Measure size of synchronized LinkedHashMap [1034068]

< > BotCompany Repo | #1034068 // Measure size of synchronized LinkedHashMap

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

!7

static int n = 100000;

p {
  for (int tableSize = 0; tableSize <= 10; tableSize ++) {
    O[] data = arrayOfBlankObjects(tableSize);
    O[] array = new O[n];
    long mem1 = usedMemoryAfterGC();
    for i over array: {
      var map = Collections.synchronizedMap(new LinkedHashMap);
      for (O x : data) map.put(x, x);
      array[i] = map;
    }
    long mem2 = usedMemoryAfterGC();
    double objSize = (mem2-mem1)/(double) l(array);
    int rounded = iround(objSize);
    print("Object size=" + tableSize + ". Approximate object size: " + objSize + " => " + rounded + " bytes");
  }
}

Author comment

Began life as a copy of #1009433

Travelled to 3 computer(s): bhatertpkbcr, mowyntqkapby, mqqgnosmbjvj

Snippet ID:

#1034068

Snippet name:

Measure size of synchronized LinkedHashMap

Eternal ID of this version:

#1034068/5

Text MD5:

31feb1efe10f9d20fdc21621418c99a1

Transpilation MD5:

dfee5efac68305a6cbda8d8b55dc2c37

Author:

stefan

Category:

javax

Type:

JavaX source code

Public (visible to everyone):

Yes

Archived (hidden from active list):

Created/modified:

2022-01-20 01:56:36

Source code size:

614 bytes / 20 lines

Pitched / IR pitched:

No / No

Views / Downloads:

365 / 501

Version history:

4 change(s)

Referenced in:

[show references]

1	!7
2
3	static int n = 100000;
4
5	p {
6	for (int tableSize = 0; tableSize <= 10; tableSize ++) {
7	O[] data = arrayOfBlankObjects(tableSize);
8	O[] array = new O[n];
9	long mem1 = usedMemoryAfterGC();
10	for i over array: {
11	var map = Collections.synchronizedMap(new LinkedHashMap);
12	for (O x : data) map.put(x, x);
13	array[i] = map;
14	}
15	long mem2 = usedMemoryAfterGC();
16	double objSize = (mem2-mem1)/(double) l(array);
17	int rounded = iround(objSize);
18	print("Object size=" + tableSize + ". Approximate object size: " + objSize + " => " + rounded + " bytes");
19	}
20	}