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161 changes: 161 additions & 0 deletions
161
contrib/platform/src/com/sun/jna/platform/win32/PowrProf.java
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| /* Copyright (c) 2019 Daniel Widdis, All Rights Reserved | ||
| * | ||
| * The contents of this file is dual-licensed under 2 | ||
| * alternative Open Source/Free licenses: LGPL 2.1 or later and | ||
| * Apache License 2.0. (starting with JNA version 4.0.0). | ||
| * | ||
| * You can freely decide which license you want to apply to | ||
| * the project. | ||
| * | ||
| * You may obtain a copy of the LGPL License at: | ||
| * | ||
| * http://www.gnu.org/licenses/licenses.html | ||
| * | ||
| * A copy is also included in the downloadable source code package | ||
| * containing JNA, in file "LGPL2.1". | ||
| * | ||
| * You may obtain a copy of the Apache License at: | ||
| * | ||
| * http://www.apache.org/licenses/ | ||
| * | ||
| * A copy is also included in the downloadable source code package | ||
| * containing JNA, in file "AL2.0". | ||
| */ | ||
| package com.sun.jna.platform.win32; | ||
|
|
||
| import com.sun.jna.Library; | ||
| import com.sun.jna.Native; | ||
| import com.sun.jna.Pointer; | ||
| import com.sun.jna.Structure; | ||
| import com.sun.jna.Structure.FieldOrder; | ||
|
|
||
| /** | ||
| * Functions used with power management. | ||
| */ | ||
| public interface PowrProf extends Library { | ||
| PowrProf INSTANCE = Native.load("PowrProf", PowrProf.class); | ||
|
|
||
| /** | ||
| * Indicates power level information. | ||
| */ | ||
| public interface POWER_INFORMATION_LEVEL { | ||
| int LAST_SLEEP_TIME = 15; | ||
| int LAST_WAKE_TIME = 14; | ||
| int PROCESSOR_INFORMATION = 11; | ||
| int SYSTEM_BATTERY_STATE = 5; | ||
| int SYSTEM_EXECUTION_STATE = 16; | ||
| int SYSTEM_POWER_CAPABILITIES = 4; | ||
| int SYSTEM_POWER_INFORMATION = 12; | ||
| int SYSTEM_POWER_POLICY_AC = 0; | ||
| int SYSTEM_POWER_POLICY_CURRENT = 8; | ||
| int SYSTEM_POWER_POLICY_DC = 1; | ||
| int SYSTEM_RESERVE_HIBER_FILE = 10; | ||
| } | ||
|
|
||
| /** | ||
| * Contains information about the current state of the system battery. | ||
| */ | ||
| @FieldOrder({ "acOnLine", "batteryPresent", "charging", "discharging", "spare1", "tag", "maxCapacity", | ||
| "remainingCapacity", "rate", "estimatedTime", "defaultAlert1", "defaultAlert2" }) | ||
| class SystemBatteryState extends Structure { | ||
| public byte acOnLine; | ||
| public byte batteryPresent; | ||
| public byte charging; | ||
| public byte discharging; | ||
| public byte[] spare1 = new byte[3]; | ||
| public byte tag; | ||
| public int maxCapacity; | ||
| public int remainingCapacity; | ||
| public int rate; | ||
| public int estimatedTime; | ||
| public int defaultAlert1; | ||
| public int defaultAlert2; | ||
|
|
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| public SystemBatteryState(Pointer p) { | ||
| super(p); | ||
| read(); | ||
| } | ||
|
|
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| public SystemBatteryState() { | ||
| super(); | ||
| } | ||
| } | ||
|
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||
| /** | ||
| * Contains information about a processor. | ||
| */ | ||
| @FieldOrder({ "number", "maxMhz", "currentMhz", "mhzLimit", "maxIdleState", "currentIdleState" }) | ||
| class ProcessorPowerInformation extends Structure { | ||
| public int number; | ||
| public int maxMhz; | ||
| public int currentMhz; | ||
| public int mhzLimit; | ||
| public int maxIdleState; | ||
| public int currentIdleState; | ||
|
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| public ProcessorPowerInformation(Pointer p) { | ||
| super(p); | ||
| read(); | ||
| } | ||
|
|
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| public ProcessorPowerInformation() { | ||
| super(); | ||
| } | ||
| } | ||
|
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||
| /** | ||
| * Sets or retrieves power information. | ||
| * <p> | ||
| * Changes made to the current system power policy using | ||
| * {@link #CallNtPowerInformation()} are immediate, but they are not | ||
| * persistent; that is, the changes are not stored as part of a power | ||
| * scheme. Any changes to system power policy made with | ||
| * {@link #CallNtPowerInformation()} may be overwritten by changes to a | ||
| * policy scheme made by the user in the Power Options control panel | ||
| * program, or by subsequent calls to {@code WritePwrScheme}, | ||
| * {@code SetActivePwrScheme}, or other power scheme functions. | ||
| * | ||
| * @param informationLevel | ||
| * The information level requested. This value indicates the | ||
| * specific power information to be set or retrieved. This | ||
| * parameter must be one of the following | ||
| * {@link POWER_INFORMATION_LEVEL} enumeration type values: | ||
| * {@link POWER_INFORMATION_LEVEL#LAST_SLEEP_TIME}, | ||
| * {@link POWER_INFORMATION_LEVEL#LAST_WAKE_TIME}, | ||
| * {@link POWER_INFORMATION_LEVEL#PROCESSOR_INFORMATION}, | ||
