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

Example 16 with ClassLoadingMXBean

use of java.lang.management.ClassLoadingMXBean in project micrometer by micrometer-metrics.

the class ClassLoaderMetrics method bindTo.

@Override
public void bindTo(MeterRegistry registry) {
    ClassLoadingMXBean classLoadingBean = ManagementFactory.getClassLoadingMXBean();
    Gauge.builder("jvm.classes.loaded", classLoadingBean, ClassLoadingMXBean::getLoadedClassCount).tags(tags).description("The number of classes that are currently loaded in the Java virtual machine").register(registry);
    FunctionCounter.builder("jvm.classes.unloaded", classLoadingBean, ClassLoadingMXBean::getUnloadedClassCount).tags(tags).description("The total number of classes unloaded since the Java virtual machine has started execution").register(registry);
}

Example 17 with ClassLoadingMXBean

use of java.lang.management.ClassLoadingMXBean in project OpenOLAT by OpenOLAT.

the class RuntimeWebService method getClasseStatisticsVO.

private ClasseStatisticsVO getClasseStatisticsVO() {
    ClasseStatisticsVO stats = new ClasseStatisticsVO();
    ClassLoadingMXBean bean = ManagementFactory.getClassLoadingMXBean();
    stats.setLoadedClassCount(bean.getLoadedClassCount());
    stats.setTotalLoadedClassCount(bean.getTotalLoadedClassCount());
    stats.setUnloadedClassCount(bean.getUnloadedClassCount());
    return stats;
}

Example 18 with ClassLoadingMXBean

use of java.lang.management.ClassLoadingMXBean in project openolat by klemens.

the class RuntimeWebService method getClasseStatisticsVO.

private ClasseStatisticsVO getClasseStatisticsVO() {
    ClasseStatisticsVO stats = new ClasseStatisticsVO();
    ClassLoadingMXBean bean = ManagementFactory.getClassLoadingMXBean();
    stats.setLoadedClassCount(bean.getLoadedClassCount());
    stats.setTotalLoadedClassCount(bean.getTotalLoadedClassCount());
    stats.setUnloadedClassCount(bean.getUnloadedClassCount());
    return stats;
}

Example 19 with ClassLoadingMXBean

use of java.lang.management.ClassLoadingMXBean in project commons by twitter.

the class JvmStats method export.

/**
 * Exports stats related to the JVM and runtime environment.
 */
public static void export() {
    final OperatingSystemMXBean osMbean = ManagementFactory.getOperatingSystemMXBean();
    if (osMbean instanceof com.sun.management.OperatingSystemMXBean) {
        final com.sun.management.OperatingSystemMXBean sunOsMbean = (com.sun.management.OperatingSystemMXBean) osMbean;
        Stats.exportAll(ImmutableList.<Stat<? extends Number>>builder().add(new StatImpl<Long>("system_free_physical_memory_mb") {

            @Override
            public Long read() {
                return sunOsMbean.getFreePhysicalMemorySize() / BYTES_PER_MB;
            }
        }).add(new StatImpl<Long>("system_free_swap_mb") {

            @Override
            public Long read() {
                return sunOsMbean.getFreeSwapSpaceSize() / BYTES_PER_MB;
            }
        }).add(Rate.of(new StatImpl<Long>("process_cpu_time_nanos") {

            @Override
            public Long read() {
                return sunOsMbean.getProcessCpuTime();
            }
        }).withName("process_cpu_cores_utilized").withScaleFactor(SECS_PER_NANO).build()).build());
    }
    if (osMbean instanceof com.sun.management.UnixOperatingSystemMXBean) {
        final com.sun.management.UnixOperatingSystemMXBean unixOsMbean = (com.sun.management.UnixOperatingSystemMXBean) osMbean;
        Stats.exportAll(ImmutableList.<Stat<? extends Number>>builder().add(new StatImpl<Long>("process_max_fd_count") {

            @Override
            public Long read() {
                return unixOsMbean.getMaxFileDescriptorCount();
            }
        }).add(new StatImpl<Long>("process_open_fd_count") {

            @Override
            public Long read() {
                return unixOsMbean.getOpenFileDescriptorCount();
            }
        }).build());
    }
    final Runtime runtime = Runtime.getRuntime();
    final ClassLoadingMXBean classLoadingBean = ManagementFactory.getClassLoadingMXBean();
    final MemoryMXBean memoryBean = ManagementFactory.getMemoryMXBean();
    final ThreadMXBean threads = ManagementFactory.getThreadMXBean();
    final RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();
    Stats.exportAll(ImmutableList.<Stat<? extends Number>>builder().add(new StatImpl<Long>("jvm_time_ms") {

        @Override
        public Long read() {
            return System.currentTimeMillis();
        }
    }).add(new StatImpl<Integer>("jvm_available_processors") {

        @Override
        public Integer read() {
            return runtime.availableProcessors();
        }
    }).add(new StatImpl<Long>("jvm_memory_free_mb") {

        @Override
        public Long read() {
            return runtime.freeMemory() / BYTES_PER_MB;
        }
    }).add(new StatImpl<Long>("jvm_memory_max_mb") {

        @Override
        public Long read() {
            return runtime.maxMemory() / BYTES_PER_MB;
        }
    }).add(new StatImpl<Long>("jvm_memory_mb_total") {

        @Override
        public Long read() {
            return runtime.totalMemory() / BYTES_PER_MB;
        }
    }).add(new StatImpl<Integer>("jvm_class_loaded_count") {

