Integrated develop

[haxr369]

개요

1. AtomicInteger를 이용한 카운터
2. CompletableFuture를 이용한 카운터
3. Synchronized를 이용한 카운터

변경 사항

✨ Feat : 새로운 기
✅ Test : 테스트 코드 추가

추가 정보

• 각 카운터데 대해서 수행시간과 메모리 사용량을 테이블 형식으로 Readme에 작성

관련 이슈

[codecov]

Codecov Report

Attention: Patch coverage is 90.47619% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 82.75%. Comparing base (ed4626c) to head (d7e8a86).

Files	Patch %	Lines
.../concurrency/counter/CompletableFutureCounter.java	81.81%	2 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff               @@
##             develop      #32       +/-   ##
==============================================
+ Coverage      62.50%   82.75%   +20.25%     
- Complexity         4       14       +10     
==============================================
  Files              2        5        +3     
  Lines              8       29       +21     
==============================================
+ Hits               5       24       +19     
- Misses             3        5        +2     

Flag	Coverage Δ
unittests	82.75% <90.47%> (?)

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[haxr369]

Describe the bug

#32 에 AtomicCounterTest에서 아래 그림처럼 카운트 횟수를 지정하는 totalCount를 Integer.MAX_VALUE로 하면 Out Of Memory가 뜨는 문제가 발생합니다.

Caused by: java.lang.OutOfMemoryError: Java heap space
	at java.base/java.util.concurrent.AbstractExecutorService.newTaskFor(AbstractExecutorService.java:98)
	at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:122)
	at com.thread.concurrency.AtomicCounterTest.여러_더하기_수행_Executor(AtomicCounterTest.java:37)
	at java.base/java.lang.invoke.LambdaForm$DMH/0x000000a000288800.invokeVirtual(LambdaForm$DMH)
	at java.base/java.lang.invoke.LambdaForm$MH/0x000000a000190800.invoke(LambdaForm$MH)
	at java.base/java.lang.invoke.Invokers$Holder.invokeExact_MT(Invokers$Holder)

To Reproduce
Steps to reproduce the behavior:

1. Go to src/test/java/com/thread/concurrency/AtomicCounterTest.java
2. totalCount를 Integer.MAX_VALUE로 변경
3. 테스트 실행
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

[ooMia]

문제는 별도 이슈로 분리했어요

• AtomicCounter 테스트 #33

[ooMia]

우선 승인하겠습니다.