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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.car.storagemonitoring;
import android.annotation.SystemApi;
/**
* Record of data as extracted from /proc/uid_io/stats
*
* @hide
*/
@SystemApi
public final class UidIoRecord {
public final int uid;
public final long foreground_rchar;
public final long foreground_wchar;
public final long foreground_read_bytes;
public final long foreground_write_bytes;
public final long foreground_fsync;
public final long background_rchar;
public final long background_wchar;
public final long background_read_bytes;
public final long background_write_bytes;
public final long background_fsync;
public UidIoRecord(int uid,
long foreground_rchar,
long foreground_wchar,
long foreground_read_bytes,
long foreground_write_bytes,
long foreground_fsync,
long background_rchar,
long background_wchar,
long background_read_bytes,
long background_write_bytes,
long background_fsync) {
this.uid = uid;
this.foreground_rchar = foreground_rchar;
this.foreground_wchar = foreground_wchar;
this.foreground_read_bytes = foreground_read_bytes;
this.foreground_write_bytes = foreground_write_bytes;
this.foreground_fsync = foreground_fsync;
this.background_rchar = background_rchar;
this.background_wchar = background_wchar;
this.background_read_bytes = background_read_bytes;
this.background_write_bytes = background_write_bytes;
this.background_fsync = background_fsync;
}
/** @hide */
public UidIoRecord delta(IoStatsEntry other) {
if (uid != other.uid) {
throw new IllegalArgumentException("cannot calculate delta between different user IDs");
}
return new UidIoRecord(uid,
foreground_rchar - other.foreground.bytesRead,
foreground_wchar - other.foreground.bytesWritten,
foreground_read_bytes - other.foreground.bytesReadFromStorage,
foreground_write_bytes - other.foreground.bytesWrittenToStorage,
foreground_fsync - other.foreground.fsyncCalls,
background_rchar - other.background.bytesRead,
background_wchar - other.background.bytesWritten,
background_read_bytes - other.background.bytesReadFromStorage,
background_write_bytes - other.background.bytesWrittenToStorage,
background_fsync - other.background.fsyncCalls);
}
/** @hide */
public UidIoRecord delta(UidIoRecord other) {
if (uid != other.uid) {
throw new IllegalArgumentException("cannot calculate delta between different user IDs");
}
return new UidIoRecord(uid,
foreground_rchar - other.foreground_rchar,
foreground_wchar - other.foreground_wchar,
foreground_read_bytes - other.foreground_read_bytes,
foreground_write_bytes - other.foreground_write_bytes,
foreground_fsync - other.foreground_fsync,
background_rchar - other.background_rchar,
background_wchar - other.background_wchar,
background_read_bytes - other.background_read_bytes,
background_write_bytes - other.background_write_bytes,
background_fsync - other.background_fsync);
}
}
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