/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
* Jonathan Schleifer <js@heap.zone>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#define OF_THREAD_M
#define _POSIX_TIMERS
#define __NO_EXT_QNX
#include "config.h"
#include <stdlib.h>
#include <math.h>
#include <time.h>
/* Work around __block being used by glibc */
#ifdef __GLIBC__
# undef __USE_XOPEN
#endif
#include "platform.h"
#ifndef OF_WINDOWS
# include <unistd.h>
#endif
#ifdef OF_HAVE_SCHED_YIELD
# include <sched.h>
#endif
#ifdef OF_WII
# define BOOL OGC_BOOL
# define nanosleep ogc_nanosleep
# include <ogcsys.h>
# undef BOOL
# undef nanosleep
#endif
#ifdef OF_NINTENDO_3DS
# include <3ds/svc.h>
#endif
#import "OFThread.h"
#import "OFThread+Private.h"
#import "OFRunLoop.h"
#import "OFString.h"
#import "OFList.h"
#import "OFDate.h"
#import "OFDictionary.h"
#import "OFAutoreleasePool.h"
#import "OFAutoreleasePool+Private.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 "OFThreadJoinFailedException.h"
# import "OFThreadStartFailedException.h"
# import "OFThreadStillRunningException.h"
#endif
#ifdef OF_HAVE_ATOMIC_OPS
# import "atomic.h"
#endif
#ifdef __DJGPP__
# define lrint(x) rint(x)
# define useconds_t unsigned int
#endif
#ifdef OF_HAVE_THREADS
# import "threading.h"
static of_tlskey_t threadSelfKey;
static OFThread *mainThread;
static void
callMain(id object)
{
OFThread *thread = (OFThread*)object;
if (!of_tlskey_set(threadSelfKey, thread))
@throw [OFInitializationFailedException
exceptionWithClass: [thread class]];
thread->_pool = objc_autoreleasePoolPush();
/*
* Nasty workaround for thread implementations which can't return a
* pointer on join.
*/
# ifdef OF_HAVE_BLOCKS
if (thread->_threadBlock != NULL)
thread->_returnValue = [thread->_threadBlock() retain];
else
# endif
thread->_returnValue = [[thread main] retain];
[thread handleTermination];
thread->_running = OF_THREAD_WAITING_FOR_JOIN;
objc_autoreleasePoolPop(thread->_pool);
[OFAutoreleasePool OF_handleThreadTermination];
[thread release];
}
#endif
@implementation OFThread
#ifdef OF_HAVE_THREADS
# ifdef OF_HAVE_BLOCKS
@synthesize threadBlock = _threadBlock;
# endif
+ (void)initialize
{
if (self != [OFThread class])
return;
if (!of_tlskey_new(&threadSelfKey))
@throw [OFInitializationFailedException
exceptionWithClass: self];
}
+ (instancetype)thread
{
return [[[self alloc] init] autorelease];
}
# ifdef OF_HAVE_BLOCKS
+ (instancetype)threadWithThreadBlock: (of_thread_block_t)threadBlock
{
return [[[self alloc] initWithThreadBlock: threadBlock] autorelease];
}
# endif
+ (OFThread*)currentThread
{
return of_tlskey_get(threadSelfKey);
}
+ (OFThread*)mainThread
{
return mainThread;
}
+ (OFMutableDictionary*)threadDictionary
{
OFThread *thread = of_tlskey_get(threadSelfKey);
if (thread->_threadDictionary == nil)
thread->_threadDictionary = [[OFMutableDictionary alloc] init];
return thread->_threadDictionary;
}
#endif
+ (void)sleepForTimeInterval: (of_time_interval_t)timeInterval
{
if (timeInterval < 0)
return;
#if defined(OF_WINDOWS)
if (timeInterval * 1000 > UINT_MAX)
@throw [OFOutOfRangeException exception];
Sleep((unsigned int)(timeInterval * 1000));
#elif defined(HAVE_NANOSLEEP)
struct timespec rqtp;
rqtp.tv_sec = (time_t)timeInterval;
rqtp.tv_nsec = lrint((timeInterval - rqtp.tv_sec) * 1000000000);
if (rqtp.tv_sec != floor(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();
#elif defined(OF_NINTENDO_3DS)
