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source: src/Concurrency/Keywords.cc@ b738974

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ADT ast-experimental pthread-emulation qualifiedEnum

Last change on this file since b738974 was 080d2d7, checked in by caparsons <caparson@…>, 4 years ago
added changes to mutex stmt pass
Property mode set to `100644`
File size: 41.8 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 );
[af67ee1]	95	void addLockUnlockRoutines( StructDecl * );
[bcda04c]	96
	97	virtual bool is_target( StructDecl * decl ) = 0;
	98
[9a705dc8]	99	Expression * postmutate( KeywordCastExpr * cast );
	100
[bcda04c]	101	private:
	102	const std::string type_name;
	103	const std::string field_name;
	104	const std::string getter_name;
	105	const std::string context_error;
[69c5c00]	106	const std::string exception_name;
[ecfd758]	107	const std::string typeid_name;
[1c01c58]	108	const std::string vtable_name;
[bd4d011]	109	bool needs_main;
[312029a]	110	AggregateDecl::Aggregate cast_target;
[bcda04c]	111
[6c3a5ac1]	112	StructDecl * type_decl = nullptr;
	113	FunctionDecl * dtor_decl = nullptr;
[69c5c00]	114	StructDecl * except_decl = nullptr;
[ecfd758]	115	StructDecl * typeid_decl = nullptr;
[1c01c58]	116	StructDecl * vtable_decl = nullptr;
[bcda04c]	117	};
	118
	119
[64adb03]	120	//-----------------------------------------------------------------------------
	121	//Handles thread type declarations :
	122	// thread Mythread { struct MyThread {
	123	// int data; int data;
	124	// a_struct_t more_data; a_struct_t more_data;
[e84ab3d]	125	// => thread$ __thrd_d;
[64adb03]	126	// }; };
[e84ab3d]	127	// static inline thread$ * get_thread( MyThread * this ) { return &this->__thrd_d; }
[64adb03]	128	//
[bcda04c]	129	class ThreadKeyword final : public ConcurrentSueKeyword {
[64adb03]	130	public:
	131
[bcda04c]	132	ThreadKeyword() : ConcurrentSueKeyword(
[e84ab3d]	133	"thread$",
[bcda04c]	134	"__thrd",
	135	"get_thread",
[6c3a5ac1]	136	"thread keyword requires threads to be in scope, add #include <thread.hfa>\n",
[ab8c6a6]	137	"ThreadCancelled",
[9a705dc8]	138	true,
[312029a]	139	AggregateDecl::Thread
[bcda04c]	140	)
	141	{}
	142
	143	virtual ~ThreadKeyword() {}
	144
	145	virtual bool is_target( StructDecl * decl ) override final { return decl->is_thread(); }
	146
	147	static void implement( std::list< Declaration * > & translationUnit ) {
[2065609]	148	PassVisitor< ThreadKeyword > impl;
[9a705dc8]	149	mutateAll( translationUnit, impl );
[bcda04c]	150	}
[64adb03]	151	};
	152
	153	//-----------------------------------------------------------------------------
	154	//Handles coroutine type declarations :
	155	// coroutine MyCoroutine { struct MyCoroutine {
	156	// int data; int data;
	157	// a_struct_t more_data; a_struct_t more_data;
[e84ab3d]	158	// => coroutine$ __cor_d;
[64adb03]	159	// }; };
[e84ab3d]	160	// static inline coroutine$ * get_coroutine( MyCoroutine * this ) { return &this->__cor_d; }
[64adb03]	161	//
[bcda04c]	162	class CoroutineKeyword final : public ConcurrentSueKeyword {
[64adb03]	163	public:
	164
[bcda04c]	165	CoroutineKeyword() : ConcurrentSueKeyword(
[e84ab3d]	166	"coroutine$",
[bcda04c]	167	"__cor",
	168	"get_coroutine",
[6c3a5ac1]	169	"coroutine keyword requires coroutines to be in scope, add #include <coroutine.hfa>\n",
[1c01c58]	170	"CoroutineCancelled",
[9a705dc8]	171	true,
[312029a]	172	AggregateDecl::Coroutine
[bcda04c]	173	)
	174	{}
[b32ada31]	175
[bcda04c]	176	virtual ~CoroutineKeyword() {}
	177
	178	virtual bool is_target( StructDecl * decl ) override final { return decl->is_coroutine(); }
[b32ada31]	179
	180	static void implement( std::list< Declaration * > & translationUnit ) {
[2065609]	181	PassVisitor< CoroutineKeyword > impl;
[9a705dc8]	182	mutateAll( translationUnit, impl );
[b32ada31]	183	}
[64adb03]	184	};
	185
[427854b]	186
	187
[64adb03]	188	//-----------------------------------------------------------------------------
	189	//Handles monitor type declarations :
	190	// monitor MyMonitor { struct MyMonitor {
	191	// int data; int data;
	192	// a_struct_t more_data; a_struct_t more_data;
[e84ab3d]	193	// => monitor$ __mon_d;
[64adb03]	194	// }; };
[e84ab3d]	195	// static inline monitor$ * get_coroutine( MyMonitor * this ) { return &this->__cor_d; }
[64adb03]	196	//
[bcda04c]	197	class MonitorKeyword final : public ConcurrentSueKeyword {
[64adb03]	198	public:
	199
[bcda04c]	200	MonitorKeyword() : ConcurrentSueKeyword(
[e84ab3d]	201	"monitor$",
[bcda04c]	202	"__mon",
	203	"get_monitor",
[6c3a5ac1]	204	"monitor keyword requires monitors to be in scope, add #include <monitor.hfa>\n",
[1c01c58]	205	"",
[9a705dc8]	206	false,
[312029a]	207	AggregateDecl::Monitor
[bcda04c]	208	)
	209	{}
	210
	211	virtual ~MonitorKeyword() {}
	212
	213	virtual bool is_target( StructDecl * decl ) override final { return decl->is_monitor(); }
	214
	215	static void implement( std::list< Declaration * > & translationUnit ) {
[2065609]	216	PassVisitor< MonitorKeyword > impl;
[9a705dc8]	217	mutateAll( translationUnit, impl );
[bcda04c]	218	}
[64adb03]	219	};
	220
[427854b]	221	//-----------------------------------------------------------------------------
	222	//Handles generator type declarations :
	223	// generator MyGenerator { struct MyGenerator {
	224	// int data; int data;
	225	// a_struct_t more_data; a_struct_t more_data;
	226	// => int __gen_next;
	227	// }; };
	228	//
	229	class GeneratorKeyword final : public ConcurrentSueKeyword {
	230	public:
	231
	232	GeneratorKeyword() : ConcurrentSueKeyword(
[e84ab3d]	233	"generator$",
[427854b]	234	"__generator_state",
	235	"get_generator",
[e84ab3d]	236	"Unable to find builtin type generator$\n",
[1c01c58]	237	"",
[427854b]	238	true,
	239	AggregateDecl::Generator
	240	)
	241	{}
	242
	243	virtual ~GeneratorKeyword() {}
	244
	245	virtual bool is_target( StructDecl * decl ) override final { return decl->is_generator(); }
	246
	247	static void implement( std::list< Declaration * > & translationUnit ) {
	248	PassVisitor< GeneratorKeyword > impl;
	249	mutateAll( translationUnit, impl );
	250	}
	251	};
	252
	253
	254	//-----------------------------------------------------------------------------
	255	class SuspendKeyword final : public WithStmtsToAdd, public WithGuards {
	256	public:
	257	SuspendKeyword() = default;
