< > BotCompany Repo | #1012109 // Measure size of fairLock (ReentrantLock) - 48 bytes in CompressedOOPS 64 Bit VM

JavaX source code [tags: use-pretranspiled] - run with: x30.jar

Libraryless. Click here for Pure Java version (966L/7K/24K).

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static int n = 1000000;

p {
  O[] array = new O[n];
  long mem1 = usedMemoryAfterGC();
  
  for i over array:
    array[i] = fairLock();
    
  long mem2 = usedMemoryAfterGC();
  double objSize = (mem2-mem1)/(double) l(array);
  int rounded = iround(objSize);
  //long f = guessHashMapSize(tableSize);
  print("Approximate object size: " + objSize + " => " + rounded + " bytes");
}

Author comment

Began life as a copy of #1009433

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