Changes in allocator.rs

073aedab - Enable the `unsafe-op-in-unsafe-fn` lint (#10559)

Wed, 09 Apr 2025 21:06:59 +0000

Enable the `unsafe-op-in-unsafe-fn` lint (#10559)* Enable the `unsafe-op-in-unsafe-fn` lintThis commit enables the `unsafe-op-in-unsafe-fn` lint in rustc for theentire workspace. This lint will be warn-by-default in the 2024 editionso this is intended to smooth the future migration to the new edition.Many `unsafe` blocks were added in places the lint warned about, withtwo major exceptions. The `wasmtime` and `wasmtime-c-api` crates simplyexpect this lint to fire and effectively disable the lint. They're toobig at this time to do through this PR. My hope is that one day in thefuture they'll be migrated, but more realistically that probably won'thappen so these crates just won't benefit from this lint.* Fix nostd fiber buildprtest:full* Fix build on Windows* Fix asan build List of files: /wasmtime-44.0.1/examples/min-platform/embedding/src/allocator.rs

b9b0ba49 - add wasmtime-wasi-io and custom async executor to min-platform example (#10128)

Tue, 28 Jan 2025 19:35:07 +0000

add wasmtime-wasi-io and custom async executor to min-platform example (#10128)* add wasmtime-wasi-io and custom async executor to min-platform example* make it possible to find example from wasmtime-wasi-io docsprtest:full* fix comment* add wasm32-wasip2 target for min-platform ciand enable signals based traps when running with wasi disabled,because at the moment without signals based traps no native code can beloaded so the embedding never actually executes wasm. this ensures theheap size setting when not(feature = "wasi") is checked by execution* fix cbindgen version in ci List of files: /wasmtime-44.0.1/examples/min-platform/embedding/src/allocator.rs

80f44cbb - Use `&raw` from Rust 1.82 (#9960)

Thu, 09 Jan 2025 17:07:38 +0000

Use `&raw` from Rust 1.82 (#9960)This commit leverages #9956 to use the `&raw` syntax for creating rawpointers instead of using the `ptr::addr_of!` macro. List of files: /wasmtime-44.0.1/examples/min-platform/embedding/src/allocator.rs

1f958b6b - Update MSRV to 1.81.0 (#9692)

Sat, 30 Nov 2024 16:49:05 +0000

Update MSRV to 1.81.0 (#9692)* Update MSRV to 1.81.0Coupled with today's release of Rust 1.83 this bumps our MSRV onWasmtime to 1.81. This also updates the nightly used for testing too.prtest:full* Propagate some necessary features through Winch* Remove std feature from adapter configurationLooks to be historical at this point and is no longer needed List of files: /wasmtime-44.0.1/examples/min-platform/embedding/src/allocator.rs

d3132c9d - Add a `signals-based-traps` Cargo compile-time feature (#9614)

Tue, 19 Nov 2024 19:21:36 +0000

Add a `signals-based-traps` Cargo compile-time feature (#9614)* Gate signal handlers behind a new Cargo featureThis commit adds a new on-by-default Cargo feature to the `wasmtime`crate named `signals-based-traps`. This is modeled after the`Config::signals_based_traps` configuration at runtime and can be usedto statically disable the use of signal handlers in Wasmtime. Thisnotably reduces the number of platform dependencies that Wasmtime hasand provides a mode of avoiding relying on signals altogether.This introduces a new `MallocMemory` which is a linear memory backed bythe system allocator. This new type of memory is enabled when virtualmemory guards are disabled and signals-based-traps are disabled. Thismeans that this new type of memory will be candidate for fuzzing forexample.prtest:full* Fix rebase conflict* Refactor `MmapVec` documentation and representation* Remove no-longer-needed `Arc`* Document it may be backed by `Vec` List of files: /wasmtime-44.0.1/examples/min-platform/embedding/src/allocator.rs

5054d400 - Update documentation and example for no_std (#8555)

Mon, 06 May 2024 19:23:40 +0000

Update documentation and example for no_std (#8555)* Update Wasmtime's tier stability documentationMove some items between tiers and add a few misc items here and there.* Update platform support documentationRe-word lots of this since it was originally written, link to the tiersof support page, and rewrite the section on `no_std`.* Update the `min-platform` example with no_stdThis commit updates the preexisting `min-platform` example to no longerrequire Nightly Rust and instead use the `no_std` support now added toWasmtime. This involved:* Change the build process to produce a staticlib which is then manually converted via `cc` into a shared library for the native Linux platform.* Compile the modules outside of the embedding and only `deserialize` within the embedding.* Update the `indexmap` dependency to pick up a bug fix required in `no_std` mode (apparently, it fails on indexmap@2.0.0 and passes at 2.2.6, I didn't dig much further).This commit additionally makes the `wasmtime-platform.h` header filegenerated by the example a release artifact for Wasmtime itself. Theheader itself is touched up a bit by configuring some more `cbindgen`options as well.* Fix clippy buildprtest:full* Review comments* Pass gc-sections to linking the library List of files: /wasmtime-44.0.1/examples/min-platform/embedding/src/allocator.rs

72004aad - Turn the `wasmtime-runtime` crate into the `wasmtime::runtime::vm` module (#8501)

Tue, 30 Apr 2024 18:52:45 +0000

Turn the `wasmtime-runtime` crate into the `wasmtime::runtime::vm` module (#8501)* Expose `wasmtime-runtime` as `crate::runtime::vm` internally for the `wasmtime` crate* Rewrite uses of `wasmtime_runtime` to `crate::runtime::vm`* Remove dep on `wasmtime-runtime` from `wasmtime-cli`* Move the `wasmtime-runtime` crate into the `wasmtime::runtime::vm` module* Update labeler for merged crates* Fix `publish verify`prtest:full List of files: /wasmtime-44.0.1/examples/min-platform/embedding/src/allocator.rs

b81bb7a3 - Add a "custom" platform configuration for Wasmtime (#7995)

Wed, 28 Feb 2024 20:23:33 +0000

Add a "custom" platform configuration for Wasmtime (#7995)* Add a "custom" platform configuration for WasmtimeThis commit leverages adds a new "platform" to Wasmtime to be supportedin the `crates/runtime/src/sys` folder. This joins preexisting platformssuch as Unix and Windows. The goal of this platform is to be an opt-inway to build Wasmtime for targets that don't have a predefined way torun.The new "custom" platform requires `--cfg wasmtime_custom_platform` tobe passed to the Rust compiler, for example by using `RUSTFLAGS`. Thisnew platform bottoms out in a C API that is intended to be small andLinux-like. The C API is effectively the interface to virtual memorythat Wasmtime requires. This C API is also available as a header file at`examples/min-platform/embedding/wasmtime-platform.h` (generated by`cbindgen`).The main purpose of this is to make it easier to experiment with portingWasmtime to new platforms. By decoupling a platform implementation fromWasmtime itself it should be possible to run these experimentsout-of-tree. An example of this I've been working on is gettingWasmtime running on bare-metal with a custom kernel. This supportenables defining the platform interface of the custom kernel's syscallsoutside of Wasmtime.* Exclude wasmtime-platform.h from formatting* Include build-wasmtime-target-wasm32 in final job* Don't force any single toolchain* Add notes to no_std docs* Add rust-src to CI* Review comments* Change APIs to be fallible* Only compile the min-platform example on Linux* Fix compile of min-platform example* Fix another compile error in the example List of files: /wasmtime-44.0.1/examples/min-platform/embedding/src/allocator.rs