Module io.smallrye.common.cpu
Package io.smallrye.common.cpu

Class CacheInfo

java.lang.Object
io.smallrye.common.cpu.CacheInfo
public final class CacheInfo extends Object
A class which exposes any available cache line information for the current CPU.

  • Method Details

    • getLevelEntryCount

      public static int getLevelEntryCount()
      Get the number of CPU cache level entries. If no cache information could be gathered, 0 is returned.
      Returns:
      the number of CPU cache levels, or 0 if unknown

    • getCacheLevelInfo

      public static CacheLevelInfo getCacheLevelInfo(int index)
      Get the CPU cache level information for a cache level. The index argument must be greater than zero and less than the number of levels returned by getLevelEntryCount().
      Parameters:
      index - the cache level index
      Returns:
      the CPU cache level information

    • getSmallestDataCacheLineSize

      public static int getSmallestDataCacheLineSize()
      Get the smallest known data cache line size. If no cache line sizes are known, 0 is returned. Note that smaller cache lines may exist if one or more cache line sizes are unknown.
      Returns:
      the smallest cache line size, or 0 if unknown

    • getSmallestInstructionCacheLineSize

      public static int getSmallestInstructionCacheLineSize()
      Get the smallest known instruction cache line size. If no cache line sizes are known, 0 is returned. Note that smaller cache lines may exist if one or more cache line sizes are unknown.
      Returns:
      the smallest cache line size, or 0 if unknown

    • main

      public static void main(String[] args)
      A simple main method which prints cache info when called.
      Parameters:
      args - ignored