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source: src/Concurrency/Keywords.cc @ eb211bf

ADTast-experimentalenumpthread-emulationqualifiedEnum

Last change on this file since eb211bf was 3cc1111, checked in by Andrew Beach <ajbeach@…>, 3 years ago
Small fix in Decl.hpp and a new-ast function added in InitTweak?.
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 ) ) {
	424	// This should never trigger.
	425	assert( vtable_decl );
	426	// Should be safe because of isMainFor.
	427	StructInstType * struct_type = static_cast<StructInstType *>(
	428	static_cast<ReferenceType *>( param->get_type() )->base );
	429	assert( struct_type );
	430
[69c5c00]	431	std::list< Expression * > poly_args = { new TypeExpr( struct_type->clone() ) };
	432	ObjectDecl * vtable_object = Virtual::makeVtableInstance(
[b583113]	433	"_default_vtable_object_declaration",
[69c5c00]	434	vtable_decl->makeInst( poly_args ), struct_type, nullptr );
	435	declsToAddAfter.push_back( vtable_object );
[b583113]	436	declsToAddAfter.push_back(
	437	new ObjectDecl(
	438	Virtual::concurrentDefaultVTableName(),
[67b421c]	439	noStorageClasses,
[b583113]	440	LinkageSpec::Cforall,
	441	/* bitfieldWidth */ nullptr,
	442	new ReferenceType( Type::Const, vtable_object->type->clone() ),
	443	new SingleInit( new VariableExpr( vtable_object ) )
	444	)
	445	);
[69c5c00]	446	declsToAddAfter.push_back( Virtual::makeGetExceptionFunction(
	447	vtable_object, except_decl->makeInst( std::move( poly_args ) )
	448	) );
[1c01c58]	449	}
[6c3a5ac1]	450
	451	return decl;
	452	}
	453
[9a705dc8]	454	Expression * ConcurrentSueKeyword::postmutate( KeywordCastExpr * cast ) {
	455	if ( cast_target == cast->target ) {
[e84ab3d]	456	// convert (thread &)t to (thread$ &)*get_thread(t), etc.
[9a705dc8]	457	if( !type_decl ) SemanticError( cast, context_error );
[6c3a5ac1]	458	if( !dtor_decl ) SemanticError( cast, context_error );
[3b0c8cb]	459	assert( cast->result == nullptr );
	460	cast->set_result( new ReferenceType( noQualifiers, new StructInstType( noQualifiers, type_decl ) ) );
	461	cast->concrete_target.field = field_name;
	462	cast->concrete_target.getter = getter_name;
[9a705dc8]	463	}
	464	return cast;
	465	}
	466
[bcda04c]	467	void ConcurrentSueKeyword::handle( StructDecl * decl ) {
[9f5ecf5]	468	if( ! decl->body ) return;
[b32ada31]	469
[a16764a6]	470	if( !type_decl ) SemanticError( decl, context_error );
[6c3a5ac1]	471	if( !dtor_decl ) SemanticError( decl, context_error );
[b32ada31]	472
[ecfd758]	473	if ( !exception_name.empty() ) {
	474	if( !typeid_decl ) SemanticError( decl, context_error );
	475	if( !vtable_decl ) SemanticError( decl, context_error );
	476
	477	addTypeId( decl );
	478	addVtableForward( decl );
	479	}
[bcda04c]	480	FunctionDecl * func = forwardDeclare( decl );
	481	ObjectDecl * field = addField( decl );
[af67ee1]	482
	483	// add get_.* routine
[2f9a722]	484	addRoutines( field, func );
[af67ee1]	485	// add lock/unlock routines to monitors for use by mutex stmt
	486	addLockUnlockRoutines( decl );
[b32ada31]	487	}
	488
[ecfd758]	489	void ConcurrentSueKeyword::addTypeId( StructDecl * decl ) {
	490	assert( typeid_decl );
	491	StructInstType typeid_type( Type::Const, typeid_decl );
	492	typeid_type.parameters.push_back( new TypeExpr(
	493	new StructInstType( noQualifiers, decl )
[69c5c00]	494	) );
[ecfd758]	495	declsToAddBefore.push_back( Virtual::makeTypeIdInstance( &typeid_type ) );
	496	}
	497
	498	void ConcurrentSueKeyword::addVtableForward( StructDecl * decl ) {
	499	assert( vtable_decl );
	500	std::list< Expression * > poly_args = {
	501	new TypeExpr( new StructInstType( noQualifiers, decl ) ),
	502	};
	503	declsToAddBefore.push_back( Virtual::makeGetExceptionForward(
	504	vtable_decl->makeInst( poly_args ),
	505	except_decl->makeInst( poly_args )
	506	) );
[b583113]	507	ObjectDecl * vtable_object = Virtual::makeVtableForward(
	508	"_default_vtable_object_declaration",
