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Put the lonely lang items here closer to the code they are calling.
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Fixes GH #11976.
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This also drops support for the managed pointer POISON_ON_FREE feature
as it's not worth adding back the support for it. After a snapshot, the
leftovers can be removed.
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This hasn't been in use since `@mut` was removed
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with the intrinsic.
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This extracts everything related to green scheduling from libstd and introduces
a new libgreen crate. This mostly involves deleting most of std::rt and moving
it to libgreen.
Along with the movement of code, this commit rearchitects many functions in the
scheduler in order to adapt to the fact that Local::take now *only* works on a
Task, not a scheduler. This mostly just involved threading the current green
task through in a few locations, but there were one or two spots where things
got hairy.
There are a few repercussions of this commit:
* tube/rc have been removed (the runtime implementation of rc)
* There is no longer a "single threaded" spawning mode for tasks. This is now
encompassed by 1:1 scheduling + communication. Convenience methods have been
introduced that are specific to libgreen to assist in the spawning of pools of
schedulers.
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- `begin_unwind` is now generic over any `T: Any + Send`.
- Every value you fail with gets boxed as an `~Any`.
- Because of implementation details, `&'static str` and `~str` are still
handled specially behind the scenes.
- Changed the big macro source string in libsyntax to a raw string
literal, and enabled doc comments there.
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This allows a function to marked as infrequently called, resulting in
any branch calling it to be considered colder.
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Closes #10023
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casting the `uint` to an `int` can result in printing high values as
negative intege
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This change was waiting for privacy to get sorted out, which should be true now
that #8215 has landed.
Closes #4427
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This removes the stacking of type parameters that occurs when invoking
trait methods, and fixes all places in the standard library that were
relying on it. It is somewhat awkward in places; I think we'll probably
want something like the `Foo::<for T>::new()` syntax.
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.with_c_str() is a replacement for the old .as_c_str(), to avoid
unnecessary boilerplate.
Replace all usages of .to_c_str().with_ref() with .with_c_str().
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I did this once but acciddentally undid it in a later patch.
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This PR fixes #7235 and #3371, which removes trailing nulls from `str` types. Instead, it replaces the creation of c strings with a new type, `std::c_str::CString`, which wraps a malloced byte array, and respects:
* No interior nulls
* Ends with a trailing null
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remove-str-trailing-nulls
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Mostly optimizing TLS accesses to bring local heap allocation performance
closer to that of oldsched. It's not completely at parity but removing the
branches involved in supporting oldsched and optimizing pthread_get/setspecific
to instead use our dedicated TCB slot will probably make up for it.
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remove-str-trailing-nulls
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This stuff is ancient, unused, and tied to oldsched
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old design the TLS held the scheduler struct, and the scheduler struct
held the active task. This posed all sorts of weird problems due to
how we wanted to use the contents of TLS. The cleaner approach is to
leave the active task in TLS and have the task hold the scheduler. To
make this work out the scheduler has to run inside a regular task, and
then once that is the case the context switching code is massively
simplified, as instead of three possible paths there is only one. The
logical flow is also easier to follow, as the scheduler struct acts
somewhat like a "token" indicating what is active.
These changes also necessitated changing a large number of runtime
tests, and rewriting most of the runtime testing helpers.
Polish level is "low", as I will very soon start on more scheduler
changes that will require wiping the polish off. That being said there
should be sufficient comments around anything complex to make this
entirely respectable as a standalone commit.
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This stuff is ancient, unused, and tied to oldsched
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These uses are assuming the strings are null terminated, so it
should be using `as_c_str` instead of `as_buf`
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Place `pub` or `priv` on individual items instead.
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Conflicts:
src/libextra/test.rs
src/libstd/at_vec.rs
src/libstd/cleanup.rs
src/libstd/rt/comm.rs
src/libstd/rt/global_heap.rs
src/libstd/task/spawn.rs
src/libstd/unstable/lang.rs
src/libstd/vec.rs
src/rt/rustrt.def.in
src/test/run-pass/extern-pub.rs
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of tasks as a component of coroutines.
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* stop using an atomic counter, this has a significant cost and
valgrind will already catch these leaks
* remove the extra layer of function calls
* remove the assert of non-null in free, freeing null is well defined
but throwing a failure from free will not be
* stop initializing the `prev`/`next` pointers
* abort on out-of-memory, failing won't necessarily work
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Conflicts:
src/rt/rust_builtin.cpp
src/rt/rustrt.def.in
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Conflicts:
src/libstd/rt/comm.rs
src/libstd/rt/mod.rs
src/libstd/rt/sched.rs
src/libstd/rt/task.rs
src/libstd/rt/test.rs
src/libstd/rt/tube.rs
src/libstd/rt/uv/uvio.rs
src/libstd/rt/uvio.rs
src/libstd/task/spawn.rs
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branch and modified the incoming new file lang.rs to be api-compatible
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