	258	virtual ~SuspendKeyword() = default;
	259
	260	void premutate( FunctionDecl * );
	261	DeclarationWithType * postmutate( FunctionDecl * );
	262
	263	Statement * postmutate( SuspendStmt * );
	264
	265	static void implement( std::list< Declaration * > & translationUnit ) {
	266	PassVisitor< SuspendKeyword > impl;
	267	mutateAll( translationUnit, impl );
	268	}
	269
	270	private:
	271	bool is_real_suspend( FunctionDecl * );
	272
	273	Statement * make_generator_suspend( SuspendStmt * );
	274	Statement * make_coroutine_suspend( SuspendStmt * );
	275
	276	struct LabelPair {
	277	Label obj;
	278	int idx;
	279	};
	280
	281	LabelPair make_label() {
	282	labels.push_back( gen.newLabel("generator") );
	283	return { labels.back(), int(labels.size()) };
	284	}
	285
	286	DeclarationWithType * in_generator = nullptr;
	287	FunctionDecl * decl_suspend = nullptr;
	288	std::vector<Label> labels;
	289	ControlStruct::LabelGenerator & gen = *ControlStruct::LabelGenerator::getGenerator();
	290	};
	291
[64adb03]	292	//-----------------------------------------------------------------------------
	293	//Handles mutex routines definitions :
	294	// void foo( A * mutex a, B * mutex b, int i ) { void foo( A * a, B * b, int i ) {
[e84ab3d]	295	// monitor$ * __monitors[] = { get_monitor(a), get_monitor(b) };
[64adb03]	296	// monitor_guard_t __guard = { __monitors, 2 };
	297	// /Some code/ => /Some code/
	298	// } }
	299	//
[2065609]	300	class MutexKeyword final {
[64adb03]	301	public:
	302
[2065609]	303	void postvisit( FunctionDecl * decl );
	304	void postvisit( StructDecl * decl );
[6cebfef]	305	Statement * postmutate( MutexStmt * stmt );
[64adb03]	306
[db4d8e3]	307	std::list<DeclarationWithType> findMutexArgs( FunctionDecl, bool & first );
[64adb03]	308	void validate( DeclarationWithType * );
[ab8c6a6]	309	void addDtorStatements( FunctionDecl* func, CompoundStmt , const std::list<DeclarationWithType > &);
	310	void addStatements( FunctionDecl* func, CompoundStmt , const std::list<DeclarationWithType > &);
[6cebfef]	311	void addStatements( CompoundStmt * body, const std::list<Expression * > & args );
[ab8c6a6]	312	void addThreadDtorStatements( FunctionDecl* func, CompoundStmt * body, const std::list<DeclarationWithType * > & args );
[64adb03]	313
	314	static void implement( std::list< Declaration * > & translationUnit ) {
[2065609]	315	PassVisitor< MutexKeyword > impl;
[64adb03]	316	acceptAll( translationUnit, impl );
[6cebfef]	317	mutateAll( translationUnit, impl );
[64adb03]	318	}
[9243cc91]	319
	320	private:
	321	StructDecl* monitor_decl = nullptr;
[ef42b143]	322	StructDecl* guard_decl = nullptr;
[549c006]	323	StructDecl* dtor_guard_decl = nullptr;
[ab8c6a6]	324	StructDecl* thread_guard_decl = nullptr;
[af67ee1]	325	StructDecl* lock_guard_decl = nullptr;
[97e3296]	326
	327	static std::unique_ptr< Type > generic_func;
[64adb03]	328	};
	329
[97e3296]	330	std::unique_ptr< Type > MutexKeyword::generic_func = std::unique_ptr< Type >(
	331	new FunctionType(
	332	noQualifiers,
	333	true
	334	)
	335	);
	336
[bd4d011]	337	//-----------------------------------------------------------------------------
	338	//Handles mutex routines definitions :
	339	// void foo( A * mutex a, B * mutex b, int i ) { void foo( A * a, B * b, int i ) {
[e84ab3d]	340	// monitor$ * __monitors[] = { get_monitor(a), get_monitor(b) };
[bd4d011]	341	// monitor_guard_t __guard = { __monitors, 2 };
	342	// /Some code/ => /Some code/
	343	// } }
	344	//
[2065609]	345	class ThreadStarter final {
[bd4d011]	346	public:
	347
[2065609]	348	void postvisit( FunctionDecl * decl );
[549c006]	349	void previsit ( StructDecl * decl );
[bd4d011]	350
	351	void addStartStatement( FunctionDecl * decl, DeclarationWithType * param );
	352
	353	static void implement( std::list< Declaration * > & translationUnit ) {
[2065609]	354	PassVisitor< ThreadStarter > impl;
[bd4d011]	355	acceptAll( translationUnit, impl );
	356	}
[549c006]	357
	358	private :
	359	bool thread_ctor_seen = false;
	360	StructDecl * thread_decl = nullptr;
[bd4d011]	361	};
	362
[64adb03]	363	//=============================================================================================
	364	// General entry routine
	365	//=============================================================================================
	366	void applyKeywords( std::list< Declaration * > & translationUnit ) {
	367	ThreadKeyword ::implement( translationUnit );
	368	CoroutineKeyword ::implement( translationUnit );
	369	MonitorKeyword ::implement( translationUnit );
[427854b]	370	GeneratorKeyword ::implement( translationUnit );
	371	SuspendKeyword ::implement( translationUnit );
[bcda04c]	372	}
	373
	374	void implementMutexFuncs( std::list< Declaration * > & translationUnit ) {
[64adb03]	375	MutexKeyword ::implement( translationUnit );
	376	}
	377
[bcda04c]	378	void implementThreadStarter( std::list< Declaration * > & translationUnit ) {
[bd4d011]	379	ThreadStarter ::implement( translationUnit );
[bcda04c]	380	}
	381
[b32ada31]	382	//=============================================================================================
[bcda04c]	383	// Generic keyword implementation
[b32ada31]	384	//=============================================================================================
[2db79e5]	385	void fixupGenerics(FunctionType * func, StructDecl * decl) {
	386	cloneAll(decl->parameters, func->forall);
	387	for ( TypeDecl * td : func->forall ) {
	388	strict_dynamic_cast<StructInstType*>(
	389	func->parameters.front()->get_type()->stripReferences()
	390	)->parameters.push_back(
	391	new TypeExpr( new TypeInstType( noQualifiers, td->name, td ) )
	392	);
	393	}
	394	}
	395
[9a705dc8]	396	Declaration * ConcurrentSueKeyword::postmutate(StructDecl * decl) {
[9f5ecf5]	397	if( decl->name == type_name && decl->body ) {
[bcda04c]	398	assert( !type_decl );
	399	type_decl = decl;
[b32ada31]	400	}
[bcda04c]	401	else if ( is_target(decl) ) {
[b32ada31]	402	handle( decl );
	403	}
[69c5c00]	404	else if ( !except_decl && exception_name == decl->name && decl->body ) {
	405	except_decl = decl;
	406	}
[ecfd758]	407	else if ( !typeid_decl && typeid_name == decl->name && decl->body ) {
	408	typeid_decl = decl;
	409	}
[1c01c58]	410	else if ( !vtable_decl && vtable_name == decl->name && decl->body ) {
	411	vtable_decl = decl;
	412	}
	413	// Might be able to get ride of is target.
