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2017-05-05Rollup merge of #41064 - Gankro:ptr-redux, r=alexcrichtonCorey Farwell-10/+14
refactor NonZero, Shared, and Unique APIs Major difference is that I removed Deref impls, as apparently LLVM has trouble maintaining metadata with a `&ptr -> &ptr` API. This was cited as a blocker for ever stabilizing this API. It wasn't that ergonomic anyway. * Added `get` to NonZero to replace Deref impl * Added `ptr` getter to Shared/Unique to replace Deref impl * Added Unique's `get` and `get_mut` conveniences to Shared * Deprecated `as_mut_ptr` on Shared in favour of `ptr` Note that Shared used to primarily expose only `*const` but there isn't a good justification for that, so I made it `*mut`.
2017-05-05std: Prevent deadlocks in doctests on WindowsAlex Crichton-1/+3
Windows historically has problems with threads panicking and the main thread exiting at the same time, typically causing deadlocks. In the past (#25824) we've joined on threads but this just prevents running the test for now to avoid tampering with the example.
2017-05-05std: Avoid locks during TLS destruction on WindowsAlex Crichton-115/+93
Gecko recently had a bug reported [1] with a deadlock in the Rust TLS implementation for Windows. TLS destructors are implemented in a sort of ad-hoc fashion on Windows as it doesn't natively support destructors for TLS keys. To work around this the runtime manages a list of TLS destructors and registers a hook to get run whenever a thread exits. When a thread exits it takes a look at the list and runs all destructors. Unfortunately it turns out that there's a lock which is held when our "at thread exit" callback is run. The callback then attempts to acquire a lock protecting the list of TLS destructors. Elsewhere in the codebase while we hold a lock over the TLS destructors we try to acquire the same lock held first before our special callback is run. And as a result, deadlock! This commit sidesteps the issue with a few small refactorings: * Removed support for destroying a TLS key on Windows. We don't actually ever exercise this as a public-facing API, and it's only used during `lazy_init` during racy situations. To handle that we just synchronize `lazy_init` globally on Windows so we never have to call `destroy`. * With no need to support removal the global synchronized `Vec` was tranformed to a lock-free linked list. With the removal of locks this means that iteration no long requires a lock and as such we won't run into the deadlock problem mentioned above. Note that it's still a general problem that you have to be extra super careful in TLS destructors. For example no code which runs a TLS destructor on Windows can call back into the Windows API to do a dynamic library lookup. Unfortunately I don't know of a great way around that, but this at least fixes the immediate problem that Gecko was seeing which is that with "well behaved" destructors the system would still deadlock! [1]: https://bugzilla.mozilla.org/show_bug.cgi?id=1358151
2017-05-05Update mod.rsRaphaël Huchet-1/+1
2017-05-05Add an example to std::thread::Result typeRaphaël Huchet-0/+22
2017-05-04Reload nameserver information on lookup failureJon Gjengset-3/+21
As discussed in #41570, UNIX systems often cache the contents of /etc/resolv.conf, which can cause lookup failures to persist even after a network connection becomes available. This patch modifies lookup_host to force a reload of the nameserver entries following a lookup failure. This is in line with what many C programs already do (see #41570 for details). On systems with nscd, this should not be necessary, but not all systems run nscd. Introduces an std linkage dependency on libresolv on macOS/iOS (which also makes it necessary to update run-make/tools.mk). Fixes #41570. Depends on rust-lang/libc#585.
2017-05-04Deprecate heap::EMPTY in favour of Unique::empty or otherwise.Alexis Beingessner-1/+2
2017-05-04fallout from NonZero/Unique/Shared changesAlexis Beingessner-9/+12
2017-05-04Update mod.rsRaphaël Huchet-1/+1
2017-05-04create link to ResultRaphaël Huchet-0/+1
2017-05-04Join method returns a thread::ResultRaphaël Huchet-1/+1
2017-05-03Rollup merge of #41721 - mgattozzi:stdin-stdout-update, r=steveklabnikCorey Farwell-4/+6
Update ChildStdin/ChildStdout docs to be clearer This is part of https://github.com/rust-lang/rust/issues/29370 and continues the work from https://github.com/rust-lang/rust/pull/40829
2017-05-03Rollup merge of #41720 - frewsxcv:duration-doc-examples, r=steveklabnikCorey Farwell-4/+25
Improvements to `std::time::Duration` doc examples. Opened primarily for the last commit, in response to comments in https://github.com/rust-lang/rust/issues/39949.
