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42 lines
1.1 KiB
Rust
42 lines
1.1 KiB
Rust
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
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use deno_core::Snapshot;
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use log::debug;
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use once_cell::sync::Lazy;
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use std::path::PathBuf;
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pub static RUNTIME_SNAPSHOT: Lazy<Box<[u8]>> = Lazy::new(
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#[allow(clippy::uninit_vec)]
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#[cold]
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#[inline(never)]
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|| {
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static COMPRESSED_RUNTIME_SNAPSHOT: &[u8] =
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include_bytes!(concat!(env!("OUT_DIR"), "/RUNTIME_SNAPSHOT.bin"));
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let size =
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u32::from_le_bytes(COMPRESSED_RUNTIME_SNAPSHOT[0..4].try_into().unwrap())
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as usize;
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let mut vec = Vec::with_capacity(size);
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// SAFETY: vec is allocated with exact snapshot size (+ alignment)
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// SAFETY: non zeroed bytes are overwritten with decompressed snapshot
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unsafe {
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vec.set_len(size);
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}
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lzzzz::lz4::decompress(&COMPRESSED_RUNTIME_SNAPSHOT[4..], &mut vec)
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.unwrap();
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vec.into_boxed_slice()
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},
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);
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pub fn deno_isolate_init() -> Snapshot {
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debug!("Deno isolate init with snapshots.");
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Snapshot::Static(&RUNTIME_SNAPSHOT)
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}
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pub fn get_99_main() -> PathBuf {
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let manifest = env!("CARGO_MANIFEST_DIR");
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let path = PathBuf::from(manifest);
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path.join("js").join("99_main.js")
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}
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