	414	assert( is_target(decl) == (cast_target == decl->kind) );
[9a705dc8]	415	return decl;
[b32ada31]	416	}
	417
[6c3a5ac1]	418	DeclarationWithType * ConcurrentSueKeyword::postmutate( FunctionDecl * decl ) {
[1c01c58]	419	if ( type_decl && isDestructorFor( decl, type_decl ) )
	420	dtor_decl = decl;
[b583113]	421	else if ( vtable_name.empty() \|\| !decl->has_body() )
[43cedfb1]	422	;
[1c01c58]	423	else if ( auto param = isMainFor( decl, cast_target ) ) {
[a494d105]	424	if ( !vtable_decl ) {
	425	SemanticError( decl, context_error );
	426	}
[1c01c58]	427	// Should be safe because of isMainFor.
	428	StructInstType * struct_type = static_cast<StructInstType *>(
	429	static_cast<ReferenceType *>( param->get_type() )->base );
	430	assert( struct_type );
	431
[69c5c00]	432	std::list< Expression * > poly_args = { new TypeExpr( struct_type->clone() ) };
	433	ObjectDecl * vtable_object = Virtual::makeVtableInstance(
[b583113]	434	"_default_vtable_object_declaration",
[69c5c00]	435	vtable_decl->makeInst( poly_args ), struct_type, nullptr );
	436	declsToAddAfter.push_back( vtable_object );
[b583113]	437	declsToAddAfter.push_back(
	438	new ObjectDecl(
	439	Virtual::concurrentDefaultVTableName(),
[67b421c]	440	noStorageClasses,
[b583113]	441	LinkageSpec::Cforall,
	442	/* bitfieldWidth */ nullptr,
	443	new ReferenceType( Type::Const, vtable_object->type->clone() ),
	444	new SingleInit( new VariableExpr( vtable_object ) )
	445	)
	446	);
[69c5c00]	447	declsToAddAfter.push_back( Virtual::makeGetExceptionFunction(
	448	vtable_object, except_decl->makeInst( std::move( poly_args ) )
	449	) );
[1c01c58]	450	}
[6c3a5ac1]	451
	452	return decl;
	453	}
	454
[9a705dc8]	455	Expression * ConcurrentSueKeyword::postmutate( KeywordCastExpr * cast ) {
	456	if ( cast_target == cast->target ) {
[e84ab3d]	457	// convert (thread &)t to (thread$ &)*get_thread(t), etc.
[9a705dc8]	458	if( !type_decl ) SemanticError( cast, context_error );
[6c3a5ac1]	459	if( !dtor_decl ) SemanticError( cast, context_error );
[3b0c8cb]	460	assert( cast->result == nullptr );
	461	cast->set_result( new ReferenceType( noQualifiers, new StructInstType( noQualifiers, type_decl ) ) );
	462	cast->concrete_target.field = field_name;
	463	cast->concrete_target.getter = getter_name;
[9a705dc8]	464	}
	465	return cast;
	466	}
	467
[bcda04c]	468	void ConcurrentSueKeyword::handle( StructDecl * decl ) {
[9f5ecf5]	469	if( ! decl->body ) return;
[b32ada31]	470
[a16764a6]	471	if( !type_decl ) SemanticError( decl, context_error );
[6c3a5ac1]	472	if( !dtor_decl ) SemanticError( decl, context_error );
[b32ada31]	473
[ecfd758]	474	if ( !exception_name.empty() ) {
	475	if( !typeid_decl ) SemanticError( decl, context_error );
	476	if( !vtable_decl ) SemanticError( decl, context_error );
	477
	478	addTypeId( decl );
	479	addVtableForward( decl );
	480	}
[bcda04c]	481	FunctionDecl * func = forwardDeclare( decl );
	482	ObjectDecl * field = addField( decl );
[af67ee1]	483
	484	// add get_.* routine
[2f9a722]	485	addRoutines( field, func );
[af67ee1]	486	// add lock/unlock routines to monitors for use by mutex stmt
	487	addLockUnlockRoutines( decl );
[b32ada31]	488	}
	489
[ecfd758]	490	void ConcurrentSueKeyword::addTypeId( StructDecl * decl ) {
	491	assert( typeid_decl );
	492	StructInstType typeid_type( Type::Const, typeid_decl );
	493	typeid_type.parameters.push_back( new TypeExpr(
	494	new StructInstType( noQualifiers, decl )
[69c5c00]	495	) );
[ecfd758]	496	declsToAddBefore.push_back( Virtual::makeTypeIdInstance( &typeid_type ) );
	497	}
	498
	499	void ConcurrentSueKeyword::addVtableForward( StructDecl * decl ) {
	500	assert( vtable_decl );
	501	std::list< Expression * > poly_args = {
	502	new TypeExpr( new StructInstType( noQualifiers, decl ) ),
	503	};
	504	declsToAddBefore.push_back( Virtual::makeGetExceptionForward(
	505	vtable_decl->makeInst( poly_args ),
	506	except_decl->makeInst( poly_args )
	507	) );
[b583113]	508	ObjectDecl * vtable_object = Virtual::makeVtableForward(
	509	"_default_vtable_object_declaration",
	510	vtable_decl->makeInst( move( poly_args ) ) );
	511	declsToAddBefore.push_back( vtable_object );
[8edbe40]	512	declsToAddBefore.push_back(
[b583113]	513	new ObjectDecl(
	514	Virtual::concurrentDefaultVTableName(),
[67b421c]	515	Type::StorageClasses( Type::Extern ),
[b583113]	516	LinkageSpec::Cforall,
	517	/* bitfieldWidth */ nullptr,
	518	new ReferenceType( Type::Const, vtable_object->type->clone() ),
	519	/* init */ nullptr
	520	)
	521	);
[1c01c58]	522	}
	523
[bcda04c]	524	FunctionDecl * ConcurrentSueKeyword::forwardDeclare( StructDecl * decl ) {
	525
	526	StructDecl * forward = decl->clone();
	527	forward->set_body( false );
	528	deleteAll( forward->get_members() );
	529	forward->get_members().clear();
	530
[bd4d011]	531	FunctionType * get_type = new FunctionType( noQualifiers, false );
[bcda04c]	532	ObjectDecl * this_decl = new ObjectDecl(
	533	"this",
[ba3706f]	534	noStorageClasses,
[b32ada31]	535	LinkageSpec::Cforall,
	536	nullptr,
[83a071f9]	537	new ReferenceType(
[b32ada31]	538	noQualifiers,
[bcda04c]	539	new StructInstType(
	540	noQualifiers,
	541	decl
	542	)
[b32ada31]	543	),
	544	nullptr
	545	);
	546
[2db79e5]	547	get_type->get_parameters().push_back( this_decl->clone() );
[bd4d011]	548	get_type->get_returnVals().push_back(
[e04b636]	549	new ObjectDecl(
	550	"ret",
[ba3706f]	551	noStorageClasses,
[e04b636]	552	LinkageSpec::Cforall,
	553	nullptr,
	554	new PointerType(
	555	noQualifiers,
	556	new StructInstType(
	557	noQualifiers,
[bcda04c]	558	type_decl
[e04b636]	559	)
	560	),
	561	nullptr
	562	)
	563	);
[2db79e5]	564	fixupGenerics(get_type, decl);
[b32ada31]	565
[bcda04c]	566	FunctionDecl * get_decl = new FunctionDecl(
	567	getter_name,
	568	Type::Static,
	569	LinkageSpec::Cforall,
[bd4d011]	570	get_type,
[bcda04c]	571	nullptr,
[a8078ee]	572	{ new Attribute("const") },
[bcda04c]	573	Type::Inline
	574	);
	575
