BetterThreadLocal - no memory leaks. sadly (but I bet it's _really_ ok! Has anyone checked whether it makes any difference in practice?) a bit slower than ThreadLocal [1011383]

< > BotCompany Repo | #1011383 // BetterThreadLocal - no memory leaks. sadly (but I bet it's _really_ ok! Has anyone checked whether it makes any difference in practice?) a bit slower than ThreadLocal

JavaX fragment (include) [tags: use-pretranspiled]

// Note: This does have the values problem (complicated values can cause memory leaks)
sclass BetterThreadLocal<A> {
  Map<Thread, A> map = newWeakHashMap();
  
  *() {}
  *(A value) { set(value); }
  
  bool isSet() { ret map.containsKey(currentThread()); }
  
  A get() {
    if (map.containsKey(currentThread()))
      ret map.get(currentThread());
    A value = initialValue();
    set(value);
    ret value;
  }
  
  A get(Thread thread) {
    ret thread == null ? null : map.get(thread);
  }
  
  void set(A a) {
    map.put(currentThread(), a);
  }
  
  public A initialValue() { null; }
}

Author comment

Also this can give you the value for another thread.

Travelled to 15 computer(s): aoiabmzegqzx, bhatertpkbcr, cbybwowwnfue, cfunsshuasjs, gwrvuhgaqvyk, ishqpsrjomds, lpdgvwnxivlt, mqqgnosmbjvj, onxytkatvevr, ppjhyzlbdabe, pyentgdyhuwx, pzhvpgtvlbxg, tslmcundralx, tvejysmllsmz, vouqrxazstgt

Snippet ID:

#1011383

Snippet name:

BetterThreadLocal - no memory leaks. sadly (but I bet it's _really_ ok! Has anyone checked whether it makes any difference in practice?) a bit slower than ThreadLocal

Eternal ID of this version:

#1011383/13

Text MD5:

0118518547504817300fd4ca958cad1e

Transpilation MD5:

c31e697507eacc906cac33150ab4679c

Author:

stefan

Category:

javax

Type:

JavaX fragment (include)

Public (visible to everyone):

Yes

Archived (hidden from active list):

Created/modified:

2021-11-01 23:53:35

Source code size:

622 bytes / 27 lines

Pitched / IR pitched:

No / No

Views / Downloads:

523 / 1780

Version history:

12 change(s)

Referenced in:

[show references]

1	// Note: This does have the values problem (complicated values can cause memory leaks)
2	sclass BetterThreadLocal<A> {
3	Map<Thread, A> map = newWeakHashMap();
4
5	*() {}
6	*(A value) { set(value); }
7
8	bool isSet() { ret map.containsKey(currentThread()); }
9
10	A get() {
11	if (map.containsKey(currentThread()))
12	ret map.get(currentThread());
13	A value = initialValue();
14	set(value);
15	ret value;
16	}
17
18	A get(Thread thread) {
19	ret thread == null ? null : map.get(thread);
20	}
21
22	void set(A a) {
23	map.put(currentThread(), a);
24	}
25
26	public A initialValue() { null; }
27	}