Measure size of fairLock (ReentrantLock) - 48 bytes in CompressedOOPS 64 Bit VM [1012109]

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< > 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

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!7

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

download show line numbers debug dex old transpilations

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Snippet ID:	#1012109
Snippet name:	Measure size of fairLock (ReentrantLock) - 48 bytes in CompressedOOPS 64 Bit VM
Eternal ID of this version:	#1012109/7
Text MD5:	92dcc6a7917140ddc3a56b660724f9fe
Transpilation MD5:	d56e7130285da63ed984586635324237
Author:	stefan
Category:	javax
Type:	JavaX source code
Public (visible to everyone):	Yes
Archived (hidden from active list):	No
Created/modified:	2017-11-18 16:29:11
Source code size:	402 bytes / 17 lines
Pitched / IR pitched:	No / No
Views / Downloads:	681 / 843
Version history:	6 change(s)
Referenced in:	[show references]

1	!7
2
3	static int n = 1000000;
4
5	p {
6	O[] array = new O[n];
7	long mem1 = usedMemoryAfterGC();
8
9	for i over array:
10	array[i] = fairLock();
11
12	long mem2 = usedMemoryAfterGC();
13	double objSize = (mem2-mem1)/(double) l(array);
14	int rounded = iround(objSize);
15	//long f = guessHashMapSize(tableSize);
16	print("Approximate object size: " + objSize + " => " + rounded + " bytes");
17	}