/*
* Copyright (c) 2008, 2009, 2010, 2011
* 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"
#ifndef _WIN32
# include <unistd.h>
# include <sched.h>
#else
# include <windows.h>
#endif
#import "OFThread.h"
#import "OFList.h"
#import "OFDate.h"
#import "OFAutoreleasePool.h"
#import "OFExceptions.h"
#import "threading.h"
static OFList *tlskeys;
static of_tlskey_t thread_self;
static id
call_main(id obj)
{
if (!of_tlskey_set(thread_self, obj))
@throw [OFInitializationFailedException
newWithClass: [obj class]];
/*
* Nasty workaround for thread implementations which can't return a
* value on join.
*/
((OFThread*)obj)->retval = [[obj main] retain];
[obj handleTermination];
((OFThread*)obj)->running = OF_THREAD_WAITING_FOR_JOIN;
[OFTLSKey callAllDestructors];
[OFAutoreleasePool releaseAll];
[obj release];
return 0;
}
@implementation OFThread
+ (void)initialize
{
if (self != [OFThread class])
return;
if (!of_tlskey_new(&thread_self))
@throw [OFInitializationFailedException newWithClass: self];
}
+ thread
{
return [[[self alloc] init] autorelease];
}
+ threadWithObject: (id)obj
{
return [[[self alloc] initWithObject: obj] autorelease];
}
+ (void)setObject: (id)obj
forTLSKey: (OFTLSKey*)key
{
id old = of_tlskey_get(key->key);
if (!of_tlskey_set(key->key, [obj retain]))
@throw [OFInvalidArgumentException newWithClass: self
selector: _cmd];
[old release];
}
+ (id)objectForTLSKey: (OFTLSKey*)key
{
return [[of_tlskey_get(key->key) retain] autorelease];
}
+ (OFThread*)currentThread
{
return [[of_tlskey_get(thread_self) retain] autorelease];
}
+ (void)sleepForTimeInterval: (int64_t)sec
{
if (sec < 0)
@throw [OFOutOfRangeException newWithClass: self];
#ifndef _WIN32
sleep(sec);
#else
Sleep(sec * 1000);
#endif
}
+ (void)sleepForTimeInterval: (int64_t)sec
microseconds: (uint32_t)usec
{
if (sec < 0)
@throw [OFOutOfRangeException newWithClass: self];
#ifndef _WIN32
sleep(sec);
usleep(usec);
#else
Sleep(sec * 1000 + usec / 1000);
#endif
}
+ (void)sleepUntilDate: (OFDate*)date
{
OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
OFDate *now = [OFDate date];
int64_t sec;
uint32_t usec;
if ((sec = [date timeIntervalSinceDate: now]) < 0)
@throw [OFOutOfRangeException newWithClass: self];
usec = [date microsecondsOfTimeIntervalSinceDate: now];
[pool release];
#ifndef _WIN32
sleep(sec);
usleep(usec);
#else
Sleep(sec * 1000 + usec / 1000);
#endif
}
+ (void)yield
{
#ifndef _WIN32
sched_yield();
#else
Sleep(0);
#endif
}
+ (void)terminate
{
[self terminateWithObject: nil];
}
+ (void)terminateWithObject: (id)obj
{
OFThread *thread = of_tlskey_get(thread_self);
if (thread != nil) {
thread->retval = [obj retain];
[thread handleTermination];
thread->running = OF_THREAD_WAITING_FOR_JOIN;
}
[OFTLSKey callAllDestructors];
[OFAutoreleasePool releaseAll];
[thread release];
of_thread_exit();
}
- initWithObject: (id)obj
{
self = [super init];
@try {
object = [obj retain];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (id)main
{
@throw [OFNotImplementedException newWithClass: isa
selector: _cmd];
return nil;
}
- (void)handleTermination
{
}
- (void)start
{
if (running == OF_THREAD_RUNNING)
@throw [OFThreadStillRunningException newWithClass: isa];
[self retain];
if (!of_thread_new(&thread, call_main, self)) {
[self release];
@throw [OFThreadStartFailedException newWithClass: isa];
}
running = OF_THREAD_RUNNING;
}
- (id)join
{
if (running == OF_THREAD_NOT_RUNNING || !of_thread_join(thread))
@throw [OFThreadJoinFailedException newWithClass: isa];
running = OF_THREAD_NOT_RUNNING;
return retval;
}
- (void)dealloc
{
if (running == OF_THREAD_RUNNING)
@throw [OFThreadStillRunningException newWithClass: isa];
[object release];
[retval 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*)iter->object)->destructor(iter->object);
}
}
- init
{
self = [super init];
@try {
if (!of_tlskey_new(&key))
@throw [OFInitializationFailedException
newWithClass: isa];
initialized = YES;
@synchronized (tlskeys) {
listobj = [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 (listobj != NULL) {
@synchronized (tlskeys) {
[tlskeys removeListObject: listobj];
}
}
[super dealloc];
}
@end
@implementation OFMutex
+ mutex
{
return [[[self alloc] init] autorelease];
}
- init
{
self = [super init];
if (!of_mutex_new(&mutex)) {
Class c = isa;
[self release];
@throw [OFInitializationFailedException newWithClass: c];
}
initialized = YES;
return self;
}
- (void)lock
{
if (!of_mutex_lock(&mutex))
@throw [OFMutexLockFailedException newWithClass: isa];
}
- (BOOL)tryLock
{
return of_mutex_trylock(&mutex);
}
- (void)unlock
{
if (!of_mutex_unlock(&mutex))
@throw [OFMutexUnlockFailedException newWithClass: isa];
}
- (void)dealloc
{
if (initialized)
of_mutex_free(&mutex);
[super dealloc];
}
@end