T0b1/wasmtime
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
Files
fb0dc1045fa1332a5480c52970ddcdf2a5848543
wasmtime/RELEASES.md
Alex Crichton fb0dc1045f Update release notes for next version (#2721) 
Add some notes for major features which have landed
2021-03-11 16:06:41 -06:00

22 KiB
Raw Blame History

Wasmtime Releases

0.25.0

Not yet released

Added

  • An implementation of a pooling instance allocator, optionally backed by userfaultfd on Linux, was added to improve the performance of embeddings that instantiate a large number of instances continuously. #2518

  • Host functions can now be defined on Config to share the function across all Store objects connected to an Engine. This can improve the time it takes to instantiate instances in a short-lived Store. #2625

  • The Store object now supports having typed values attached to it which can be retrieved from host functions. #2625

  • The wiggle code generator now supports async host functions. #2701

Changed

  • The Func::getN{,_async} APIs have all been removed in favor of a new Func::typed API which should be more compact in terms of API surface area as well as more flexible in how it can be used. #2719

Fixed

  • Interepretation of timestamps in poll_oneoff for WASI have been fixed to correctly use nanoseconds instead of microseconds. #2717

0.24.0

Released 2021-03-04.

Added

  • Implement support for async functions in Wasmtime #2434

Fixed

  • Fix preservation of the sigaltstack on macOS #2676
  • Fix incorrect semver dependencies involving fs-set-times. #2705
  • Fix some i128 shift-related bugs in x64 backend. #2682
  • Fix incomplete trap metadata due to multiple traps at one address #2685

0.23.0

Released 2021-02-16.

Added

  • Support for limiting WebAssembly execution with fuel was added, including support in the C API. #2611 #2643
  • Wasmtime now has more knobs for limiting memory and table allocations #2617
  • Added a method to share Config across machines #2608
  • Added a safe memory read/write API #2528
  • Added support for the experimental wasi-crypto APIs #2597
  • Added an instance limit to Config #2593
  • Implemented module-linking's outer module aliases #2590
  • Cranelift now supports 128-bit operations for the new x64 backend. #2539
  • Cranelift now has detailed debug-info (DWARF) support in new backends (initially x64). #2565
  • Cranelift now uses the POPCNT, TZCNT, and LZCNT, as well as SSE 4.1 rounding instructions on x64 when available.
  • Cranelift now uses the CNT, instruction on aarch64 when available.

Changed

  • A new WASI implementation built on the new cap-std crate was added, replacing the previous implementation. This brings improved robustness, portability, and performance.

  • wasmtime_wasi::WasiCtxBuilder moved to wasi_cap_std_sync::WasiCtxBuilder.

  • The WebAssembly C API is updated, with a few minor API changes #2579

Fixed

  • Fixed a panic in WASI fd_readdir on large directories #2620
  • Fixed a memory leak with command modules #2017

0.22.0

Released 2021-01-07.

Added

Changed

Fixed

  • Fixed an issue where the select instruction didn't accept v128 SIMD operands. #2391

  • Fixed an issue where Wasmtime could potentially use the wrong stack map during GCs, leading to a panic. #2396

  • Fixed an issue where if a host-defined function erroneously returned a value from a different store, that value would be leaked. #2424

  • Fixed a bug where in certain cases if a module's instantiation failed, it could leave trampolines in the store that referenced the no-longer-valid instance. These trampolines could be reused in future instantiations, leading to use after free bugs. #2408

  • Fixed a miscompilation on aarch64 where certain instructions would read SP instead of the zero register. This could only affect you if you explicitly enabled the Wasm SIMD proposal. #2548

0.21.0

Released 2020-11-05.

Added

  • Experimental support for the multi-memory proposal was added. #2263

  • The Trap::trap_code API enables learning what kind of trap was raised. #2309

Changed

  • WebAssembly module validation is now parallelized. #2059

  • Documentation is now available at docs.wasmtime.dev. #2317

  • Windows now compiles like other platforms with a huge guard page instead of having its own custom limit which made modules compile and run more slowly. #2326

  • The size of the cache entry for serialized modules has been greatly reduced. #2321 #2322 #2324 #2325

  • The FuncType API constructor and accessors are now iterator-based. #2365

Fixed

  • A panic in compiling reference-types-using modules has been fixed. #2350

0.20.0

Released 2020-09-23.

Added

  • Support for explicitly serializing and deserializing compiled wasm modules has been added. #2020

  • A wasmtime_store_gc C API was added to run GC for externref. #2052

  • Support for atomics in Cranelift has been added. Support is not fully implemented in Wasmtime at this time, however. #2077

  • The Caller::get_export function is now implemented for Func references as well. #2108

Fixed

  • Leaks in the C API have been fixed. #2040

  • The wasm_val_copy C API has been fixed for reference types. #2041

  • Fix a panic with Func::new and reference types when the store doesn't have reference types enabled. #2039

0.19.0

Released 2020-07-14.

Added

Fixed

  • Runtime warnings when using Wasmtime on musl have been fixed. #1914

  • A bug affecting Windows unwind information with functions that have spilled floating point registers has been fixed. #1983

Changed

  • Wasmtime's default branch and development now happens on the main branch instead of master. #1924

Removed

  • The "host info" support in the C API has been removed since it was never fully or correctly implemented. #1922

  • Support for the *_same functions in the C API has been removed in the same vein as the host info APIs. #1926

0.18.0

Release 2020-06-09.

