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Make parachain validation wasm executor functional (#1574)

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* Make parachain validation wasm executor functional

- Increase the size of the validation result in the shared memory. The
validation result holds the new runtime when a runtime upgrade is
scheduled. So, we need to give it enough memory to send the data between
the validator and the wasm execution host.
- Add the `CallInWasmExt`. This is required when doing a runtime upgrade
to check that we upgrade to something meaningful.

* Update parachain/src/wasm_executor/mod.rs

* Update parachain/src/wasm_executor/mod.rs

Co-authored-by: Nikolay Volf <nikvolf@gmail.com>

Co-authored-by: Nikolay Volf <nikvolf@gmail.com>
This commit is contained in:
Bastian Köcher
2020-08-14 00:03:50 +02:00
committed by GitHub
parent 3a7d9753f6
commit 950bcece16
2 changed files with 23 additions and 11 deletions
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polkadot/parachain/src/wasm_executor/mod.rs
+8 -5
View File
@@ -35,6 +35,7 @@ mod validation_host;
// maximum memory in bytes
const MAX_RUNTIME_MEM: usize = 1024 * 1024 * 1024; // 1 GiB
const MAX_CODE_MEM: usize = 16 * 1024 * 1024; // 16 MiB
const MAX_VALIDATION_RESULT_HEADER_MEM: usize = MAX_CODE_MEM + 1024; // 16.001 MiB
/// A stub validation-pool defined when compiling for Android or WASM.
#[cfg(any(target_os = "android", target_os = "unknown"))]
@@ -176,11 +177,6 @@ pub fn validate_candidate_internal(
encoded_call_data: &[u8],
spawner: impl SpawnNamed + 'static,
) -> Result<ValidationResult, ValidationError> {
let mut extensions = Extensions::new();
extensions.register(sp_core::traits::TaskExecutorExt::new(spawner));
let mut ext = ValidationExternalities(extensions);
let executor = sc_executor::WasmExecutor::new(
sc_executor::WasmExecutionMethod::Interpreted,
// TODO: Make sure we don't use more than 1GB: https://github.com/paritytech/polkadot/issues/699
@@ -188,6 +184,13 @@ pub fn validate_candidate_internal(
HostFunctions::host_functions(),
8
);
let mut extensions = Extensions::new();
extensions.register(sp_core::traits::TaskExecutorExt::new(spawner));
extensions.register(sp_core::traits::CallInWasmExt::new(executor.clone()));
let mut ext = ValidationExternalities(extensions);
let res = executor.call_in_wasm(
validation_code,
None,