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* Ignore upcall_flush for channels that are disassociated from ports. This ↵Michael Bebenita2010-08-111-2/+2
| | | | makes task-comm-10 break a little less hard, but it still leaks because messages pending in the channel are never freed.
* Synthesize a flush_chan upcall right before a channel's ref_count drops to ↵Michael Bebenita2010-08-091-3/+21
| | | | zero. This should only happen in the Rust code and not in the drop glue, or on the unwind path. This change allows the task owning the channel to block on a flush and delete its own channel. This change also cleans up some code around rust_port and rust_chan.
* Some pretty printing in the runtime.Michael Bebenita2010-08-091-0/+16
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* Move ports out into their own file, add data_message and make communication ↵Michael Bebenita2010-07-281-0/+39
system use it (and proxies) instead of existing token scheme.