecl * func ) {
	672	if( !func->statements ) return func; // Not the actual definition, don't do anything
	673	if( !in_generator ) return func; // Not in a generator, don't do anything
	674	if( labels.empty() ) return func; // Generator has no states, nothing to do, could throw a warning
	675
	676	// This is a generator main, we need to add the following code to the top
	677	// static void * __generator_labels[] = {&&s0, &&s1, ...};
	678	// goto * __generator_labels[gen.__generator_state];
	679	const auto & loc = func->location;
	680
	681	const auto first_label = gen.newLabel("generator");
	682
	683	// for each label add to declaration
	684	std::list<Initializer*> inits = { new SingleInit( new LabelAddressExpr( first_label ) ) };
	685	for(const auto & label : labels) {
	686	inits.push_back(
	687	new SingleInit(
	688	new LabelAddressExpr( label )
	689	)
	690	);
	691	}
	692	auto init = new ListInit(std::move(inits), noDesignators, true);
	693	labels.clear();
	694
	695	// create decl
	696	auto decl = new ObjectDecl(
	697	"__generator_labels",
	698	Type::StorageClasses( Type::Static ),
	699	LinkageSpec::AutoGen,
	700	nullptr,
	701	new ArrayType(
	702	Type::Qualifiers(),
	703	new PointerType(
	704	Type::Qualifiers(),
	705	new VoidType( Type::Qualifiers() )
	706	),
	707	nullptr,
	708	false, false
	709	),
	710	init
	711	);
	712
	713	// create the goto
	714	assert(in_generator);
	715
	716	auto go_decl = new ObjectDecl(
	717	"__generator_label",
	718	noStorageClasses,
	719	LinkageSpec::AutoGen,
	720	nullptr,
	721	new PointerType(
	722	Type::Qualifiers(),
	723	new VoidType( Type::Qualifiers() )
	724	),
	725	new SingleInit(
	726	new UntypedExpr(
	727	new NameExpr("?[?]"),
	728	{
	729	new NameExpr("__generator_labels"),
	730	new UntypedMemberExpr(
	731	new NameExpr("__generator_state"),
	732	new VariableExpr( in_generator )
	733	)
	734	}
	735	)
	736	)
	737	);
	738	go_decl->location = loc;
	739
	740	auto go = new BranchStmt(
	741	new VariableExpr( go_decl ),
	742	BranchStmt::Goto
	743	);
	744	go->location = loc;
	745	go->computedTarget->location = loc;
	746
	747	auto noop = new NullStmt({ first_label });
	748	noop->location = loc;
	749
	750	// wrap everything in a nice compound
	751	auto body = new CompoundStmt({
	752	new DeclStmt( decl ),
	753	new DeclStmt( go_decl ),
	754	go,
	755	noop,
	756	func->statements
	757	});
	758	body->location = loc;
	759	func->statements = body;
	760
	761	return func;
	762	}
	763
	764	Statement * SuspendKeyword::postmutate( SuspendStmt * stmt ) {
	765	SuspendStmt::Type type = stmt->type;
	766	if(type == SuspendStmt::None) {
	767	// This suspend has a implicit target, find it
	768	type = in_generator ? SuspendStmt::Generator : SuspendStmt::Coroutine;
	769	}
	770
	771	// Check that the target makes sense
	772	if(!in_generator && type == SuspendStmt::Generator) SemanticError( stmt->location, "'suspend generator' must be used inside main of generator type.");
	773
	774	// Act appropriately
	775	switch(type) {
	776	case SuspendStmt::Generator: return make_generator_suspend(stmt);
	777	case SuspendStmt::Coroutine: return make_coroutine_suspend(stmt);
	778	default: abort();
	779	}
	780	}
	781