[bd4d011]	576	FunctionDecl * main_decl = nullptr;
	577
	578	if( needs_main ) {
	579	FunctionType * main_type = new FunctionType( noQualifiers, false );
[bf2438c]	580
[bd4d011]	581	main_type->get_parameters().push_back( this_decl->clone() );
	582
	583	main_decl = new FunctionDecl(
	584	"main",
[ba3706f]	585	noStorageClasses,
[bd4d011]	586	LinkageSpec::Cforall,
	587	main_type,
	588	nullptr
	589	);
[2db79e5]	590	fixupGenerics(main_type, decl);
[bd4d011]	591	}
	592
[2db79e5]	593	delete this_decl;
	594
[2065609]	595	declsToAddBefore.push_back( forward );
	596	if( needs_main ) declsToAddBefore.push_back( main_decl );
	597	declsToAddBefore.push_back( get_decl );
[bcda04c]	598
	599	return get_decl;
	600	}
	601
	602	ObjectDecl * ConcurrentSueKeyword::addField( StructDecl * decl ) {
	603	ObjectDecl * field = new ObjectDecl(
	604	field_name,
[ba3706f]	605	noStorageClasses,
[bcda04c]	606	LinkageSpec::Cforall,
	607	nullptr,
	608	new StructInstType(
	609	noQualifiers,
	610	type_decl
	611	),
	612	nullptr
	613	);
	614
	615	decl->get_members().push_back( field );
	616
	617	return field;
	618	}
	619
[af67ee1]	620	// This function adds the get_.* routine body for coroutines, monitors etc
	621	// after their corresponding struct has been made
[2f9a722]	622	void ConcurrentSueKeyword::addRoutines( ObjectDecl * field, FunctionDecl * func ) {
[ba3706f]	623	CompoundStmt * statement = new CompoundStmt();
[bf2438c]	624	statement->push_back(
[b32ada31]	625	new ReturnStmt(
[e04b636]	626	new AddressExpr(
[bcda04c]	627	new MemberExpr(
	628	field,
[2db79e5]	629	new CastExpr(
	630	new VariableExpr( func->get_functionType()->get_parameters().front() ),
[b81fd95]	631	func->get_functionType()->get_parameters().front()->get_type()->stripReferences()->clone(),
	632	false
[2db79e5]	633	)
[e04b636]	634	)
[b32ada31]	635	)
	636	)
	637	);
	638
[bcda04c]	639	FunctionDecl * get_decl = func->clone();
	640
	641	get_decl->set_statements( statement );
[e04b636]	642
	643	declsToAddAfter.push_back( get_decl );
[427854b]	644	}
	645
[af67ee1]	646	// Generates lock/unlock routines for monitors to be used by mutex stmts
	647	void ConcurrentSueKeyword::addLockUnlockRoutines( StructDecl * decl ) {
	648	// this routine will be called for all ConcurrentSueKeyword children so only continue if we are a monitor
	649	if ( !decl->is_monitor() ) return;
	650
	651	FunctionType * lock_fn_type = new FunctionType( noQualifiers, false );
	652	FunctionType * unlock_fn_type = new FunctionType( noQualifiers, false );
	653
	654	// create this ptr parameter for both routines
	655	ObjectDecl * this_decl = new ObjectDecl(
	656	"this",
	657	noStorageClasses,
	658	LinkageSpec::Cforall,
	659	nullptr,
	660	new ReferenceType(
	661	noQualifiers,
	662	new StructInstType(
	663	noQualifiers,
	664	decl
	665	)
	666	),
	667	nullptr
	668	);
	669
	670	lock_fn_type->get_parameters().push_back( this_decl->clone() );
	671	unlock_fn_type->get_parameters().push_back( this_decl->clone() );
[5b7c8b5]	672	fixupGenerics(lock_fn_type, decl);
	673	fixupGenerics(unlock_fn_type, decl);
[af67ee1]	674
	675	delete this_decl;
	676
	677
	678	//////////////////////////////////////////////////////////////////////
	679	// The following generates this lock routine for all monitors
	680	/*
	681	void lock (monitor_t & this) {
	682	lock(get_monitor(this));
	683	}
	684	*/
	685	FunctionDecl * lock_decl = new FunctionDecl(
	686	"lock",
	687	Type::Static,
	688	LinkageSpec::Cforall,
	689	lock_fn_type,
	690	nullptr,
	691	{ },
	692	Type::Inline
	693	);
	694
	695	UntypedExpr * get_monitor_lock = new UntypedExpr (
	696	new NameExpr( "get_monitor" ),
	697	{ new VariableExpr( lock_fn_type->get_parameters().front() ) }
	698	);
	699
	700	CompoundStmt * lock_statement = new CompoundStmt();
	701	lock_statement->push_back(
	702	new ExprStmt(
	703	new UntypedExpr (
	704	new NameExpr( "lock" ),
	705	{
	706	get_monitor_lock
	707	}
	708	)
	709	)
	710	);
	711	lock_decl->set_statements( lock_statement );
	712
	713	//////////////////////////////////////////////////////////////////
	714	// The following generates this routine for all monitors
	715	/*
	716	void unlock (monitor_t & this) {
	717	unlock(get_monitor(this));
	718	}
	719	*/
	720	FunctionDecl * unlock_decl = new FunctionDecl(
	721	"unlock",
	722	Type::Static,
	723	LinkageSpec::Cforall,
	724	unlock_fn_type,
	725	nullptr,
	726	{ },
	727	Type::Inline
	728	);
	729
	730	CompoundStmt * unlock_statement = new CompoundStmt();
	731
	732	UntypedExpr * get_monitor_unlock = new UntypedExpr (
	733	new NameExpr( "get_monitor" ),
	734	{ new VariableExpr( unlock_fn_type->get_parameters().front() ) }
	735	);
	736
	737	unlock_statement->push_back(
	738	new ExprStmt(
	739	new UntypedExpr(
	740	new NameExpr( "unlock" ),
	741	{
	742	get_monitor_unlock
	743	}
	744	)
	745	)
	746	);
	747	unlock_decl->set_statements( unlock_statement );
	748
	749	// pushes routines to declsToAddAfter to add at a later time
	750	declsToAddAfter.push_back( lock_decl );
	751	declsToAddAfter.push_back( unlock_decl );
	752	}
	753
[427854b]	754	//=============================================================================================
	755	// Suspend keyword implementation
	756	//=============================================================================================
	757	bool SuspendKeyword::is_real_suspend( FunctionDecl * func ) {
	758	if(isMangled(func->linkage)) return false; // the real suspend isn't mangled
	759	if(func->name != "__cfactx_suspend") return false; // the real suspend has a specific name
	760	if(func->type->parameters.size() != 0) return false; // Too many parameters
	761	if(func->type->returnVals.size() != 0) return false; // Too many return values
	762
	763	return true;
[b32ada31]	764	}
	765
[427854b]	766	void SuspendKeyword::premutate( FunctionDecl * func ) {
	767	GuardValue(in_generator);
	768	in_generator = nullptr;
	769
	770	// Is this the real suspend?