	509	vtable_decl->makeInst( move( poly_args ) ) );
	510	declsToAddBefore.push_back( vtable_object );
[8edbe40]	511	declsToAddBefore.push_back(
[b583113]	512	new ObjectDecl(
	513	Virtual::concurrentDefaultVTableName(),
[67b421c]	514	Type::StorageClasses( Type::Extern ),
[b583113]	515	LinkageSpec::Cforall,
	516	/* bitfieldWidth */ nullptr,
	517	new ReferenceType( Type::Const, vtable_object->type->clone() ),
	518	/* init */ nullptr
	519	)
	520	);
[1c01c58]	521	}
	522
[bcda04c]	523	FunctionDecl * ConcurrentSueKeyword::forwardDeclare( StructDecl * decl ) {
	524
	525	StructDecl * forward = decl->clone();
	526	forward->set_body( false );
	527	deleteAll( forward->get_members() );
	528	forward->get_members().clear();
	529
[bd4d011]	530	FunctionType * get_type = new FunctionType( noQualifiers, false );
[bcda04c]	531	ObjectDecl * this_decl = new ObjectDecl(
	532	"this",
[ba3706f]	533	noStorageClasses,
[b32ada31]	534	LinkageSpec::Cforall,
	535	nullptr,
[83a071f9]	536	new ReferenceType(
[b32ada31]	537	noQualifiers,
[bcda04c]	538	new StructInstType(
	539	noQualifiers,
	540	decl
	541	)
[b32ada31]	542	),
	543	nullptr
	544	);
	545
[2db79e5]	546	get_type->get_parameters().push_back( this_decl->clone() );
[bd4d011]	547	get_type->get_returnVals().push_back(
[e04b636]	548	new ObjectDecl(
	549	"ret",
[ba3706f]	550	noStorageClasses,
[e04b636]	551	LinkageSpec::Cforall,
	552	nullptr,
	553	new PointerType(
	554	noQualifiers,
	555	new StructInstType(
	556	noQualifiers,
[bcda04c]	557	type_decl
[e04b636]	558	)
	559	),
	560	nullptr
	561	)
	562	);
[2db79e5]	563	fixupGenerics(get_type, decl);
[b32ada31]	564
[bcda04c]	565	FunctionDecl * get_decl = new FunctionDecl(
	566	getter_name,
	567	Type::Static,
	568	LinkageSpec::Cforall,
[bd4d011]	569	get_type,
[bcda04c]	570	nullptr,
[a8078ee]	571	{ new Attribute("const") },
[bcda04c]	572	Type::Inline
	573	);
	574
[bd4d011]	575	FunctionDecl * main_decl = nullptr;
	576
	577	if( needs_main ) {
	578	FunctionType * main_type = new FunctionType( noQualifiers, false );
[bf2438c]	579
[bd4d011]	580	main_type->get_parameters().push_back( this_decl->clone() );
	581
	582	main_decl = new FunctionDecl(
	583	"main",
[ba3706f]	584	noStorageClasses,
[bd4d011]	585	LinkageSpec::Cforall,
	586	main_type,
	587	nullptr
	588	);
[2db79e5]	589	fixupGenerics(main_type, decl);
[bd4d011]	590	}
	591
[2db79e5]	592	delete this_decl;
	593
[2065609]	594	declsToAddBefore.push_back( forward );
	595	if( needs_main ) declsToAddBefore.push_back( main_decl );
	596	declsToAddBefore.push_back( get_decl );
[bcda04c]	597
	598	return get_decl;
	599	}
	600
	601	ObjectDecl * ConcurrentSueKeyword::addField( StructDecl * decl ) {
	602	ObjectDecl * field = new ObjectDecl(
	603	field_name,
[ba3706f]	604	noStorageClasses,
[bcda04c]	605	LinkageSpec::Cforall,
	606	nullptr,
	607	new StructInstType(
	608	noQualifiers,
	609	type_decl
	610	),
	611	nullptr
	612	);
	613
	614	decl->get_members().push_back( field );
	615
	616	return field;
	617	}
	618
[af67ee1]	619	// This function adds the get_.* routine body for coroutines, monitors etc
	620	// after their corresponding struct has been made
[2f9a722]	621	void ConcurrentSueKeyword::addRoutines( ObjectDecl * field, FunctionDecl * func ) {
[ba3706f]	622	CompoundStmt * statement = new CompoundStmt();
[bf2438c]	623	statement->push_back(
[b32ada31]	624	new ReturnStmt(
[e04b636]	625	new AddressExpr(
[bcda04c]	626	new MemberExpr(
	627	field,
[2db79e5]	628	new CastExpr(
	629	new VariableExpr( func->get_functionType()->get_parameters().front() ),
[b81fd95]	630	func->get_functionType()->get_parameters().front()->get_type()->stripReferences()->clone(),
	631	false
[2db79e5]	632	)
[e04b636]	633	)
[b32ada31]	634	)
	635	)
	636	);
	637
[bcda04c]	638	FunctionDecl * get_decl = func->clone();
	639
	640	get_decl->set_statements( statement );
[e04b636]	641
	642	declsToAddAfter.push_back( get_decl );
[427854b]	643	}
	644
[af67ee1]	645	// Generates lock/unlock routines for monitors to be used by mutex stmts
