Mercurial > hg > thermostat
view common/portability/src/main/java/com/redhat/thermostat/common/portability/internal/windows/WindowsHelperImpl.java @ 2575:902e2e96f4e8
A preliminary port of Thermostat to macos.
It is quite usable except for statistics that query the OS (like memory and IO usage over time).
The main unfinished business:
- native code for memory and IO usage
- JUnit
- GUI often hangs on exit.
- Mac .app bundle build
Reviewed-by: neugens
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2017-January/022086.html
author | Simon Tooke <stooke@redhat.com> |
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date | Mon, 30 Jan 2017 13:06:07 -0500 |
parents | b98beac5559c |
children | 648dc28c87ed |
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/* * Copyright 2012-2017 Red Hat, Inc. * * This file is part of Thermostat. * * Thermostat is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 2, or (at your * option) any later version. * * Thermostat 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 * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Thermostat; see the file COPYING. If not see * <http://www.gnu.org/licenses/>. * * Linking this code with other modules is making a combined work * based on this code. Thus, the terms and conditions of the GNU * General Public License cover the whole combination. * * As a special exception, the copyright holders of this code give * you permission to link this code with independent modules to * produce an executable, regardless of the license terms of these * independent modules, and to copy and distribute the resulting * executable under terms of your choice, provided that you also * meet, for each linked independent module, the terms and conditions * of the license of that module. An independent module is a module * which is not derived from or based on this code. If you modify * this code, you may extend this exception to your version of the * library, but you are not obligated to do so. If you do not wish * to do so, delete this exception statement from your version. */ package com.redhat.thermostat.common.portability.internal.windows; import com.redhat.thermostat.common.utils.LoggingUtils; import com.redhat.thermostat.shared.config.NativeLibraryResolver; import com.redhat.thermostat.shared.config.OS; import java.util.Collections; import java.util.HashMap; import java.util.Map; import java.util.logging.Logger; /** * Utility class to access Windows native code */ public class WindowsHelperImpl { private static final Logger logger = LoggingUtils.getLogger(WindowsHelperImpl.class); public static WindowsHelperImpl INSTANCE; /* // from MemoryStatusEx (8 values) DWORD dwMemoryLoad; DWORDLONG ullTotalPhys; DWORDLONG ullAvailPhys; DWORDLONG ullTotalPageFile; DWORDLONG ullAvailPageFile; DWORDLONG ullTotalVirtual; DWORDLONG ullAvailVirtual; DWORDLONG ullAvailExtendedVirtual; // from PERFORMANCE_INFORMATION (13 values) SIZE_T CommitTotal; SIZE_T CommitLimit; SIZE_T CommitPeak; SIZE_T PhysicalTotal; SIZE_T PhysicalAvailable; SIZE_T SystemCache; SIZE_T KernelTotal; SIZE_T KernelPaged; SIZE_T KernelNonpaged; SIZE_T PageSize; DWORD HandleCount; DWORD ProcessCount; DWORD ThreadCount; */ static { if (OS.IS_WINDOWS) { String lib = NativeLibraryResolver.getAbsoluteLibraryPath("WindowsHelperWrapper"); try { System.load(lib); INSTANCE = new WindowsHelperImpl(); } catch (UnsatisfiedLinkError e) { logger.severe("Could not load WindowsHelperImpl DLL:" + lib); INSTANCE = null; // do not throw here, because you'll get a NoClassDefFound thrown when running other tests that Mock this class } } else { INSTANCE = null; } } private WindowsHelperImpl() { } // local host-wide information public String getHostName() { return getHostName0(true); } public String getOSName() { return System.getProperty("os.name"); } public String getOSVersion() { final long info[] = new long[3]; // major, minor, build getOSVersion0(info); return "" + info[0] + "" + info[1] + " (Build " + info[2] + ")"; } public String getCPUModel() { return getCPUString0(); } public int getCPUCount() { return getCPUCount0(); } public long getTotalMemory() { final long info[] = getMemoryInfo(); return info[1]; // totalPhysical } long[] getMemoryInfo() { /** * data[0] = statex.dwMemoryLoad; data[1] = statex.ullTotalPhys; data[2] = statex.ullAvailPhys; data[3] = statex.ullTotalPageFile; data[4] = statex.ullAvailPageFile; data[5] = statex.ullTotalVirtual; data[6] = statex.ullAvailVirtual; data[7] = statex.ullAvailExtendedVirtual; */ final long[] mi = new long[8]; getGlobalMemoryStatus0(mi); return mi; } public long getClockTicksPerSecond() { // we "know" this is 10E7 (units from getProcessStat) // but calculate it anyways from current process final long[] info = INSTANCE.getProcessCPUInfo(0); return info[4]; } // local process-specific information public boolean exists(int pid) { final long hnd = getLimitedProcessHandle0(pid); if (hnd != 0) { closeHandle0(hnd); } return hnd != 0; } public String getUserName(int pid) { return getUserName0(pid,true); } public int getUid(int pid) { final String sid = getProcessSID0(pid); if (sid == null) { return -1; } final int idx = sid.lastIndexOf('-'); final String uidStr = sid.substring(idx+1); return Integer.parseInt(uidStr); } public Map<String, String> getEnvironment(int pid) { // the environment is returned as a 1D array of alternating env names and values final String[] envArray = getEnvironment0(pid); if (envArray == null || envArray.length == 0) { return Collections.emptyMap(); } if (envArray.length % 2 != 0) { throw new AssertionError("environment array length not even"); } final Map<String, String> env = new HashMap<>(envArray.length/2); for (int i = 0; i < envArray.length / 2; i++) { env.put(envArray[i * 2], envArray[i * 2 + 1]); } return env; } /** * fetch process counters * @param pid process id * @return long[] working set size, user time, kernel time, (todo: elapsed time), ticks per second */ long[] getProcessCPUInfo(int pid) { final long[] info = new long[5]; getProcessInfo0(pid, info); return info; } long[] getProcessMemInfo(int pid) { final long[] info = new long[5]; getProcessInfo0(pid, info); return info; } long[] getProcessIOInfo(int pid) { final long info[] = new long[6]; getProcessIOInfo0(pid,info); return info; } public long getProcessHandle(int pid) { return getProcessHandle0(pid); } public void closeHandle(long handle) { closeHandle0(handle); } public boolean terminateProcess(int pid) { return terminateProcess0(pid,0, -1); } public boolean terminateProcess(int pid, boolean wait) { return terminateProcess0(pid,0, 0); } public boolean terminateProcess(int pid, int exitcode, int waitMillis) { return terminateProcess0(pid, exitcode, waitMillis); } private static native String getHostName0(boolean prependDomain); private static native void getOSVersion0(long[] versionAndBuild); private static native boolean getGlobalMemoryStatus0(long[] info); private static native String getCPUString0(); private static native int getCPUCount0(); private static native long queryPerformanceFrequency0(); private static native String getProcessSID0(int pid); private static native String getUserName0(int pid, boolean prependDomain); private static native String[] getEnvironment0(int pid); private static native boolean getProcessInfo0(int pid, long[] info); private static native boolean getProcessIOInfo0(int pid, long[] info); private static native long getCurrentProcessHandle0(); private static native long getProcessHandle0(int pid); private static native long getLimitedProcessHandle0(int pid); private static native void closeHandle0(long handle); private static native boolean terminateProcess0(int pid, int exitCode, int waitMillis); }