	782	Statement * SuspendKeyword::make_generator_suspend( SuspendStmt * stmt ) {
	783	assert(in_generator);
	784	// Target code is :
	785	// gen.__generator_state = X;
	786	// { THEN }
	787	// return;
	788	// __gen_X:;
	789
	790	// Save the location and delete the old statement, we only need the location from this point on
	791	auto loc = stmt->location;
	792
	793	// Build the label and get its index
	794	auto label = make_label();
	795
	796	// Create the context saving statement
	797	auto save = new ExprStmt( new UntypedExpr(
	798	new NameExpr( "?=?" ),
	799	{
	800	new UntypedMemberExpr(
	801	new NameExpr("__generator_state"),
	802	new VariableExpr( in_generator )
	803	),
	804	new ConstantExpr(
	805	Constant::from_int( label.idx )
	806	)
	807	}
	808	));
	809	assert(save->expr);
	810	save->location = loc;
	811	stmtsToAddBefore.push_back( save );
	812
	813	// if we have a then add it here
	814	auto then = stmt->then;
	815	stmt->then = nullptr;
	816	delete stmt;
	817	if(then) stmtsToAddBefore.push_back( then );
	818
	819	// Create the return statement
	820	auto ret = new ReturnStmt( nullptr );
	821	ret->location = loc;
	822	stmtsToAddBefore.push_back( ret );
	823
	824	// Create the null statement with the created label
	825	auto noop = new NullStmt({ label.obj });
	826	noop->location = loc;
	827
	828	// Return the null statement to take the place of the previous statement
	829	return noop;
	830	}
	831
	832	Statement * SuspendKeyword::make_coroutine_suspend( SuspendStmt * stmt ) {
	833	if(stmt->then) SemanticError( stmt->location, "Compound statement following coroutines is not implemented.");
	834
	835	// Save the location and delete the old statement, we only need the location from this point on
	836	auto loc = stmt->location;
	837	delete stmt;
	838
	839	// Create the call expression
	840	if(!decl_suspend) SemanticError( loc, "suspend keyword applied to coroutines requires coroutines to be in scope, add #include <coroutine.hfa>\n");
	841	auto expr = new UntypedExpr( VariableExpr::functionPointer( decl_suspend ) );
[e6cfa8ff]	842	expr->location = loc;
[427854b]	843
	844	// Change this statement into a regular expr
	845	assert(expr);
	846	auto nstmt = new ExprStmt( expr );
[e6cfa8ff]	847	nstmt->location = loc;
[427854b]	848	return nstmt;
	849	}
	850
	851
[64adb03]	852	//=============================================================================================
	853	// Mutex keyword implementation
	854	//=============================================================================================
[97e3296]	855
[2065609]	856	void MutexKeyword::postvisit(FunctionDecl* decl) {
[102a58b]	857
[db4d8e3]	858	bool first = false;
	859	std::list<DeclarationWithType*> mutexArgs = findMutexArgs( decl, first );
[ab8c6a6]	860	bool const isDtor = CodeGen::isDestructor( decl->name );
[64adb03]	861
[ceedde6]	862	// Is this function relevant to monitors
	863	if( mutexArgs.empty() ) {
	864	// If this is the destructor for a monitor it must be mutex
	865	if(isDtor) {
	866	Type* ty = decl->get_functionType()->get_parameters().front()->get_type();
	867
	868	// If it's a copy, it's not a mutex
	869	ReferenceType* rty = dynamic_cast< ReferenceType * >( ty );
