HardwareDescription (Flink : Runtime 1.15.0 API)

java.lang.Object
- org.apache.flink.runtime.instance.HardwareDescription

所有已实现的接口:

Serializable
```
public final class HardwareDescription
extends Object
implements Serializable
```
A hardware description describes the resources available to a task manager.

另请参阅:

序列化表格

字段概要

字段
限定符和类型	字段和说明
`static String`	`FIELD_NAME_CPU_CORES`
`static String`	`FIELD_NAME_SIZE_JVM_HEAP`
`static String`	`FIELD_NAME_SIZE_MANAGED_MEMORY`
`static String`	`FIELD_NAME_SIZE_PHYSICAL_MEMORY`

构造器概要

构造器
构造器和说明
`HardwareDescription(int numberOfCPUCores, long sizeOfPhysicalMemory, long sizeOfJvmHeap, long sizeOfManagedMemory)` Constructs a new hardware description object.

方法概要

所有方法静态方法实例方法具体方法
限定符和类型	方法和说明
`boolean`	`equals(Object o)`
`static HardwareDescription`	`extractFromSystem(long managedMemory)`
`int`	`getNumberOfCPUCores()` Returns the number of CPU cores available to the JVM on the compute node.
`long`	`getSizeOfJvmHeap()` Returns the size of the JVM heap memory
`long`	`getSizeOfManagedMemory()` Returns the size of the memory managed by the system for caching, hashing, sorting, ...
`long`	`getSizeOfPhysicalMemory()` Returns the size of physical memory in bytes available on the compute node.
`int`	`hashCode()`
`String`	`toString()`

从类继承的方法 java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- 字段详细资料
  - FIELD_NAME_CPU_CORES
```
public static final String FIELD_NAME_CPU_CORES
```
    另请参阅:
    
    常量字段值
  - FIELD_NAME_SIZE_PHYSICAL_MEMORY
```
public static final String FIELD_NAME_SIZE_PHYSICAL_MEMORY
```
    另请参阅:
    
    常量字段值
  - FIELD_NAME_SIZE_JVM_HEAP
```
public static final String FIELD_NAME_SIZE_JVM_HEAP
```
    另请参阅:
    
    常量字段值
  - FIELD_NAME_SIZE_MANAGED_MEMORY
```
public static final String FIELD_NAME_SIZE_MANAGED_MEMORY
```
    另请参阅:
    
    常量字段值
- 构造器详细资料
  - HardwareDescription
```
public HardwareDescription(int numberOfCPUCores,
                           long sizeOfPhysicalMemory,
                           long sizeOfJvmHeap,
                           long sizeOfManagedMemory)
```
    Constructs a new hardware description object.
    
    参数:
    
    numberOfCPUCores - The number of CPU cores available to the JVM on the compute node.
    
    sizeOfPhysicalMemory - The size of physical memory in bytes available on the compute node.
    
    sizeOfJvmHeap - The size of the JVM heap memory.
    
    sizeOfManagedMemory - The size of the memory managed by the system for caching, hashing, sorting, ...
- 方法详细资料
  - getNumberOfCPUCores
```
public int getNumberOfCPUCores()
```
    Returns the number of CPU cores available to the JVM on the compute node.
    
    返回:
    
    the number of CPU cores available to the JVM on the compute node
  - getSizeOfPhysicalMemory
```
public long getSizeOfPhysicalMemory()
```
    Returns the size of physical memory in bytes available on the compute node.
    
    返回:
    
    the size of physical memory in bytes available on the compute node
  - getSizeOfJvmHeap
```
public long getSizeOfJvmHeap()
```
    Returns the size of the JVM heap memory
    
    返回:
    
    The size of the JVM heap memory
  - getSizeOfManagedMemory
```
public long getSizeOfManagedMemory()
```
    Returns the size of the memory managed by the system for caching, hashing, sorting, ...
    
    返回:
    
    The size of the memory managed by the system.
  - equals
```
public boolean equals(Object o)
```
    覆盖:
    
    equals 在类中 Object
  - hashCode
```
public int hashCode()
```
    覆盖:
    
    hashCode 在类中 Object
  - toString
```
public String toString()
```
    覆盖:
    
    toString 在类中 Object
  - extractFromSystem
```
public static HardwareDescription extractFromSystem(long managedMemory)
```

类 HardwareDescription

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

FIELD_NAME_CPU_CORES

FIELD_NAME_SIZE_PHYSICAL_MEMORY

FIELD_NAME_SIZE_JVM_HEAP

FIELD_NAME_SIZE_MANAGED_MEMORY

构造器详细资料

HardwareDescription

方法详细资料

getNumberOfCPUCores

getSizeOfPhysicalMemory

getSizeOfJvmHeap

getSizeOfManagedMemory

equals

hashCode

toString

extractFromSystem