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1 | // The lazy man's method of registering a VM bus listener |
2 | // You only need to keep a reference around but not to close() anything |
3 | // OTOH you depend on the GC for cleaning up your listener |
4 | // structures which is not so good |
5 | sclass WeakRefVMBusListener extends WeakReference implements IF2<S, O, O> {
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6 | Set listeners; // where we were added |
7 | |
8 | *(Set *listeners, O listener) { super(listener); }
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9 | *(Set *listeners, IVF2<S, O> listener) { super(listener); }
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10 | |
11 | public O get(S msg, O arg) {
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12 | O listener = get(); |
13 | if (listener == null) {
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14 | ifdef WeakRefVMBusListener_debug |
15 | print WeakRefVMBusListener_debug("Removing VM bus listener");
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16 | endifdef |
17 | remove(listeners, this); |
18 | null; |
19 | } |
20 | ret callF(listener, msg, arg); |
21 | } |
22 | } |
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| Snippet ID: | #1031569 |
| Snippet name: | WeakRefVMBusListener |
| Eternal ID of this version: | #1031569/9 |
| Text MD5: | 59f6e889cc319db0dd2c04c424758ba6 |
| Transpilation MD5: | b86b671393602b377763c308354b43db |
| Author: | stefan |
| Category: | javax |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2021-06-22 04:04:35 |
| Source code size: | 778 bytes / 22 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 221 / 397 |
| Version history: | 8 change(s) |
| Referenced in: | [show references] |