OnStableValue [1019579]

< > BotCompany Repo | #1019579 // OnStableValue

JavaX fragment (include)

sclass OnStableValue<A> extends WaitForStableValue<A> {
  long period;
  A value;
  long valueSince;
  O runnable;
  A lastStableValue;
  
  *() {}
  *(long *period, O *runnable) {}
  *(double seconds, O *runnable) { period = toMS(seconds); }
  
  synchronized void set(A a) {
    if (neq(a, value)) {
      value = a;
      valueSince = sysNow();
      doLater(period, r check); // TODO: slightly dicey
    }
  }
  
  synchronized void check() {
    A a = get();
    if (neq(a, lastStableValue)) {
      lastStableValue = a;
      callF(runnable, a);
    }
  }
  
  synchronized A get() {
    ret valueSince != 0 && sysNow() >= valueSince+period ? value : null;
  }
  
  public bool has() { ret get() != null; }
}

Author comment

Began life as a copy of #1015867

Travelled to 12 computer(s): bhatertpkbcr, cbybwowwnfue, cfunsshuasjs, gwrvuhgaqvyk, irmadwmeruwu, ishqpsrjomds, lpdgvwnxivlt, mqqgnosmbjvj, pyentgdyhuwx, pzhvpgtvlbxg, tvejysmllsmz, vouqrxazstgt

Snippet ID:

#1019579

Snippet name:

OnStableValue

Eternal ID of this version:

#1019579/4

Text MD5:

e5a3c294e308825ed5038fd977280cd2

Author:

stefan

Category:

javax

Type:

JavaX fragment (include)

Public (visible to everyone):

Yes

Archived (hidden from active list):

Created/modified:

2018-11-12 20:12:09

Source code size:

746 bytes / 33 lines

Pitched / IR pitched:

No / No

Views / Downloads:

178 / 713

Version history:

3 change(s)

Referenced in:

[show references]

1	sclass OnStableValue<A> extends WaitForStableValue<A> {
2	long period;
3	A value;
4	long valueSince;
5	O runnable;
6	A lastStableValue;
7
8	*() {}
9	(long period, O *runnable) {}
10	(double seconds, O runnable) { period = toMS(seconds); }
11
12	synchronized void set(A a) {
13	if (neq(a, value)) {
14	value = a;
15	valueSince = sysNow();
16	doLater(period, r check); // TODO: slightly dicey
17	}
18	}
19
20	synchronized void check() {
21	A a = get();
22	if (neq(a, lastStableValue)) {
23	lastStableValue = a;
24	callF(runnable, a);
25	}
26	}
27
28	synchronized A get() {
29	ret valueSince != 0 && sysNow() >= valueSince+period ? value : null;
30	}
31
32	public bool has() { ret get() != null; }
33	}