Beginning Ballerina Programming by Anjana Fernando & Lakmal Warusawithana

Author:Anjana Fernando & Lakmal Warusawithana
Language: eng
Format: epub
ISBN: 9781484251393
Publisher: Apress

Let’s remove the comment from line 4 and line 29 and run the code.$ ballerina run workers_iteration2.bal

Worker execution started

Worker execution finished

w1: sum of first 10000000 positive numbers = 50000005000000

w2: sum of squares of first 10000000 positive numbers = 1291990006563070912

Now you can see that line 4 and line 29 executed and printed before the two workers print the sum of n and the sum of n squares. This is because if explicit workers are not mentioned within worker blocks, the function code will belong to a single unnamed default worker.

If you want to wait for both workers to get printed sums before line 29 gets printed, you can uncomment line 27, ( _ = wait {w1, w2}; ), which makes it wait before it executes.$ ballerina run workers_iteration2.bal

Worker execution started

w1: sum of first 10000000 positive numbers = 50000005000000

w2: sum of squares of first 10000000 positive numbers = 1291990006563070912

Worker execution finished

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