if (timeInterval * 1000000000 > INT64_MAX)
@throw [OFOutOfRangeException exception];
svcSleepThread((int64_t)(timeInterval * 1000000000));
#else
if (timeInterval > UINT_MAX)
@throw [OFOutOfRangeException exception];
sleep((unsigned int)timeInterval);
usleep((useconds_t)lrint(
(timeInterval - floor(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 = of_tlskey_get(threadSelfKey);
if (thread != nil) {
thread->_returnValue = [object retain];
[thread handleTermination];
thread->_running = OF_THREAD_WAITING_FOR_JOIN;
objc_autoreleasePoolPop(thread->_pool);
}
[OFAutoreleasePool OF_handleThreadTermination];
[thread release];
of_thread_exit();
}
+ (void)OF_createMainThread
{
mainThread = [[OFThread alloc] init];
mainThread->_thread = of_thread_current();
if (!of_tlskey_set(threadSelfKey, mainThread))
@throw [OFInitializationFailedException
exceptionWithClass: self];
}
- init
{
self = [super init];
@try {
if (!of_thread_attr_init(&_attr))
@throw [OFInitializationFailedException
exceptionWithClass: [self class]];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
# ifdef OF_HAVE_BLOCKS
- initWithThreadBlock: (of_thread_block_t)threadBlock
{
self = [self init];
@try {
_threadBlock = [threadBlock 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;
}
- (void)start
{
if (_running == OF_THREAD_RUNNING)
@throw [OFThreadStillRunningException
exceptionWithThread: self];
if (_running == OF_THREAD_WAITING_FOR_JOIN) {
of_thread_detach(_thread);
[_returnValue release];
}
[self retain];
_running = OF_THREAD_RUNNING;
if (!of_thread_new(&_thread, callMain, self, &_attr)) {
[self release];
@throw [OFThreadStartFailedException exceptionWithThread: self];
}
if (_name != nil)
of_thread_set_name(_thread, [_name UTF8String]);
else
of_thread_set_name(_thread, class_getName([self class]));
}
- (id)join
{
if (_running == OF_THREAD_NOT_RUNNING || !of_thread_join(_thread))
@throw [OFThreadJoinFailedException exceptionWithThread: self];
_running = OF_THREAD_NOT_RUNNING;
return _returnValue;
}
- copy
{
return [self retain];
}
- (OFRunLoop*)runLoop
{
# ifdef OF_HAVE_ATOMIC_OPS
if (_runLoop == nil) {
OFRunLoop *tmp = [[OFRunLoop alloc] init];
if (!of_atomic_ptr_cmpswap((void**)&_runLoop, nil, tmp))
[tmp release];
}
# else
@synchronized (self) {
if (_runLoop == nil)
_runLoop = [[OFRunLoop alloc] init];
}
# endif
return [[_runLoop retain] autorelease];
}
- (OFString*)name
{
return [[_name copy] autorelease];
}
- (void)setName: (OFString*)name
{
OFString *old = name;
_name = [name copy];
[old release];
if (_running == OF_THREAD_RUNNING)
of_thread_set_name(_thread, (_name != nil
? [_name UTF8String] : class_getName([self class])));
}
- (float)priority
{
return _attr.priority;
}
- (void)setPriority: (float)priority
{
if (_running == OF_THREAD_RUNNING)
@throw [OFThreadStillRunningException
exceptionWithThread: self];
_attr.priority = priority;
}
- (size_t)stackSize
{
return _attr.stackSize;
}
- (void)setStackSize: (size_t)stackSize
{
if (_running == OF_THREAD_RUNNING)
@throw [OFThreadStillRunningException
exceptionWithThread: self];
_attr.stackSize = stackSize;
}
- (void)dealloc
{
if (_running == OF_THREAD_RUNNING)
@throw [OFThreadStillRunningException
exceptionWithThread: 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);
[_returnValue release];
# ifdef OF_HAVE_BLOCKS
[_threadBlock release];
# endif
[super dealloc];
}
#else
- init
{
OF_INVALID_INIT_METHOD
}
#endif
@end