PolicyUnit Struktur

Definisi

Ruang nama:

System.IO.Log

Rakitan:

System.IO.Log.dll

Mewakili pengukuran ukuran dalam kebijakan penyimpanan log.

public value class PolicyUnit

public struct PolicyUnit

type PolicyUnit = struct

Public Structure PolicyUnit

Warisan

Object

ValueType

PolicyUnit

Contoh

Contoh ini menunjukkan cara menggunakan LogPolicy kelas dan PolicyUnit struktur untuk menetapkan kebijakan untuk urutan catatan log.

// SET LOG POLICY

LogPolicy policy = sequence.LogStore.Policy;

// Set AutoGrow policy. This enables the log to automatically grow
// when the existing extents are full. New extents are added until
// we reach the MaximumExtentCount extents.
// AutoGrow policy is supported only in Windows Vista and not available in R2.

//policy.AutoGrow = true;

// Set the Growth Rate in terms of extents. This policy specifies
// "how much" the log should grow.
policy.GrowthRate = new PolicyUnit(2, PolicyUnitType.Extents);

// Set the AutoShrink policy. This enables the log to automatically
// shrink if the available free space exceeds the shrink percentage.
// AutoGrow/shrink policy is supported only in Windows Vista and not available in R2.

//policy.AutoShrinkPercentage = new PolicyUnit(30, PolicyUnitType.Percentage);

// Set the PinnedTailThreshold policy.
// A tail pinned event is triggered when there is no
// log space available and log space may be freed by advancing the base.
// The user must handle the tail pinned event by advancing the base of the log.
// If the user is not able to move the base of the log, the user should report with exception in
// the tail pinned handler.
// PinnedTailThreashold policy dictates the amount of space that the TailPinned event requests
// for advancing the base of the log. The amount of space can be in percentage or in terms of bytes
// which is rounded off to the nearest containers in CLFS. The default is 35 percent.

policy.PinnedTailThreshold = new PolicyUnit(10, PolicyUnitType.Percentage);

// Set the maximum extents the log can have.
policy.MaximumExtentCount = 6;

// Set the minimum extents the log can have.
policy.MinimumExtentCount = 2;

// Set the prefix for new containers that are added.
// when AutoGrow is enabled.
//policy.NewExtentPrefix = "MyLogPrefix";

// Set the suffix number for new containers that are added.
// when AutoGrow is enabled.
policy.NextExtentSuffix = 3;

// Commit the log policy.
policy.Commit();

// Refresh updates the IO.Log policy properties with current log policy
// set in the log.
policy.Refresh();

// LOG POLICY END
//

' SET LOG POLICY

Dim policy As LogPolicy = sequence.LogStore.Policy

' Set AutoGrow policy. This enables the log to automatically grow
' when the existing extents are full. New extents are added until
' we reach the MaximumExtentCount extents.
' AutoGrow policy is supported only in Windows Vista and not available in R2.

'policy.AutoGrow = true;

' Set the Growth Rate in terms of extents. This policy specifies
' "how much" the log should grow. 
policy.GrowthRate = New PolicyUnit(2, PolicyUnitType.Extents)

' Set the AutoShrink policy. This enables the log to automatically
' shrink if the available free space exceeds the shrink percentage. 
' AutoGrow/shrink policy is supported only in Windows Vista and not available in R2.

'policy.AutoShrinkPercentage = new PolicyUnit(30, PolicyUnitType.Percentage);

' Set the PinnedTailThreshold policy.
' A tail pinned event is triggered when there is no
' log space available and log space may be freed by advancing the base.
' The user must handle the tail pinned event by advancing the base of the log. 
' If the user is not able to move the base of the log, the user should report with exception in
' the tail pinned handler.
' PinnedTailThreashold policy dictates the amount of space that the TailPinned event requests 
' for advancing the base of the log. The amount of space can be in percentage or in terms of bytes 
' which is rounded off to the nearest containers in CLFS. The default is 35 percent.


policy.PinnedTailThreshold = New PolicyUnit(10, PolicyUnitType.Percentage)

' Set the maximum extents the log can have.
policy.MaximumExtentCount = 6

' Set the minimum extents the log can have.
policy.MinimumExtentCount = 2

' Set the prefix for new containers that are added. 
' when AutoGrow is enabled.
'policy.NewExtentPrefix = "MyLogPrefix";

' Set the suffix number for new containers that are added.
' when AutoGrow is enabled. 
policy.NextExtentSuffix = 3

' Commit the log policy.
policy.Commit()

' Refresh updates the IO.Log policy properties with current log policy 
' set in the log. 
policy.Refresh()

' LOG POLICY END
'

Keterangan

Struktur PolicyUnit mewakili pengukuran ukuran dalam kebijakan penyimpanan log. Enumerasi PolicyUnitType mencantumkan satuan pengukuran yang dapat diwakili.

Anda dapat menggunakan Value properti untuk menentukan ukuran pengukuran. Untuk menentukan satuan pengukuran, gunakan Type properti . Anda dapat mengonversi jenis data lain menjadi dengan PolicyUnit menggunakan Percentage metode dan Extents .

Konstruktor

PolicyUnit(Int64, PolicyUnitType)

Menginisialisasi instans PolicyUnit baru struktur dengan nilai dan jenis yang ditentukan.

Properti

Type	Mendapatkan jenis unit dari PolicyUnit.
Value	Mendapatkan nilai dari PolicyUnit.

Metode

Equals(Object)	Menunjukkan apakah instans ini dan objek tertentu sama.
Extents(Int64)	PolicyUnit Membuat jenis Extents dari angka yang ditentukan.
GetHashCode()	Menyediakan kode hash unik untuk objek ini.
Percentage(Int64)	PolicyUnit Membuat jenis Percentage dari angka yang ditentukan.
ToString()	Mengembalikan representasi string objek ini.

Operator

Equality(PolicyUnit, PolicyUnit)	Membandingkan dua PolicyUnit instans untuk menentukan apakah instans tersebut sama.
Inequality(PolicyUnit, PolicyUnit)	Membandingkan dua PolicyUnit instans untuk menentukan apakah instans tersebut tidak sama.

Lihat juga

• LogPolicy
• PolicyUnitType