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8237117: Better ForkJoinPool behavior

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Reviewed-by: dfuchs, alanb, rhalade, mullan
This commit is contained in:
Chris Hegarty 2020-04-03 17:20:45 +01:00
parent fe514a2e55
commit 0ffa6b75fd
1 changed files with 6 additions and 5 deletions
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11
src/java.base/share/classes/java/util/concurrent/ForkJoinWorkerThread.java
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@ -78,6 +78,11 @@ public class ForkJoinWorkerThread extends Thread {
final ForkJoinPool pool; // the pool this thread works in final ForkJoinPool pool; // the pool this thread works in
final ForkJoinPool.WorkQueue workQueue; // work-stealing mechanics final ForkJoinPool.WorkQueue workQueue; // work-stealing mechanics
/** An AccessControlContext supporting no privileges */
private static final AccessControlContext INNOCUOUS_ACC =
new AccessControlContext(
new ProtectionDomain[] { new ProtectionDomain(null, null) });
/** /**
* Creates a ForkJoinWorkerThread operating in the given pool. * Creates a ForkJoinWorkerThread operating in the given pool.
* *
@ -99,6 +104,7 @@ public class ForkJoinWorkerThread extends Thread {
ForkJoinWorkerThread(ForkJoinPool pool, ClassLoader ccl) { ForkJoinWorkerThread(ForkJoinPool pool, ClassLoader ccl) {
super("aForkJoinWorkerThread"); super("aForkJoinWorkerThread");
super.setContextClassLoader(ccl); super.setContextClassLoader(ccl);
ThreadLocalRandom.setInheritedAccessControlContext(this, INNOCUOUS_ACC);
this.pool = pool; this.pool = pool;
this.workQueue = pool.registerWorker(this); this.workQueue = pool.registerWorker(this);
} }
@ -214,11 +220,6 @@ public class ForkJoinWorkerThread extends Thread {
group, "InnocuousForkJoinWorkerThreadGroup"); group, "InnocuousForkJoinWorkerThreadGroup");
}}); }});
/** An AccessControlContext supporting no privileges */
private static final AccessControlContext INNOCUOUS_ACC =
new AccessControlContext(
new ProtectionDomain[] { new ProtectionDomain(null, null) });
InnocuousForkJoinWorkerThread(ForkJoinPool pool) { InnocuousForkJoinWorkerThread(ForkJoinPool pool) {
super(pool, super(pool,
ClassLoader.getSystemClassLoader(), ClassLoader.getSystemClassLoader(),