	646	void ConcurrentSueKeyword::addLockUnlockRoutines( StructDecl * decl ) {
	647	// this routine will be called for all ConcurrentSueKeyword children so only continue if we are a monitor
	648	if ( !decl->is_monitor() ) return;
	649
	650	FunctionType * lock_fn_type = new FunctionType( noQualifiers, false );
	651	FunctionType * unlock_fn_type = new FunctionType( noQualifiers, false );
	652
	653	// create this ptr parameter for both routines
	654	ObjectDecl * this_decl = new ObjectDecl(
	655	"this",
	656	noStorageClasses,
	657	LinkageSpec::Cforall,
	658	nullptr,
	659	new ReferenceType(
	660	noQualifiers,
	661	new StructInstType(
	662	noQualifiers,
	663	decl
	664	)
	665	),
	666	nullptr
	667	);
	668
	669	lock_fn_type->get_parameters().push_back( this_decl->clone() );
	670	unlock_fn_type->get_parameters().push_back( this_decl->clone() );
[5b7c8b5]	671	fixupGenerics(lock_fn_type, decl);
	672	fixupGenerics(unlock_fn_type, decl);
[af67ee1]	673
	674	delete this_decl;
	675
	676
	677	//////////////////////////////////////////////////////////////////////
	678	// The following generates this lock routine for all monitors
	679	/*
	680	void lock (monitor_t & this) {
	681	lock(get_monitor(this));
	682	}
	683	*/
	684	FunctionDecl * lock_decl = new FunctionDecl(
	685	"lock",
	686	Type::Static,
	687	LinkageSpec::Cforall,
	688	lock_fn_type,
	689	nullptr,
	690	{ },
	691	Type::Inline
	692	);
	693
	694	UntypedExpr * get_monitor_lock = new UntypedExpr (
	695	new NameExpr( "get_monitor" ),
	696	{ new VariableExpr( lock_fn_type->get_parameters().front() ) }
	697	);
	698
	699	CompoundStmt * lock_statement = new CompoundStmt();
	700	lock_statement->push_back(
	701	new ExprStmt(
	702	new UntypedExpr (
	703	new NameExpr( "lock" ),
	704	{
	705	get_monitor_lock
	706	}
	707	)
	708	)
	709	);
	710	lock_decl->set_statements( lock_statement );
	711
	712	//////////////////////////////////////////////////////////////////
	713	// The following generates this routine for all monitors
	714	/*
	715	void unlock (monitor_t & this) {
	716	unlock(get_monitor(this));
	717	}
	718	*/
	719	FunctionDecl * unlock_decl = new FunctionDecl(
	720	"unlock",
	721	Type::Static,
	722	LinkageSpec::Cforall,
	723	unlock_fn_type,
	724	nullptr,
	725	{ },
	726	Type::Inline
	727	);
	728
	729	CompoundStmt * unlock_statement = new CompoundStmt();
	730
	731	UntypedExpr * get_monitor_unlock = new UntypedExpr (
	732	new NameExpr( "get_monitor" ),
	733	{ new VariableExpr( unlock_fn_type->get_parameters().front() ) }
	734	);
	735
	736	unlock_statement->push_back(
	737	new ExprStmt(
	738	new UntypedExpr(
	739	new NameExpr( "unlock" ),
	740	{
	741	get_monitor_unlock
	742	}
	743	)
	744	)
	745	);
	746	unlock_decl->set_statements( unlock_statement );
	747
	748	// pushes routines to declsToAddAfter to add at a later time
	749	declsToAddAfter.push_back( lock_decl );
	750	declsToAddAfter.push_back( unlock_decl );
	751	}
	752
[427854b]	753	//=============================================================================================
	754	// Suspend keyword implementation
	755	//=============================================================================================
	756	bool SuspendKeyword::is_real_suspend( FunctionDecl * func ) {
	757	if(isMangled(func->linkage)) return false; // the real suspend isn't mangled
	758	if(func->name != "__cfactx_suspend") return false; // the real suspend has a specific name
	759	if(func->type->parameters.size() != 0) return false; // Too many parameters
	760	if(func->type->returnVals.size() != 0) return false; // Too many return values
	761
	762	return true;
[b32ada31]	763	}
	764
[427854b]	765	void SuspendKeyword::premutate( FunctionDecl * func ) {
	766	GuardValue(in_generator);
	767	in_generator = nullptr;
	768
	769	// Is this the real suspend?
	770	if(is_real_suspend(func)) {
	771	decl_suspend = decl_suspend ? decl_suspend : func;
	772	return;
	773	}
	774
	775	// Is this the main of a generator?
