Package io.deephaven.util.profiling

Class NullThreadProfiler

java.lang.Object

io.deephaven.util.profiling.NullThreadProfiler

All Implemented Interfaces:

ThreadProfiler

public final class NullThreadProfiler
extends Object
implements ThreadProfiler

The "null" ThreadProfiler implementation, which supports no actual measurements.

Field Summary

Fields

Modifier and Type	Field	Description
static final ThreadProfiler	INSTANCE

Fields inherited from interface io.deephaven.util.profiling.ThreadProfiler

CPU_PROFILING_ENABLED, DEFAULT, MEMORY_PROFILING_ENABLED

Method Summary

Modifier and Type	Method	Description
boolean	cpuProfilingAvailable()	Check if CPU profiling (e.g.
final long	getCurrentThreadAllocatedBytes()	Get the approximate number of total bytes allocated by the current thread.
final long	getCurrentThreadCpuTime()	Get the approximate number of total nanoseconds the current thread has executed (in system or user mode) since CPU time measurement started.
final long	getCurrentThreadUserTime()	Get the approximate number of total nanoseconds the current thread has executed (in user mode) since CPU time measurement started.
boolean	memoryProfilingAvailable()	Check if memory profiling (e.g.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

INSTANCE

public static final ThreadProfiler INSTANCE

Method Details

memoryProfilingAvailable

public boolean memoryProfilingAvailable()

Description copied from interface: ThreadProfiler

Check if memory profiling (e.g. ThreadProfiler.getCurrentThreadAllocatedBytes()) is available (supported and enabled).

Specified by:

memoryProfilingAvailable in interface ThreadProfiler

Returns:

Whether memory profiling is available.

getCurrentThreadAllocatedBytes

public final long getCurrentThreadAllocatedBytes()

Description copied from interface: ThreadProfiler

Get the approximate number of total bytes allocated by the current thread.

Specified by:

getCurrentThreadAllocatedBytes in interface ThreadProfiler

Returns:

The approximate number of total bytes allocated by the current thread, or QueryConstants.NULL_LONG if unavailable.

cpuProfilingAvailable

public boolean cpuProfilingAvailable()

Description copied from interface: ThreadProfiler

Check if CPU profiling (e.g. ThreadProfiler.getCurrentThreadCpuTime() and ThreadProfiler.getCurrentThreadUserTime()) is available (supported and enabled).

Specified by:

cpuProfilingAvailable in interface ThreadProfiler

Returns:

Whether CPU profiling is available.

getCurrentThreadCpuTime

public final long getCurrentThreadCpuTime()

Description copied from interface: ThreadProfiler

Get the approximate number of total nanoseconds the current thread has executed (in system or user mode) since CPU time measurement started.

Specified by:

getCurrentThreadCpuTime in interface ThreadProfiler

Returns:

The approximate number of total nanoseconds the current thread has executed, or QueryConstants.NULL_LONG if unavailable.

getCurrentThreadUserTime

public final long getCurrentThreadUserTime()

Description copied from interface: ThreadProfiler

Get the approximate number of total nanoseconds the current thread has executed (in user mode) since CPU time measurement started.

Specified by:

getCurrentThreadUserTime in interface ThreadProfiler

Returns:

The approximate number of total nanoseconds the current thread has executed in user mode, or QueryConstants.NULL_LONG if unavailable.