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Use our OOM-handling PrimaryMap in the wasmtime_environ::module_artifacts module #12623

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Merged
fitzgen merged 1 commit into from
Feb 25, 2026
Merged

Use our OOM-handling PrimaryMap in the wasmtime_environ::module_artifacts module #12623

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28 changes: 17 additions & 11 deletions crates/environ/src/module_artifacts.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,11 +2,13 @@
//! with `bincode` as part of a module's compilation process.

use crate::prelude::*;
use crate::{FilePos, FuncIndex, FuncKey, FuncKeyIndex, FuncKeyKind, FuncKeyNamespace, Module};
use crate::{
EntityRef, FilePos, FuncIndex, FuncKey, FuncKeyIndex, FuncKeyKind, FuncKeyNamespace, Module,
PanicOnOom as _, collections::PrimaryMap,
};
use core::ops::Range;
use core::{fmt, u32};
use core::{iter, str};
use cranelift_entity::{EntityRef, PrimaryMap};
use serde_derive::{Deserialize, Serialize};
#[cfg(feature = "rr")]
use sha2::{Digest, Sha256};
Expand Down Expand Up @@ -158,16 +160,18 @@ impl CompiledFunctionsTableBuilder {
})
.unwrap_or_else(|| {
let start = self.inner.func_locs.next_key();
let ns_idx = self.inner.namespaces.push(key_ns);
let ns_idx2 = self.inner.func_loc_starts.push(start);
let ns_idx = self.inner.namespaces.push(key_ns).panic_on_oom();
let ns_idx2 = self.inner.func_loc_starts.push(start).panic_on_oom();
let ns_idx3 = self
.inner
.sparse_starts
.push(self.inner.sparse_indices.next_key());
.push(self.inner.sparse_indices.next_key())
.panic_on_oom();
let ns_idx4 = self
.inner
.src_loc_starts
.push(self.inner.src_locs.next_key());
.push(self.inner.src_locs.next_key())
.panic_on_oom();
debug_assert_eq!(ns_idx, ns_idx2);
debug_assert_eq!(ns_idx, ns_idx3);
debug_assert_eq!(ns_idx, ns_idx4);
Expand Down Expand Up @@ -197,26 +201,28 @@ impl CompiledFunctionsTableBuilder {
let gap = index.index() - self.inner.func_locs.len();
self.inner
.func_locs
.extend(iter::repeat(null_func_loc).take(gap));
.try_extend(iter::repeat(null_func_loc).take(gap))
.panic_on_oom();
debug_assert_eq!(index, self.inner.func_locs.next_key());

if CompiledFunctionsTable::has_src_locs(key_ns.kind()) {
self.inner
.src_locs
.extend(iter::repeat(FilePos::none()).take(gap));
.try_extend(iter::repeat(FilePos::none()).take(gap))
.panic_on_oom();
}
} else {
debug_assert!(
src_loc.is_none(),
"sparse keys do not have source locations"
);
self.inner.sparse_indices.push(key_index);
self.inner.sparse_indices.push(key_index).panic_on_oom();
}

// And finally, we push this entry.
self.inner.func_locs.push(func_loc);
self.inner.func_locs.push(func_loc).panic_on_oom();
if CompiledFunctionsTable::has_src_locs(key_ns.kind()) {
self.inner.src_locs.push(src_loc);
self.inner.src_locs.push(src_loc).panic_on_oom();
} else {
debug_assert!(src_loc.is_none());
}
Expand Down