/*
* Copyright (c) 2008-2024 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3.0 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* version 3.0 for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* version 3.0 along with this program. If not, see
* <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#define _POSIX_TIMERS
#include <errno.h>
#include <stdlib.h>
#include <math.h>
#include <time.h>
#ifdef OF_HAVE_SCHED_YIELD
# include <sched.h>
#endif
#include "unistd_wrapper.h"
#include "platform.h"
#ifdef OF_AMIGAOS
# define Class IntuitionClass
# include <proto/exec.h>
# include <proto/dos.h>
# undef Class
#endif
#ifdef OF_WII
# define nanosleep ogc_nanosleep
# include <ogcsys.h>
# undef nanosleep
#endif
#ifdef OF_NINTENDO_3DS
# include <3ds/svc.h>
#endif
#import "OFThread.h"
#import "OFThread+Private.h"
#ifdef OF_HAVE_ATOMIC_OPS
# import "OFAtomic.h"
#endif
#import "OFDate.h"
#import "OFDictionary.h"
#ifdef OF_HAVE_SOCKETS
# import "OFDNSResolver.h"
#endif
#import "OFLocale.h"
#import "OFRunLoop.h"
#import "OFString.h"
#ifdef OF_WINDOWS
# include <windows.h>
#endif
#ifdef OF_NINTENDO_DS
# define asm __asm__
# include <nds.h>
# undef asm
#endif
#import "OFInitializationFailedException.h"
#import "OFInvalidArgumentException.h"
#import "OFNotImplementedException.h"
#import "OFOutOfRangeException.h"
#ifdef OF_HAVE_THREADS
# import "OFJoinThreadFailedException.h"
# import "OFStartThreadFailedException.h"
# import "OFThreadStillRunningException.h"
#endif
#ifdef OF_MINT
/* freemint-gcc does not have trunc() */
# define trunc(x) ((int64_t)(x))
#endif
#if defined(OF_HAVE_THREADS)
# import "OFTLSKey.h"
# if defined(OF_AMIGAOS) && defined(OF_HAVE_SOCKETS)
# import "OFSocket.h"
# endif
static OFTLSKey threadSelfKey;
static OFThread *mainThread;
#elif defined(OF_HAVE_SOCKETS)
static OFDNSResolver *DNSResolver;
#endif
@implementation OFThread
#ifdef OF_HAVE_THREADS
static void
callMain(id object)
{
OFThread *thread = (OFThread *)object;
OFString *name;
if (OFTLSKeySet(threadSelfKey, thread) != 0)
@throw [OFInitializationFailedException
exceptionWithClass: thread.class];
#ifndef OF_OBJFW_RUNTIME
thread->_pool = objc_autoreleasePoolPush();
#endif
name = thread.name;
if (name != nil)
OFSetThreadName(
[name cStringWithEncoding: [OFLocale encoding]]);
else
OFSetThreadName(object_getClassName(thread));
#if defined(OF_AMIGAOS) && defined(OF_HAVE_SOCKETS)
if (thread.supportsSockets)
if (!OFSocketInit())
@throw [OFInitializationFailedException
exceptionWithClass: thread.class];
#endif
/*
* Nasty workaround for thread implementations which can't return a
* pointer on join, or don't have a way to exit a thread.