	870	if( ! rty ) return;
	871
	872	// If we are not pointing directly to a type, it's not a mutex
	873	Type* base = rty->get_base();
	874	if( dynamic_cast< ReferenceType * >( base ) ) return;
	875	if( dynamic_cast< PointerType * >( base ) ) return;
	876
	877	// Check if its a struct
	878	StructInstType * baseStruct = dynamic_cast< StructInstType * >( base );
	879	if( !baseStruct ) return;
	880
	881	// Check if its a monitor
	882	if(baseStruct->baseStruct->is_monitor() \|\| baseStruct->baseStruct->is_thread())
	883	SemanticError( decl, "destructors for structures declared as \"monitor\" must use mutex parameters\n" );
	884	}
	885	return;
	886	}
[549c006]	887
[ceedde6]	888	// Monitors can't be constructed with mutual exclusion
	889	if( CodeGen::isConstructor(decl->name) && !first ) SemanticError( decl, "constructors cannot have mutex parameters" );
[549c006]	890
[ceedde6]	891	// It makes no sense to have multiple mutex parameters for the destructor
[a16764a6]	892	if( isDtor && mutexArgs.size() != 1 ) SemanticError( decl, "destructors can only have 1 mutex argument" );
[549c006]	893
[ceedde6]	894	// Make sure all the mutex arguments are monitors
[64adb03]	895	for(auto arg : mutexArgs) {
	896	validate( arg );
	897	}
	898
[ceedde6]	899	// Check if we need to instrument the body
[64adb03]	900	CompoundStmt* body = decl->get_statements();
	901	if( ! body ) return;
	902
[ceedde6]	903	// Do we have the required headers
[a16764a6]	904	if( !monitor_decl \|\| !guard_decl \|\| !dtor_guard_decl )
[73abe95]	905	SemanticError( decl, "mutex keyword requires monitors to be in scope, add #include <monitor.hfa>\n" );
[b32ada31]	906
[ceedde6]	907	// Instrument the body
[ab8c6a6]	908	if ( isDtor && isThread( mutexArgs.front() ) ) {
	909	if( !thread_guard_decl ) {
	910	SemanticError( decl, "thread destructor requires threads to be in scope, add #include <thread.hfa>\n" );
	911	}
	912	addThreadDtorStatements( decl, body, mutexArgs );
	913	}
	914	else if ( isDtor ) {
	915	addDtorStatements( decl, body, mutexArgs );
[549c006]	916	}
	917	else {
[ab8c6a6]	918	addStatements( decl, body, mutexArgs );
[549c006]	919	}
[64adb03]	920	}
	921
[2065609]	922	void MutexKeyword::postvisit(StructDecl* decl) {
[102a58b]	923
[e84ab3d]	924	if( decl->name == "monitor$" && decl->body ) {
[9243cc91]	925	assert( !monitor_decl );
	926	monitor_decl = decl;
	927	}
[88d955f]	928	else if( decl->name == "monitor_guard_t" && decl->body ) {
[ef42b143]	929	assert( !guard_decl );
	930	guard_decl = decl;
	931	}
[88d955f]	932	else if( decl->name == "monitor_dtor_guard_t" && decl->body ) {
[549c006]	933	assert( !dtor_guard_decl );
	934	dtor_guard_decl = decl;
	935	}
[ab8c6a6]	936	else if( decl->name == "thread_dtor_guard_t" && decl->body ) {
	937	assert( !thread_guard_decl );
	938	thread_guard_decl = decl;
	939	}
[9243cc91]	940	}
	941
[6cebfef]	942	Statement * MutexKeyword::postmutate( MutexStmt * stmt ) {
	943	std::list<Statement *> stmtsForCtor;
	944	stmtsForCtor.push_back(stmt->stmt);
	945	CompoundStmt * body = new CompoundStmt( stmtsForCtor );
	946	addStatements( body, stmt->mutexObjs);
	947	return body;
	948	}
	949