	771	if(is_real_suspend(func)) {
	772	decl_suspend = decl_suspend ? decl_suspend : func;
	773	return;
	774	}
	775
	776	// Is this the main of a generator?
[1c01c58]	777	auto param = isMainFor( func, AggregateDecl::Aggregate::Generator );
[427854b]	778	if(!param) return;
	779
	780	if(func->type->returnVals.size() != 0) SemanticError(func->location, "Generator main must return void");
	781
	782	in_generator = param;
	783	GuardValue(labels);
	784	labels.clear();
	785	}
	786
	787	DeclarationWithType * SuspendKeyword::postmutate( FunctionDecl * func ) {
	788	if( !func->statements ) return func; // Not the actual definition, don't do anything
	789	if( !in_generator ) return func; // Not in a generator, don't do anything
	790	if( labels.empty() ) return func; // Generator has no states, nothing to do, could throw a warning
	791
	792	// This is a generator main, we need to add the following code to the top
	793	// static void * __generator_labels[] = {&&s0, &&s1, ...};
	794	// goto * __generator_labels[gen.__generator_state];
	795	const auto & loc = func->location;
	796
	797	const auto first_label = gen.newLabel("generator");
	798
	799	// for each label add to declaration
	800	std::list<Initializer*> inits = { new SingleInit( new LabelAddressExpr( first_label ) ) };
	801	for(const auto & label : labels) {
	802	inits.push_back(
	803	new SingleInit(
	804	new LabelAddressExpr( label )
	805	)
	806	);
	807	}
	808	auto init = new ListInit(std::move(inits), noDesignators, true);
	809	labels.clear();
	810
	811	// create decl
	812	auto decl = new ObjectDecl(
	813	"__generator_labels",
	814	Type::StorageClasses( Type::Static ),
	815	LinkageSpec::AutoGen,
	816	nullptr,
	817	new ArrayType(
	818	Type::Qualifiers(),
	819	new PointerType(
	820	Type::Qualifiers(),
	821	new VoidType( Type::Qualifiers() )
	822	),
	823	nullptr,
	824	false, false
	825	),
	826	init
	827	);
	828
	829	// create the goto
	830	assert(in_generator);
	831
	832	auto go_decl = new ObjectDecl(
	833	"__generator_label",
	834	noStorageClasses,
	835	LinkageSpec::AutoGen,
	836	nullptr,
	837	new PointerType(
	838	Type::Qualifiers(),
	839	new VoidType( Type::Qualifiers() )
	840	),
	841	new SingleInit(
	842	new UntypedExpr(
	843	new NameExpr("?[?]"),
	844	{
	845	new NameExpr("__generator_labels"),
	846	new UntypedMemberExpr(
	847	new NameExpr("__generator_state"),
	848	new VariableExpr( in_generator )
	849	)
	850	}
	851	)
	852	)
	853	);
	854	go_decl->location = loc;
	855
	856	auto go = new BranchStmt(
	857	new VariableExpr( go_decl ),
	858	BranchStmt::Goto
	859	);
	860	go->location = loc;
	861	go->computedTarget->location = loc;
	862
	863	auto noop = new NullStmt({ first_label });
	864	noop->location = loc;
	865
	866	// wrap everything in a nice compound
	867	auto body = new CompoundStmt({
	868	new DeclStmt( decl ),
	869	new DeclStmt( go_decl ),
	870	go,
	871	noop,
	872	func->statements
	873	});
	874	body->location = loc;
	875	func->statements = body;
	876
	877	return func;
	878	}
	879
	880	Statement * SuspendKeyword::postmutate( SuspendStmt * stmt ) {
	881	SuspendStmt::Type type = stmt->type;
	882	if(type == SuspendStmt::None) {
	883	// This suspend has a implicit target, find it
	884	type = in_generator ? SuspendStmt::Generator : SuspendStmt::Coroutine;
	885	}
	886
	887	// Check that the target makes sense
	888	if(!in_generator && type == SuspendStmt::Generator) SemanticError( stmt->location, "'suspend generator' must be used inside main of generator type.");
	889
	890	// Act appropriately
	891	switch(type) {
	892	case SuspendStmt::Generator: return make_generator_suspend(stmt);
	893	case SuspendStmt::Coroutine: return make_coroutine_suspend(stmt);
	894	default: abort();
	895	}
	896	}
	897
	898	Statement * SuspendKeyword::make_generator_suspend( SuspendStmt * stmt ) {
	899	assert(in_generator);
	900	// Target code is :
	901	// gen.__generator_state = X;
	902	// { THEN }
	903	// return;
	904	// __gen_X:;
	905
	906	// Save the location and delete the old statement, we only need the location from this point on
	907	auto loc = stmt->location;
	908
	909	// Build the label and get its index
	910	auto label = make_label();
	911
	912	// Create the context saving statement
	913	auto save = new ExprStmt( new UntypedExpr(
	914	new NameExpr( "?=?" ),
	915	{
	916	new UntypedMemberExpr(
	917	new NameExpr("__generator_state"),
	918	new VariableExpr( in_generator )
	919	),
	920	new ConstantExpr(
	921	Constant::from_int( label.idx )
	922	)
	923	}
	924	));
	925	assert(save->expr);
	926	save->location = loc;
	927	stmtsToAddBefore.push_back( save );
	928
	929	// if we have a then add it here
	930	auto then = stmt->then;
	931	stmt->then = nullptr;
	932	delete stmt;
	933	if(then) stmtsToAddBefore.push_back( then );
	934
	935	// Create the return statement
	936	auto ret = new ReturnStmt( nullptr );
	937	ret->location = loc;
	938	stmtsToAddBefore.push_back( ret );
	939
	940	// Create the null statement with the created label
	941	auto noop = new NullStmt({ label.obj });
	942	noop->location = loc;
	943
	944	// Return the null statement to take the place of the previous statement
	945	return noop;
	946	}
	947
