c975a92a3a
* Remove unsafety from `Trap` API This commit removes the `unsafe impl Send` for `Trap` by removing the internal `HostRef` and leaving `HostRef` entirely as an implementation detail of the C API. cc #708 * Run rustfmt
54 lines
1.2 KiB
Rust
54 lines
1.2 KiB
Rust
use std::cell::Cell;
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use crate::Trap;
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use wasmtime_environ::ir::{SourceLoc, TrapCode};
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use wasmtime_environ::TrapInformation;
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use wasmtime_jit::trampoline::binemit;
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// Randomly selected user TrapCode magic number 13.
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pub const API_TRAP_CODE: TrapCode = TrapCode::User(13);
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thread_local! {
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static RECORDED_API_TRAP: Cell<Option<Trap>> = Cell::new(None);
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}
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pub fn record_api_trap(trap: Trap) {
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RECORDED_API_TRAP.with(|data| {
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let trap = Cell::new(Some(trap));
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data.swap(&trap);
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assert!(
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trap.take().is_none(),
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"Only one API trap per thread can be recorded at a moment!"
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);
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});
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}
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pub fn take_api_trap() -> Option<Trap> {
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RECORDED_API_TRAP.with(|data| data.take())
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}
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pub(crate) struct TrapSink {
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pub traps: Vec<TrapInformation>,
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}
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impl TrapSink {
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pub fn new() -> Self {
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Self { traps: Vec::new() }
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}
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}
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impl binemit::TrapSink for TrapSink {
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fn trap(
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&mut self,
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code_offset: binemit::CodeOffset,
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source_loc: SourceLoc,
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trap_code: TrapCode,
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) {
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self.traps.push(TrapInformation {
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code_offset,
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source_loc,
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trap_code,
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});
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}
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}
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