LongPairCollector (backup) - concurrent collector for 2 longs with overridable & swappable complete() function [1035582]

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JavaX fragment (include)

// assumes that each set function is called exactly once
// (but it doesn't matter which thread you call each of them from.)
sclass LongPairCollector > AtomicCounter {
  volatile long a;
  volatile long b;

  void setA(long a) { this.a = a; itemReceived(); }
  void setB(long b) { this.b = b; itemReceived(); }
  
  LongConsumer setA aka setterForA() { ret a -> setA(a); }
  LongConsumer setB aka setterForB() { ret b -> setB(b); }
  
  void itemReceived {
    if (incCounter() == 2)
      complete(a, b);
  }
  
  // can override or swap
  swappable void complete(long a, long b) {}
}

Author comment

Began life as a copy of #1035570

Travelled to 2 computer(s): mowyntqkapby, mqqgnosmbjvj

Snippet ID:

#1035582

Snippet name:

LongPairCollector (backup) - concurrent collector for 2 longs with overridable & swappable complete() function

Eternal ID of this version:

#1035582/1

Text MD5:

8bbdc860f7ee82807886a904a6781898

Author:

stefan

Category:

javax / parallelism

Type:

JavaX fragment (include)

Public (visible to everyone):

Yes

Archived (hidden from active list):

Created/modified:

2022-06-19 04:20:34

Source code size:

604 bytes / 20 lines

Pitched / IR pitched:

No / No

Views / Downloads:

349 / 362

Referenced in:

[show references]

1	// assumes that each set function is called exactly once
2	// (but it doesn't matter which thread you call each of them from.)
3	sclass LongPairCollector > AtomicCounter {
4	volatile long a;
5	volatile long b;
6
7	void setA(long a) { this.a = a; itemReceived(); }
8	void setB(long b) { this.b = b; itemReceived(); }
9
10	LongConsumer setA aka setterForA() { ret a -> setA(a); }
11	LongConsumer setB aka setterForB() { ret b -> setB(b); }
12
13	void itemReceived {
14	if (incCounter() == 2)
15	complete(a, b);
16	}
17
18	// can override or swap
19	swappable void complete(long a, long b) {}
20	}