io: Implement process wait timeouts #13957
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4 tasks
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cc @carllerche |
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r? @brson |
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Updated with comments. |
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r=me if you've addressed my comments |
bors
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May 12, 2014
This implements set_timeout() for std::io::Process which will affect wait() operations on the process. This follows the same pattern as the rest of the timeouts emerging in std::io::net. The implementation was super easy for everything except libnative on unix (backwards from usual!), which required a good bit of signal handling. There's a doc comment explaining the strategy in libnative. Internally, this also required refactoring the "helper thread" implementation used by libnative to allow for an extra helper thread (not just the timer). This is a breaking change in terms of the io::Process API. It is now possible for wait() to fail, and subsequently wait_with_output(). These two functions now return IoResult<T> due to the fact that they can time out. Additionally, the wait_with_output() function has moved from taking `&mut self` to taking `self`. If a timeout occurs while waiting with output, the semantics are undesirable in almost all cases if attempting to re-wait on the process. Equivalent functionality can still be achieved by dealing with the output handles manually. [breaking-change] cc #13523
This implements set_timeout() for std::io::Process which will affect wait() operations on the process. This follows the same pattern as the rest of the timeouts emerging in std::io::net. The implementation was super easy for everything except libnative on unix (backwards from usual!), which required a good bit of signal handling. There's a doc comment explaining the strategy in libnative. Internally, this also required refactoring the "helper thread" implementation used by libnative to allow for an extra helper thread (not just the timer). This is a breaking change in terms of the io::Process API. It is now possible for wait() to fail, and subsequently wait_with_output(). These two functions now return IoResult<T> due to the fact that they can time out. Additionally, the wait_with_output() function has moved from taking `&mut self` to taking `self`. If a timeout occurs while waiting with output, the semantics are undesirable in almost all cases if attempting to re-wait on the process. Equivalent functionality can still be achieved by dealing with the output handles manually. [breaking-change] cc rust-lang#13523
bors
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May 14, 2014
Closes #14184 (std: Move the owned module from core to std) Closes #14183 (Allow blocks in const expressions) Closes #14176 (Add tests for from_bits.) Closes #14175 (Replaced ~T by Box<T> in manual) Closes #14173 (Implements Default trait for BigInt and BigUint) Closes #14171 (Fix #8391) Closes #14159 (Clean up unicode code in libstd) Closes #14126 (docs: Add a not found page) Closes #14123 (add a line to the example to clarify semantics) Closes #14106 (Pretty printer improvements) Closes #14083 (rustllvm: Add LLVMRustArrayType) Closes #13957 (io: Implement process wait timeouts)
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This implements set_timeout() for std::io::Process which will affect wait()
operations on the process. This follows the same pattern as the rest of the
timeouts emerging in std::io::net.
The implementation was super easy for everything except libnative on unix
(backwards from usual!), which required a good bit of signal handling. There's a
doc comment explaining the strategy in libnative. Internally, this also required
refactoring the "helper thread" implementation used by libnative to allow for an
extra helper thread (not just the timer).
This is a breaking change in terms of the io::Process API. It is now possible
for wait() to fail, and subsequently wait_with_output(). These two functions now
return IoResult due to the fact that they can time out.
Additionally, the wait_with_output() function has moved from taking
&mut selfto taking
self. If a timeout occurs while waiting with output, the semanticsare undesirable in almost all cases if attempting to re-wait on the process.
Equivalent functionality can still be achieved by dealing with the output
handles manually.
[breaking-change]
cc #13523