        @Override
        public Integer read() {
            return classLoadingBean.getLoadedClassCount();
        }
    }).add(new StatImpl<Long>("jvm_class_total_loaded_count") {

        @Override
        public Long read() {
            return classLoadingBean.getTotalLoadedClassCount();
        }
    }).add(new StatImpl<Long>("jvm_class_unloaded_count") {

        @Override
        public Long read() {
            return classLoadingBean.getUnloadedClassCount();
        }
    }).add(new StatImpl<Long>("jvm_gc_collection_time_ms") {

        @Override
        public Long read() {
            long collectionTimeMs = 0;
            for (GarbageCollectorMXBean bean : ManagementFactory.getGarbageCollectorMXBeans()) {
                collectionTimeMs += bean.getCollectionTime();
            }
            return collectionTimeMs;
        }
    }).add(new StatImpl<Long>("jvm_gc_collection_count") {

        @Override
        public Long read() {
            long collections = 0;
            for (GarbageCollectorMXBean bean : ManagementFactory.getGarbageCollectorMXBeans()) {
                collections += bean.getCollectionCount();
            }
            return collections;
        }
    }).add(new StatImpl<Long>("jvm_memory_heap_mb_used") {

        @Override
        public Long read() {
            return memoryBean.getHeapMemoryUsage().getUsed() / BYTES_PER_MB;
        }
    }).add(new StatImpl<Long>("jvm_memory_heap_mb_committed") {

        @Override
        public Long read() {
            return memoryBean.getHeapMemoryUsage().getCommitted() / BYTES_PER_MB;
        }
    }).add(new StatImpl<Long>("jvm_memory_heap_mb_max") {

        @Override
        public Long read() {
            return memoryBean.getHeapMemoryUsage().getMax() / BYTES_PER_MB;
        }
    }).add(new StatImpl<Long>("jvm_memory_non_heap_mb_used") {

        @Override
        public Long read() {
            return memoryBean.getNonHeapMemoryUsage().getUsed() / BYTES_PER_MB;
        }
    }).add(new StatImpl<Long>("jvm_memory_non_heap_mb_committed") {

        @Override
        public Long read() {
            return memoryBean.getNonHeapMemoryUsage().getCommitted() / BYTES_PER_MB;
        }
    }).add(new StatImpl<Long>("jvm_memory_non_heap_mb_max") {

        @Override
        public Long read() {
            return memoryBean.getNonHeapMemoryUsage().getMax() / BYTES_PER_MB;
        }
    }).add(new StatImpl<Long>("jvm_uptime_secs") {

        @Override
        public Long read() {
            return runtimeMXBean.getUptime() / 1000;
        }
    }).add(new StatImpl<Double>("system_load_avg") {

        @Override
        public Double read() {
            return osMbean.getSystemLoadAverage();
        }
    }).add(new StatImpl<Integer>("jvm_threads_peak") {

        @Override
        public Integer read() {
            return threads.getPeakThreadCount();
        }
    }).add(new StatImpl<Long>("jvm_threads_started") {

        @Override
        public Long read() {
            return threads.getTotalStartedThreadCount();
        }
    }).add(new StatImpl<Integer>("jvm_threads_daemon") {

        @Override
        public Integer read() {
            return threads.getDaemonThreadCount();
        }
    }).add(new StatImpl<Integer>("jvm_threads_active") {

        @Override
        public Integer read() {
            return threads.getThreadCount();
        }
    }).build());
    // Export per memory pool gc time and cycle count like Ostrich
    // This is based on code in Bridcage: https://cgit.twitter.biz/birdcage/tree/ \
    // ostrich/src/main/scala/com/twitter/ostrich/stats/StatsCollection.scala
    Stats.exportAll(Iterables.transform(ManagementFactory.getGarbageCollectorMXBeans(), new Function<GarbageCollectorMXBean, Stat<? extends Number>>() {

        @Override
        public Stat<? extends Number> apply(final GarbageCollectorMXBean gcMXBean) {
            return new StatImpl<Long>("jvm_gc_" + Stats.normalizeName(gcMXBean.getName()) + "_collection_count") {

                @Override
                public Long read() {
                    return gcMXBean.getCollectionCount();
                }
            };
        }
    }));
    Stats.exportAll(Iterables.transform(ManagementFactory.getGarbageCollectorMXBeans(), new Function<GarbageCollectorMXBean, Stat<? extends Number>>() {

        @Override
        public Stat<? extends Number> apply(final GarbageCollectorMXBean gcMXBean) {
            return new StatImpl<Long>("jvm_gc_" + Stats.normalizeName(gcMXBean.getName()) + "_collection_time_ms") {

                @Override
                public Long read() {
                    return gcMXBean.getCollectionTime();
                }
            };
        }
    }));
    Stats.exportString(new StatImpl<String>("jvm_input_arguments") {

        @Override
        public String read() {
            return runtimeMXBean.getInputArguments().toString();
        }
    });
    for (final String property : System.getProperties().stringPropertyNames()) {
        Stats.exportString(new StatImpl<String>("jvm_prop_" + Stats.normalizeName(property)) {

            @Override
            public String read() {
                return System.getProperty(property);
            }
        });
    }
    for (final Map.Entry<String, String> environmentVariable : System.getenv().entrySet()) {
        Stats.exportString(new StatImpl<String>("system_env_" + Stats.normalizeName(environmentVariable.getKey())) {

            @Override
            public String read() {
                return environmentVariable.getValue();
            }
        });
    }
}