[db4d8e3]	950	std::list<DeclarationWithType> MutexKeyword::findMutexArgs( FunctionDecl decl, bool & first ) {
[64adb03]	951	std::list<DeclarationWithType*> mutexArgs;
	952
[db4d8e3]	953	bool once = true;
[64adb03]	954	for( auto arg : decl->get_functionType()->get_parameters()) {
	955	//Find mutex arguments
	956	Type* ty = arg->get_type();
[615a096]	957	if( ! ty->get_mutex() ) continue;
[64adb03]	958
[db4d8e3]	959	if(once) {first = true;}
	960	once = false;
	961
[64adb03]	962	//Append it to the list
	963	mutexArgs.push_back( arg );
	964	}
	965
	966	return mutexArgs;
	967	}
	968
	969	void MutexKeyword::validate( DeclarationWithType * arg ) {
	970	Type* ty = arg->get_type();
	971
	972	//Makes sure it's not a copy
[870d1f0]	973	ReferenceType* rty = dynamic_cast< ReferenceType * >( ty );
[a16764a6]	974	if( ! rty ) SemanticError( arg, "Mutex argument must be of reference type " );
[64adb03]	975
	976	//Make sure the we are pointing directly to a type
[83a071f9]	977	Type* base = rty->get_base();
[a16764a6]	978	if( dynamic_cast< ReferenceType * >( base ) ) SemanticError( arg, "Mutex argument have exactly one level of indirection " );
	979	if( dynamic_cast< PointerType * >( base ) ) SemanticError( arg, "Mutex argument have exactly one level of indirection " );
[64adb03]	980
	981	//Make sure that typed isn't mutex
[a16764a6]	982	if( base->get_mutex() ) SemanticError( arg, "mutex keyword may only appear once per argument " );
[64adb03]	983	}
	984
[ab8c6a6]	985	void MutexKeyword::addDtorStatements( FunctionDecl* func, CompoundStmt * body, const std::list<DeclarationWithType * > & args ) {
[549c006]	986	Type * arg_type = args.front()->get_type()->clone();
	987	arg_type->set_mutex( false );
	988
	989	ObjectDecl * monitors = new ObjectDecl(
	990	"__monitor",
[ba3706f]	991	noStorageClasses,
[549c006]	992	LinkageSpec::Cforall,
	993	nullptr,
	994	new PointerType(
	995	noQualifiers,
	996	new StructInstType(
	997	noQualifiers,
	998	monitor_decl
	999	)
	1000	),
	1001	new SingleInit( new UntypedExpr(
	1002	new NameExpr( "get_monitor" ),
[b81fd95]	1003	{ new CastExpr( new VariableExpr( args.front() ), arg_type, false ) }
[549c006]	1004	))
	1005	);
	1006
	1007	assert(generic_func);
	1008
	1009	//in reverse order :
[2bf7ef6]	1010	// monitor_dtor_guard_t __guard = { __monitors, func };
[549c006]	1011	body->push_front(
[ba3706f]	1012	new DeclStmt( new ObjectDecl(
[549c006]	1013	"__guard",
[ba3706f]	1014	noStorageClasses,
[549c006]	1015	LinkageSpec::Cforall,
	1016	nullptr,
	1017	new StructInstType(
	1018	noQualifiers,
	1019	dtor_guard_decl
	1020	),
	1021	new ListInit(
	1022	{
	1023	new SingleInit( new AddressExpr( new VariableExpr( monitors ) ) ),
[77a2994]	1024	new SingleInit( new CastExpr( new VariableExpr( func ), generic_func->clone(), false ) ),
	1025	new SingleInit( new ConstantExpr( Constant::from_bool( false ) ) )
[549c006]	1026	},
	1027	noDesignators,
	1028	true
	1029	)
	1030	))
	1031	);
	1032
[e84ab3d]	1033	//monitor$ * __monitors[] = { get_monitor(a), get_monitor(b) };
[ab8c6a6]	1034	body->push_front( new DeclStmt( monitors ) );
	1035	}
	1036
	1037	void MutexKeyword::addThreadDtorStatements(
	1038	FunctionDecl, CompoundStmt body,
