Created
August 6, 2012 22:30
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Idea for weakening shared state tasks
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| fn shared_state_task(..., other_ch: comm::chan<()>) { | |
| while ... { | |
| ... | |
| match msg { | |
| ... | |
| deref { | |
| ... | |
| if new_refcount == 0 { break; } | |
| } | |
| } | |
| } | |
| comm::send(other_ch, ()); | |
| } | |
| fn shared_state_supervisor_task(...) { | |
| let other_po = comm::port(); | |
| let other_ch = comm::chan(other_po); | |
| do task::spawn { | |
| shared_state_task(..., other_ch); | |
| } | |
| // FIXME: Once weaken_task is implemented with pipes, these can be merged into one task | |
| do weaken_task |weak_po| { | |
| if comm::select2(weak_po, other_po).is_left() { | |
| fail ~"destroying shared state cell"; // kill actual state task | |
| } // otherwise the state task signalled us | |
| } | |
| } | |
| fn shared_state(...) { | |
| do task::spawn_unlinked { | |
| shared_state_supervisor_task(...); | |
| } | |
| } |
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