5dc3c19417
Simplify `jemalloc` setup In the past, `#[used]` had to appear in the top-level crate to have a consistent effect on the linker. This has been fixed a while ago for ELF with the introduction of the `symbols.o` file in https://github.com/rust-lang/rust/pull/95604, and more recently for Mach-O in https://github.com/rust-lang/rust/pull/133832, which means that libraries can now implement the required workarounds themselves. This allows moving these `#[used]` declarations out of our `main.rs`. Specifically, I have moved them into `tikv-jemalloc-sys` where they belong in https://github.com/tikv/jemallocator/pull/109 and done the same for `mimalloc` in https://github.com/purpleprotocol/mimalloc_rust/pull/146 (in case we want to experiment with switching to that one day). Test with: ```sh ./x build library src/tools/rustdoc src/tools/clippy --set rust.jemalloc=true # macOS lldb -- ./build/host/stage1/bin/rustc -vV (lldb) b _rjem_je_zone_register (lldb) run # Should breakpoint, this means that the allocator was properly linked # Linux lldb -- ./build/host/stage1/bin/rustc -vV (lldb) b malloc (lldb) run # Should breakpoint, inspect that the `malloc` symbol comes from the `rustc` binary and not from `libc` ``` try-job: `aarch64-gnu` try-job: `dist-aarch64-linux` try-job: `dist-x86_64-musl` try-job: `dist-x86_64-apple` try-job: `dist-aarch64-apple` |
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| compiler | ||
| library | ||
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| .clang-format | ||
| .editorconfig | ||
| .git-blame-ignore-revs | ||
| .gitattributes | ||
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| .ignore | ||
| .mailmap | ||
| bootstrap.example.toml | ||
| Cargo.lock | ||
| Cargo.toml | ||
| CODE_OF_CONDUCT.md | ||
| configure | ||
| CONTRIBUTING.md | ||
| COPYRIGHT | ||
| INSTALL.md | ||
| LICENSE-APACHE | ||
| license-metadata.json | ||
| LICENSE-MIT | ||
| package-lock.json | ||
| package.json | ||
| README.md | ||
| RELEASES.md | ||
| REUSE.toml | ||
| rust-bors.toml | ||
| rustfmt.toml | ||
| triagebot.toml | ||
| typos.toml | ||
| x | ||
| x.ps1 | ||
| x.py | ||
This is the main source code repository for Rust. It contains the compiler, standard library, and documentation.
Why Rust?
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Performance: Fast and memory-efficient, suitable for critical services, embedded devices, and easily integrated with other languages.
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Reliability: Our rich type system and ownership model ensure memory and thread safety, reducing bugs at compile-time.
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Productivity: Comprehensive documentation, a compiler committed to providing great diagnostics, and advanced tooling including package manager and build tool (Cargo), auto-formatter (rustfmt), linter (Clippy) and editor support (rust-analyzer).
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Read "Installation" from The Book.
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Contributing
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See LICENSE-APACHE, LICENSE-MIT, and COPYRIGHT for details.
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