Scheduling and Task Safety Improvements#753

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eholk wants to merge 11 commits intorust-lang:masterfrom

Commits on Jul 27, 2011

Made root_task no longer special.
Eric Holk
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Per-thread scheduling. Closes #682.
Eric Holk
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Re-removing a test case that was moved during the big test suite overhaul.
Eric Holk
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Adding a function to stdlib to set the min stack size, for programs
Eric Holk
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Made task threads wait instead of sleep, so they can be woken up. This appears to give us much better parallel performance.
Eric Holk
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Adding upcalls to to ref() and deref() tasks. This is the first step towards atomic reference counting of tasks.
Eric Holk
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Atomic reference counting for tasks.
Eric Holk
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Removed outdated comment.
Eric Holk
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Resurrecting some of the logging in rust_chan.cpp
Eric Holk
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Re-enabled the rest of the asserts and things in rust_chan.cpp
Eric Holk
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Commits on Jul 28, 2011

Updating to work on Windows.
Eric Holk
committed