Advanced Search

Posted By

nesium on 11/26/08

Tagged

Versions (?)

Last Edited at 11/26/08 01:48pm

Statistics

Viewed 794 times
Favorited by 0 user(s)

Related snippets

1011
PHP5 Singleton Class
875
PHP5 Singleton pattern
1134
Singleton class model
532
Singleton classes
1
Singleton
765
Singleton Pattern
767
Thread-safe singleton pattern in C#
835
Javascript Singleton Pattern

Synthesize singleton

/ Published in: Other
Save to your folder(s)

Expand | Embed | Plain Text

Copy this code and paste it in your HTML 
  1. //
  2. //  SynthesizeSingleton.h
  3. //
  4. //  Created by Matt Gallagher on 20/10/08.
  5. //
  6.  
  7. #define SYNTHESIZE_SINGLETON_FOR_CLASS(classname) 
  8.  
  9. static classname *shared##classname = nil; 
  10.  
  11. + (classname *)shared##classname 
  12. { 
  13. 	@synchronized(self) 
  14. 	{ 
  15. 		if (shared##classname == nil) 
  16. 		{ 
  17. 			[[self alloc] init]; 
  18. 		} 
  19. 	} 
  20.  
  21. 	return shared##classname; 
  22. } 
  23.  
  24. + (id)allocWithZone:(NSZone *)zone 
  25. { 
  26. 	@synchronized(self) 
  27. 	{ 
  28. 		if (shared##classname == nil) 
  29. 		{ 
  30. 			shared##classname = [super allocWithZone:zone]; 
  31. 			return shared##classname; 
  32. 		} 
  33. 	} 
  34.  
  35. 	return nil; 
  36. } 
  37.  
  38. - (id)copyWithZone:(NSZone *)zone 
  39. { 
  40. 	return self; 
  41. } 
  42.  
  43. - (id)retain 
  44. { 
  45. 	return self; 
  46. } 
  47.  
  48. - (NSUInteger)retainCount 
  49. { 
  50. 	return NSUIntegerMax; 
  51. } 
  52.  
  53. - (void)release 
  54. { 
  55. } 
  56.  
  57. - (id)autorelease 
  58. { 
  59. 	return self; 
  60. }
  61.  

Report this snippet


Comments

RSS Icon Subscribe to comments

You need to login to post a comment.