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denoland-deno/runtime/build.rs
Matt Mastracci a1764f7690
refactor(core): Improve ergonomics of managing ASCII strings (#18498)
This is a follow-on to the earlier work in reducing string copies,
mainly focused on ensuring that ASCII strings are easy to provide to the
JS runtime.

While we are replacing a 16-byte reference in a number of places with a
24-byte structure (measured via `std::mem::size_of`), the reduction in
copies wins out over the additional size of the arguments passed into
functions.

Benchmarking shows approximately the same if not slightly less wallclock
time/instructions retired, but I believe this continues to open up
further refactoring opportunities.
2023-04-04 06:46:31 -06:00

358 lines
9.5 KiB
Rust

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
use std::env;
use std::path::PathBuf;
#[cfg(all(
not(feature = "docsrs"),
not(feature = "dont_create_runtime_snapshot")
))]
mod startup_snapshot {
use super::*;
use deno_ast::MediaType;
use deno_ast::ParseParams;
use deno_ast::SourceTextInfo;
use deno_cache::SqliteBackedCache;
use deno_core::error::AnyError;
use deno_core::snapshot_util::*;
use deno_core::Extension;
use deno_core::ExtensionFileSource;
use deno_core::ModuleCode;
use std::path::Path;
fn transpile_ts_for_snapshotting(
file_source: &ExtensionFileSource,
) -> Result<ModuleCode, AnyError> {
let media_type = MediaType::from_path(Path::new(&file_source.specifier));
let should_transpile = match media_type {
MediaType::JavaScript => false,
MediaType::Mjs => false,
MediaType::TypeScript => true,
_ => panic!(
"Unsupported media type for snapshotting {media_type:?} for file {}",
file_source.specifier
),
};
let code = file_source.load()?;
if !should_transpile {
return Ok(code);
}
let parsed = deno_ast::parse_module(ParseParams {
specifier: file_source.specifier.to_string(),
text_info: SourceTextInfo::from_string(code.as_str().to_owned()),
media_type,
capture_tokens: false,
scope_analysis: false,
maybe_syntax: None,
})?;
let transpiled_source = parsed.transpile(&deno_ast::EmitOptions {
imports_not_used_as_values: deno_ast::ImportsNotUsedAsValues::Remove,
inline_source_map: false,
..Default::default()
})?;
Ok(transpiled_source.text.into())
}
#[derive(Clone)]
struct Permissions;
impl deno_fetch::FetchPermissions for Permissions {
fn check_net_url(
&mut self,
_url: &deno_core::url::Url,
_api_name: &str,
) -> Result<(), deno_core::error::AnyError> {
unreachable!("snapshotting!")
}
fn check_read(
&mut self,
_p: &Path,
_api_name: &str,
) -> Result<(), deno_core::error::AnyError> {
unreachable!("snapshotting!")
}
}
impl deno_websocket::WebSocketPermissions for Permissions {
fn check_net_url(
&mut self,
_url: &deno_core::url::Url,
_api_name: &str,
) -> Result<(), deno_core::error::AnyError> {
unreachable!("snapshotting!")
}
}
impl deno_web::TimersPermission for Permissions {
fn allow_hrtime(&mut self) -> bool {
unreachable!("snapshotting!")
}
fn check_unstable(
&self,
_state: &deno_core::OpState,
_api_name: &'static str,
) {
unreachable!("snapshotting!")
}
}
impl deno_ffi::FfiPermissions for Permissions {
fn check(
&mut self,
_path: Option<&Path>,
) -> Result<(), deno_core::error::AnyError> {
unreachable!("snapshotting!")
}
}
impl deno_napi::NapiPermissions for Permissions {
fn check(
&mut self,
_path: Option<&Path>,
) -> Result<(), deno_core::error::AnyError> {
unreachable!("snapshotting!")
}
}
impl deno_node::NodePermissions for Permissions {
fn check_read(
&mut self,
_p: &Path,
) -> Result<(), deno_core::error::AnyError> {
unreachable!("snapshotting!")
}
}
impl deno_net::NetPermissions for Permissions {
fn check_net<T: AsRef<str>>(
&mut self,
_host: &(T, Option<u16>),
_api_name: &str,
) -> Result<(), deno_core::error::AnyError> {
unreachable!("snapshotting!")
}
fn check_read(
&mut self,
_p: &Path,
_api_name: &str,
) -> Result<(), deno_core::error::AnyError> {
unreachable!("snapshotting!")
}
fn check_write(
&mut self,
_p: &Path,
_api_name: &str,
) -> Result<(), deno_core::error::AnyError> {
unreachable!("snapshotting!")
}
}
impl deno_fs::FsPermissions for Permissions {
fn check_read(
&mut self,
_path: &Path,
_api_name: &str,
) -> Result<(), AnyError> {
unreachable!("snapshotting!")
}
fn check_read_blind(
&mut self,
_path: &Path,
_display: &str,
_api_name: &str,
) -> Result<(), AnyError> {
unreachable!("snapshotting!")
}
fn check_write(
&mut self,
_path: &Path,
_api_name: &str,
) -> Result<(), AnyError> {
unreachable!("snapshotting!")
