feat: make package sync by using Arc not Rc

Author: washanhanzi

src/cargo/core/manifest.rs

@@ -3,7 +3,6 @@ use std::collections::{BTreeMap, HashMap};
 use std::fmt;
 use std::hash::{Hash, Hasher};
 use std::path::{Path, PathBuf};
-use std::rc::Rc;
 use std::sync::Arc;
 
 use anyhow::Context as _;
@@ -62,10 +61,10 @@ impl EitherManifest {
 #[derive(Clone, Debug)]
 pub struct Manifest {
     // alternate forms of manifests:
-    contents: Rc<String>,
-    document: Rc<toml_edit::ImDocument<String>>,
-    original_toml: Rc<TomlManifest>,
-    normalized_toml: Rc<TomlManifest>,
+    contents: Arc<String>,
+    document: Arc<toml_edit::ImDocument<String>>,
+    original_toml: Arc<TomlManifest>,
+    normalized_toml: Arc<TomlManifest>,
     summary: Summary,
 
     // this form of manifest:
@@ -108,10 +107,10 @@ pub struct Warnings(Vec<DelayedWarning>);
 #[derive(Clone, Debug)]
 pub struct VirtualManifest {
     // alternate forms of manifests:
-    contents: Rc<String>,
-    document: Rc<toml_edit::ImDocument<String>>,
-    original_toml: Rc<TomlManifest>,
-    normalized_toml: Rc<TomlManifest>,
+    contents: Arc<String>,
+    document: Arc<toml_edit::ImDocument<String>>,
+    original_toml: Arc<TomlManifest>,
+    normalized_toml: Arc<TomlManifest>,
 
     // this form of manifest:
     replace: Vec<(PackageIdSpec, Dependency)>,
@@ -484,10 +483,10 @@ compact_debug! {
 
 impl Manifest {
     pub fn new(
-        contents: Rc<String>,
-        document: Rc<toml_edit::ImDocument<String>>,
-        original_toml: Rc<TomlManifest>,
-        normalized_toml: Rc<TomlManifest>,
+        contents: Arc<String>,
+        document: Arc<toml_edit::ImDocument<String>>,
+        original_toml: Arc<TomlManifest>,
+        normalized_toml: Arc<TomlManifest>,
         summary: Summary,
 
         default_kind: Option<CompileKind>,
@@ -726,10 +725,10 @@ impl Manifest {
 
 impl VirtualManifest {
     pub fn new(
-        contents: Rc<String>,
-        document: Rc<toml_edit::ImDocument<String>>,
-        original_toml: Rc<TomlManifest>,
-        normalized_toml: Rc<TomlManifest>,
+        contents: Arc<String>,
+        document: Arc<toml_edit::ImDocument<String>>,
+        original_toml: Arc<TomlManifest>,
+        normalized_toml: Arc<TomlManifest>,
         replace: Vec<(PackageIdSpec, Dependency)>,
         patch: HashMap<Url, Vec<Dependency>>,
         workspace: WorkspaceConfig,

src/cargo/core/package.rs

@@ -5,7 +5,7 @@ use std::fmt;
 use std::hash;
 use std::mem;
 use std::path::{Path, PathBuf};
-use std::rc::Rc;
+use std::sync::Arc;
 use std::time::{Duration, Instant};
 
 use anyhow::Context as _;
@@ -42,7 +42,7 @@ use crate::util::{self, internal, GlobalContext, Progress, ProgressStyle};
 /// A package is a `Cargo.toml` file plus all the files that are part of it.
 #[derive(Clone)]
 pub struct Package {
-    inner: Rc<PackageInner>,
+    inner: Arc<PackageInner>,
 }
 
 #[derive(Clone)]
@@ -101,7 +101,7 @@ impl Package {
     /// Creates a package from a manifest and its location.
     pub fn new(manifest: Manifest, manifest_path: &Path) -> Package {
         Package {
-            inner: Rc::new(PackageInner {
+            inner: Arc::new(PackageInner {
                 manifest,
                 manifest_path: manifest_path.to_path_buf(),
             }),
@@ -118,7 +118,7 @@ impl Package {
     }
     /// Gets the manifest.
     pub fn manifest_mut(&mut self) -> &mut Manifest {
-        &mut Rc::make_mut(&mut self.inner).manifest
+        &mut Arc::make_mut(&mut self.inner).manifest
     }
     /// Gets the path to the manifest.
     pub fn manifest_path(&self) -> &Path {
@@ -179,7 +179,7 @@ impl Package {
 
     pub fn map_source(self, to_replace: SourceId, replace_with: SourceId) -> Package {
         Package {
-            inner: Rc::new(PackageInner {
+            inner: Arc::new(PackageInner {
                 manifest: self.manifest().clone().map_source(to_replace, replace_with),
                 manifest_path: self.manifest_path().to_owned(),
             }),

src/cargo/util/toml/mod.rs

@@ -3,8 +3,8 @@ use std::borrow::Cow;
 use std::collections::{BTreeMap, BTreeSet, HashMap};
 use std::ffi::OsStr;
 use std::path::{Path, PathBuf};
-use std::rc::Rc;
 use std::str::{self, FromStr};
+use std::sync::Arc;
 
 use crate::core::summary::MissingDependencyError;
 use crate::AlreadyPrintedError;
@@ -1751,10 +1751,10 @@ pub fn to_real_manifest(
     let default_run = normalized_package.default_run.clone();
     let metabuild = normalized_package.metabuild.clone().map(|sov| sov.0);
     let manifest = Manifest::new(
-        Rc::new(contents),
-        Rc::new(document),
-        Rc::new(original_toml),
-        Rc::new(normalized_toml),
+        Arc::new(contents),
+        Arc::new(document),
+        Arc::new(original_toml),
+        Arc::new(normalized_toml),
         summary,
         default_kind,
         forced_kind,
@@ -1930,10 +1930,10 @@ fn to_virtual_manifest(
         bail!("virtual manifests must be configured with [workspace]");
     }
     let manifest = VirtualManifest::new(
-        Rc::new(contents),
-        Rc::new(document),
-        Rc::new(original_toml),
-        Rc::new(normalized_toml),
+        Arc::new(contents),
+        Arc::new(document),
+        Arc::new(original_toml),
+        Arc::new(normalized_toml),
         replace,
         patch,
         workspace_config,