ObjFW  Diff

#import "OFOutOfRangeException.h"
#import "OFThreadJoinFailedException.h"
#import "OFThreadStartFailedException.h"
#import "OFThreadStillRunningException.h"

#import "threading.h"

static OFList *TLSKeys;
static of_tlskey_t threadSelf;

static id
call_main(OFThread *thread)
{
#if defined(OF_GNU_RUNTIME) || defined(OF_OLD_GNU_RUNTIME)
	objc_thread_add();
#endif

	if (!of_tlskey_set(threadSelf, thread))
		@throw [OFInitializationFailedException
		    newWithClass: [thread class]];

	/*
	 * Nasty workaround for thread implementations which can't return a
	 * value on join.
	 */
	thread->returnValue = [[thread main] retain];

	[thread handleTermination];

	thread->running = OF_THREAD_WAITING_FOR_JOIN;

	[OFTLSKey callAllDestructors];
	[OFAutoreleasePool releaseAll];

	[thread release];

#if defined(OF_GNU_RUNTIME) || defined(OF_OLD_GNU_RUNTIME)
	objc_thread_remove();
#endif

	return 0;
}

@implementation OFThread
+ (void)initialize
{
	if (self != [OFThread class])
		return;

	if (!of_tlskey_new(&threadSelf))
		@throw [OFInitializationFailedException newWithClass: self];
}

+ thread
{
	return [[[self alloc] init] autorelease];
}

+ threadWithObject: (id)object
{
	return [[[self alloc] initWithObject: object] autorelease];
}

+ (void)setObject: (id)object
	forTLSKey: (OFTLSKey*)key
{
	id oldObject = of_tlskey_get(key->key);

	if (!of_tlskey_set(key->key, [object retain]))
		@throw [OFInvalidArgumentException newWithClass: self
						       selector: _cmd];

	[oldObject release];
}

+ (id)objectForTLSKey: (OFTLSKey*)key
{
	return [[of_tlskey_get(key->key) retain] autorelease];
}

+ (OFThread*)currentThread
{
	return [[of_tlskey_get(threadSelf) retain] autorelease];
}

+ (void)sleepForTimeInterval: (int64_t)seconds
{
	if (seconds < 0)
		@throw [OFOutOfRangeException newWithClass: self];

#ifndef _WIN32
	if (seconds > UINT_MAX)
		@throw [OFOutOfRangeException newWithClass: self];

	sleep((unsigned int)seconds);
#else
	if (seconds * 1000 > UINT_MAX)
		@throw [OFOutOfRangeException newWithClass: self];

	Sleep((unsigned int)seconds * 1000);
#endif
}

+ (void)sleepForTimeInterval: (int64_t)seconds
		microseconds: (uint32_t)microseconds
{
	if (seconds < 0)
		@throw [OFOutOfRangeException newWithClass: self];

#ifndef _WIN32
	sleep((unsigned int)seconds);
	usleep(microseconds);
#else
	if (seconds * 1000 + microseconds / 1000 > UINT_MAX)
		@throw [OFOutOfRangeException newWithClass: self];

	Sleep((unsigned int)seconds * 1000 + microseconds / 1000);
#endif
}

+ (void)sleepUntilDate: (OFDate*)date
{
	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
	OFDate *now = [OFDate date];
	int64_t seconds;
	uint32_t microseconds;

	if ((seconds = [date timeIntervalSinceDate: now]) < 0)
		@throw [OFOutOfRangeException newWithClass: self];

	microseconds = [date microsecondsOfTimeIntervalSinceDate: now];

	[pool release];

#ifndef _WIN32
	if (seconds > UINT_MAX)
		@throw [OFOutOfRangeException newWithClass: self];

	sleep((unsigned int)seconds);
	usleep(microseconds);
#else
	if (seconds * 1000 + microseconds / 1000 > UINT_MAX)
		@throw [OFOutOfRangeException newWithClass: self];

