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Diffstat (limited to 'src/partest')
-rw-r--r-- | src/partest/scala/tools/partest/MemoryTest.scala | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/partest/scala/tools/partest/MemoryTest.scala b/src/partest/scala/tools/partest/MemoryTest.scala new file mode 100644 index 0000000000..58d25d2f01 --- /dev/null +++ b/src/partest/scala/tools/partest/MemoryTest.scala @@ -0,0 +1,38 @@ +package scala.tools.partest + +abstract class MemoryTest { + def maxDelta: Double + def calcsPerIter: Int + def calc(): Unit + + def main(args: Array[String]) { + val rt = Runtime.getRuntime() + def memUsage() = { + import java.lang.management._ + import scala.collection.JavaConverters._ + val pools = ManagementFactory.getMemoryPoolMXBeans.asScala + pools.map(_.getUsage.getUsed).sum / 1000000d + } + + val history = scala.collection.mutable.ListBuffer[Double]() + def stressTestIter() = { + var i = 0 + while (i < calcsPerIter) { calc(); i += 1 } + 1 to 5 foreach (_ => rt.gc()) + history += memUsage + } + + 1 to 5 foreach (_ => stressTestIter()) + val reference = memUsage() + 1 to 5 foreach (_ => stressTestIter()) + 1 to 5 foreach (_ => rt.gc()) + val result = memUsage() + history += result + + val delta = result - reference + if (delta > maxDelta) { + println("FAILED") + history foreach (mb => println(mb + " Mb")) + } + } +} |