/*
* 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"
#include <stdlib.h>
#import "OFAutoreleasePool.h"
#import "OFArray.h"
#import "OFInitializationFailedException.h"
#import "OFNotImplementedException.h"
#ifdef OF_THREADS
# import "threading.h"
static of_tlskey_t first_key, last_key;
#else
static OFAutoreleasePool *first = nil, *last = nil;
#endif
#define GROW_SIZE 16
@implementation OFAutoreleasePool
#ifdef OF_THREADS
+ (void)initialize
{
if (self != [OFAutoreleasePool class])
return;
if (!of_tlskey_new(&first_key) || !of_tlskey_new(&last_key))
@throw [OFInitializationFailedException newWithClass: self];
}
#endif
+ (void)addObject: (id)obj
{
#ifdef OF_THREADS
id last = of_tlskey_get(last_key);
#endif
if (last == nil) {
@try {
[[self alloc] init];
} @catch (id e) {
[obj release];
@throw e;
}
#ifdef OF_THREADS
last = of_tlskey_get(last_key);
#endif
}
if (last == nil) {
[obj release];
@throw [OFInitializationFailedException newWithClass: self];
}
@try {
[last addObject: obj];
} @catch (id e) {
[obj release];
@throw e;
}
}
+ (void)releaseAll
{
#ifdef OF_THREADS
[of_tlskey_get(first_key) release];
#else
[first release];
#endif
}
- init
{
self = [super init];
@try {
#ifdef OF_THREADS
id first = of_tlskey_get(first_key);
prev = of_tlskey_get(last_key);
if (!of_tlskey_set(last_key, self))
@throw [OFInitializationFailedException
newWithClass: isa];
#else
prev = last;
last = self;
#endif
if (first == nil) {
#ifdef OF_THREADS
if (!of_tlskey_set(first_key, self)) {
of_tlskey_set(last_key, prev);
@throw [OFInitializationFailedException
newWithClass: isa];
}
#else
first = self;
#endif
}
if (prev != nil)
prev->next = self;
size = GROW_SIZE;
objects = [self allocMemoryForNItems: GROW_SIZE
withSize: sizeof(id)];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)addObject: (id)obj
{
if (count + 1 > size) {
objects = [self resizeMemory: objects
toNItems: size + GROW_SIZE
withSize: sizeof(id)];
size += GROW_SIZE;
}
objects[count] = obj;
count++;
}
- (void)releaseObjects
{
size_t i;
[next releaseObjects];
for (i = 0; i < count; i++)
[objects[i] release];
count = 0;
}
- (void)release
{
[self dealloc];
}
- (void)drain
{
[self dealloc];
}
- (void)dealloc
{
size_t i;
[next dealloc];
for (i = 0; i < count; i++)
[objects[i] release];
/*
* If of_tlskey_set fails, this is a real problem. The best we can do
* is to not change the pool below the current pool and stop
* deallocation. This way, new objects will be added to the current
* pool, but released when the pool below gets released - and maybe
* the pool itself will be released as well then, because maybe
* of_tlskey_set will work this time.
*/
#ifdef OF_THREADS
if (!of_tlskey_set(last_key, prev))
return;
#else
last = prev;
#endif
if (prev != nil)
prev->next = nil;
/*
* If of_tlskey_set fails here, this is even worse, as this will
* definitely be a memory leak. But this should never happen anyway.
*/
#ifdef OF_THREADS
if (of_tlskey_get(first_key) == self)
if (!of_tlskey_set(first_key, nil))
return;
#else
if (first == self)
first = nil;
#endif
[super dealloc];
}
- retain
{
@throw [OFNotImplementedException newWithClass: isa
selector: _cmd];
}
- autorelease
{
@throw [OFNotImplementedException newWithClass: isa
selector: _cmd];
}
@end