	Sleep(seconds * 1000 + microseconds / 1000);
#endif
}

+ (void)yield
{
#ifdef OF_HAVE_SCHED_YIELD
	sched_yield();
#else
	[self sleepForTimeInterval: 0];
#endif
}

+ (void)terminate
{
	[self terminateWithObject: nil];
}

+ (void)terminateWithObject: (id)object
{
	OFThread *thread = of_tlskey_get(threadSelf);

	if (thread != nil) {
		thread->returnValue = [object retain];

		[thread handleTermination];

		thread->running = OF_THREAD_WAITING_FOR_JOIN;
	}

	[OFTLSKey callAllDestructors];
	[OFAutoreleasePool releaseAll];

	[thread release];

#if defined(OF_GNU_RUNTIME) || defined(OF_OLD_GNU_RUNTIME)
	objc_thread_remove();
#endif

	of_thread_exit();
}

- initWithObject: (id)object_
{
	self = [super init];

	@try {
		object = [object_ retain];
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

{
	if (running == OF_THREAD_RUNNING)
		@throw [OFThreadStillRunningException newWithClass: isa
							    thread: self];

	if (running == OF_THREAD_WAITING_FOR_JOIN) {
		of_thread_detach(thread);
		[returnValue release];
	}

	[self retain];

	if (!of_thread_new(&thread, call_main, self)) {
		[self release];
		@throw [OFThreadStartFailedException newWithClass: isa

{
	if (running == OF_THREAD_NOT_RUNNING || !of_thread_join(thread))
		@throw [OFThreadJoinFailedException newWithClass: isa
							  thread: self];

	running = OF_THREAD_NOT_RUNNING;

	return returnValue;
}

- (void)dealloc
{
	if (running == OF_THREAD_RUNNING)
		@throw [OFThreadStillRunningException newWithClass: isa
							    thread: self];

	/*
	 * We should not be running anymore, but call detach in order to free
	 * the resources.
	 */
	if (running == OF_THREAD_WAITING_FOR_JOIN)
		of_thread_detach(thread);

	[object release];
	[returnValue release];

	[super dealloc];
}
@end

@implementation OFTLSKey
+ (void)initialize
{
	if (self == [OFTLSKey class])
		TLSKeys = [[OFList alloc] init];
}

+ TLSKey
{
	return [[[self alloc] init] autorelease];
}

+ TLSKeyWithDestructor: (void(*)(id))destructor
{
	return [[[self alloc] initWithDestructor: destructor] autorelease];
}

+ (void)callAllDestructors
{
	of_list_object_t *iter;

	@synchronized (TLSKeys) {
		for (iter = [TLSKeys firstListObject]; iter != NULL;
		    iter = iter->next) {
			OFTLSKey *key = (OFTLSKey*)iter->object;

			if (key->destructor != NULL)
				key->destructor(iter->object);
		}
	}
}

- init
{
	self = [super init];

	@try {
		if (!of_tlskey_new(&key))
			@throw [OFInitializationFailedException
			    newWithClass: isa];

		initialized = YES;

		@synchronized (TLSKeys) {
			listObject = [TLSKeys appendObject: self];
		}
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;

	if (destructor != NULL)
		destructor(self);

	if (initialized)
		of_tlskey_free(key);

	/* In case we called [self release] in init */
	if (listObject != NULL) {
		@synchronized (TLSKeys) {
			[TLSKeys removeListObject: listObject];
		}
	}

	[super dealloc];
}
@end

	if (!of_condition_new(&condition)) {
		Class c = isa;
		[self release];
		@throw [OFInitializationFailedException newWithClass: c];
	}

	conditionInitialized = YES;

	return self;
}

- (void)wait
{
	if (!of_condition_wait(&condition, &mutex))

	if (!of_condition_broadcast(&condition))
		@throw [OFConditionBroadcastFailedException newWithClass: isa
							       condition: self];
}

- (void)dealloc
{
	if (conditionInitialized)
		if (!of_condition_free(&condition))
			@throw [OFConditionStillWaitingException
			    newWithClass: isa
			       condition: self];

	[super dealloc];
}
@end