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what every web and app developer should know about multithreading

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Ilya Haykinson
Ilya Haykinson

talk at Barcamp LA 6

TechnologieSports
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what every web and app developer should know about multithreading
why
why ,[object Object],[object Object],[object Object],[object Object],[object Object]
threads ,[object Object]
threads ,[object Object],[object Object],[object Object],[object Object]
thread process versus
thread ,[object Object],[object Object],[object Object],[object Object],versus
[object Object],[object Object],[object Object],[object Object],process versus
threads
threads ,[object Object],[object Object],[object Object],[object Object]
synchronization ,[object Object],[object Object],Thread A my_local_x = x set x = my_local_x + 1 Thread B my_local_x = x set x = my_local_x + 2
synchronization ,[object Object],[object Object],Thread A my_local_x = x set x = my_local_x + 1 Thread B my_local_x = x set x = my_local_x + 2 ,[object Object]
synchronization ,[object Object],[object Object],Thread A my_local_x = x set x = my_local_x + 1 Thread B my_local_x = x set x = my_local_x + 2 ,[object Object]
synchronization ,[object Object],[object Object],Thread A my_local_x = x set x = my_local_x + 1 Thread B my_local_x = x set x = my_local_x + 2 ,[object Object]
synchronization ,[object Object],[object Object],[object Object],[object Object],[object Object],list.sort()
synchronization ,[object Object],[object Object],[object Object],[object Object],[object Object],list.sort() newlist = list.sort()
synchronization ,[object Object],[object Object],[object Object]
synchronization Thread A Thread B Main Thread Start A Start B Join A and B Read data
synchronization ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
synchronization ,[object Object]
synchronization ,[object Object]
synchronization ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
synchronization ,[object Object],[object Object],[object Object],[object Object],[object Object]
synchronization ,[object Object],[object Object],[object Object]
examples ,[object Object],[object Object],[object Object],[object Object],[object Object]
example
example
example
example
bad threading
bad threading ,[object Object],[object Object],[object Object],[object Object]
bad threading ,[object Object],[object Object],[object Object],[object Object],[object Object]
photo credits CC BY-NC-ND 2.0 – Clemens Schwaighofer – http://flickr.com/photos/gullevek/257135337/ CC BY-NC-SA 2.0 – Robert Parviainen – http://flickr.com/photos/rtv/2574427997/ CC BY-NC-ND 2.0 – Sudhir Srinivasa – http://flickr.com/photos/sudhirs/111760673/ CC BY-NC-SA 2.0 – Rick Harrison – http://flickr.com/photos/sovietuk/2657691123/ CC BY-NC-ND 2.0 – Joe Chiapputo – http://flickr.com/photos/cocoabeachjoe/1924133031/ CC BY-ND 2.0 – Craig Allen – http://flickr.com/photos/anabadili/2759448841/

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what every web and app developer should know about multithreading

  • 1. what every web and app developer should know about multithreading
  • 2. why
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  • 18. synchronization Thread A Thread B Main Thread Start A Start B Join A and B Read data
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  • 31.
  • 32.
  • 33. photo credits CC BY-NC-ND 2.0 – Clemens Schwaighofer – http://flickr.com/photos/gullevek/257135337/ CC BY-NC-SA 2.0 – Robert Parviainen – http://flickr.com/photos/rtv/2574427997/ CC BY-NC-ND 2.0 – Sudhir Srinivasa – http://flickr.com/photos/sudhirs/111760673/ CC BY-NC-SA 2.0 – Rick Harrison – http://flickr.com/photos/sovietuk/2657691123/ CC BY-NC-ND 2.0 – Joe Chiapputo – http://flickr.com/photos/cocoabeachjoe/1924133031/ CC BY-ND 2.0 – Craig Allen – http://flickr.com/photos/anabadili/2759448841/

Notes de l'éditeur

  1. By-nc-nd 2.0 Clemens Schwaighofer http://flickr.com/photos/gullevek/257135337/ Introduction to threading Time for questions at the end; if it’s really brief, interrupt me