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Closes #349 DelegatingScheduler: Bill Pugh Singleton Implementation #350

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Closes #349 DelegatingScheduler: Bill Pugh Singleton Implementation #350

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@magicprinc magicprinc commented Nov 26, 2022 •
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Closes #349

@magicprinc magicprinc changed the title #349 DelegatingScheduler: Bill Pugh Singleton Implementation Closes #349 DelegatingScheduler: Bill Pugh Singleton Implementation Nov 26, 2022
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Second commit contains:

  1. bug fix in DelegatingScheduler#schedule: (delay == 0) → (delay <= 0)

  2. fix, if user's executor is actually commonPool() without parallelism. Similar to CompletableFuture.screenExecutor

  3. Use less memory: don't capture variable if executor is commonPool (Lambda can access it without capturing through static field.

@magicprinc
Optimizations
953aa91 
pre-calculate everything
use less memory
compact lambdas
@magicprinc
DelegatingScheduler 100% test coverage
2651f47 
-1 lambda
@magicprinc
Boss level: all fet is removed
9fe5b90 
ScheduledCompletableFuture doesn't have to keep `time`: it can simply call delegate
ThreadFactory.newThread: setName can be done in ctor
if → ? :
@magicprinc
-1 wrapper (Runnable is wrapped in Callable inside ExecutorService), …
60f9b82 
…so use Callable lambda instead of Runnable
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DelegatingScheduler singletons in modern style
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