	948	Statement * SuspendKeyword::make_coroutine_suspend( SuspendStmt * stmt ) {
	949	if(stmt->then) SemanticError( stmt->location, "Compound statement following coroutines is not implemented.");
	950
	951	// Save the location and delete the old statement, we only need the location from this point on
	952	auto loc = stmt->location;
	953	delete stmt;
	954
	955	// Create the call expression
	956	if(!decl_suspend) SemanticError( loc, "suspend keyword applied to coroutines requires coroutines to be in scope, add #include <coroutine.hfa>\n");
	957	auto expr = new UntypedExpr( VariableExpr::functionPointer( decl_suspend ) );
[e6cfa8ff]	958	expr->location = loc;
[427854b]	959
	960	// Change this statement into a regular expr
	961	assert(expr);
	962	auto nstmt = new ExprStmt( expr );
[e6cfa8ff]	963	nstmt->location = loc;
[427854b]	964	return nstmt;
	965	}
	966
	967
[64adb03]	968	//=============================================================================================
	969	// Mutex keyword implementation
	970	//=============================================================================================
[97e3296]	971
[2065609]	972	void MutexKeyword::postvisit(FunctionDecl* decl) {
[102a58b]	973
[db4d8e3]	974	bool first = false;
	975	std::list<DeclarationWithType*> mutexArgs = findMutexArgs( decl, first );
[ab8c6a6]	976	bool const isDtor = CodeGen::isDestructor( decl->name );
[64adb03]	977
[ceedde6]	978	// Is this function relevant to monitors
	979	if( mutexArgs.empty() ) {
	980	// If this is the destructor for a monitor it must be mutex
	981	if(isDtor) {
[3cc1111]	982	// This reflects MutexKeyword::validate, except does not produce an error.
[ceedde6]	983	Type* ty = decl->get_functionType()->get_parameters().front()->get_type();
	984
	985	// If it's a copy, it's not a mutex
	986	ReferenceType* rty = dynamic_cast< ReferenceType * >( ty );
	987	if( ! rty ) return;
	988
	989	// If we are not pointing directly to a type, it's not a mutex
	990	Type* base = rty->get_base();
	991	if( dynamic_cast< ReferenceType * >( base ) ) return;
	992	if( dynamic_cast< PointerType * >( base ) ) return;
	993
	994	// Check if its a struct
	995	StructInstType * baseStruct = dynamic_cast< StructInstType * >( base );
	996	if( !baseStruct ) return;
	997
	998	// Check if its a monitor
	999	if(baseStruct->baseStruct->is_monitor() \|\| baseStruct->baseStruct->is_thread())
	1000	SemanticError( decl, "destructors for structures declared as \"monitor\" must use mutex parameters\n" );
	1001	}
	1002	return;
	1003	}
[549c006]	1004
[ceedde6]	1005	// Monitors can't be constructed with mutual exclusion
	1006	if( CodeGen::isConstructor(decl->name) && !first ) SemanticError( decl, "constructors cannot have mutex parameters" );
[549c006]	1007
[ceedde6]	1008	// It makes no sense to have multiple mutex parameters for the destructor
[a16764a6]	1009	if( isDtor && mutexArgs.size() != 1 ) SemanticError( decl, "destructors can only have 1 mutex argument" );
[549c006]	1010
[ceedde6]	1011	// Make sure all the mutex arguments are monitors
[64adb03]	1012	for(auto arg : mutexArgs) {
	1013	validate( arg );
	1014	}
	1015
[ceedde6]	1016	// Check if we need to instrument the body
[64adb03]	1017	CompoundStmt* body = decl->get_statements();
	1018	if( ! body ) return;
	1019
[ceedde6]	1020	// Do we have the required headers
[a16764a6]	1021	if( !monitor_decl \|\| !guard_decl \|\| !dtor_guard_decl )
[73abe95]	1022	SemanticError( decl, "mutex keyword requires monitors to be in scope, add #include <monitor.hfa>\n" );
[b32ada31]	1023
[ceedde6]	1024	// Instrument the body
[ab8c6a6]	1025	if ( isDtor && isThread( mutexArgs.front() ) ) {
	1026	if( !thread_guard_decl ) {
	1027	SemanticError( decl, "thread destructor requires threads to be in scope, add #include <thread.hfa>\n" );
	1028	}
	1029	addThreadDtorStatements( decl, body, mutexArgs );
	1030	}
	1031	else if ( isDtor ) {
	1032	addDtorStatements( decl, body, mutexArgs );
[549c006]	1033	}
	1034	else {
[ab8c6a6]	1035	addStatements( decl, body, mutexArgs );
[549c006]	1036	}
[64adb03]	1037	}
	1038
[2065609]	1039	void MutexKeyword::postvisit(StructDecl* decl) {
[102a58b]	1040
[e84ab3d]	1041	if( decl->name == "monitor$" && decl->body ) {
[9243cc91]	1042	assert( !monitor_decl );
	1043	monitor_decl = decl;
	1044	}
[88d955f]	1045	else if( decl->name == "monitor_guard_t" && decl->body ) {
[ef42b143]	1046	assert( !guard_decl );
	1047	guard_decl = decl;
	1048	}
[88d955f]	1049	else if( decl->name == "monitor_dtor_guard_t" && decl->body ) {
[549c006]	1050	assert( !dtor_guard_decl );
	1051	dtor_guard_decl = decl;
	1052	}
[ab8c6a6]	1053	else if( decl->name == "thread_dtor_guard_t" && decl->body ) {
	1054	assert( !thread_guard_decl );
	1055	thread_guard_decl = decl;
[af67ee1]	1056	}
	1057	else if ( decl->name == "__mutex_stmt_lock_guard" && decl->body ) {
	1058	assert( !lock_guard_decl );
	1059	lock_guard_decl = decl;
[ab8c6a6]	1060	}
[9243cc91]	1061	}
	1062
[6cebfef]	1063	Statement * MutexKeyword::postmutate( MutexStmt * stmt ) {
	1064	std::list<Statement *> stmtsForCtor;
	1065	stmtsForCtor.push_back(stmt->stmt);
	1066	CompoundStmt * body = new CompoundStmt( stmtsForCtor );
	1067	addStatements( body, stmt->mutexObjs);