2017-05-03Rollup merge of #41543 - z1mvader:master, r=steveklabnikCorey Farwell-11/+22
Rewrote the thread struct docs https://github.com/rust-lang/rust/issues/29378
2017-05-03Windows io::Error: also format NTSTATUS error codesJethro Beekman-3/+24
2017-05-03Update ChildStdin/ChildStdout docs to be clearerMichael Gattozzi-4/+6
2017-05-03Add doc example for how to determine total number of secs in Duration.Corey Farwell-0/+15
2017-05-02Update Duration::as_secs doc example to demonstrate truncation.Corey Farwell-2/+2
2017-05-02Update Duration::from_millis doc example to show underlying values.Corey Farwell-1/+4
2017-05-02Update Duration::from_secs doc example to show underlying values.Corey Farwell-1/+4
2017-05-03Auto merge of #41624 - RalfJung:mutexguard-sync, r=alexcrichtonbors-5/+3
MutexGuard<T> may be Sync only if T is Sync Fixes #41622 This is a breaking change. Does that imply any further process? I am not sure whether I wrote that "compilation must fail"-test correctly, but at least it is passing here with the patch applied. Same for the `since = "1.18.0"`, I just picked it because I had to pick something.
2017-05-01Fix incorrect hex value in doc comment example.Corey Farwell-1/+1
2017-05-01Add profiling support, through the rustc -Z profile flag.whitequark-0/+2
When -Z profile is passed, the GCDAProfiling LLVM pass is added to the pipeline, which uses debug information to instrument the IR. After compiling with -Z profile, the $(OUT_DIR)/$(CRATE_NAME).gcno file is created, containing initial profiling information. After running the program built, the $(OUT_DIR)/$(CRATE_NAME).gcda file is created, containing branch counters. The created *.gcno and *.gcda files can be processed using the "llvm-cov gcov" and "lcov" tools. The profiling data LLVM generates does not faithfully follow the GCC's format for *.gcno and *.gcda files, and so it will probably not work with other tools (such as gcov itself) that consume these files.
2017-04-29Update stage0 bootstrap compilerAlex Crichton-1/+0
We've got a freshly minted beta compiler, let's update to use that on nightly! This has a few other changes associated with it as well * A bump to the rustc version number (to 1.19.0) * Movement of the `cargo` and `rls` submodules to their "proper" location in `src/tools/{cargo,rls}`. Now that Cargo workspaces support the `exclude` option this can work. * Updates of the `cargo` and `rls` submodules to their master branches. * Tweak to the `src/stage0.txt` format to be more amenable for Cargo version numbers. On the beta channel Cargo will bootstrap from a different version than rustc (e.g. the version numbers are different), so we need different configuration for this. * Addition of `dev` as a readable key in the `src/stage0.txt` format. If present then stage0 compilers are downloaded from `dev-static.rust-lang.org` instead of `static.rust-lang.org`. This is added to accomodate our updated release process with Travis and AppVeyor.
2017-04-29need to pick a new feature nameRalf Jung-1/+1
2017-04-29MutexGuard<T> may be Sync only if T is SyncRalf Jung-5/+3
Also remove some unnecessary unsafe impl from the tests.
2017-04-27Rollup merge of #41526 - steveklabnik:gh35950, r=GuillaumeGomezCorey Farwell-9/+8
Clean up TcpStream example Fixes #35950
2017-04-27Rollup merge of #41438 - projektir:mpsc_docs, r=steveklabnikCorey Farwell-29/+254
Adding links and examples for various mspc pages #29377 Adding links and copying examples for the various Iterators; adding some extra stuff to `Sender`/`SyncSender`/`Receiver`.
2017-04-26Adding links and examples for various mspc pages #29377projektir-29/+254
2017-04-26Rollup merge of #41499 - steveklabnik:gh25164, r=alexcrichtonAriel Ben-Yehuda-0/+7
Address platform-specific behavior in TcpStream::shutdown Fixes #25164 r? @rust-lang/libs from the GitHub thread, it seems like documenting this behavior is okay, but I want to make sure that's what you want.
2017-04-26restructured docs for thread and added linksChristian Poveda-13/+19
2017-04-26Auto merge of #41352 - kennytm:macos-sanitizers, r=alexcrichtonbors-0/+4
Support AddressSanitizer and ThreadSanitizer on x86_64-apple-darwin [ASan](https://clang.llvm.org/docs/AddressSanitizer.html#supported-platforms) and [TSan](https://clang.llvm.org/docs/ThreadSanitizer.html#supported-platforms) are supported on macOS, and this commit enables their support. The sanitizers are always built as `*.dylib` on Apple platforms, so they cannot be statically linked into the corresponding `rustc_?san.rlib`. The dylibs are directly copied to `lib/rustlib/x86_64-apple-darwin/lib/` instead. Note, although Xcode also ships with their own copies of ASan/TSan dylibs, we cannot use them due to version mismatch. ---- ~~There is a caveat: the sanitizer libraries are linked as `@rpath/` (due to https://reviews.llvm.org/D6018), so the user needs to additionally pass `-C rpath`:~~ **Edit:** Passing rpath is now automatic.
