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// Licensed to the Software Freedom Conservancy (SFC) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The SFC licenses this file
// to you 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 org.openqa.selenium.os;

import com.sun.jna.Native;
import com.sun.jna.Pointer;
import com.sun.jna.Structure;
import com.sun.jna.platform.win32.WinBase;
import com.sun.jna.platform.win32.WinNT;
import com.sun.jna.win32.W32APIOptions;

import java.util.Arrays;
import java.util.List;

import org.openqa.selenium.Beta;

@Beta
public interface Kernel32 extends com.sun.jna.platform.win32.Kernel32 {
  Kernel32 INSTANCE = (Kernel32) Native.loadLibrary(
      "kernel32", Kernel32.class, W32APIOptions.UNICODE_OPTIONS);

  WinNT.HANDLE CreateJobObject(WinBase.SECURITY_ATTRIBUTES attrs, String name);
  boolean SetInformationJobObject(HANDLE hJob, int JobObjectInfoClass, Pointer lpJobObjectInfo, int cbJobObjectInfoLength);
  boolean AssignProcessToJobObject(HANDLE hJob, HANDLE hProcess);
  boolean TerminateJobObject(HANDLE hJob, long uExitCode);
  int ResumeThread(HANDLE hThread);
  int GetProcessId(HANDLE Process);

  // 0x00000800
  int JOB_OBJECT_LIMIT_BREAKAWAY_OK = 2048;

  // 0x00002000
  int JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE = 8192;

  // see SetInformationJobObject at msdn
  int JobObjectExtendedLimitInformation = 9;

  // see SetInformationJobObject at msdn
  int JobObjectBasicUIRestrictions = 4;

  // 0x00000020
  int JOB_OBJECT_UILIMIT_GLOBALATOMS = 0x00000020;

  // 0x00000004
  int CREATE_SUSPENDED = 4;

  // 0x01000000
  int CREATE_BREAKAWAY_FROM_JOB = 16777216;

  static class JOBJECT_BASIC_LIMIT_INFORMATION extends Structure {
    public LARGE_INTEGER PerProcessUserTimeLimit;
    public LARGE_INTEGER PerJobUserTimeLimit;
    public int LimitFlags;
    public SIZE_T MinimumWorkingSetSize;
    public SIZE_T MaximumWorkingSetSize;
    public int ActiveProcessLimit;
    public ULONG_PTR Affinity;
    public int PriorityClass;
    public int SchedulingClass;

    protected List getFieldOrder() {
      return Arrays.asList("PerProcessUserTimeLimit", "PerJobUserTimeLimit", "LimitFlags",
          "MinimumWorkingSetSize", "MaximumWorkingSetSize", "ActiveProcessLimit", "Affinity",
          "PriorityClass", "SchedulingClass");
    }
  }

  static class IO_COUNTERS extends Structure {
    public ULONGLONG ReadOperationCount;
    public ULONGLONG WriteOperationCount;
    public ULONGLONG OtherOperationCount;
    public ULONGLONG ReadTransferCount;
    public ULONGLONG WriteTransferCount;
    public ULONGLONG OtherTransferCount;

    protected List getFieldOrder() {
      return Arrays.asList("ReadOperationCount", "WriteOperationCount", "OtherOperationCount",
          "ReadTransferCount", "WriteTransferCount", "OtherTransferCount");
    }
  }

  static class JOBJECT_EXTENDED_LIMIT_INFORMATION extends Structure {
    public JOBJECT_EXTENDED_LIMIT_INFORMATION() {}

    public JOBJECT_EXTENDED_LIMIT_INFORMATION(Pointer memory) {
      super(memory);
    }

    public JOBJECT_BASIC_LIMIT_INFORMATION BasicLimitInformation;
    public IO_COUNTERS IoInfo;
    public SIZE_T ProcessMemoryLimit;
    public SIZE_T JobMemoryLimit;
    public SIZE_T PeakProcessMemoryUsed;
    public SIZE_T PeakJobMemoryUsed;

    protected List getFieldOrder() {
      return Arrays.asList("BasicLimitInformation", "IoInfo", "ProcessMemoryLimit",
          "JobMemoryLimit", "PeakProcessMemoryUsed", "PeakJobMemoryUsed");
    }

    public static class ByReference extends JOBJECT_EXTENDED_LIMIT_INFORMATION implements Structure.ByReference {
      public ByReference() {}

      public ByReference(Pointer memory) {
        super(memory);
      }
    }
  }

  static class JOBOBJECT_BASIC_UI_RESTRICTIONS extends Structure {
    public JOBOBJECT_BASIC_UI_RESTRICTIONS() {}

    public JOBOBJECT_BASIC_UI_RESTRICTIONS(Pointer memory) {
      super(memory);
    }

    public int UIRestrictionsClass;

    protected List getFieldOrder() {
      return Arrays.asList("UIRestrictionsClass");
    }

    public static class ByReference extends JOBOBJECT_BASIC_UI_RESTRICTIONS implements Structure.ByReference {
      public ByReference() {}

      public ByReference(Pointer memory) {
        super(memory);
      }
    }
  }

}