Grand Central Dispatch
•
2 likes•1,046 views
My talk on GCD at Cocoaheads Stockholm. Video of the talk: http://bambuser.com/channel/rasmus/broadcast/358572
More Related Content
What's hot
What's hot (19)
Viewers also liked
Viewers also liked (15)
Similar to Grand Central Dispatch
Similar to Grand Central Dispatch (20)
Recently uploaded
Recently uploaded (20)
Grand Central Dispatch
- 1. Grand Central Dispatch Dispatch Dispatch
- 2. Work dispatch_block_t or dispatch_function_t dispatch_queue_t dispatch_source_t dispatch_group_t Queue
- 3. ^ { for ( int i = 0 ; i < something very large; i++) { do_heavy_work(); and_keep_doing_it(); } } dispatch_async (..., );
- 4. dispatch_async_f(..., ); function foo(void *context) { for ( int i = 0 ; i < something very large; i++) { do_heavy_work(); and_keep_doing_it(); } } NULL , &foo
- 5. ^ { for ( int i = 0 ; i < something very large; i++) { do_heavy_work(); sum += and_keep_doing_it(); } } dispatch_sync (..., ); __block int sum = 0 ; NSRunAlertPanel ( @"Found the sum!" , @"It's: %d" , @"OK" , nil , nil , sum);
- 6. Main queue Global queues dispatch_get_main_queue () dispatch_get_global_queue ( X , 0 ) DISPATCH_QUEUE_PRIORITY_LOW DISPATCH_QUEUE_PRIORITY_DEFAULT DISPATCH_QUEUE_PRIORITY_HIGH Custom queues dispatch_queue_create() serial concurrent serial
- 7. ^ { for ( int i = 0 ; i < something very large; i++) { do_heavy_work(); sum += and_keep_doing_it(); } } dispatch_async ( dispatch_get_global_queue ( 0 , 0 ) , ); __block int sum = 0 ; NSRunAlertPanel ( @"Found the sum!" , @"It's: %d" , @"OK" , nil , nil , sum);
- 8. ^ { for ( int i = 0 ; i < something very large; i++) { do_heavy_work(); sum += and_keep_doing_it(); } dispatch_async ( dispatch_get_main_queue () , ); } dispatch_async ( dispatch_get_global_queue ( 0 , 0 ) , ); __block int sum = 0 ; ^ { NSRunAlertPanel ( @"Found the sum!" , @"It's: %d" , @"OK" , nil , nil , sum); }
- 9. ^ { do_heavy_work(); sum += and_keep_doing_it(); } dispatch_queue_t global = dispatch_get_global_queue( 0 , 0 ); dispatch_apply (something very large, global, ); __block int sum = 0 ; NSRunAlertPanel ( @"Found the sum!" , @"It's: %d" , @"OK" , nil , nil , sum );
- 10. ^ { do_heavy_work(); sum += and_keep_doing_it(); } dispatch_queue_t global = dispatch_get_global_queue( 0 , 0 ); dispatch_apply (something very large, global, ); __block int sum = 0 ; NSRunAlertPanel ( @"Found the sum!" , @"It's: %d" , @"OK" , nil , nil , sum );
- 11. ^ { do_heavy_work(); sum += and_keep_doing_it(); } dispatch_queue_t global = dispatch_get_global_queue( 0 , 0 ); dispatch_group_t group = dispatch_group_create (); for ( int i = 0 ; i < something very large; i++) { dispatch_group_async (group, queue, ); } __block int sum = 0 ; dispatch_group_notify (group, queue, ); dispatch_release (group); NSRunAlertPanel ( @"Found the sum!" , @"It's: %d" , @"OK" , nil , nil , sum );
- 13. http://mikeash.com/?page=pyblog http://thirdcog.eu/pwcblocks/ http://thirdcog.eu/pwcblocks/ http://thirdcog.eu/pwcblocks/