[1c01c58]	776	auto param = isMainFor( func, AggregateDecl::Aggregate::Generator );
[427854b]	777	if(!param) return;
	778
	779	if(func->type->returnVals.size() != 0) SemanticError(func->location, "Generator main must return void");
	780
	781	in_generator = param;
	782	GuardValue(labels);
	783	labels.clear();
	784	}
	785
	786	DeclarationWithType * SuspendKeyword::postmutate( FunctionDecl * func ) {
	787	if( !func->statements ) return func; // Not the actual definition, don't do anything
	788	if( !in_generator ) return func; // Not in a generator, don't do anything
	789	if( labels.empty() ) return func; // Generator has no states, nothing to do, could throw a warning
	790
	791	// This is a generator main, we need to add the following code to the top
	792	// static void * __generator_labels[] = {&&s0, &&s1, ...};
	793	// goto * __generator_labels[gen.__generator_state];
	794	const auto & loc = func->location;
	795
	796	const auto first_label = gen.newLabel("generator");
	797
	798	// for each label add to declaration
	799	std::list<Initializer*> inits = { new SingleInit( new LabelAddressExpr( first_label ) ) };
	800	for(const auto & label : labels) {
	801	inits.push_back(
	802	new SingleInit(
	803	new LabelAddressExpr( label )
	804	)
	805	);
	806	}
	807	auto init = new ListInit(std::move(inits), noDesignators, true);
	808	labels.clear();
	809
	810	// create decl
	811	auto decl = new ObjectDecl(
	812	"__generator_labels",
	813	Type::StorageClasses( Type::Static ),
	814	LinkageSpec::AutoGen,
	815	nullptr,
	816	new ArrayType(
	817	Type::Qualifiers(),
	818	new PointerType(
	819	Type::Qualifiers(),
	820	new VoidType( Type::Qualifiers() )
	821	),
	822	nullptr,
	823	false, false
	824	),
	825	init
	826	);
	827
	828	// create the goto
	829	assert(in_generator);
	830
	831	auto go_decl = new ObjectDecl(
	832	"__generator_label",
	833	noStorageClasses,
	834	LinkageSpec::AutoGen,
	835	nullptr,
	836	new PointerType(
	837	Type::Qualifiers(),
	838	new VoidType( Type::Qualifiers() )
	839	),
	840	new SingleInit(
	841	new UntypedExpr(
	842	new NameExpr("?[?]"),
	843	{
	844	new NameExpr("__generator_labels"),
	845	new UntypedMemberExpr(
	846	new NameExpr("__generator_state"),
	847	new VariableExpr( in_generator )
	848	)
	849	}
	850	)
	851	)
	852	);
	853	go_decl->location = loc;
	854
	855	auto go = new BranchStmt(
	856	new VariableExpr( go_decl ),
	857	BranchStmt::Goto
	858	);
	859	go->location = loc;
	860	go->computedTarget->location = loc;
	861
	862	auto noop = new NullStmt({ first_label });
	863	noop->location = loc;
	864
	865	// wrap everything in a nice compound
	866	auto body = new CompoundStmt({
	867	new DeclStmt( decl ),
	868	new DeclStmt( go_decl ),
	869	go,
	870	noop,
	871	func->statements
	872	});
	873	body->location = loc;
	874	func->statements = body;
	875
	876	return func;
	877	}
	878
	879	Statement * SuspendKeyword::postmutate( SuspendStmt * stmt ) {
	880	SuspendStmt::Type type = stmt->type;
	881	if(type == SuspendStmt::None) {
	882	// This suspend has a implicit target, find it
	883	type = in_generator ? SuspendStmt::Generator : SuspendStmt::Coroutine;
	884	}
	885
	886	// Check that the target makes sense
	887	if(!in_generator && type == SuspendStmt::Generator) SemanticError( stmt->location, "'suspend generator' must be used inside main of generator type.");
	888
	889	// Act appropriately
	890	switch(type) {
	891	case SuspendStmt::Generator: return make_generator_suspend(stmt);
	892	case SuspendStmt::Coroutine: return make_coroutine_suspend(stmt);
	893	default: abort();
	894	}
	895	}
	896
	897	Statement * SuspendKeyword::make_generator_suspend( SuspendStmt * stmt ) {
	898	assert(in_generator);
	899	// Target code is :
	900	// gen.__generator_state = X;
	901	// { THEN }
	902	// return;
	903	// __gen_X:;
	904
	905	// Save the location and delete the old statement, we only need the location from this point on
	906	auto loc = stmt->location;
	907
	908	// Build the label and get its index
	909	auto label = make_label();
	910
	911	// Create the context saving statement
	912	auto save = new ExprStmt( new UntypedExpr(
