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412940 minor threadsafe fixes

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This commit is contained in:
Greg Wilkins 2013-07-15 16:47:05 +10:00
parent cbc0a114f4
commit 8d49f69aa4
1 changed files with 24 additions and 12 deletions
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36
jetty-util/src/test/java/org/eclipse/jetty/util/BenchmarkHelper.java
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@ -39,14 +39,14 @@ public class BenchmarkHelper implements Runnable
private final CompilationMXBean jitCompiler;
private final MemoryMXBean heapMemory;
private final AtomicInteger starts = new AtomicInteger();
private volatile MemoryPoolMXBean youngMemoryPool;
private volatile MemoryPoolMXBean survivorMemoryPool;
private volatile MemoryPoolMXBean oldMemoryPool;
private volatile boolean hasMemoryPools;
private final MemoryPoolMXBean youngMemoryPool;
private final MemoryPoolMXBean survivorMemoryPool;
private final MemoryPoolMXBean oldMemoryPool;
private final boolean hasMemoryPools;
private final GarbageCollectorMXBean youngCollector;
private final GarbageCollectorMXBean oldCollector;
private final boolean hasCollectors;
private volatile ScheduledFuture<?> memoryPoller;
private volatile GarbageCollectorMXBean youngCollector;
private volatile GarbageCollectorMXBean oldCollector;
private volatile boolean hasCollectors;
private volatile ScheduledExecutorService scheduler;
private volatile boolean polling;
private volatile long lastYoungUsed;
@ -70,35 +70,47 @@ public class BenchmarkHelper implements Runnable
this.heapMemory = ManagementFactory.getMemoryMXBean();
List<MemoryPoolMXBean> memoryPools = ManagementFactory.getMemoryPoolMXBeans();
MemoryPoolMXBean ymp=null;
MemoryPoolMXBean smp=null;
MemoryPoolMXBean omp=null;
for (MemoryPoolMXBean memoryPool : memoryPools)
{
if ("PS Eden Space".equals(memoryPool.getName()) ||
"Par Eden Space".equals(memoryPool.getName()) ||
"G1 Eden".equals(memoryPool.getName()))
youngMemoryPool = memoryPool;
ymp = memoryPool;
else if ("PS Survivor Space".equals(memoryPool.getName()) ||
"Par Survivor Space".equals(memoryPool.getName()) ||
"G1 Survivor".equals(memoryPool.getName()))
survivorMemoryPool = memoryPool;
smp = memoryPool;
else if ("PS Old Gen".equals(memoryPool.getName()) ||
"CMS Old Gen".equals(memoryPool.getName()) ||
"G1 Old Gen".equals(memoryPool.getName()))
oldMemoryPool = memoryPool;
omp = memoryPool;
}
youngMemoryPool=ymp;
survivorMemoryPool=smp;
oldMemoryPool=omp;
hasMemoryPools = youngMemoryPool != null && survivorMemoryPool != null && oldMemoryPool != null;
List<GarbageCollectorMXBean> garbageCollectors = ManagementFactory.getGarbageCollectorMXBeans();
GarbageCollectorMXBean yc=null;
GarbageCollectorMXBean oc=null;
for (GarbageCollectorMXBean garbageCollector : garbageCollectors)
{
if ("PS Scavenge".equals(garbageCollector.getName()) ||
"ParNew".equals(garbageCollector.getName()) ||
"G1 Young Generation".equals(garbageCollector.getName()))
youngCollector = garbageCollector;
yc = garbageCollector;
else if ("PS MarkSweep".equals(garbageCollector.getName()) ||
"ConcurrentMarkSweep".equals(garbageCollector.getName()) ||
"G1 Old Generation".equals(garbageCollector.getName()))
oldCollector = garbageCollector;
oc = garbageCollector;
}
youngCollector=yc;
oldCollector=oc;
hasCollectors = youngCollector != null && oldCollector != null;
}