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Add an instance limit to Config (#2593)

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* Add an instance limit to `Config`

This commit adds a new parameter to `Config` which limits the number of
instances that can be created within a store connected to that `Config`.
The intention here is to provide a default safeguard against
module-linking modules that recursively create too many instances.

* Update crates/c-api/include/wasmtime.h

Co-authored-by: Peter Huene <peter@huene.dev>

Co-authored-by: Peter Huene <peter@huene.dev>
This commit is contained in:
Alex Crichton
2021-01-21 11:59:30 -06:00
committed by GitHub
parent 2d5037d84c
commit 8748cf5bd3
6 changed files with 75 additions and 1 deletions
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8
crates/c-api/include/wasmtime.h
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@@ -274,6 +274,14 @@ WASMTIME_CONFIG_PROP(void, static_memory_guard_size, uint64_t)
*/
WASMTIME_CONFIG_PROP(void, dynamic_memory_guard_size, uint64_t)
/**
* \brief Configures the maximum number of instances that can be created.
*
* For more information see the Rust documentation at
* https://bytecodealliance.github.io/wasmtime/api/wasmtime/struct.Config.html#method.max_instances.
*/
WASMTIME_CONFIG_PROP(void, max_instances, size_t)
/**
* \brief Enables Wasmtime's cache and loads configuration from the specified
* path.