diff options
author | Pete Bentley <prb@google.com> | 2021-02-24 08:57:22 +0000 |
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committer | Gerrit Code Review <noreply-gerritcodereview@google.com> | 2021-02-24 08:57:22 +0000 |
commit | d1359663578e2a49e74ed74eb10d4b663d58cf3f (patch) | |
tree | 1331fa1b743d5d0a341f82ff555ce4c602f40ab9 /src/main/java/org/junit/internal/requests/MemoizingRequest.java | |
parent | e938015d2d5a2157ed20eb622fcd9750a12bb4af (diff) | |
parent | 7db56fab8af99e12a7644349d14109235ec584b9 (diff) | |
download | junit-d1359663578e2a49e74ed74eb10d4b663d58cf3f.tar.gz |
Merge changes I8f5cd126,Ifdb59336,I6abae5ae,I5ec909df
* changes:
Remove support for stuck threads
Remove DisableOnDebug (new in 4.12) as it is not supported on Android
Extra generic type information to aid certain javacs.
Upgrade external/junit to 4.13.2
Diffstat (limited to 'src/main/java/org/junit/internal/requests/MemoizingRequest.java')
-rw-r--r-- | src/main/java/org/junit/internal/requests/MemoizingRequest.java | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/main/java/org/junit/internal/requests/MemoizingRequest.java b/src/main/java/org/junit/internal/requests/MemoizingRequest.java new file mode 100644 index 0000000..191c230 --- /dev/null +++ b/src/main/java/org/junit/internal/requests/MemoizingRequest.java @@ -0,0 +1,30 @@ +package org.junit.internal.requests; + +import java.util.concurrent.locks.Lock; +import java.util.concurrent.locks.ReentrantLock; + +import org.junit.runner.Request; +import org.junit.runner.Runner; + +abstract class MemoizingRequest extends Request { + private final Lock runnerLock = new ReentrantLock(); + private volatile Runner runner; + + @Override + public final Runner getRunner() { + if (runner == null) { + runnerLock.lock(); + try { + if (runner == null) { + runner = createRunner(); + } + } finally { + runnerLock.unlock(); + } + } + return runner; + } + + /** Creates the {@link Runner} to return from {@link #getRunner()}. Called at most once. */ + protected abstract Runner createRunner(); +} |