Class FreeBsdGlobalMemory

java.lang.Object
oshi.hardware.common.AbstractGlobalMemory
oshi.hardware.common.platform.unix.freebsd.FreeBsdGlobalMemory
All Implemented Interfaces:
GlobalMemory
public abstract class FreeBsdGlobalMemory extends AbstractGlobalMemory

  • Constructor Details

    • FreeBsdGlobalMemory

      public FreeBsdGlobalMemory()

  • Method Details

    • getAvailable

      public long getAvailable()
      Description copied from interface: GlobalMemory
      The amount of physical memory currently available, in bytes.
      Returns:
      Available number of bytes.

    • getTotal

      public long getTotal()
      Description copied from interface: GlobalMemory
      The amount of actual physical memory, in bytes.
      Returns:
      Total number of bytes.

    • getPageSize

      public long getPageSize()
      Description copied from interface: GlobalMemory
      The number of bytes in a memory page
      Returns:
      Page size in bytes.

    • getVirtualMemory

      public VirtualMemory getVirtualMemory()
      Description copied from interface: GlobalMemory
      Virtual memory, such as a swap file.

      Operating systems differ significantly in how they manage virtual memory. See the VirtualMemory class documentation for details on Windows commit-charge, Linux overcommit, and macOS compressed-memory models.

      Returns:
      A VirtualMemory object.

    • queryVmStats

      protected abstract long queryVmStats()
      Computes available memory from FreeBSD's vm.stats.vm.v_inactive_count + v_free_count, multiplied by page size. Subclasses provide the sysctl read mechanism (JNA via BsdSysctlUtil, FFM via direct sysctlbyname binding).
      Returns:
      available memory in bytes

    • queryPhysMem

      protected abstract long queryPhysMem()
      Reads hw.physmem via the subclass's sysctl mechanism.
      Returns:
      total installed physical memory in bytes

    • createVirtualMemory

      protected abstract VirtualMemory createVirtualMemory()
      Constructs the matching FreeBsdVirtualMemory concrete (JNA or FFM) for this instance.
      Returns:
      the VirtualMemory paired with this GlobalMemory implementation