	913	new NameExpr( "?=?" ),
	914	{
	915	new UntypedMemberExpr(
	916	new NameExpr("__generator_state"),
	917	new VariableExpr( in_generator )
	918	),
	919	new ConstantExpr(
	920	Constant::from_int( label.idx )
	921	)
	922	}
	923	));
	924	assert(save->expr);
	925	save->location = loc;
	926	stmtsToAddBefore.push_back( save );
	927
	928	// if we have a then add it here
	929	auto then = stmt->then;
	930	stmt->then = nullptr;
	931	delete stmt;
	932	if(then) stmtsToAddBefore.push_back( then );
	933
	934	// Create the return statement
	935	auto ret = new ReturnStmt( nullptr );
	936	ret->location = loc;
	937	stmtsToAddBefore.push_back( ret );
	938
	939	// Create the null statement with the created label
	940	auto noop = new NullStmt({ label.obj });
	941	noop->location = loc;
	942
	943	// Return the null statement to take the place of the previous statement
	944	return noop;
	945	}
	946
	947	Statement * SuspendKeyword::make_coroutine_suspend( SuspendStmt * stmt ) {
	948	if(stmt->then) SemanticError( stmt->location, "Compound statement following coroutines is not implemented.");
	949
	950	// Save the location and delete the old statement, we only need the location from this point on
	951	auto loc = stmt->location;
	952	delete stmt;
	953
	954	// Create the call expression
	955	if(!decl_suspend) SemanticError( loc, "suspend keyword applied to coroutines requires coroutines to be in scope, add #include <coroutine.hfa>\n");
	956	auto expr = new UntypedExpr( VariableExpr::functionPointer( decl_suspend ) );
[e6cfa8ff]	957	expr->location = loc;
[427854b]	958
	959	// Change this statement into a regular expr
	960	assert(expr);
	961	auto nstmt = new ExprStmt( expr );
[e6cfa8ff]	962	nstmt->location = loc;
[427854b]	963	return nstmt;
	964	}
	965
	966
[64adb03]	967	//=============================================================================================
	968	// Mutex keyword implementation
	969	//=============================================================================================
[97e3296]	970
[2065609]	971	void MutexKeyword::postvisit(FunctionDecl* decl) {
[102a58b]	972
[db4d8e3]	973	bool first = false;
	974	std::list<DeclarationWithType*> mutexArgs = findMutexArgs( decl, first );
[ab8c6a6]	975	bool const isDtor = CodeGen::isDestructor( decl->name );
[64adb03]	976
[ceedde6]	977	// Is this function relevant to monitors
	978	if( mutexArgs.empty() ) {
	979	// If this is the destructor for a monitor it must be mutex
	980	if(isDtor) {
[3cc1111]	981	// This reflects MutexKeyword::validate, except does not produce an error.
[ceedde6]	982	Type* ty = decl->get_functionType()->get_parameters().front()->get_type();
	983
	984	// If it's a copy, it's not a mutex
	985	ReferenceType* rty = dynamic_cast< ReferenceType * >( ty );
	986	if( ! rty ) return;
	987
	988	// If we are not pointing directly to a type, it's not a mutex
	989	Type* base = rty->get_base();
	990	if( dynamic_cast< ReferenceType * >( base ) ) return;
	991	if( dynamic_cast< PointerType * >( base ) ) return;
	992
	993	// Check if its a struct
	994	StructInstType * baseStruct = dynamic_cast< StructInstType * >( base );
	995	if( !baseStruct ) return;
	996
	997	// Check if its a monitor
	998	if(baseStruct->baseStruct->is_monitor() \|\| baseStruct->baseStruct->is_thread())
	999	SemanticError( decl, "destructors for structures declared as \"monitor\" must use mutex parameters\n" );
	1000	}
	1001	return;
	1002	}
[549c006]	1003
[ceedde6]	1004	// Monitors can't be constructed with mutual exclusion
	1005	if( CodeGen::isConstructor(decl->name) && !first ) SemanticError( decl, "constructors cannot have mutex parameters" );
[549c006]	1006
[ceedde6]	1007	// It makes no sense to have multiple mutex parameters for the destructor
[a16764a6]	1008	if( isDtor && mutexArgs.size() != 1 ) SemanticError( decl, "destructors can only have 1 mutex argument" );
[549c006]	1009
[ceedde6]	1010	// Make sure all the mutex arguments are monitors
[64adb03]	1011	for(auto arg : mutexArgs) {
	1012	validate( arg );
	1013	}
	1014
[ceedde6]	1015	// Check if we need to instrument the body