}
fn check_read_all(&mut self, _api_name: &str) -> Result<(), AnyError> {
unreachable!("snapshotting!")
}
fn check_write_all(&mut self, _api_name: &str) -> Result<(), AnyError> {
unreachable!("snapshotting!")
}
}
impl deno_kv::sqlite::SqliteDbHandlerPermissions for Permissions {
fn check_read(
&mut self,
_path: &Path,
_api_name: &str,
) -> Result<(), AnyError> {
unreachable!("snapshotting!")
}
fn check_write(
&mut self,
_path: &Path,
_api_name: &str,
) -> Result<(), AnyError> {
unreachable!("snapshotting!")
}
}
struct SnapshotNodeEnv;
impl deno_node::NodeEnv for SnapshotNodeEnv {
type P = Permissions;
type Fs = deno_node::RealFs;
}
deno_core::extension!(runtime,
deps = [
deno_webidl,
deno_console,
deno_url,
deno_tls,
deno_web,
deno_fetch,
deno_cache,
deno_websocket,
deno_webstorage,
deno_crypto,
deno_broadcast_channel,
// FIXME(bartlomieju): this should be reenabled
// "deno_node",
deno_ffi,
deno_net,
deno_napi,
deno_http,
deno_io,
deno_fs
],
esm = [
dir "js",
"01_errors.js",
"01_version.ts",
"06_util.js",
"10_permissions.js",
"11_workers.js",
"13_buffer.js",
"30_os.js",
"40_fs_events.js",
"40_http.js",
"40_process.js",
"40_signals.js",
"40_tty.js",
"41_prompt.js",
"90_deno_ns.js",
"98_global_scope.js"
],
);
#[cfg(not(feature = "snapshot_from_snapshot"))]
deno_core::extension!(
runtime_main,
deps = [runtime],
customizer = |ext: &mut deno_core::ExtensionBuilder| {
ext.esm(vec![ExtensionFileSource {
specifier: "ext:runtime_main/js/99_main.js",
code: deno_core::ExtensionFileSourceCode::IncludedInBinary(
include_str!("js/99_main.js"),
),
}]);
}
);
pub fn create_runtime_snapshot(snapshot_path: PathBuf) {
// NOTE(bartlomieju): ordering is important here, keep it in sync with
// `runtime/worker.rs`, `runtime/web_worker.rs` and `cli/build.rs`!
let extensions: Vec<Extension> = vec![
deno_webidl::deno_webidl::init_ops_and_esm(),
deno_console::deno_console::init_ops_and_esm(),
deno_url::deno_url::init_ops_and_esm(),
deno_web::deno_web::init_ops_and_esm::<Permissions>(
deno_web::BlobStore::default(),
Default::default(),
),
deno_fetch::deno_fetch::init_ops_and_esm::<Permissions>(
Default::default(),
),
deno_cache::deno_cache::init_ops_and_esm::<SqliteBackedCache>(None),
deno_websocket::deno_websocket::init_ops_and_esm::<Permissions>(
"".to_owned(),
None,
None,
),
deno_webstorage::deno_webstorage::init_ops_and_esm(None),
deno_crypto::deno_crypto::init_ops_and_esm(None),
deno_broadcast_channel::deno_broadcast_channel::init_ops_and_esm(
deno_broadcast_channel::InMemoryBroadcastChannel::default(),
false, // No --unstable.
),
deno_ffi::deno_ffi::init_ops_and_esm::<Permissions>(false),
deno_net::deno_net::init_ops_and_esm::<Permissions>(
None, false, // No --unstable.
None,
),
deno_tls::deno_tls::init_ops_and_esm(),
deno_kv::deno_kv::init_ops_and_esm(
deno_kv::sqlite::SqliteDbHandler::<Permissions>::new(None),
false, // No --unstable
),
deno_napi::deno_napi::init_ops_and_esm::<Permissions>(),
deno_http::deno_http::init_ops_and_esm(),
deno_io::deno_io::init_ops_and_esm(Default::default()),
deno_fs::deno_fs::init_ops_and_esm::<Permissions>(false),
runtime::init_ops_and_esm(),
// FIXME(bartlomieju): these extensions are specified last, because they
// depend on `runtime`, even though it should be other way around
deno_node::deno_node::init_ops_and_esm::<SnapshotNodeEnv>(None),
#[cfg(not(feature = "snapshot_from_snapshot"))]
runtime_main::init_ops_and_esm(),
];
create_snapshot(CreateSnapshotOptions {
cargo_manifest_dir: env!("CARGO_MANIFEST_DIR"),
snapshot_path,
startup_snapshot: None,
extensions,
compression_cb: None,
snapshot_module_load_cb: Some(Box::new(transpile_ts_for_snapshotting)),
});
}
}
fn main() {
// To debug snapshot issues uncomment:
// op_fetch_asset::trace_serializer();
println!("cargo:rustc-env=TARGET={}", env::var("TARGET").unwrap());
println!("cargo:rustc-env=PROFILE={}", env::var("PROFILE").unwrap());
let o = PathBuf::from(env::var_os("OUT_DIR").unwrap());
// Main snapshot
let runtime_snapshot_path = o.join("RUNTIME_SNAPSHOT.bin");
// If we're building on docs.rs we just create
// and empty snapshot file and return, because `rusty_v8`
// doesn't actually compile on docs.rs
if env::var_os("DOCS_RS").is_some() {
let snapshot_slice = &[];
#[allow(clippy::needless_borrow)]
std::fs::write(&runtime_snapshot_path, snapshot_slice).unwrap();
}
#[cfg(all(
not(feature = "docsrs"),
not(feature = "dont_create_runtime_snapshot")
))]
startup_snapshot::create_runtime_snapshot(runtime_snapshot_path)
}