*/
if (setjmp(thread->_exitEnv) == 0) {
# ifdef OF_HAVE_BLOCKS
if (thread->_block != NULL)
thread->_returnValue = [thread->_block() retain];
else
# endif
thread->_returnValue = [[thread main] retain];
}
[thread handleTermination];
#ifdef OF_OBJFW_RUNTIME
objc_autoreleasePoolPop((void *)(uintptr_t)-1);
#else
objc_autoreleasePoolPop(thread->_pool);
#endif
#if defined(OF_AMIGAOS) && !defined(OF_MORPHOS) && defined(OF_HAVE_SOCKETS)
if (thread.supportsSockets)
OFSocketDeinit();
#endif
thread->_running = OFThreadStateWaitingForJoin;
[thread release];
}
@synthesize name = _name;
# ifdef OF_HAVE_BLOCKS
@synthesize block = _block;
# endif
+ (void)initialize
{
if (self != [OFThread class])
return;
if (OFTLSKeyNew(&threadSelfKey) != 0)
@throw [OFInitializationFailedException
exceptionWithClass: self];
}
+ (instancetype)thread
{
return [[[self alloc] init] autorelease];
}
# ifdef OF_HAVE_BLOCKS
+ (instancetype)threadWithBlock: (OFThreadBlock)block
{
return [[[self alloc] initWithBlock: block] autorelease];
}
# endif
+ (OFThread *)currentThread
{
return OFTLSKeyGet(threadSelfKey);
}
+ (OFThread *)mainThread
{
return mainThread;
}
+ (bool)isMainThread
{
if (mainThread == nil)
return false;
return (OFTLSKeyGet(threadSelfKey) == mainThread);
}
+ (OFMutableDictionary *)threadDictionary
{
OFThread *thread = OFTLSKeyGet(threadSelfKey);
if (thread == nil)
return nil;
if (thread->_threadDictionary == nil)
thread->_threadDictionary = [[OFMutableDictionary alloc] init];
return thread->_threadDictionary;
}
#endif
#ifdef OF_HAVE_SOCKETS
+ (OFDNSResolver *)DNSResolver
{
# ifdef OF_HAVE_THREADS
OFThread *thread = OFTLSKeyGet(threadSelfKey);
if (thread == nil)
return nil;
if (thread->_DNSResolver == nil)
thread->_DNSResolver = [[OFDNSResolver alloc] init];
return thread->_DNSResolver;
# else
if (DNSResolver == nil)
DNSResolver = [[OFDNSResolver alloc] init];
return DNSResolver;
# endif
}
#endif
+ (void)sleepForTimeInterval: (OFTimeInterval)timeInterval
{
if (timeInterval < 0)
return;
#if defined(OF_WINDOWS)
if (timeInterval * 1000 > UINT_MAX)
@throw [OFOutOfRangeException exception];
Sleep((unsigned int)(timeInterval * 1000));
#elif defined(OF_NINTENDO_3DS)
if (timeInterval * 1000000000 > INT64_MAX)
@throw [OFOutOfRangeException exception];
svcSleepThread((int64_t)(timeInterval * 1000000000));
#elif defined(OF_AMIGAOS)
struct timerequest request = *DOSBase->dl_TimeReq;
request.tr_node.io_Message.mn_ReplyPort =
&((struct Process *)FindTask(NULL))->pr_MsgPort;
request.tr_node.io_Command = TR_ADDREQUEST;
request.tr_time.tv_secs = (ULONG)timeInterval;
request.tr_time.tv_micro = (ULONG)
((timeInterval - (unsigned int)timeInterval) * 1000000);
DoIO((struct IORequest *)&request);
#elif defined(HAVE_NANOSLEEP)
struct timespec rqtp;
rqtp.tv_sec = (time_t)timeInterval;
rqtp.tv_nsec = (long)((timeInterval - rqtp.tv_sec) * 1000000000);
if (rqtp.tv_sec != trunc(timeInterval))
@throw [OFOutOfRangeException exception];
nanosleep(&rqtp, NULL);
#elif defined(OF_NINTENDO_DS)
uint64_t counter;
if (timeInterval > UINT64_MAX / 60)
@throw [OFOutOfRangeException exception];
counter = timeInterval * 60;
while (counter--)
swiWaitForVBlank();
#else
if (timeInterval > UINT_MAX)
@throw [OFOutOfRangeException exception];
sleep((unsigned int)timeInterval);
usleep((unsigned int)
((timeInterval - (unsigned int)timeInterval) * 1000000));
#endif
}
+ (void)sleepUntilDate: (OFDate *)date
{
[self sleepForTimeInterval: date.timeIntervalSinceNow];
}
+ (void)yield
{
#ifdef OF_HAVE_SCHED_YIELD
sched_yield();
#else
[self sleepForTimeInterval: 0];
#endif
}
#ifdef OF_HAVE_THREADS
+ (void)terminate
{
[self terminateWithObject: nil];
/*
* For some reason, Clang thinks terminateWithObject: can return - even
* though it is declared OF_NO_RETURN - and warns that terminate
* returns while being declared OF_NO_RETURN.