| * {@link POWER_INFORMATION_LEVEL#SYSTEM_BATTERY_STATE}, | ||
| * {@link POWER_INFORMATION_LEVEL#SYSTEM_EXECUTION_STATE}, | ||
| * {@link POWER_INFORMATION_LEVEL#SYSTEM_POWER_CAPABILITIES}, | ||
| * {@link POWER_INFORMATION_LEVEL#SYSTEM_POWER_INFORMATION}, | ||
| * {@link POWER_INFORMATION_LEVEL#SYSTEM_POWER_POLICY_AC}, | ||
| * {@link POWER_INFORMATION_LEVEL#SYSTEM_POWER_POLICY_CURRENT}, | ||
| * {@link POWER_INFORMATION_LEVEL#SYSTEM_POWER_POLICY_DC}, or | ||
| * {@link POWER_INFORMATION_LEVEL#SYSTEM_RESERVE_HIBER_FILE}. | ||
| * @param lpInputBuffer | ||
| * A pointer to an optional input buffer. The data type of this | ||
| * buffer depends on the information level requested in the | ||
| * {@code informationLevel} parameter. | ||
| * @param nInputBufferSize | ||
| * The size of the input buffer, in bytes. | ||
| * @param lpOutputBuffer | ||
| * A pointer to an optional output buffer. The data type of this | ||
| * buffer depends on the information level requested in the | ||
| * {@code informationLevel} parameter. If the buffer is too small | ||
| * to contain the information, the function returns | ||
| * {@link NTStatus#STATUS_BUFFER_TOO_SMALL}. | ||
| * @param nOutputBufferSize | ||
| * The size of the output buffer, in bytes. Depending on the | ||
| * information level requested, this may be a variably sized | ||
| * buffer. | ||
| * @return If the function succeeds, the return value is | ||
| * {@link NTStatus#STATUS_SUCCESS}. If the function fails, the | ||
| * return value can be one the following status codes: | ||
| * {@link NTStatus#STATUS_BUFFER_TOO_SMALL} if the output buffer is | ||
| * of insufficient size to contain the data to be returned. | ||
| * {@link NTStatus#STATUS_ACCESS_DENIED} if the caller had | ||
| * insufficient access rights to perform the requested action. | ||
| */ | ||
| int CallNtPowerInformation(int informationLevel, Pointer lpInputBuffer, int nInputBufferSize, | ||
| Pointer lpOutputBuffer, int nOutputBufferSize); | ||
| } | ||
|
|
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contrib/platform/test/com/sun/jna/platform/win32/PowrProfTest.java
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| Original file line number | Diff line number | Diff line change |
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| /* Copyright (c) 2019 Daniel Widdis, All Rights Reserved | ||
| * | ||
| * This library is free software; you can redistribute it and/or | ||
| * modify it under the terms of the GNU Lesser General Public | ||
| * License as published by the Free Software Foundation; either | ||
| * version 2.1 of the License, or (at your option) any later version. | ||
| * | ||
| * This library is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| * Lesser General Public License for more details. | ||
| */ | ||
| package com.sun.jna.platform.win32; | ||
|
|
||
| import com.sun.jna.Memory; | ||
| import com.sun.jna.platform.win32.PowrProf.POWER_INFORMATION_LEVEL; | ||
| import com.sun.jna.platform.win32.PowrProf.ProcessorPowerInformation; | ||
| import com.sun.jna.platform.win32.PowrProf.SystemBatteryState; | ||
| import com.sun.jna.platform.win32.WinBase.SYSTEM_INFO; | ||
|
|
||
| import junit.framework.TestCase; | ||
|
|
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| public class PowrProfTest extends TestCase { | ||
|
|
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| public void testProcessorPowerInformation() { | ||
| SYSTEM_INFO info = new SYSTEM_INFO(); | ||
| Kernel32.INSTANCE.GetSystemInfo(info); | ||
| int numProcs = info.dwNumberOfProcessors.intValue(); | ||
|
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| ProcessorPowerInformation ppi = new ProcessorPowerInformation(); | ||
| long[] freqs = new long[numProcs]; | ||
| int bufferSize = ppi.size() * numProcs; | ||
| Memory mem = new Memory(bufferSize); | ||
| assertEquals(NTStatus.STATUS_SUCCESS, PowrProf.INSTANCE | ||
| .CallNtPowerInformation(POWER_INFORMATION_LEVEL.PROCESSOR_INFORMATION, null, 0, | ||
| mem, bufferSize)); | ||
| for (int i = 0; i < freqs.length; i++) { | ||
| ppi = new ProcessorPowerInformation(mem.share(i * (long) ppi.size())); | ||
| assertTrue(ppi.currentMhz <= ppi.maxMhz); | ||
| } | ||
| } | ||
|
|
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| public void testSystemBatteryState() { | ||
| int size = new SystemBatteryState().size(); | ||
| Memory mem = new Memory(size); | ||
| assertEquals(NTStatus.STATUS_SUCCESS, | ||
| PowrProf.INSTANCE.CallNtPowerInformation(POWER_INFORMATION_LEVEL.SYSTEM_BATTERY_STATE, null, 0, mem, size)); | ||
| SystemBatteryState batteryState = new SystemBatteryState(mem); | ||
| if (batteryState.batteryPresent > 0) { | ||
| if (batteryState.acOnLine == 0 && batteryState.charging == 0 && batteryState.discharging > 0) { | ||
| assertTrue(batteryState.estimatedTime >= 0); | ||
| } | ||
| assertTrue(batteryState.remainingCapacity <= batteryState.maxCapacity); | ||
| } | ||
| } | ||
| } |