/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012
* Jonathan Schleifer <js@webkeks.org>
*
* 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.
*/
#include "config.h"
#define OF_THREAD_M
#define __NO_EXT_QNX
#include <math.h>
#ifndef _WIN32
# include <unistd.h>
# include <sched.h>
#endif
#import "OFThread.h"
#import "OFList.h"
#import "OFDate.h"
#import "OFSortedList.h"
#import "OFRunLoop.h"
#import "OFAutoreleasePool.h"
#ifdef _WIN32
# include <windows.h>
#endif
#import "OFConditionBroadcastFailedException.h"
#import "OFConditionSignalFailedException.h"
#import "OFConditionStillWaitingException.h"
#import "OFConditionWaitFailedException.h"
#import "OFInitializationFailedException.h"
#import "OFInvalidArgumentException.h"
#import "OFMutexLockFailedException.h"
#import "OFMutexStillLockedException.h"
#import "OFMutexUnlockFailedException.h"
#import "OFNotImplementedException.h"
#import "OFOutOfRangeException.h"
#import "OFThreadJoinFailedException.h"
#import "OFThreadStartFailedException.h"
#import "OFThreadStillRunningException.h"
#import "atomic.h"
#import "autorelease.h"
#import "threading.h"
static OFList *TLSKeys;
static of_tlskey_t threadSelfKey;
static OFThread *mainThread;
static id
call_main(id object)
{
OFThread *thread = (OFThread*)object;
if (!of_tlskey_set(threadSelfKey, thread))
@throw [OFInitializationFailedException
exceptionWithClass: [thread class]];
objc_autoreleasePoolPush();
/*
* Nasty workaround for thread implementations which can't return a
* value on join.
*/
#ifdef OF_HAVE_BLOCKS
if (thread->block != NULL)
thread->returnValue = [thread->block(thread->object) retain];
else
#endif
thread->returnValue = [[thread main] retain];
[thread handleTermination];
thread->running = OF_THREAD_WAITING_FOR_JOIN;
[OFTLSKey OF_callAllDestructors];
#ifdef OF_OBJFW_RUNTIME
/*
* As the values returned by objc_autoreleasePoolPush() in the ObjFW
* runtime are not actually pointers, but sequential numbers, 0 means
* we pop everything.
*/
objc_autoreleasePoolPop(0);
#endif
[thread release];
return 0;
}
@implementation OFThread
#if defined(OF_HAVE_PROPERTIES) && defined(OF_HAVE_BLOCKS)
@synthesize block;
#endif
+ (void)initialize
{
if (self != [OFThread class])
return;
if (!of_tlskey_new(&threadSelfKey))
@throw [OFInitializationFailedException
exceptionWithClass: self];
}
+ (instancetype)thread
{
return [[[self alloc] init] autorelease];
}
+ (instancetype)threadWithObject: (id)object
{
return [[[self alloc] initWithObject: object] autorelease];
}
#ifdef OF_HAVE_BLOCKS
+ (instancetype)threadWithBlock: (of_thread_block_t)block
{
return [[[self alloc] initWithBlock: block] autorelease];
}
#endif
+ (void)setObject: (id)object
forTLSKey: (OFTLSKey*)key
{
id oldObject = of_tlskey_get(key->key);
if (!of_tlskey_set(key->key, [object retain]))
@throw [OFInvalidArgumentException exceptionWithClass: self
selector: _cmd];
[oldObject release];
}
+ (id)objectForTLSKey: (OFTLSKey*)key
{
return [[(id)of_tlskey_get(key->key) retain] autorelease];
}
+ (OFThread*)currentThread
{
return [[(id)of_tlskey_get(threadSelfKey) retain] autorelease];
}
+ (OFThread*)mainThread
{
return mainThread;
}
+ (void)sleepForTimeInterval: (double)seconds
{
if (seconds < 0)
@throw [OFOutOfRangeException exceptionWithClass: self];
#ifndef _WIN32
if (seconds > UINT_MAX)
@throw [OFOutOfRangeException exceptionWithClass: self];
sleep((unsigned int)seconds);
usleep((useconds_t)rint((seconds - floor(seconds)) * 1000000));
#else
if (seconds * 1000 > UINT_MAX)
@throw [OFOutOfRangeException exceptionWithClass: self];
Sleep((unsigned int)(seconds * 1000));
#endif
}
+ (void)sleepUntilDate: (OFDate*)date
{
double seconds = [date timeIntervalSinceNow];
#ifndef _WIN32
if (seconds > UINT_MAX)
@throw [OFOutOfRangeException exceptionWithClass: self];
sleep((unsigned int)seconds);
usleep((useconds_t)rint((seconds - floor(seconds)) * 1000000));
#else
if (seconds * 1000 > UINT_MAX)
@throw [OFOutOfRangeException exceptionWithClass: self];
Sleep((unsigned int)(seconds * 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(threadSelfKey);
if (thread != nil) {
thread->returnValue = [object retain];
[thread handleTermination];
thread->running = OF_THREAD_WAITING_FOR_JOIN;
}
[OFTLSKey OF_callAllDestructors];
#ifdef OF_OBJFW_RUNTIME
/*
* As the values returned by objc_autoreleasePoolPush() in the ObjFW
* runtime are not actually pointers, but sequential numbers, 0 means
* we pop everything.
