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Diffstat (limited to 'toolkit/components/uniffi-fixture-refcounts')
4 files changed, 55 insertions, 0 deletions
diff --git a/toolkit/components/uniffi-fixture-refcounts/Cargo.toml b/toolkit/components/uniffi-fixture-refcounts/Cargo.toml new file mode 100644 index 0000000000..877e502711 --- /dev/null +++ b/toolkit/components/uniffi-fixture-refcounts/Cargo.toml @@ -0,0 +1,12 @@ +[package] +name = "uniffi-fixture-refcounts" +edition = "2021" +version = "0.21.0" +license = "MPL-2.0" +publish = false + +[dependencies] +uniffi = { workspace = true } + +[build-dependencies] +uniffi = { workspace = true, features = ["build"] } diff --git a/toolkit/components/uniffi-fixture-refcounts/build.rs b/toolkit/components/uniffi-fixture-refcounts/build.rs new file mode 100644 index 0000000000..9ea03e12de --- /dev/null +++ b/toolkit/components/uniffi-fixture-refcounts/build.rs @@ -0,0 +1,7 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +fn main() { + uniffi::generate_scaffolding("./src/refcounts.udl").unwrap(); +} diff --git a/toolkit/components/uniffi-fixture-refcounts/src/lib.rs b/toolkit/components/uniffi-fixture-refcounts/src/lib.rs new file mode 100644 index 0000000000..e453b22a4a --- /dev/null +++ b/toolkit/components/uniffi-fixture-refcounts/src/lib.rs @@ -0,0 +1,28 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/// This crate exists to test managing the Rust Arc strong counts as JS objects are +/// created/destroyed. See `test_refcounts.js` for how it's used. + +use std::sync::{Arc, Mutex}; + +pub struct SingletonObject; + +impl SingletonObject { + pub fn method(&self) { } +} + +static SINGLETON: Mutex<Option<Arc<SingletonObject>>> = Mutex::new(None); + +pub fn get_singleton() -> Arc<SingletonObject> { + Arc::clone(SINGLETON.lock().unwrap().get_or_insert_with(|| Arc::new(SingletonObject))) +} + +pub fn get_js_refcount() -> i32 { + // Subtract 2: one for the reference in the Mutex and one for the temporary reference that + // we're calling Arc::strong_count on. + (Arc::strong_count(&get_singleton()) as i32) - 2 +} + +include!(concat!(env!("OUT_DIR"), "/refcounts.uniffi.rs")); diff --git a/toolkit/components/uniffi-fixture-refcounts/src/refcounts.udl b/toolkit/components/uniffi-fixture-refcounts/src/refcounts.udl new file mode 100644 index 0000000000..25ec83cfcc --- /dev/null +++ b/toolkit/components/uniffi-fixture-refcounts/src/refcounts.udl @@ -0,0 +1,8 @@ +namespace refcounts { + SingletonObject get_singleton(); + i32 get_js_refcount(); +}; + +interface SingletonObject { + void method(); +}; |