2017-04-26Address platform-specific behavior in TcpStream::shutdownsteveklabnik-0/+7
Fixes #25164
2017-04-26Clean up TcpStream examplesteveklabnik-9/+8
Fixes #35950
2017-04-26added moveChristian Poveda-1/+1
2017-04-25Rollup merge of #41518 - tbu-:pr_fix_cp_error, r=sfacklerCorey Farwell-1/+1
Fix a copy-paste error in `Instant::sub_duration` Fixes #41514.
2017-04-25Rollup merge of #41463 - SergioBenitez:master, r=alexcrichtonCorey Farwell-0/+139
Add internal accessor methods to io::{Chain, Take}. Resolves #29067.
2017-04-25Rollup merge of #41442 - tbu-:pr_writeall_interrupted, r=aturonCorey Farwell-6/+16
Specify behavior of `write_all` for `ErrorKind::Interrupted` errors Also spell out that read and write operations should be retried on `ErrorKind::Interrupted` errors. Fixes #38494.
2017-04-25rewrote the thread struct docsChristian Poveda-7/+12
2017-04-25Support AddressSanitizer and ThreadSanitizer on x86_64-apple-darwin.kennytm-0/+4
ASan and TSan are supported on macOS, and this commit enables their support. The sanitizers are always built as *.dylib on Apple platforms, so they cannot be statically linked into the corresponding `rustc_?san.rlib`. The dylibs are directly copied to `lib/rustlib/x86_64-apple-darwin/lib/` instead. Note, although Xcode also ships with their own copies of ASan/TSan dylibs, we cannot use them due to version mismatch. There is a caveat: the sanitizer libraries are linked as @rpath, so the user needs to additionally pass `-C rpath`: rustc -Z sanitizer=address -C rpath file.rs ^~~~~~~~ Otherwise there will be a runtime error: dyld: Library not loaded: @rpath/libclang_rt.asan_osx_dynamic.dylib Referenced from: /path/to/executable Reason: image not found Abort trap: 6 The next commit includes a temporary change in compiler to force the linker to emit a usable @rpath.
2017-04-24Add cautions to io::get_mut method documentation.Sergio Benitez-0/+8
2017-04-24Reference tracking issue for more_io_inner_methods.Sergio Benitez-5/+5
2017-04-24Add internal accessor methods to io::{Chain, Take}.Sergio Benitez-0/+131
Resolves #29067.
2017-04-25Fix a copy-paste error in `Instant::sub_duration`Tobias Bucher-1/+1
Fixes #41514.
2017-04-23Auto merge of #41437 - cuviper:remove-unstable-deprecated, r=alexcrichtonbors-397/+1
Remove items that are unstable and deprecated This removes unstable items that have been deprecated for more than one cycle. - Since 1.16.0, `#![feature(enumset)]` - All of `mod collections::enum_set` - Since 1.15.0, `#![feature(borrow_state)]` - `cell::BorrowState` - `RefCell::borrow_state()` - Since 1.15.0, `#![feature(is_unique)]` - `Rc::is_unique()` (made private like `Arc::is_unique()`) - Since 1.15.0, `#![feature(rc_would_unwrap)]` - `Rc::would_wrap()` - Since 1.13.0, `#![feature(binary_heap_extras)]` - `BinaryHeap::push_pop()` - `BinaryHeap::replace()` - Since 1.12.0, `#![feature(as_unsafe_cell)]` - `Cell::as_unsafe_cell()` - `RefCell::as_unsafe_cell()` - Since 1.12.0, `#![feature(map_entry_recover_keys)]` - `btree_map::OccupiedEntry::remove_pair()` - `hash_map::OccupiedEntry::remove_pair()` - Since 1.11.0, `#![feature(float_extras)]` - `Float::nan()` - `Float::infinity()` - `Float::neg_infinity()` - `Float::neg_zero()` - `Float::zero()` - `Float::one()` - `Float::integer_decode()` - `f32::integer_decode()` - `f32::ldexp()` - `f32::frexp()` - `f32::next_after()` - `f64::integer_decode()` - `f64::ldexp()` - `f64::frexp()` - `f64::next_after()` - Since 1.11.0, `#![feature(zero_one)]` - `num::Zero` - `num::One`
2017-04-22Remove unused import.Corey Farwell-1/+1
2017-04-22Fix invalid linkageGuillaume Gomez-4/+4
2017-04-21Rollup merge of #41426 - malbarbo:android-x86_64, r=alexcrichtonCorey Farwell-0/+63
Add x86_64-linux-android target
2017-04-21Rollup merge of #41376 - mbrubeck:docs, r=frewsxcvCorey Farwell-2/+15
Expanded docs and examples for PathBuf::file_name and friends This addresses some common surprises when `PathBuf::set_file_name` is called on the path of a directory rather than a file. r? @steveklabnik
2017-04-21Specify behavior of `write_all` for `ErrorKind::Interrupted` errorsTobias Bucher-6/+16
Also spell out that read and write operations should be retried on `ErrorKind::Interrupted` errors. Fixes #38494.
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