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executor: Migrate wasmtime backend to a high-level API (#4686)

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* Migrate wasmtime backend to wasmtime-api

* Port to a newer version of wasmtime

* Update to the latest changes.

* Rejig the sandbox module a bit

* Materialze

* Fixes.

* executor wasm_runtime fix

* Refactor everything

* More refactoring

* Even more refactorings

* More cleaning.

* Update to the latest wasmtime

* Reformat

* Renames

* Refactoring and comments.

* Docs

* Rename FunctionExecutor to host.

* Imrpove docs.

* fmt

* Remove panic

* Assert the number of arguments are equal between wasmtime and hostfunc.

* Comment a possible panic if there is no corresponding value variant.

* Check signature of the entrypoint.

* Use git version of wasmtime

* Refine and doc the sandbox code.

* Comment RefCells.

* Update wasmtime to the latest-ish master.

This may solve a problem with segfaults.

* Apply suggestions from code review

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* Use full SHA1 hash of wasmtime commit.

* Add a panic message.

* Add some documentation

* Update wasmtime version to include SIGSEGV fix

* Update to crates.io version of wasmtime

* Make it work.

* Move the creation of memory into `InstanceWrapper::new`

* Make `InstanceWrapper` !Send & !Sync

* Avoid using `take_mut`

* Update client/executor/wasmtime/Cargo.toml

Co-Authored-By: Bastian Köcher <bkchr@users.noreply.github.com>

* Limit maximum size of memory.

* Rename `init_state` to `with_initialized_state`

Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
This commit is contained in:
Sergei Pepyakin
2020-02-13 14:54:19 +01:00
committed by GitHub
parent c871eaacbc
commit 49af986ad4
15 changed files with 1220 additions and 1376 deletions
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substrate/client/executor/common/src/wasm_runtime.rs
-6
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@@ -23,12 +23,6 @@ use sp_wasm_interface::Function;
///
/// This can be implemented by an execution engine.
pub trait WasmRuntime {
/// Attempt to update the number of heap pages available during execution.
///
/// Returns false if the update cannot be applied. The function is guaranteed to return true if
/// the heap pages would not change from its current value.
fn update_heap_pages(&mut self, heap_pages: u64) -> bool;
/// Return the host functions that are registered for this Wasm runtime.
fn host_functions(&self) -> &[&'static dyn Function];