[64adb03]	1016	CompoundStmt* body = decl->get_statements();
	1017	if( ! body ) return;
	1018
[ceedde6]	1019	// Do we have the required headers
[a16764a6]	1020	if( !monitor_decl \|\| !guard_decl \|\| !dtor_guard_decl )
[73abe95]	1021	SemanticError( decl, "mutex keyword requires monitors to be in scope, add #include <monitor.hfa>\n" );
[b32ada31]	1022
[ceedde6]	1023	// Instrument the body
[ab8c6a6]	1024	if ( isDtor && isThread( mutexArgs.front() ) ) {
	1025	if( !thread_guard_decl ) {
	1026	SemanticError( decl, "thread destructor requires threads to be in scope, add #include <thread.hfa>\n" );
	1027	}
	1028	addThreadDtorStatements( decl, body, mutexArgs );
	1029	}
	1030	else if ( isDtor ) {
	1031	addDtorStatements( decl, body, mutexArgs );
[549c006]	1032	}
	1033	else {
[ab8c6a6]	1034	addStatements( decl, body, mutexArgs );
[549c006]	1035	}
[64adb03]	1036	}
	1037
[2065609]	1038	void MutexKeyword::postvisit(StructDecl* decl) {
[102a58b]	1039
[e84ab3d]	1040	if( decl->name == "monitor$" && decl->body ) {
[9243cc91]	1041	assert( !monitor_decl );
	1042	monitor_decl = decl;
	1043	}
[88d955f]	1044	else if( decl->name == "monitor_guard_t" && decl->body ) {
[ef42b143]	1045	assert( !guard_decl );
	1046	guard_decl = decl;
	1047	}
[88d955f]	1048	else if( decl->name == "monitor_dtor_guard_t" && decl->body ) {
[549c006]	1049	assert( !dtor_guard_decl );
	1050	dtor_guard_decl = decl;
	1051	}
[ab8c6a6]	1052	else if( decl->name == "thread_dtor_guard_t" && decl->body ) {
	1053	assert( !thread_guard_decl );
	1054	thread_guard_decl = decl;
[af67ee1]	1055	}
	1056	else if ( decl->name == "__mutex_stmt_lock_guard" && decl->body ) {
	1057	assert( !lock_guard_decl );
	1058	lock_guard_decl = decl;
[ab8c6a6]	1059	}
[9243cc91]	1060	}
	1061
[6cebfef]	1062	Statement * MutexKeyword::postmutate( MutexStmt * stmt ) {
	1063	std::list<Statement *> stmtsForCtor;
	1064	stmtsForCtor.push_back(stmt->stmt);
	1065	CompoundStmt * body = new CompoundStmt( stmtsForCtor );
	1066	addStatements( body, stmt->mutexObjs);
	1067	return body;
	1068	}
	1069
[db4d8e3]	1070	std::list<DeclarationWithType> MutexKeyword::findMutexArgs( FunctionDecl decl, bool & first ) {
[64adb03]	1071	std::list<DeclarationWithType*> mutexArgs;
	1072
[db4d8e3]	1073	bool once = true;
[64adb03]	1074	for( auto arg : decl->get_functionType()->get_parameters()) {
	1075	//Find mutex arguments
	1076	Type* ty = arg->get_type();
[615a096]	1077	if( ! ty->get_mutex() ) continue;
[64adb03]	1078
[db4d8e3]	1079	if(once) {first = true;}
	1080	once = false;
	1081
[64adb03]	1082	//Append it to the list
	1083	mutexArgs.push_back( arg );
	1084	}
	1085
	1086	return mutexArgs;
	1087	}
	1088
	1089	void MutexKeyword::validate( DeclarationWithType * arg ) {
	1090	Type* ty = arg->get_type();
	1091
	1092	//Makes sure it's not a copy
[870d1f0]	1093	ReferenceType* rty = dynamic_cast< ReferenceType * >( ty );
[a16764a6]	1094	if( ! rty ) SemanticError( arg, "Mutex argument must be of reference type " );
[64adb03]	1095
	1096	//Make sure the we are pointing directly to a type
[83a071f9]	1097	Type* base = rty->get_base();
[a16764a6]	1098	if( dynamic_cast< ReferenceType * >( base ) ) SemanticError( arg, "Mutex argument have exactly one level of indirection " );
	1099	if( dynamic_cast< PointerType * >( base ) ) SemanticError( arg, "Mutex argument have exactly one level of indirection " );
[64adb03]	1100
	1101	//Make sure that typed isn't mutex
[a16764a6]	1102	if( base->get_mutex() ) SemanticError( arg, "mutex keyword may only appear once per argument " );
[64adb03]	1103	}
	1104
[ab8c6a6]	1105	void MutexKeyword::addDtorStatements( FunctionDecl* func, CompoundStmt * body, const std::list<DeclarationWithType * > & args ) {
[549c006]	1106	Type * arg_type = args.front()->get_type()->clone();
	1107	arg_type->set_mutex( false );
	1108
	1109	ObjectDecl * monitors = new ObjectDecl(
	1110	"__monitor",
[ba3706f]	1111	noStorageClasses,
[549c006]	1112	LinkageSpec::Cforall,
	1113	nullptr,
	1114	new PointerType(
	1115	noQualifiers,
	1116	new StructInstType(
	1117	noQualifiers,
	1118	monitor_decl
