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hacks for old system

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/performance/trunk@32446 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Richard Frith-MacDonald 2011-03-04 08:14:22 +00:00
parent 2e05fded5f
commit 225cf05f9e
2 changed files with 16 additions and 3 deletions
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9
GSIOThreadPool.h
View file

@ -36,7 +36,10 @@ typedef unsigned int NSUInteger;
* Operations are performed on these threads using the standard * Operations are performed on these threads using the standard
* -performSelector:onThread:withObject:waitUntilDone: method ... the * -performSelector:onThread:withObject:waitUntilDone: method ... the
* pool is simply used to keep track of allocation of threads so that * pool is simply used to keep track of allocation of threads so that
* you can share jobs between them. * you can share jobs between them.<br />
* NB. The threading API in OSX 10.4 and earlier is incapable of supporting
* this functionality ... in that case this class cannot be instantiated
* and initialised.
*/ */
@interface GSIOThreadPool : NSObject @interface GSIOThreadPool : NSObject
{ {
@ -54,7 +57,7 @@ typedef unsigned int NSUInteger;
*/ */
+ (GSIOThreadPool*) sharedPool; + (GSIOThreadPool*) sharedPool;
/** Seects a thread from the pool to be used for some job. /** Selects a thread from the pool to be used for some job.
*/ */
- (NSThread*) acquireThread; - (NSThread*) acquireThread;
@ -68,7 +71,7 @@ typedef unsigned int NSUInteger;
/** Specify the maximum number of threads in the pool (the actual number /** Specify the maximum number of threads in the pool (the actual number
* used may be lower than this value).<br /> * used may be lower than this value).<br />
* Default is 2.<br /> * Default is 0 (no thread pooling in use).<br />
* The pool creates threads on demand up to the specified limit (or a lower * The pool creates threads on demand up to the specified limit (or a lower
* limit if dictated by system resources) but will not destroy idle threads * limit if dictated by system resources) but will not destroy idle threads
* unless the limit is subsequently lowered.<br /> * unless the limit is subsequently lowered.<br />

10
GSIOThreadPool.m
View file

@ -50,6 +50,7 @@
[NSThread exit]; [NSThread exit];
} }
#if defined(GNUSTEP) || (MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_4)
- (id) init - (id) init
{ {
self = [super initWithTarget: self selector: @selector(run) object: nil]; self = [super initWithTarget: self selector: @selector(run) object: nil];
@ -59,6 +60,7 @@
} }
return self; return self;
} }
#endif
/* Run the thread's main runloop until terminated. /* Run the thread's main runloop until terminated.
*/ */
@ -170,6 +172,7 @@ best(NSMutableArray *a)
- (void) dealloc - (void) dealloc
{ {
#if defined(GNUSTEP) || (MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_4)
GSIOThread *thread; GSIOThread *thread;
NSDate *when = [NSDate dateWithTimeIntervalSinceNow: timeout]; NSDate *when = [NSDate dateWithTimeIntervalSinceNow: timeout];
@ -185,16 +188,23 @@ best(NSMutableArray *a)
[threads release]; [threads release];
[poolLock unlock]; [poolLock unlock];
[poolLock release]; [poolLock release];
#endif
[super dealloc]; [super dealloc];
} }
- (id) init - (id) init
{ {
#if defined(GNUSTEP) || (MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_4)
if ((self = [super init]) != nil) if ((self = [super init]) != nil)
{ {
poolLock = [NSLock new]; poolLock = [NSLock new];
threads = [NSMutableArray new]; threads = [NSMutableArray new];
} }
#else
[self release];
NSLog(@"WARNING, your OSX system is too old to use GSIOthreadPool");
return nil;
#endif
return self; return self;
} }