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refactor: separate threadsafe js value ref and js value ref
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| use std::marker::PhantomData; | ||
|
|
||
| use napi::bindgen_prelude::*; | ||
| use napi::{Env, NapiValue, Ref}; | ||
|
|
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| pub struct JsValueRef<T: NapiValue> { | ||
| ref_: Ref<()>, | ||
| _phantom: PhantomData<T>, | ||
| } | ||
|
|
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| impl<T: NapiValue> JsValueRef<T> { | ||
| pub fn new(env: Env, value: T) -> Result<Self> { | ||
| let ref_ = env.create_reference(value)?; | ||
|
|
||
| Ok(Self { | ||
| ref_, | ||
| _phantom: PhantomData, | ||
| }) | ||
| } | ||
|
|
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| pub fn get(&self, env: Env) -> Result<T> { | ||
| env.get_reference_value(&self.ref_) | ||
| } | ||
|
|
||
| pub fn unref(&mut self, env: Env) -> Result<u32> { | ||
| self.ref_.unref(env) | ||
| } | ||
| } | ||
|
|
||
| impl<T: NapiValue> ToNapiValue for JsValueRef<T> { | ||
| unsafe fn to_napi_value(env: sys::napi_env, val: Self) -> Result<sys::napi_value> { | ||
| val | ||
| .get(Env::from(env)) | ||
| .and_then(|v| unsafe { T::to_napi_value(env, v) }) | ||
| } | ||
| } | ||
|
|
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| impl<T: NapiValue> FromNapiValue for JsValueRef<T> { | ||
| unsafe fn from_napi_value(env: sys::napi_env, napi_val: sys::napi_value) -> Result<Self> { | ||
| JsValueRef::<T>::new(Env::from(env), unsafe { | ||
| T::from_napi_value(env, napi_val) | ||
| }?) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1,2 @@ | ||
| pub mod js_reg_exp; | ||
| pub mod js_value_ref; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,149 @@ | ||
| use std::ffi::{c_void, CString}; | ||
| use std::marker::PhantomData; | ||
| use std::ptr; | ||
| use std::sync::{Arc, Mutex}; | ||
|
|
||
| use napi::bindgen_prelude::*; | ||
| use napi::sys::napi_threadsafe_function; | ||
| use napi::NapiValue; | ||
|
|
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| use crate::js_values::js_value_ref::JsValueRef; | ||
|
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| pub struct ThreadsafeJsValueRef<T: NapiValue> { | ||
| inner: Arc<(Mutex<JsValueRef<T>>, DropJsValueRefFn<T>)>, | ||
| } | ||
|
|
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| unsafe impl<T: NapiValue> Send for ThreadsafeJsValueRef<T> {} | ||
| unsafe impl<T: NapiValue> Sync for ThreadsafeJsValueRef<T> {} | ||
|
|
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| impl<T: NapiValue> Clone for ThreadsafeJsValueRef<T> { | ||
| fn clone(&self) -> Self { | ||
| Self { | ||
| inner: self.inner.clone(), | ||
| } | ||
| } | ||
| } | ||
|
|
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| impl<T: NapiValue> Drop for ThreadsafeJsValueRef<T> { | ||
| fn drop(&mut self) { | ||
| if Arc::strong_count(&self.inner) == 1 { | ||
| let (_, drop_fn) = self.inner.as_ref(); | ||
|
|
||
| drop_fn.call(self.inner.clone()); | ||
| } | ||
| } | ||
| } | ||
|
|
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| impl<T: NapiValue> FromNapiValue for ThreadsafeJsValueRef<T> { | ||
| unsafe fn from_napi_value(env: sys::napi_env, napi_val: sys::napi_value) -> Result<Self> { | ||
| Self::new(Env::from(env), unsafe { | ||
| T::from_napi_value(env, napi_val) | ||
| }?) | ||
| } | ||
| } | ||
|
|
||
| impl<T: NapiValue> ToNapiValue for ThreadsafeJsValueRef<T> { | ||