	1039	const std::list<DeclarationWithType * > & args ) {
	1040	assert( args.size() == 1 );
	1041	DeclarationWithType * arg = args.front();
	1042	Type * arg_type = arg->get_type()->clone();
	1043	assert( arg_type->get_mutex() );
	1044	arg_type->set_mutex( false );
	1045
	1046	// thread_dtor_guard_t __guard = { this, intptr( 0 ) };
	1047	body->push_front(
	1048	new DeclStmt( new ObjectDecl(
	1049	"__guard",
	1050	noStorageClasses,
	1051	LinkageSpec::Cforall,
	1052	nullptr,
	1053	new StructInstType(
	1054	noQualifiers,
	1055	thread_guard_decl
	1056	),
	1057	new ListInit(
	1058	{
	1059	new SingleInit( new CastExpr( new VariableExpr( arg ), arg_type ) ),
	1060	new SingleInit( new UntypedExpr(
	1061	new NameExpr( "intptr" ), {
	1062	new ConstantExpr( Constant::from_int( 0 ) ),
	1063	}
	1064	) ),
	1065	},
	1066	noDesignators,
	1067	true
	1068	)
	1069	))
	1070	);
[549c006]	1071	}
	1072
[6cebfef]	1073	void MutexKeyword::addStatements( CompoundStmt * body, const std::list<Expression * > & args ) {
	1074	ObjectDecl * monitors = new ObjectDecl(
	1075	"__monitors",
	1076	noStorageClasses,
	1077	LinkageSpec::Cforall,
	1078	nullptr,
	1079	new ArrayType(
	1080	noQualifiers,
	1081	new PointerType(
	1082	noQualifiers,
	1083	new StructInstType(
	1084	noQualifiers,
	1085	monitor_decl
	1086	)
	1087	),
	1088	new ConstantExpr( Constant::from_ulong( args.size() ) ),
	1089	false,
	1090	false
	1091	),
	1092	new ListInit(
	1093	map_range < std::list<Initializer> > ( args, [](Expression var ){
	1094	return new SingleInit( new UntypedExpr(
	1095	new NameExpr( "get_monitor" ),
	1096	{ var }
	1097	) );
	1098	})
	1099	)
	1100	);
	1101
	1102	// in reverse order :
	1103	// monitor_guard_t __guard = { __monitors, # };
	1104	body->push_front(
	1105	new DeclStmt( new ObjectDecl(
	1106	"__guard",
	1107	noStorageClasses,
	1108	LinkageSpec::Cforall,
	1109	nullptr,
	1110	new StructInstType(
	1111	noQualifiers,
	1112	guard_decl
	1113	),
	1114	new ListInit(
	1115	{
	1116	new SingleInit( new VariableExpr( monitors ) ),
	1117	new SingleInit( new ConstantExpr( Constant::from_ulong( args.size() ) ) )
	1118	},
	1119	noDesignators,
	1120	true
	1121	)
	1122	))
	1123	);
	1124
	1125	//monitor$ * __monitors[] = { get_monitor(a), get_monitor(b) };
	1126	body->push_front( new DeclStmt( monitors) );
	1127	}
	1128
[ab8c6a6]	1129	void MutexKeyword::addStatements( FunctionDecl* func, CompoundStmt * body, const std::list<DeclarationWithType * > & args ) {
[9243cc91]	1130	ObjectDecl * monitors = new ObjectDecl(
	1131	"__monitors",
[ba3706f]	1132	noStorageClasses,
[9243cc91]	1133	LinkageSpec::Cforall,
	1134	nullptr,
	1135	new ArrayType(
	1136	noQualifiers,
	1137	new PointerType(
	1138	noQualifiers,
	1139	new StructInstType(
	1140	noQualifiers,
	1141	monitor_decl
	1142	)
	1143	),
	1144	new ConstantExpr( Constant::from_ulong( args.size() ) ),
	1145	false,
	1146	false
	1147	),
	1148	new ListInit(
[bd41764]	1149	map_range < std::list<Initializer> > ( args, [](DeclarationWithType var ){
[cb0e6de]	1150	Type * type = var->get_type()->clone();
	1151	type->set_mutex( false );
[9243cc91]	1152	return new SingleInit( new UntypedExpr(
	1153	new NameExpr( "get_monitor" ),