Added

The WasmTy trait is now implemented for u32 and u64.

#1808

0.17.0

Released 2020-06-01.

Added

  • The Commands and Reactors ABI is now supported in the Rust API. Linker::module loads a module and automatically handles Commands and Reactors semantics.

    #1565

The Table::grow function now returns the previous table size, making it consistent with the table.grow instruction.

#1653

New Wasmtime-specific C APIs for working with tables were added which provide more detailed error information and which make growing a table more consistent with the table.grow instruction as well.

#1654

The C API now includes support for enabling logging in Wasmtime.

#1737

Changed

The WASI proc_exit function no longer exits the host process. It now unwinds the callstack back to the wasm entrypoint, and the exit value is available from the Trap::i32_exit_status method.

#1646

The WebAssembly multi-value proposal is now enabled by default.

#1667

The Rust API does not require a store provided during Module::new operation. The Module can be send accross threads and instantiate for a specific store. The Instance::new now requires the store.

#1761

0.16.0

Released 2020-04-29.

Added

  • The Instance struct has new accessors, get_func, get_table, get_memory, and get_global for quickly looking up exported functions, tables, memories, and globals by name. #1524

  • The C API has a number of new wasmtime_* functions which return error objects to get detailed error information when an API fails. #1467

  • Users now have fine-grained control over creation of instances of Memory with a new MemoryCreator trait. #1400

  • Go bindings for Wasmtime are now available. #1481

  • APIs for looking up values in a Linker have been added. #1480

  • Preliminary support for AArch64, also known as ARM64. #1581

Changed

  • Instance::exports now returns Export objects which contain the names of the exports in addition to their Extern definitions, so it's no longer necessary to use Module::exports to obtain the export names. #1524

  • The Func::call API has changed its error type from Trap to anyhow::Error to distinguish between wasm traps and runtime violations (like the wrong number of parameters). #1467

  • A number of wasmtime_linker_* and wasmtime_config_* C APIs have new type signatures which reflect returning errors. #1467

  • Bindings for .NET have moved to https://github.com/bytecodealliance/wasmtime-dotnet. #1477

  • Passing too many imports to Instance::new is now considered an error. #1478

Fixed

  • Spurious segfaults due to out-of-stack conditions when handling signals have been fixed. #1315

0.15.0

Released 2020-03-31.

Fixed

Full release produced for all artifacts to account for hiccups in 0.13.0 and 0.14.0.

0.14.0

This version ended up not getting a full release

Fixed

Fix build errors in wasi-common on Windows.

0.13.0

Released 2020-03-24.

Added

  • Lots of documentation of wasmtime has been updated. Be sure to check out the book and API documentation!

  • All wasmtime example programs are now in a top-level examples directory and are available in both C and Rust. #1286

  • A wasmtime::Linker type was added to conveniently link link wasm modules together and create instances that reference one another. #1384

  • Wasmtime now has "jitdump" support enabled by default which allows profiling wasm code on linux. #1310

  • The wasmtime::Caller type now exists as a first-class way to access the caller's exports, namely memory, when implementing host APIs. This can be the first argument of functions defined with Func::new or Func::wrap which allows easily implementing methods which take a pointer into wasm memory. Note that this only works for accessing the caller's Memory for now and it must be exported. This will eventually be replaced with a more general-purpose mechanism like interface types. #1290

  • The bulk memory proposal has been fully implemented. #1264 #976

  • Virtual file support has been added to wasi-common. #701

  • The C API has been enhanced with a Wasmtime-specific wasmtime_wat2wasm to parse *.wat files via the C API. #1206

Changed

  • The wast and wasm2obj standalone binaries have been removed. They're available via the wasmtime wast and wasmtime wasm2obj subcommands. #1372

  • The wasi-common crate now uses the new wiggle crate to auto-generate a trait which is implemented for the current wasi snapshot. #1202

  • Wasmtime no longer has a dependency on a C++ compiler. #1365

  • The Func::wrapN APIs have been consolidated into one Func::wrap API. #1363

  • The Callable trait has been removed and now Func::new takes a closure directly. #1363

  • The Cranelift repository has been merged into the Wasmtime repository.

  • Support for interface types has been temporarily removed. #1292

  • The exit code of the wasmtime CLI has changed if the program traps. #1274

  • The wasmtime CLI now logs to stderr by default and the -d flag has been renamed to --log-to-file. #1266

  • Values cannot cross Store objects, meaning you can't instantiate a module with values from different stores nor pass values from different stores into methods. #1016

0.12.0

Released 2020-02-26.

Added

  • Support for the WebAssembly text annotations proposal has been added. #998

  • An initial C API for instantiating WASI modules has been added. #977

  • A new suite of Func::getN functions have been added to the wasmtime API to call statically-known function signatures in a highly optimized fashion. #955

  • Initial support for profiling JIT code through perf jitdump has been added. #360

  • More CLI flags corresponding to proposed WebAssembly features have been added. #917

Changed

  • The wasmtime CLI as well as embedding API will optimize WebAssembly code by default now. #973 #988

  • The verifier pass in Cranelift is now no longer run by default when using the embedding API. #882

Fixed

  • Code caching now accurately accounts for optimization levels, ensuring that if you ask for optimized code you're not accidentally handed unoptimized code from the cache. #974

  • Automated releases for tags should be up and running again, along with automatic publication of the wasmtime Python package. #971