jdk.lang.management.BufferPoolMXBean
The management interface for a buffer pool, for example a pool of direct or mapped buffers.
A class implementing this interface is an MXBean. A Java virtual machine has one or more implementations of this interface. The getPlatformMXBeans method can be used to obtain the list of BufferPoolMXBean objects representing the management interfaces for pools of buffers as follows:
List<BufferPoolMXBean> pools = ManagementFactory.getPlatformMXBeans(BufferPoolMXBean.class);
The management interfaces are also registered with the platform MBeanServer. The ObjectName that uniquely identifies the management interface within the MBeanServer takes the form:
java.nio:type=BufferPool,name=pool name
where pool name is the name of the buffer pool.
The management interface for a buffer pool, for example a pool of
direct or mapped buffers.
A class implementing this interface is an
MXBean. A Java
virtual machine has one or more implementations of this interface. The getPlatformMXBeans
method can be used to obtain the list of BufferPoolMXBean objects
representing the management interfaces for pools of buffers as follows:
List<BufferPoolMXBean> pools = ManagementFactory.getPlatformMXBeans(BufferPoolMXBean.class);
The management interfaces are also registered with the platform MBeanServer. The ObjectName that uniquely identifies the
management interface within the MBeanServer takes the form:
java.nio:type=BufferPool,name=pool name
where pool name is the name of the buffer pool.get-countclj
(get-count this)Returns an estimate of the number of buffers in the pool.
returns: An estimate of the number of buffers in this pool - long
Returns an estimate of the number of buffers in the pool. returns: An estimate of the number of buffers in this pool - `long`
get-memory-usedclj
(get-memory-used this)Returns an estimate of the memory that the Java virtual machine is using for this buffer pool. The value returned by this method may differ from the estimate of the total capacity of the buffers in this pool. This difference is explained by alignment, memory allocator, and other implementation specific reasons.
returns: An estimate of the memory that the Java virtual machine is using
for this buffer pool in bytes, or -1L if an estimate of
the memory usage is not available - long
Returns an estimate of the memory that the Java virtual machine is using
for this buffer pool. The value returned by this method may differ
from the estimate of the total capacity of
the buffers in this pool. This difference is explained by alignment,
memory allocator, and other implementation specific reasons.
returns: An estimate of the memory that the Java virtual machine is using
for this buffer pool in bytes, or -1L if an estimate of
the memory usage is not available - `long`get-nameclj
(get-name this)Returns the name representing this buffer pool.
returns: The name of this buffer pool. - java.lang.String
Returns the name representing this buffer pool. returns: The name of this buffer pool. - `java.lang.String`
get-total-capacityclj
(get-total-capacity this)Returns an estimate of the total capacity of the buffers in this pool. A buffer's capacity is the number of elements it contains and the value returned by this method is an estimate of the total capacity of buffers in the pool in bytes.
returns: An estimate of the total capacity of the buffers in this pool
in bytes - long
Returns an estimate of the total capacity of the buffers in this pool.
A buffer's capacity is the number of elements it contains and the value
returned by this method is an estimate of the total capacity of buffers
in the pool in bytes.
returns: An estimate of the total capacity of the buffers in this pool
in bytes - `long`cljdoc is a website building & hosting documentation for Clojure/Script libraries
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