*/
objc_autoreleasePoolPop(0);
#endif
[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];
}
- initWithObject: (id)object_
{
self = [super init];
object = [object_ retain];
return self;
}
#ifdef OF_HAVE_BLOCKS
- initWithBlock: (of_thread_block_t)block_
{
self = [super 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 *tmp = runLoop;
runLoop = nil;
[tmp release];
}
- (void)start
{
if (running == OF_THREAD_RUNNING)
@throw [OFThreadStillRunningException
exceptionWithClass: [self class]
thread: 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, call_main, self)) {
[self release];
@throw [OFThreadStartFailedException
exceptionWithClass: [self class]
thread: self];
}
}
- (id)join
{
if (running == OF_THREAD_NOT_RUNNING || !of_thread_join(thread))
@throw [OFThreadJoinFailedException
exceptionWithClass: [self class]
thread: self];
running = OF_THREAD_NOT_RUNNING;
return returnValue;
}
- (OFRunLoop*)runLoop
{
if (runLoop == nil) {
OFRunLoop *tmp = [[OFRunLoop alloc] init];
if (!of_atomic_cmpswap_ptr((void**)&runLoop, nil, tmp))
[tmp release];
}
return [[runLoop retain] autorelease];
}
- (void)dealloc
{
if (running == OF_THREAD_RUNNING)
@throw [OFThreadStillRunningException
exceptionWithClass: [self class]
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];
[runLoop release];
[super dealloc];
}
- copy
{
return [self retain];
}
@end
@implementation OFTLSKey
+ (void)initialize
{
if (self == [OFTLSKey class])
TLSKeys = [[OFList alloc] init];
}
+ (instancetype)TLSKey
{
return [[[self alloc] init] autorelease];
}
+ (instancetype)TLSKeyWithDestructor: (void(*)(id))destructor
{
return [[[self alloc] initWithDestructor: destructor] autorelease];
}
+ (void)OF_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
exceptionWithClass: [self class]];
initialized = YES;
@synchronized (TLSKeys) {
listObject = [TLSKeys appendObject: self];
}
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- initWithDestructor: (void(*)(id))destructor_
{
self = [self init];
destructor = destructor_;
return self;
}
- (void)dealloc
{
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
@implementation OFMutex
+ (instancetype)mutex
{
return [[[self alloc] init] autorelease];
}
- init
{
self = [super init];
if (!of_mutex_new(&mutex)) {
Class c = [self class];
[self release];
@throw [OFInitializationFailedException exceptionWithClass: c];
}
initialized = YES;
return self;
}
- OF_initWithoutCreatingMutex
{
return [super init];
}
- (void)lock
{
if (!of_mutex_lock(&mutex))
@throw [OFMutexLockFailedException
exceptionWithClass: [self class]
mutex: self];
}
- (BOOL)tryLock
{
return of_mutex_trylock(&mutex);
}
- (void)unlock
{
if (!of_mutex_unlock(&mutex))
@throw [OFMutexUnlockFailedException
exceptionWithClass: [self class]
mutex: self];
}
- (void)dealloc
{
if (initialized)
if (!of_mutex_free(&mutex))
@throw [OFMutexStillLockedException
exceptionWithClass: [self class]
mutex: self];
[super dealloc];
}
@end
@implementation OFRecursiveMutex
- init
{
self = [super OF_initWithoutCreatingMutex];
if (!of_rmutex_new(&rmutex)) {
Class c = [self class];
[self release];
@throw [OFInitializationFailedException exceptionWithClass: c];
}
initialized = YES;
return self;
}
- (void)lock
{
if (!of_rmutex_lock(&rmutex))
@throw [OFMutexLockFailedException
exceptionWithClass: [self class]
mutex: self];
}
- (BOOL)tryLock
{
return of_rmutex_trylock(&rmutex);
}
- (void)unlock
{
if (!of_rmutex_unlock(&rmutex))
@throw [OFMutexUnlockFailedException
exceptionWithClass: [self class]
mutex: self];
}
- (void)dealloc
{
if (initialized)
if (!of_rmutex_free(&rmutex))
@throw [OFMutexStillLockedException
exceptionWithClass: [self class]
mutex: self];
[super dealloc];
}
@end
@implementation OFCondition
+ (instancetype)condition
{
return [[[self alloc] init] autorelease];
}
- init
{
self = [super init];
if (!of_condition_new(&condition)) {
Class c = [self class];
[self release];
@throw [OFInitializationFailedException exceptionWithClass: c];
}
conditionInitialized = YES;
return self;
}
- (void)wait
{
if (!of_condition_wait(&condition, &mutex))
@throw [OFConditionWaitFailedException
exceptionWithClass: [self class]
condition: self];
}
- (void)signal
{
if (!of_condition_signal(&condition))
@throw [OFConditionSignalFailedException
exceptionWithClass: [self class]
condition: self];
}
- (void)broadcast
{
if (!of_condition_broadcast(&condition))
@throw [OFConditionBroadcastFailedException
exceptionWithClass: [self class]
condition: self];
}
- (void)dealloc
{
if (conditionInitialized)
if (!of_condition_free(&condition))
@throw [OFConditionStillWaitingException
exceptionWithClass: [self class]
condition: self];
[super dealloc];
}
@end