Debug.MemoryInfo | API reference

Debug.MemoryInfo | API reference | Android Developers

public static class Debug.MemoryInfo
extends Object implements Parcelable

This class is used to retrieved various statistics about the memory mappings for this process. The returned info is broken down by dalvik, native, and other. All results are in kB.

Summary

Inherited constants

From interface android.os.Parcelable

`int`	`CONTENTS_FILE_DESCRIPTOR` Descriptor bit used with `describeContents()`: indicates that the Parcelable object's flattened representation includes a file descriptor.
`int`	`PARCELABLE_WRITE_RETURN_VALUE` Flag for use with `writeToParcel(Parcel, int)`: the object being written is a return value, that is the result of a function such as "`Parcelable someFunction()`", "`void someFunction(out Parcelable)`", or "`void someFunction(inout Parcelable)`".

Fields
`public static final Creator<Debug.MemoryInfo>`	`CREATOR`
`public int`	`dalvikPrivateDirty` The private dirty pages used by dalvik heap.
`public int`	`dalvikPss` The proportional set size for dalvik heap.
`public int`	`dalvikSharedDirty` The shared dirty pages used by dalvik heap.
`public int`	`nativePrivateDirty` The private dirty pages used by the native heap.
`public int`	`nativePss` The proportional set size for the native heap.
`public int`	`nativeSharedDirty` The shared dirty pages used by the native heap.
`public int`	`otherPrivateDirty` The private dirty pages used by everything else.
`public int`	`otherPss` The proportional set size for everything else.
`public int`	`otherSharedDirty` The shared dirty pages used by everything else.

Public constructors
`MemoryInfo()`

Public methods
`int`	`describeContents()` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
`String`	`getMemoryStat(String statName)` Returns the value of a particular memory statistic or `null` if no such memory statistic exists.
`Map<String, String>`	`getMemoryStats()` Returns a map of the names/values of the memory statistics that `getMemoryStat(String)` supports.
`int`	`getTotalPrivateClean()` Return total shared clean memory usage in kB.
`int`	`getTotalPrivateDirty()` Return total private dirty memory usage in kB.
`int`	`getTotalPss()` Return total PSS memory usage in kB.
`int`	`getTotalSharedClean()` Return total shared clean memory usage in kB.
`int`	`getTotalSharedDirty()` Return total shared dirty memory usage in kB.
`int`	`getTotalSwappablePss()` Return total PSS memory usage in kB mapping a file of one of the following extension: .so, .jar, .apk, .ttf, .dex, .odex, .oat, .art .
`void`	`readFromParcel(Parcel source)`
`void`	`writeToParcel(Parcel dest, int flags)` Flatten this object in to a Parcel.

Inherited methods

From class java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

From interface android.os.Parcelable

`abstract int`	`describeContents()` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
`abstract void`	`writeToParcel(Parcel dest, int flags)` Flatten this object in to a Parcel.

Fields

dalvikPrivateDirty

public int dalvikPrivateDirty

The private dirty pages used by dalvik heap.

dalvikPss

public int dalvikPss

The proportional set size for dalvik heap. (Doesn't include other Dalvik overhead.)

dalvikSharedDirty

public int dalvikSharedDirty

The shared dirty pages used by dalvik heap.

nativePrivateDirty

public int nativePrivateDirty

The private dirty pages used by the native heap.

nativePss

public int nativePss

The proportional set size for the native heap.

nativeSharedDirty

public int nativeSharedDirty

The shared dirty pages used by the native heap.

otherPrivateDirty

public int otherPrivateDirty

The private dirty pages used by everything else.

otherPss

public int otherPss

The proportional set size for everything else.

otherSharedDirty

public int otherSharedDirty

The shared dirty pages used by everything else.

Public constructors

MemoryInfo

public MemoryInfo ()

Public methods

describeContents

public int describeContents ()

Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. For example, if the object will include a file descriptor in the output of writeToParcel(Parcel,int), the return value of this method must include the CONTENTS_FILE_DESCRIPTOR bit.

Returns
`int`	a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either `0` or `CONTENTS_FILE_DESCRIPTOR`

getMemoryStat

public String getMemoryStat (String statName)

Returns the value of a particular memory statistic or null if no such memory statistic exists.

The following table lists the memory statistics that are supported. Note that memory statistics may be added or removed in a future API level.

Memory statistic name	Meaning	Example	Supported (API Levels)
summary.java-heap	The private Java Heap usage in kB. This corresponds to the Java Heap field in the App Summary section output by dumpsys meminfo.	`1442`	23
summary.native-heap	The private Native Heap usage in kB. This corresponds to the Native Heap field in the App Summary section output by dumpsys meminfo.	`1442`	23
summary.code	The memory usage for static code and resources in kB. This corresponds to the Code field in the App Summary section output by dumpsys meminfo.	`1442`	23
summary.stack	The stack usage in kB. This corresponds to the Stack field in the App Summary section output by dumpsys meminfo.	`1442`	23
summary.graphics	The graphics usage in kB. This corresponds to the Graphics field in the App Summary section output by dumpsys meminfo.	`1442`	23
summary.private-other	Other private memory usage in kB. This corresponds to the Private Other field output in the App Summary section by dumpsys meminfo.	`1442`	23
summary.system	Shared and system memory usage in kB. This corresponds to the System field output in the App Summary section by dumpsys meminfo.	`1442`	23
summary.total-pss	Total PSS memory usage in kB.	`1442`	23
summary.total-swap	Total swap usage in kB.	`1442`	23

Parameters
`statName`	`String`

Returns
`String`

getTotalPrivateClean

public int getTotalPrivateClean ()

Return total shared clean memory usage in kB.

Returns
`int`

getTotalPrivateDirty

public int getTotalPrivateDirty ()

Return total private dirty memory usage in kB.

Returns
`int`

getTotalPss

public int getTotalPss ()

Return total PSS memory usage in kB.

Returns
`int`

getTotalSharedClean

public int getTotalSharedClean ()

Return total shared clean memory usage in kB.

Returns
`int`

getTotalSharedDirty

public int getTotalSharedDirty ()

Return total shared dirty memory usage in kB.

Returns
`int`

getTotalSwappablePss

public int getTotalSwappablePss ()

Return total PSS memory usage in kB mapping a file of one of the following extension: .so, .jar, .apk, .ttf, .dex, .odex, .oat, .art .

Returns
`int`

readFromParcel

public void readFromParcel (Parcel source)

Parameters
`source`	`Parcel`