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Revise std::thread API to join by default

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This commit is part of a series that introduces a `std::thread` API to
replace `std::task`.

In the new API, `spawn` returns a `JoinGuard`, which by default will
join the spawned thread when dropped. It can also be used to join
explicitly at any time, returning the thread's result. Alternatively,
the spawned thread can be explicitly detached (so no join takes place).

As part of this change, Rust processes now terminate when the main
thread exits, even if other detached threads are still running, moving
Rust closer to standard threading models. This new behavior may break code
that was relying on the previously implicit join-all.

In addition to the above, the new thread API also offers some built-in
support for building blocking abstractions in user space; see the module
doc for details.

Closes #18000

[breaking-change]
This commit is contained in:
Aaron Turon 2014-12-14 00:05:32 -08:00
parent 13f302d0c5
commit a27fbac868
86 changed files with 464 additions and 1786 deletions
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4
src/libstd/sys/common/backtrace.rs
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@ -10,8 +10,8 @@
use io::{IoResult, Writer};
use iter::{Iterator, IteratorExt};
use option::{Some, None};
use result::{Ok, Err};
use option::Option::{Some, None};
use result::Result::{Ok, Err};
use str::{StrPrelude, from_str};
use unicode::char::UnicodeChar;