	1119	)
	1120	),
	1121	new SingleInit( new UntypedExpr(
	1122	new NameExpr( "get_monitor" ),
[b81fd95]	1123	{ new CastExpr( new VariableExpr( args.front() ), arg_type, false ) }
[549c006]	1124	))
	1125	);
	1126
	1127	assert(generic_func);
	1128
	1129	//in reverse order :
[2bf7ef6]	1130	// monitor_dtor_guard_t __guard = { __monitors, func };
[549c006]	1131	body->push_front(
[ba3706f]	1132	new DeclStmt( new ObjectDecl(
[549c006]	1133	"__guard",
[ba3706f]	1134	noStorageClasses,
[549c006]	1135	LinkageSpec::Cforall,
	1136	nullptr,
	1137	new StructInstType(
	1138	noQualifiers,
	1139	dtor_guard_decl
	1140	),
	1141	new ListInit(
	1142	{
	1143	new SingleInit( new AddressExpr( new VariableExpr( monitors ) ) ),
[77a2994]	1144	new SingleInit( new CastExpr( new VariableExpr( func ), generic_func->clone(), false ) ),
	1145	new SingleInit( new ConstantExpr( Constant::from_bool( false ) ) )
[549c006]	1146	},
	1147	noDesignators,
	1148	true
	1149	)
	1150	))
	1151	);
	1152
[e84ab3d]	1153	//monitor$ * __monitors[] = { get_monitor(a), get_monitor(b) };
[ab8c6a6]	1154	body->push_front( new DeclStmt( monitors ) );
	1155	}
	1156
	1157	void MutexKeyword::addThreadDtorStatements(
	1158	FunctionDecl, CompoundStmt body,
	1159	const std::list<DeclarationWithType * > & args ) {
	1160	assert( args.size() == 1 );
	1161	DeclarationWithType * arg = args.front();
	1162	Type * arg_type = arg->get_type()->clone();
	1163	assert( arg_type->get_mutex() );
	1164	arg_type->set_mutex( false );
	1165
	1166	// thread_dtor_guard_t __guard = { this, intptr( 0 ) };
	1167	body->push_front(
	1168	new DeclStmt( new ObjectDecl(
	1169	"__guard",
	1170	noStorageClasses,
	1171	LinkageSpec::Cforall,
	1172	nullptr,
	1173	new StructInstType(
	1174	noQualifiers,
	1175	thread_guard_decl
	1176	),
	1177	new ListInit(
	1178	{
	1179	new SingleInit( new CastExpr( new VariableExpr( arg ), arg_type ) ),
	1180	new SingleInit( new UntypedExpr(
	1181	new NameExpr( "intptr" ), {
	1182	new ConstantExpr( Constant::from_int( 0 ) ),
	1183	}
	1184	) ),
	1185	},
	1186	noDesignators,
	1187	true
	1188	)
	1189	))
	1190	);
[549c006]	1191	}
	1192
[6cebfef]	1193	void MutexKeyword::addStatements( CompoundStmt * body, const std::list<Expression * > & args ) {
	1194	ObjectDecl * monitors = new ObjectDecl(
	1195	"__monitors",
	1196	noStorageClasses,
	1197	LinkageSpec::Cforall,
	1198	nullptr,
	1199	new ArrayType(
	1200	noQualifiers,
	1201	new PointerType(
	1202	noQualifiers,
[a8367eb]	1203	//new TypeofType( noQualifiers, args.front()->clone() )
	1204	new TypeofType( noQualifiers, new UntypedExpr(
	1205	new NameExpr( "__get_type" ),
	1206	{ args.front()->clone() }
	1207	)
	1208	)
[6cebfef]	1209	),
	1210	new ConstantExpr( Constant::from_ulong( args.size() ) ),
	1211	false,
	1212	false
	1213	),
	1214	new ListInit(
	1215	map_range < std::list<Initializer> > ( args, [](Expression var ){
[a8367eb]	1216	return new SingleInit( new UntypedExpr(
	1217	new NameExpr( "__get_ptr" ),
	1218	{ var }
	1219	) );
	1220	//return new SingleInit( new AddressExpr( var ) );
[6cebfef]	1221	})
	1222	)
	1223	);
	1224
[af67ee1]	1225	StructInstType * lock_guard_struct = new StructInstType( noQualifiers, lock_guard_decl );
[a8367eb]	1226	TypeExpr * lock_type_expr = new TypeExpr(
	1227	new TypeofType( noQualifiers, new UntypedExpr(
	1228	new NameExpr( "__get_type" ),
	1229	{ args.front()->clone() }
	1230	)
	1231	)
	1232	);
[af67ee1]	1233
	1234	lock_guard_struct->parameters.push_back( lock_type_expr ) ;
	1235
[6cebfef]	1236	// in reverse order :
	1237	// monitor_guard_t __guard = { __monitors, # };
	1238	body->push_front(
	1239	new DeclStmt( new ObjectDecl(
	1240	"__guard",
	1241	noStorageClasses,
	1242	LinkageSpec::Cforall,
	1243	nullptr,
[af67ee1]	1244	lock_guard_struct,
[6cebfef]	1245	new ListInit(
	1246	{
	1247	new SingleInit( new VariableExpr( monitors ) ),
	1248	new SingleInit( new ConstantExpr( Constant::from_ulong( args.size() ) ) )
	1249	},
	1250	noDesignators,
	1251	true
	1252	)
	1253	))
	1254	);
	1255
	1256	//monitor$ * __monitors[] = { get_monitor(a), get_monitor(b) };