*/
OF_UNREACHABLE
}
+ (void)terminateWithObject: (id)object
{
OFThread *thread = OFTLSKeyGet(threadSelfKey);
if (thread == mainThread)
@throw [OFInvalidArgumentException exception];
OFEnsure(thread != nil);
thread->_returnValue = [object retain];
longjmp(thread->_exitEnv, 1);
OF_UNREACHABLE
}
+ (void)setName: (OFString *)name
{
[OFThread currentThread].name = name;
if (name != nil)
OFSetThreadName(
[name cStringWithEncoding: [OFLocale encoding]]);
else
OFSetThreadName(class_getName([self class]));
}
+ (OFString *)name
{
return [OFThread currentThread].name;
}
+ (void)of_createMainThread
{
mainThread = [[OFThread alloc] init];
mainThread->_thread = OFCurrentPlainThread();
mainThread->_running = OFThreadStateRunning;
if (OFTLSKeySet(threadSelfKey, mainThread) != 0)
@throw [OFInitializationFailedException
exceptionWithClass: self];
}
- (instancetype)init
{
self = [super init];
@try {
if (OFPlainThreadAttributesInit(&_attr) != 0)
@throw [OFInitializationFailedException
exceptionWithClass: self.class];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
# ifdef OF_HAVE_BLOCKS
- (instancetype)initWithBlock: (OFThreadBlock)block
{
self = [self init];
@try {
_block = [block copy];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
# endif
- (id)main
{
[[OFRunLoop currentRunLoop] run];
return nil;
}
- (void)handleTermination
{
OFRunLoop *oldRunLoop = _runLoop;
_runLoop = nil;
[oldRunLoop release];
[_threadDictionary release];
_threadDictionary = nil;
# ifdef OF_HAVE_SOCKETS
[_DNSResolver release];
_DNSResolver = nil;
# endif
}
- (void)start
{
int error;
if (_running == OFThreadStateRunning)
@throw [OFThreadStillRunningException
exceptionWithThread: self];
if (_running == OFThreadStateWaitingForJoin) {
OFPlainThreadDetach(_thread);
[_returnValue release];
}
[self retain];
_running = OFThreadStateRunning;
if ((error = OFPlainThreadNew(&_thread, [_name cStringWithEncoding:
[OFLocale encoding]], callMain, self, &_attr)) != 0) {
[self release];
@throw [OFStartThreadFailedException
exceptionWithThread: self
errNo: error];
}
}
- (id)join
{
int error;
if (_running == OFThreadStateNotRunning)
@throw [OFJoinThreadFailedException
exceptionWithThread: self
errNo: EINVAL];
if ((error = OFPlainThreadJoin(_thread)) != 0)
@throw [OFJoinThreadFailedException exceptionWithThread: self
errNo: error];
_running = OFThreadStateNotRunning;
return _returnValue;
}
- (id)copy
{
return [self retain];
}
- (OFRunLoop *)runLoop
{
# if defined(OF_HAVE_ATOMIC_OPS) && !defined(__clang_analyzer__)
if (_runLoop == nil) {
OFRunLoop *tmp = [[OFRunLoop alloc] init];
if (!OFAtomicPointerCompareAndSwap(
(void **)&_runLoop, nil, tmp))
[tmp release];
}
# else
@synchronized (self) {
if (_runLoop == nil)
_runLoop = [[OFRunLoop alloc] init];
}
# endif
return _runLoop;
}
- (float)priority
{
return _attr.priority;
}
- (void)setPriority: (float)priority
{
if (_running == OFThreadStateRunning)
@throw [OFThreadStillRunningException
exceptionWithThread: self];
_attr.priority = priority;
}
- (size_t)stackSize
{
return _attr.stackSize;
}
- (void)setStackSize: (size_t)stackSize
{
if (_running == OFThreadStateRunning)
@throw [OFThreadStillRunningException
exceptionWithThread: self];
_attr.stackSize = stackSize;
}
- (bool)supportsSockets
{
return _supportsSockets;
}
- (void)setSupportsSockets: (bool)supportsSockets
{
if (_running == OFThreadStateRunning)
@throw [OFThreadStillRunningException
exceptionWithThread: self];
_supportsSockets = supportsSockets;
}
- (void)dealloc
{
if (_running == OFThreadStateRunning)
@throw [OFThreadStillRunningException
exceptionWithThread: self];
/*
* We should not be running anymore, but call detach in order to free
* the resources.
*/
if (_running == OFThreadStateWaitingForJoin)
OFPlainThreadDetach(_thread);
[_returnValue release];
# ifdef OF_HAVE_BLOCKS
[_block release];
# endif
[super dealloc];
}
#else
- (instancetype)init
{
OF_INVALID_INIT_METHOD
}
#endif
@end