pezkuwichain/pezkuwi-subxt
1
0
Fork 0
mirror of https://github.com/pezkuwichain/pezkuwi-subxt.git synced 2026-04-26 14:37:57 +00:00
Code Issues Packages Projects Releases Wiki Activity

Rewrap all comments to 100 line width (#9490)

Browse Source 
* reformat everything again

* manual formatting

* last manual fix

* Fix build
This commit is contained in:
Kian Paimani
2021-08-11 16:56:55 +02:00
committed by GitHub
parent 8180c58700
commit abd08e29ce
258 changed files with 1776 additions and 1447 deletions
Download Patch File Download Diff File Expand all files Collapse all files
substrate/client/executor/common/src/runtime_blob/mod.rs
+8 -7
View File
@@ -26,27 +26,28 @@
//!
//! To give you some examples:
//!
//! - wasmi allows reaching to non-exported mutable globals so that we could reset them.
//! Wasmtime doesn’t support that.
//! - wasmi allows reaching to non-exported mutable globals so that we could reset them. Wasmtime
//! doesn’t support that.
//!
//! We need to reset the globals because when we
//! execute the Substrate Runtime, we do not drop and create the instance anew, instead
//! we restore some selected parts of the state.
//!
//! - stack depth metering can be performed via instrumentation or deferred to the engine and say
//! be added directly in machine code. Implementing this in machine code is rather cumbersome so
//! - stack depth metering can be performed via instrumentation or deferred to the engine and say be
//! added directly in machine code. Implementing this in machine code is rather cumbersome so
//! instrumentation looks like a good solution.
//!
//! Stack depth metering is needed to make a wasm blob
//! execution deterministic, which in turn is needed by the Parachain Validation Function in Polkadot.
//! execution deterministic, which in turn is needed by the Parachain Validation Function in
//! Polkadot.
//!
//! ## Inspection
//!
//! Inspection of a wasm module may be needed to extract some useful information, such as to extract
//! data segment snapshot, which is helpful for quickly restoring the initial state of instances.
//! Inspection can be also useful to prove that a wasm module possesses some properties, such as,
//! is free of any floating point operations, which is a useful step towards making instances produced
//! from such a module deterministic.
//! is free of any floating point operations, which is a useful step towards making instances
//! produced from such a module deterministic.
mod data_segments_snapshot;
mod globals_snapshot;
substrate/client/executor/common/src/runtime_blob/runtime_blob.rs
+6 -3
View File
@@ -72,11 +72,13 @@ impl RuntimeBlob {
export_mutable_globals(&mut self.raw_module, "exported_internal_global");
}
/// Run a pass that instrument this module so as to introduce a deterministic stack height limit.
/// Run a pass that instrument this module so as to introduce a deterministic stack height
/// limit.
///
/// It will introduce a global mutable counter. The instrumentation will increase the counter
/// according to the "cost" of the callee. If the cost exceeds the `stack_depth_limit` constant,
/// the instrumentation will trap. The counter will be decreased as soon as the the callee returns.
/// the instrumentation will trap. The counter will be decreased as soon as the the callee
/// returns.
///
/// The stack cost of a function is computed based on how much locals there are and the maximum
/// depth of the wasm operand stack.
@@ -89,7 +91,8 @@ impl RuntimeBlob {
Ok(Self { raw_module: injected_module })
}
/// Perform an instrumentation that makes sure that a specific function `entry_point` is exported
/// Perform an instrumentation that makes sure that a specific function `entry_point` is
/// exported
pub fn entry_point_exists(&self, entry_point: &str) -> bool {
self.raw_module
.export_section()