	1257	body->push_front( new DeclStmt( monitors) );
	1258	}
	1259
[ab8c6a6]	1260	void MutexKeyword::addStatements( FunctionDecl* func, CompoundStmt * body, const std::list<DeclarationWithType * > & args ) {
[9243cc91]	1261	ObjectDecl * monitors = new ObjectDecl(
	1262	"__monitors",
[ba3706f]	1263	noStorageClasses,
[9243cc91]	1264	LinkageSpec::Cforall,
	1265	nullptr,
	1266	new ArrayType(
	1267	noQualifiers,
	1268	new PointerType(
	1269	noQualifiers,
	1270	new StructInstType(
	1271	noQualifiers,
	1272	monitor_decl
	1273	)
	1274	),
	1275	new ConstantExpr( Constant::from_ulong( args.size() ) ),
	1276	false,
	1277	false
	1278	),
	1279	new ListInit(
[bd41764]	1280	map_range < std::list<Initializer> > ( args, [](DeclarationWithType var ){
[cb0e6de]	1281	Type * type = var->get_type()->clone();
	1282	type->set_mutex( false );
[9243cc91]	1283	return new SingleInit( new UntypedExpr(
	1284	new NameExpr( "get_monitor" ),
[b81fd95]	1285	{ new CastExpr( new VariableExpr( var ), type, false ) }
[9243cc91]	1286	) );
	1287	})
	1288	)
	1289	);
	1290
[97e3296]	1291	assert(generic_func);
	1292
[2bf7ef6]	1293	// in reverse order :
[97e3296]	1294	// monitor_guard_t __guard = { __monitors, #, func };
[64adb03]	1295	body->push_front(
[ba3706f]	1296	new DeclStmt( new ObjectDecl(
[64adb03]	1297	"__guard",
[ba3706f]	1298	noStorageClasses,
[64adb03]	1299	LinkageSpec::Cforall,
	1300	nullptr,
	1301	new StructInstType(
	1302	noQualifiers,
[ef42b143]	1303	guard_decl
[64adb03]	1304	),
	1305	new ListInit(
	1306	{
[9243cc91]	1307	new SingleInit( new VariableExpr( monitors ) ),
[97e3296]	1308	new SingleInit( new ConstantExpr( Constant::from_ulong( args.size() ) ) ),
[b81fd95]	1309	new SingleInit( new CastExpr( new VariableExpr( func ), generic_func->clone(), false ) )
[ef42b143]	1310	},
	1311	noDesignators,
	1312	true
[64adb03]	1313	)
	1314	))
	1315	);
	1316
[e84ab3d]	1317	//monitor$ * __monitors[] = { get_monitor(a), get_monitor(b) };
[ba3706f]	1318	body->push_front( new DeclStmt( monitors) );
[64adb03]	1319	}
[bd4d011]	1320
	1321	//=============================================================================================
	1322	// General entry routine
	1323	//=============================================================================================
[549c006]	1324	void ThreadStarter::previsit( StructDecl * decl ) {
[e84ab3d]	1325	if( decl->name == "thread$" && decl->body ) {
[549c006]	1326	assert( !thread_decl );
	1327	thread_decl = decl;
	1328	}
	1329	}
	1330
[2065609]	1331	void ThreadStarter::postvisit(FunctionDecl * decl) {
[9f5ecf5]	1332	if( ! CodeGen::isConstructor(decl->name) ) return;
[bd4d011]	1333
[549c006]	1334	Type * typeof_this = InitTweak::getTypeofThis(decl->type);
	1335	StructInstType * ctored_type = dynamic_cast< StructInstType * >( typeof_this );
	1336	if( ctored_type && ctored_type->baseStruct == thread_decl ) {
	1337	thread_ctor_seen = true;
	1338	}
	1339
[bd4d011]	1340	DeclarationWithType * param = decl->get_functionType()->get_parameters().front();
[ce8c12f]	1341	auto type = dynamic_cast< StructInstType * >( InitTweak::getPointerBase( param->get_type() ) );
[bd4d011]	1342	if( type && type->get_baseStruct()->is_thread() ) {
[549c006]	1343	if( !thread_decl \|\| !thread_ctor_seen ) {
[73abe95]	1344	SemanticError( type->get_baseStruct()->location, "thread keyword requires threads to be in scope, add #include <thread.hfa>");
[549c006]	1345	}
	1346
[bd4d011]	1347	addStartStatement( decl, param );
	1348	}
	1349	}
	1350
	1351	void ThreadStarter::addStartStatement( FunctionDecl * decl, DeclarationWithType * param ) {
	1352	CompoundStmt * stmt = decl->get_statements();
	1353
	1354	if( ! stmt ) return;
	1355
[bf2438c]	1356	stmt->push_back(
[bd4d011]	1357	new ExprStmt(
	1358	new UntypedExpr(
	1359	new NameExpr( "__thrd_start" ),
[09f357ec]	1360	{ new VariableExpr( param ), new NameExpr("main") }
[bd4d011]	1361	)
	1362	)
	1363	);
	1364	}
[68fe077a]	1365	};
[6b0b624]	1366
	1367	// Local Variables: //
	1368	// mode: c //
	1369	// tab-width: 4 //
	1370	// End: //
[1c01c58]	1371

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