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Simplify by assuming we will run in a multithreaded environment

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Richard Frith-Macdonald 2021-01-14 09:29:06 +00:00
parent 99e01fe21e
commit 6eb08935ea
1 changed files with 2 additions and 44 deletions
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46
GSCache.m
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@ -58,8 +58,6 @@
#endif
@interface GSCache (Private)
+ (void) _becomeThreaded: (NSNotification*)n;
- (void) _createLock;
- (void) _useDefaults: (NSNotification*)n;
@end
@ -220,25 +218,7 @@ static void removeItem(GSCacheItem *item, GSCacheItem **first)
if (allCaches == 0)
{
itemOffset = class_getInstanceSize(self);
allCaches
= NSCreateHashTable(NSNonRetainedObjectHashCallBacks, 0);
if ([NSThread isMultiThreaded] == YES)
{
[self _becomeThreaded: nil];
}
else
{
/* If and when we become multi-threaded, the +_becomeThreaded:
* method will remove us as an observer and will create a lock
* for the table of all caches, then ask each cache to create
* its own lock.
*/
[[NSNotificationCenter defaultCenter]
addObserver: self
selector: @selector(_becomeThreaded:)
name: NSWillBecomeMultiThreadedNotification
object: nil];
}
allCaches = NSCreateHashTable(NSNonRetainedObjectHashCallBacks, 0);
GSTickerTimeNow();
}
}
@ -310,10 +290,7 @@ static void removeItem(GSCacheItem *item, GSCacheItem **first)
{
if (nil != (self = [super init]))
{
if ([NSThread isMultiThreaded] == YES)
{
[self _createLock];
}
my->lock = [NSRecursiveLock new];
my->contents = NSCreateMapTable(NSObjectMapKeyCallBacks,
NSObjectMapValueCallBacks, 0);
[allCachesLock lock];
@ -907,25 +884,6 @@ static void removeItem(GSCacheItem *item, GSCacheItem **first)
@end
@implementation GSCache (Private)
+ (void) _becomeThreaded: (NSNotification*)n
{
NSHashEnumerator e;
GSCache *c;
[[NSNotificationCenter defaultCenter] removeObserver: self
name: NSWillBecomeMultiThreadedNotification object: nil];
allCachesLock = [NSRecursiveLock new];
e = NSEnumerateHashTable(allCaches);
while ((c = (GSCache*)NSNextHashEnumeratorItem(&e)) != nil)
{
[c _createLock];
}
NSEndHashTableEnumeration(&e);
}
- (void) _createLock
{
my->lock = [NSRecursiveLock new];
}
- (void) _useDefaults: (NSNotification*)n
{
NSUserDefaults *defs = [NSUserDefaults standardUserDefaults];