	1068	return body;
	1069	}
	1070
[db4d8e3]	1071	std::list<DeclarationWithType> MutexKeyword::findMutexArgs( FunctionDecl decl, bool & first ) {
[64adb03]	1072	std::list<DeclarationWithType*> mutexArgs;
	1073
[db4d8e3]	1074	bool once = true;
[64adb03]	1075	for( auto arg : decl->get_functionType()->get_parameters()) {
	1076	//Find mutex arguments
	1077	Type* ty = arg->get_type();
[615a096]	1078	if( ! ty->get_mutex() ) continue;
[64adb03]	1079
[db4d8e3]	1080	if(once) {first = true;}
	1081	once = false;
	1082
[64adb03]	1083	//Append it to the list
	1084	mutexArgs.push_back( arg );
	1085	}
	1086
	1087	return mutexArgs;
	1088	}
	1089
	1090	void MutexKeyword::validate( DeclarationWithType * arg ) {
	1091	Type* ty = arg->get_type();
	1092
	1093	//Makes sure it's not a copy
[870d1f0]	1094	ReferenceType* rty = dynamic_cast< ReferenceType * >( ty );
[a16764a6]	1095	if( ! rty ) SemanticError( arg, "Mutex argument must be of reference type " );
[64adb03]	1096
	1097	//Make sure the we are pointing directly to a type
[83a071f9]	1098	Type* base = rty->get_base();
[a16764a6]	1099	if( dynamic_cast< ReferenceType * >( base ) ) SemanticError( arg, "Mutex argument have exactly one level of indirection " );
	1100	if( dynamic_cast< PointerType * >( base ) ) SemanticError( arg, "Mutex argument have exactly one level of indirection " );
[64adb03]	1101
	1102	//Make sure that typed isn't mutex
[a16764a6]	1103	if( base->get_mutex() ) SemanticError( arg, "mutex keyword may only appear once per argument " );
[64adb03]	1104	}
	1105
[ab8c6a6]	1106	void MutexKeyword::addDtorStatements( FunctionDecl* func, CompoundStmt * body, const std::list<DeclarationWithType * > & args ) {
[549c006]	1107	Type * arg_type = args.front()->get_type()->clone();
	1108	arg_type->set_mutex( false );
	1109
	1110	ObjectDecl * monitors = new ObjectDecl(
	1111	"__monitor",
[ba3706f]	1112	noStorageClasses,
[549c006]	1113	LinkageSpec::Cforall,
	1114	nullptr,
	1115	new PointerType(
	1116	noQualifiers,
	1117	new StructInstType(
	1118	noQualifiers,
	1119	monitor_decl
	1120	)
	1121	),
	1122	new SingleInit( new UntypedExpr(
	1123	new NameExpr( "get_monitor" ),
[b81fd95]	1124	{ new CastExpr( new VariableExpr( args.front() ), arg_type, false ) }
[549c006]	1125	))
	1126	);
	1127
	1128	assert(generic_func);
	1129
	1130	//in reverse order :
[2bf7ef6]	1131	// monitor_dtor_guard_t __guard = { __monitors, func };
[549c006]	1132	body->push_front(
[ba3706f]	1133	new DeclStmt( new ObjectDecl(
[549c006]	1134	"__guard",
[ba3706f]	1135	noStorageClasses,
[549c006]	1136	LinkageSpec::Cforall,
	1137	nullptr,
	1138	new StructInstType(
	1139	noQualifiers,
	1140	dtor_guard_decl
	1141	),
	1142	new ListInit(
	1143	{
	1144	new SingleInit( new AddressExpr( new VariableExpr( monitors ) ) ),
[77a2994]	1145	new SingleInit( new CastExpr( new VariableExpr( func ), generic_func->clone(), false ) ),
	1146	new SingleInit( new ConstantExpr( Constant::from_bool( false ) ) )
[549c006]	1147	},
	1148	noDesignators,
	1149	true
	1150	)
	1151	))
	1152	);
	1153
[e84ab3d]	1154	//monitor$ * __monitors[] = { get_monitor(a), get_monitor(b) };
[ab8c6a6]	1155	body->push_front( new DeclStmt( monitors ) );
	1156	}
	1157
	1158	void MutexKeyword::addThreadDtorStatements(
	1159	FunctionDecl, CompoundStmt body,
	1160	const std::list<DeclarationWithType * > & args ) {
	1161	assert( args.size() == 1 );
	1162	DeclarationWithType * arg = args.front();
	1163	Type * arg_type = arg->get_type()->clone();
	1164	assert( arg_type->get_mutex() );
	1165	arg_type->set_mutex( false );
	1166
	1167	// thread_dtor_guard_t __guard = { this, intptr( 0 ) };
	1168	body->push_front(
	1169	new DeclStmt( new ObjectDecl(
	1170	"__guard",
	1171	noStorageClasses,
	1172	LinkageSpec::Cforall,
	1173	nullptr,
	1174	new StructInstType(
	1175	noQualifiers,
	1176	thread_guard_decl
	1177	),
	1178	new ListInit(
	1179	{
	1180	new SingleInit( new CastExpr( new VariableExpr( arg ), arg_type ) ),
	1181	new SingleInit( new UntypedExpr(
	1182	new NameExpr( "intptr" ), {
	1183	new ConstantExpr( Constant::from_int( 0 ) ),
	1184	}
	1185	) ),
	1186	},
	1187	noDesignators,
	1188	true
	1189	)
	1190	))
	1191	);
[549c006]	1192	}
	1193
[6cebfef]	1194	void MutexKeyword::addStatements( CompoundStmt * body, const std::list<Expression * > & args ) {
	1195	ObjectDecl * monitors = new ObjectDecl(
	1196	"__monitors",
	1197	noStorageClasses,
	1198	LinkageSpec::Cforall,
	1199	nullptr,
	1200	new ArrayType(
	1201	noQualifiers,
	1202	new PointerType(
	1203	noQualifiers,
[a8367eb]	1204	//new TypeofType( noQualifiers, args.front()->clone() )
	1205	new TypeofType( noQualifiers, new UntypedExpr(
[080d2d7]	1206	new NameExpr( "__get_mutexstmt_lock_type" ),
[a8367eb]	1207	{ args.front()->clone() }
	1208	)
	1209	)
[6cebfef]	1210	),
	1211	new ConstantExpr( Constant::from_ulong( args.size() ) ),
	1212	false,
	1213	false
	1214	),
	1215	new ListInit(
	1216	map_range < std::list<Initializer> > ( args, [](Expression var ){
[a8367eb]	1217	return new SingleInit( new UntypedExpr(
[080d2d7]	1218	new NameExpr( "__get_mutexstmt_lock_ptr" ),
[a8367eb]	1219	{ var }
	1220	) );
	1221	//return new SingleInit( new AddressExpr( var ) );
