Examples with MemoryMXBean java.lang.management.MemoryMXBean used on opensource projects

Example 36 with MemoryMXBean

use of java.lang.management.MemoryMXBean in project ignite by apache.

the class GridManagerMxBeanIllegalArgumentHandleTest method createAlwaysFailingMxBean.

/** MX bean which is always failing to respond with metrics */
@NotNull
private MemoryMXBean createAlwaysFailingMxBean() {
    final Answer<MemoryUsage> failingAnswer = new Answer<MemoryUsage>() {

        @Override
        public MemoryUsage answer(InvocationOnMock invocationOnMock) throws Throwable {
            throw new IllegalArgumentException("java.lang.IllegalArgumentException: committed = 5274103808 should be < max = 5274095616");
        }
    };
    final MemoryMXBean memoryMXBean = Mockito.mock(MemoryMXBean.class);
    when(memoryMXBean.getHeapMemoryUsage()).thenAnswer(failingAnswer);
    when(memoryMXBean.getNonHeapMemoryUsage()).thenAnswer(failingAnswer);
    return memoryMXBean;
}

Example 37 with MemoryMXBean

use of java.lang.management.MemoryMXBean in project karaf by apache.

the class EnvironmentDumpProvider method dumpMemoryInformation.

private void dumpMemoryInformation(final PrintWriter outPW) {
    final MemoryMXBean mxBean = ManagementFactory.getMemoryMXBean();
    if (null == mxBean) {
        return;
    }
    final MemoryUsage heapMemoryUsage = mxBean.getHeapMemoryUsage();
    final MemoryUsage nonHeapMemoryUsage = mxBean.getNonHeapMemoryUsage();
    if (heapMemoryUsage != null) {
        outPW.println("HEAP Memory:");
        outPW.printf(INDENT_KEY_VALUE_FORMAT, "commited", printMemory(heapMemoryUsage.getCommitted())).println();
        outPW.printf(INDENT_KEY_VALUE_FORMAT, "init", printMemory(heapMemoryUsage.getInit())).println();
        outPW.printf(INDENT_KEY_VALUE_FORMAT, "used", printMemory(heapMemoryUsage.getUsed())).println();
        outPW.printf(INDENT_KEY_VALUE_FORMAT, "maximal", printMemory(heapMemoryUsage.getMax())).println();
    }
    if (nonHeapMemoryUsage != null) {
        outPW.println("NON-HEAP Memory:");
        outPW.printf(INDENT_KEY_VALUE_FORMAT, "commited", printMemory(nonHeapMemoryUsage.getCommitted())).println();
        outPW.printf(INDENT_KEY_VALUE_FORMAT, "init", printMemory(nonHeapMemoryUsage.getInit())).println();
        outPW.printf(INDENT_KEY_VALUE_FORMAT, "used", printMemory(nonHeapMemoryUsage.getUsed())).println();
        outPW.printf(INDENT_KEY_VALUE_FORMAT, "maximal", printMemory(nonHeapMemoryUsage.getMax())).println();
    }
}

Example 38 with MemoryMXBean

use of java.lang.management.MemoryMXBean in project karaf by apache.

the class MemoryDumpProvider method writeDump.

@Override
protected void writeDump(OutputStreamWriter outputStream) throws Exception {
    MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
    outputStream.write("Number of objects waiting finalization: " + memoryMXBean.getObjectPendingFinalizationCount() + "\n\n");
    outputStream.write("Heap:\n");
    outputStream.write("\tInit:      " + memoryMXBean.getHeapMemoryUsage().getInit() + "\n");
    outputStream.write("\tUser:      " + memoryMXBean.getHeapMemoryUsage().getUsed() + "\n");
    outputStream.write("\tCommitted: " + memoryMXBean.getHeapMemoryUsage().getCommitted() + "\n");
    outputStream.write("\tMax:       " + memoryMXBean.getHeapMemoryUsage().getMax() + "\n");
    outputStream.write("Non-Heap: \n");
    outputStream.write("\tInit:      " + memoryMXBean.getNonHeapMemoryUsage().getInit() + "\n");
    outputStream.write("\tUser:      " + memoryMXBean.getNonHeapMemoryUsage().getUsed() + "\n");
    outputStream.write("\tCommitted: " + memoryMXBean.getNonHeapMemoryUsage().getCommitted() + "\n");
    outputStream.write("\tMax:       " + memoryMXBean.getNonHeapMemoryUsage().getMax() + "\n");
}