[b81fd95]	1154	{ new CastExpr( new VariableExpr( var ), type, false ) }
[9243cc91]	1155	) );
	1156	})
	1157	)
	1158	);
	1159
[97e3296]	1160	assert(generic_func);
	1161
[2bf7ef6]	1162	// in reverse order :
[97e3296]	1163	// monitor_guard_t __guard = { __monitors, #, func };
[64adb03]	1164	body->push_front(
[ba3706f]	1165	new DeclStmt( new ObjectDecl(
[64adb03]	1166	"__guard",
[ba3706f]	1167	noStorageClasses,
[64adb03]	1168	LinkageSpec::Cforall,
	1169	nullptr,
	1170	new StructInstType(
	1171	noQualifiers,
[ef42b143]	1172	guard_decl
[64adb03]	1173	),
	1174	new ListInit(
	1175	{
[9243cc91]	1176	new SingleInit( new VariableExpr( monitors ) ),
[97e3296]	1177	new SingleInit( new ConstantExpr( Constant::from_ulong( args.size() ) ) ),
[b81fd95]	1178	new SingleInit( new CastExpr( new VariableExpr( func ), generic_func->clone(), false ) )
[ef42b143]	1179	},
	1180	noDesignators,
	1181	true
[64adb03]	1182	)
	1183	))
	1184	);
	1185
[e84ab3d]	1186	//monitor$ * __monitors[] = { get_monitor(a), get_monitor(b) };
[ba3706f]	1187	body->push_front( new DeclStmt( monitors) );
[64adb03]	1188	}
[bd4d011]	1189
	1190	//=============================================================================================
	1191	// General entry routine
	1192	//=============================================================================================
[549c006]	1193	void ThreadStarter::previsit( StructDecl * decl ) {
[e84ab3d]	1194	if( decl->name == "thread$" && decl->body ) {
[549c006]	1195	assert( !thread_decl );
	1196	thread_decl = decl;
	1197	}
	1198	}
	1199
[2065609]	1200	void ThreadStarter::postvisit(FunctionDecl * decl) {
[9f5ecf5]	1201	if( ! CodeGen::isConstructor(decl->name) ) return;
[bd4d011]	1202
[549c006]	1203	Type * typeof_this = InitTweak::getTypeofThis(decl->type);
	1204	StructInstType * ctored_type = dynamic_cast< StructInstType * >( typeof_this );
	1205	if( ctored_type && ctored_type->baseStruct == thread_decl ) {
	1206	thread_ctor_seen = true;
	1207	}
	1208
[bd4d011]	1209	DeclarationWithType * param = decl->get_functionType()->get_parameters().front();
[ce8c12f]	1210	auto type = dynamic_cast< StructInstType * >( InitTweak::getPointerBase( param->get_type() ) );
[bd4d011]	1211	if( type && type->get_baseStruct()->is_thread() ) {
[549c006]	1212	if( !thread_decl \|\| !thread_ctor_seen ) {
[73abe95]	1213	SemanticError( type->get_baseStruct()->location, "thread keyword requires threads to be in scope, add #include <thread.hfa>");
[549c006]	1214	}
	1215
[bd4d011]	1216	addStartStatement( decl, param );
	1217	}
	1218	}
	1219
	1220	void ThreadStarter::addStartStatement( FunctionDecl * decl, DeclarationWithType * param ) {
	1221	CompoundStmt * stmt = decl->get_statements();
	1222
	1223	if( ! stmt ) return;
	1224
[bf2438c]	1225	stmt->push_back(
[bd4d011]	1226	new ExprStmt(
	1227	new UntypedExpr(
	1228	new NameExpr( "__thrd_start" ),
[09f357ec]	1229	{ new VariableExpr( param ), new NameExpr("main") }
[bd4d011]	1230	)
	1231	)
	1232	);
	1233	}
[68fe077a]	1234	};
[6b0b624]	1235
	1236	// Local Variables: //
	1237	// mode: c //
	1238	// tab-width: 4 //
	1239	// End: //
[1c01c58]	1240

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