* Update WebAssembly C API submodule to latest commit.
This commit updates the WebAssembly C API submodule (for `wasm.h`) to the
latest commit out of master.
This fixes the behavior of `wasm_name_new_from_string` such that it no longer
copies the null character into the name, which caused unexpected failures when
using the Wasmtime linker as imports wouldn't resolve when the null was
present.
Along with this change were breaking changes to `wasm_func_call`, the host
callback signatures, and `wasm_instance_new` to take a vector type instead of a
pointer to an unsized array.
As a result, Wasmtime language bindings based on the C API will need to be
updated once this change is pulled in.
Fixes#2211.
Fixes#2131.
* Update Doxygen comments for wasm.h changes.
* Moves CodeMemory, VMInterrupts and SignatureRegistry from Compiler
* CompiledModule holds CodeMemory and GdbJitImageRegistration
* Store keeps track of its JIT code
* Makes "jit_int.rs" stuff Send+Sync
* Adds the threads example.
* Compute instance exports on demand.
Instead having instances eagerly compute a Vec of Externs, and bumping
the refcount for each Extern, compute Externs on demand.
This also enables `Instance::get_export` to avoid doing a linear search.
This also means that the closure returned by `get0` and friends now
holds an `InstanceHandle` to dynamically hold the instance live rather
than being scoped to a lifetime.
* Compute module imports and exports on demand too.
And compute Extern::ty on demand too.
* Add a utility function for computing an ExternType.
* Add a utility function for looking up a function's signature.
* Add a utility function for computing the ValType of a Global.
* Rename wasmtime_environ::Export to EntityIndex.
This helps differentiate it from other Export types in the tree, and
describes what it is.
* Fix a typo in a comment.
* Simplify module imports and exports.
* Make `Instance::exports` return the export names.
This significantly simplifies the public API, as it's relatively common
to need the names, and this avoids the need to do a zip with
`Module::exports`.
This also changes `ImportType` and `ExportType` to have public members
instead of private members and accessors, as I find that simplifies the
usage particularly in cases where there are temporary instances.
* Remove `Instance::module`.
This doesn't quite remove `Instance`'s `module` member, it gets a step
closer.
* Use a InstanceHandle utility function.
* Don't consume self in the `Func::get*` methods.
Instead, just create a closure containing the instance handle and the
export for them to call.
* Use `ExactSizeIterator` to avoid needing separate `num_*` methods.
* Rename `Extern::func()` etc. to `into_func()` etc.
* Revise examples to avoid using `nth`.
* Add convenience methods to instance for getting specific extern types.
* Use the convenience functions in more tests and examples.
* Avoid cloning strings for `ImportType` and `ExportType`.
* Remove more obviated clone() calls.
* Simplify `Func`'s closure state.
* Make wasmtime::Export's fields private.
This makes them more consistent with ExportType.
* Fix compilation error.
* Make a lifetime parameter explicit, and use better lifetime names.
Instead of 'me, use 'instance and 'module to make it clear what the
lifetime is.
* More lifetime cleanups.
* Add Wasmtime-specific C API functions to return errors
This commit adds new `wasmtime_*` symbols to the C API, many of which
mirror the existing counterparts in the `wasm.h` header. These APIs are
enhanced in a number of respects:
* Detailed error information is now available through a
`wasmtime_error_t`. Currently this only exposes one function which is
to extract a string version of the error.
* There is a distinction now between traps and errors during
instantiation and function calling. Traps only happen if wasm traps,
and errors can happen for things like runtime type errors when
interacting with the API.
* APIs have improved safety with respect to embedders where the lengths
of arrays are now taken as explicit parameters rather than assumed
from other parameters.
* Handle trap updates
* Update C examples
* Fix memory.c compile on MSVC
* Update test assertions
* Refactor C slightly
* Bare-bones .NET update
* Remove bogus nul handling
* Move all examples to a top-level directory
This commit moves all API examples (Rust and C) to a top-level
`examples` directory. This is intended to make it more discoverable and
conventional as to where examples are located. Additionally all examples
are now available in both Rust and C to see how to execute the example
in the language you're familiar with. The intention is that as more
languages are supported we'd add more languages as examples here too.
Each example is also accompanied by either a `*.wat` file which is
parsed as input, or a Rust project in a `wasm` folder which is compiled
as input.
A simple driver crate was also added to `crates/misc` which executes all
the examples on CI, ensuring the C and Rust examples all execute
successfully.