| unsafe fn to_napi_value(env: sys::napi_env, val: Self) -> Result<sys::napi_value> { | ||
| val | ||
| .get(Env::from(env)) | ||
| .and_then(|v| unsafe { T::to_napi_value(env, v) }) | ||
| } | ||
| } | ||
|
|
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| impl<T: NapiValue> ThreadsafeJsValueRef<T> { | ||
| pub fn new(env: Env, value: T) -> Result<Self> { | ||
| let js_ref = JsValueRef::new(env, value)?; | ||
|
|
||
| Ok(Self { | ||
| inner: Arc::new((Mutex::new(js_ref), DropJsValueRefFn::new(env)?)), | ||
| }) | ||
| } | ||
|
|
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| pub fn get(&self, env: Env) -> Result<T> { | ||
| let (ref_, _) = self.inner.as_ref(); | ||
|
|
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| ref_ | ||
| .lock() | ||
| .map_err(|e| { | ||
| Error::new( | ||
| Status::GenericFailure, | ||
| format!("Failed to lock mutex: {}", e.to_string()), | ||
| ) | ||
| })? | ||
| .get(env) | ||
| } | ||
| } | ||
|
|
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| struct DropJsValueRefFn<T: NapiValue> { | ||
| inner: napi_threadsafe_function, | ||
| _phantom: PhantomData<T>, | ||
| } | ||
|
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| impl<T: NapiValue> DropJsValueRefFn<T> { | ||
| pub fn new(env: Env) -> Result<Self> { | ||
| let mut raw_cb = std::ptr::null_mut(); | ||
|
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| let mut async_resource_name = ptr::null_mut(); | ||
| let s = "napi_rs_js_value_ref_drop"; | ||
| let len = s.len(); | ||
| let s = CString::new(s)?; | ||
| check_status!(unsafe { | ||
| sys::napi_create_string_utf8(env.raw(), s.as_ptr(), len, &mut async_resource_name) | ||
| })?; | ||
|
|
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| check_status! {unsafe { | ||
| sys::napi_create_threadsafe_function( | ||
| env.raw(), | ||
| ptr::null_mut(), | ||
| ptr::null_mut(), | ||
| async_resource_name, | ||
| 0, | ||
| 1, | ||
| ptr::null_mut(), | ||
| None, | ||
| ptr::null_mut(), | ||
| Some(call_js_cb::<T>), | ||
| &mut raw_cb, | ||
| ) | ||
| }}?; | ||
|
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| Ok(Self { | ||
| inner: raw_cb, | ||
| _phantom: PhantomData, | ||
| }) | ||
| } | ||
|
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| pub fn call(&self, value: Arc<(Mutex<JsValueRef<T>>, DropJsValueRefFn<T>)>) { | ||
| check_status! { | ||
| unsafe { | ||
| sys::napi_call_threadsafe_function(self.inner, Arc::into_raw(value) as *mut _, sys::ThreadsafeFunctionCallMode::nonblocking) | ||
| } | ||
| }.expect("Failed to call threadsafe function"); | ||
| } | ||
| } | ||
|
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| impl<T: NapiValue> Drop for DropJsValueRefFn<T> { | ||
| fn drop(&mut self) { | ||
| check_status! { | ||
| unsafe { | ||
| sys::napi_release_threadsafe_function(self.inner, sys::ThreadsafeFunctionReleaseMode::release) | ||
| } | ||
| }.expect("Failed to release threadsafe function"); | ||
| } | ||
| } | ||
|
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| unsafe extern "C" fn call_js_cb<T: NapiValue>( | ||
| raw_env: sys::napi_env, | ||
| _: sys::napi_value, | ||
| _: *mut c_void, | ||
| data: *mut c_void, | ||
| ) { | ||
| let arc = unsafe { Arc::<(Mutex<JsValueRef<T>>, DropJsValueRefFn<T>)>::from_raw(data.cast()) }; | ||
| let (ref_, _) = arc.as_ref(); | ||
|
|
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| ref_ | ||
| .lock() | ||
| .expect("Failed to lock") | ||
| .unref(Env::from(raw_env)) | ||
| .expect("Failed to unref"); | ||
| } | ||
