a8ee0554a9
This is enough to get an `externref -> externref` identity function passing. However, `externref`s that are dropped by compiled Wasm code are (safely) leaked. Follow up work will leverage cranelift's stack maps to resolve this issue.
36 lines
1.1 KiB
Rust
36 lines
1.1 KiB
Rust
use crate::wasm_config_t;
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use wasmtime::Engine;
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#[repr(C)]
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#[derive(Clone)]
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pub struct wasm_engine_t {
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pub(crate) engine: Engine,
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}
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wasmtime_c_api_macros::declare_own!(wasm_engine_t);
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#[no_mangle]
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pub extern "C" fn wasm_engine_new() -> Box<wasm_engine_t> {
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// Enable the `env_logger` crate since this is as good a place as any to
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// support some "top level initialization" for the C API. Almost all support
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// should go through this one way or another, so this ensures that
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// `RUST_LOG` should work reasonably well.
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//
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// Note that we `drop` the result here since this fails after the first
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// initialization attempt. We don't mind that though because this function
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// can be called multiple times, so we just ignore the result.
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drop(env_logger::try_init());
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Box::new(wasm_engine_t {
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engine: Engine::default(),
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})
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}
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#[no_mangle]
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pub extern "C" fn wasm_engine_new_with_config(c: Box<wasm_config_t>) -> Box<wasm_engine_t> {
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let config = c.config;
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Box::new(wasm_engine_t {
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engine: Engine::new(&config),
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})
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}
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