[6cebfef]	1222	})
	1223	)
	1224	);
	1225
[af67ee1]	1226	StructInstType * lock_guard_struct = new StructInstType( noQualifiers, lock_guard_decl );
[a8367eb]	1227	TypeExpr * lock_type_expr = new TypeExpr(
	1228	new TypeofType( noQualifiers, new UntypedExpr(
[080d2d7]	1229	new NameExpr( "__get_mutexstmt_lock_type" ),
[a8367eb]	1230	{ args.front()->clone() }
	1231	)
	1232	)
	1233	);
[af67ee1]	1234
	1235	lock_guard_struct->parameters.push_back( lock_type_expr ) ;
	1236
[6cebfef]	1237	// in reverse order :
	1238	// monitor_guard_t __guard = { __monitors, # };
	1239	body->push_front(
	1240	new DeclStmt( new ObjectDecl(
	1241	"__guard",
	1242	noStorageClasses,
	1243	LinkageSpec::Cforall,
	1244	nullptr,
[af67ee1]	1245	lock_guard_struct,
[6cebfef]	1246	new ListInit(
	1247	{
	1248	new SingleInit( new VariableExpr( monitors ) ),
	1249	new SingleInit( new ConstantExpr( Constant::from_ulong( args.size() ) ) )
	1250	},
	1251	noDesignators,
	1252	true
	1253	)
	1254	))
	1255	);
	1256
	1257	//monitor$ * __monitors[] = { get_monitor(a), get_monitor(b) };
	1258	body->push_front( new DeclStmt( monitors) );
	1259	}
	1260
[ab8c6a6]	1261	void MutexKeyword::addStatements( FunctionDecl* func, CompoundStmt * body, const std::list<DeclarationWithType * > & args ) {
[9243cc91]	1262	ObjectDecl * monitors = new ObjectDecl(
	1263	"__monitors",
[ba3706f]	1264	noStorageClasses,
[9243cc91]	1265	LinkageSpec::Cforall,
	1266	nullptr,
	1267	new ArrayType(
	1268	noQualifiers,
	1269	new PointerType(
	1270	noQualifiers,
	1271	new StructInstType(
	1272	noQualifiers,
	1273	monitor_decl
	1274	)
	1275	),
	1276	new ConstantExpr( Constant::from_ulong( args.size() ) ),
	1277	false,
	1278	false
	1279	),
	1280	new ListInit(
[bd41764]	1281	map_range < std::list<Initializer> > ( args, [](DeclarationWithType var ){
[cb0e6de]	1282	Type * type = var->get_type()->clone();
	1283	type->set_mutex( false );
[9243cc91]	1284	return new SingleInit( new UntypedExpr(
	1285	new NameExpr( "get_monitor" ),
[b81fd95]	1286	{ new CastExpr( new VariableExpr( var ), type, false ) }
[9243cc91]	1287	) );
	1288	})
	1289	)
	1290	);
	1291
[97e3296]	1292	assert(generic_func);
	1293
[2bf7ef6]	1294	// in reverse order :
[97e3296]	1295	// monitor_guard_t __guard = { __monitors, #, func };
[64adb03]	1296	body->push_front(
[ba3706f]	1297	new DeclStmt( new ObjectDecl(
[64adb03]	1298	"__guard",
[ba3706f]	1299	noStorageClasses,
[64adb03]	1300	LinkageSpec::Cforall,
	1301	nullptr,
	1302	new StructInstType(
	1303	noQualifiers,
[ef42b143]	1304	guard_decl
[64adb03]	1305	),
	1306	new ListInit(
	1307	{
[9243cc91]	1308	new SingleInit( new VariableExpr( monitors ) ),
[97e3296]	1309	new SingleInit( new ConstantExpr( Constant::from_ulong( args.size() ) ) ),
[b81fd95]	1310	new SingleInit( new CastExpr( new VariableExpr( func ), generic_func->clone(), false ) )
[ef42b143]	1311	},
	1312	noDesignators,
	1313	true
[64adb03]	1314	)
	1315	))
	1316	);
	1317
[e84ab3d]	1318	//monitor$ * __monitors[] = { get_monitor(a), get_monitor(b) };
[ba3706f]	1319	body->push_front( new DeclStmt( monitors) );
[64adb03]	1320	}
[bd4d011]	1321
	1322	//=============================================================================================
	1323	// General entry routine
	1324	//=============================================================================================
[549c006]	1325	void ThreadStarter::previsit( StructDecl * decl ) {
[e84ab3d]	1326	if( decl->name == "thread$" && decl->body ) {
[549c006]	1327	assert( !thread_decl );
	1328	thread_decl = decl;
	1329	}
	1330	}
	1331
[2065609]	1332	void ThreadStarter::postvisit(FunctionDecl * decl) {
[9f5ecf5]	1333	if( ! CodeGen::isConstructor(decl->name) ) return;
[bd4d011]	1334
[549c006]	1335	Type * typeof_this = InitTweak::getTypeofThis(decl->type);
	1336	StructInstType * ctored_type = dynamic_cast< StructInstType * >( typeof_this );
	1337	if( ctored_type && ctored_type->baseStruct == thread_decl ) {
	1338	thread_ctor_seen = true;
	1339	}
	1340
[bd4d011]	1341	DeclarationWithType * param = decl->get_functionType()->get_parameters().front();
[ce8c12f]	1342	auto type = dynamic_cast< StructInstType * >( InitTweak::getPointerBase( param->get_type() ) );
[bd4d011]	1343	if( type && type->get_baseStruct()->is_thread() ) {
[549c006]	1344	if( !thread_decl \|\| !thread_ctor_seen ) {
[73abe95]	1345	SemanticError( type->get_baseStruct()->location, "thread keyword requires threads to be in scope, add #include <thread.hfa>");
[549c006]	1346	}
	1347
[bd4d011]	1348	addStartStatement( decl, param );
	1349	}
	1350	}
	1351
	1352	void ThreadStarter::addStartStatement( FunctionDecl * decl, DeclarationWithType * param ) {
	1353	CompoundStmt * stmt = decl->get_statements();
	1354
	1355	if( ! stmt ) return;
	1356
[bf2438c]	1357	stmt->push_back(
[bd4d011]	1358	new ExprStmt(
	1359	new UntypedExpr(
	1360	new NameExpr( "__thrd_start" ),
[09f357ec]	1361	{ new VariableExpr( param ), new NameExpr("main") }
[bd4d011]	1362	)
	1363	)
	1364	);
	1365	}
[68fe077a]	1366	};
[6b0b624]	1367
	1368	// Local Variables: //
	1369	// mode: c //
	1370	// tab-width: 4 //
	1371	// End: //
[1c01c58]	1372

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