content: /*
   ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
   ~                                                                               ~
   ~ The MIT License (MIT)                                                         ~
   ~                                                                               ~
   ~ Copyright (c) 2015-2025 miaixz.org OSHI and other contributors.               ~
   ~                                                                               ~
   ~ Permission is hereby granted, free of charge, to any person obtaining a copy  ~
   ~ of this software and associated documentation files (the "Software"), to deal ~
   ~ in the Software without restriction, including without limitation the rights  ~
   ~ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell     ~
   ~ copies of the Software, and to permit persons to whom the Software is         ~
   ~ furnished to do so, subject to the following conditions:                      ~
   ~                                                                               ~
   ~ The above copyright notice and this permission notice shall be included in    ~
   ~ all copies or substantial portions of the Software.                           ~
   ~                                                                               ~
   ~ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR    ~
   ~ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,      ~
   ~ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE   ~
   ~ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER        ~
   ~ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, ~
   ~ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN     ~
   ~ THE SOFTWARE.                                                                 ~
   ~                                                                               ~
   ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
  */
  package org.miaixz.bus.health.unix.platform.freebsd.hardware;
  
  import java.util.function.Supplier;
  
  import org.miaixz.bus.core.center.regex.Pattern;
  import org.miaixz.bus.core.lang.annotation.ThreadSafe;
  import org.miaixz.bus.health.Executor;
  import org.miaixz.bus.health.Memoizer;
  import org.miaixz.bus.health.Parsing;
  import org.miaixz.bus.health.builtin.hardware.common.AbstractVirtualMemory;
  import org.miaixz.bus.health.unix.platform.freebsd.BsdSysctlKit;
  
  /**
   * Memory obtained by swapinfo
   *
   * @author Kimi Liu
   * @since Java 17+
   */
  @ThreadSafe
  final class FreeBsdVirtualMemory extends AbstractVirtualMemory {
  
      private final FreeBsdGlobalMemory global;
  
      private final Supplier<Long> used = Memoizer
              .memoize(FreeBsdVirtualMemory::querySwapUsed, Memoizer.defaultExpiration());
  
      private final Supplier<Long> total = Memoizer
              .memoize(FreeBsdVirtualMemory::querySwapTotal, Memoizer.defaultExpiration());
  
      private final Supplier<Long> pagesIn = Memoizer
              .memoize(FreeBsdVirtualMemory::queryPagesIn, Memoizer.defaultExpiration());
  
      private final Supplier<Long> pagesOut = Memoizer
              .memoize(FreeBsdVirtualMemory::queryPagesOut, Memoizer.defaultExpiration());
  
      FreeBsdVirtualMemory(FreeBsdGlobalMemory freeBsdGlobalMemory) {
          this.global = freeBsdGlobalMemory;
      }
  
      private static long querySwapUsed() {
          String swapInfo = Executor.getAnswerAt("swapinfo -k", 1);
          String[] split = Pattern.SPACES_PATTERN.split(swapInfo);
          if (split.length < 5) {
              return 0L;
          }
          return Parsing.parseLongOrDefault(split[2], 0L) << 10;
      }
  
      private static long querySwapTotal() {
          return BsdSysctlKit.sysctl("vm.swap_total", 0L);
      }
  
      private static long queryPagesIn() {
          return BsdSysctlKit.sysctl("vm.stats.vm.v_swappgsin", 0L);
      }
  
      private static long queryPagesOut() {
          return BsdSysctlKit.sysctl("vm.stats.vm.v_swappgsout", 0L);
      }
  
      @Override
      public long getSwapUsed() {
          return used.get();
      }
  
      @Override
      public long getSwapTotal() {
          return total.get();
      }
  
      @Override
      public long getVirtualMax() {
          return this.global.getTotal() + getSwapTotal();
      }
  
      @Override
      public long getVirtualInUse() {
          return this.global.getTotal() - this.global.getAvailable() + getSwapUsed();
      }
  
      @Override
      public long getSwapPagesIn() {
          return pagesIn.get();
      }
  
      @Override
      public long getSwapPagesOut() {
          return pagesOut.get();
      }
  
  }
  