1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227
use crate::jsutils::helper_tasks::{add_helper_task, add_helper_task_async};
use crate::jsutils::JsError;
use crate::quickjs_utils::promises::QuickJsPromiseAdapter;
use crate::quickjsrealmadapter::QuickJsRealmAdapter;
use crate::quickjsvalueadapter::QuickJsValueAdapter;
use futures::Future;
#[allow(clippy::type_complexity)]
/// create a new promise with a producer and a mapper
/// the producer will run in a helper thread(in the tokio thread pool) and thus get a result asynchronously
/// the resulting value will then be mapped to a JSValueRef by the mapper in the EventQueue thread
/// the promise which was returned is then resolved with the value which is returned by the mapper
pub fn new_resolving_promise<P, R, M>(
realm: &QuickJsRealmAdapter,
producer: P,
mapper: M,
) -> Result<QuickJsValueAdapter, JsError>
where
R: Send + 'static,
P: FnOnce() -> Result<R, JsError> + Send + 'static,
M: FnOnce(&QuickJsRealmAdapter, R) -> Result<QuickJsValueAdapter, JsError> + Send + 'static,
{
// create promise
let promise_ref = realm.create_promise()?;
let return_ref = promise_ref.js_promise_get_value(realm);
// add to map and keep id
let id = realm.cache_promise(promise_ref);
let rti_ref = realm.get_runtime_facade_inner();
let realm_id = realm.get_realm_id().to_string();
// go async
add_helper_task(move || {
// in helper thread, produce result
let produced_result = producer();
if let Some(rti) = rti_ref.upgrade() {
rti.add_rt_task_to_event_loop_void(move |rt| {
if let Some(realm) = rt.get_realm(realm_id.as_str()) {
// in q_js_rt worker thread, resolve promise
// retrieve promise
let prom_ref_opt: Option<QuickJsPromiseAdapter> =
realm.consume_cached_promise(id);
if let Some(prom_ref) = prom_ref_opt {
//let prom_ref = realm.js_promise_cache_consume(id);
match produced_result {
Ok(ok_res) => {
// map result to JSValueRef
let raw_res = mapper(realm, ok_res);
// resolve or reject promise
match raw_res {
Ok(val_ref) => {
if let Err(e) = prom_ref.js_promise_resolve(realm, &val_ref)
{
log::error!(
"[{}] could not resolve promise5: {}",
realm.get_realm_id(),
e
);
}
}
Err(err) => {
let err_ref = realm
.create_error(
err.get_name(),
err.get_message(),
err.get_stack(),
)
.expect("could not create error");
if let Err(e) = prom_ref.js_promise_reject(realm, &err_ref)
{
log::error!(
"[{}] could not reject promise4: {}",
realm.get_realm_id(),
e
);
}
}
}
}
Err(err) => {
// todo use error:new_error(err)
let err_ref = realm
.create_error(
err.get_name(),
err.get_message(),
err.get_stack(),
)
.expect("could not create error");
if let Err(e) = prom_ref.js_promise_reject(realm, &err_ref) {
log::error!(
"[{}] could not reject promise3: {}",
realm.get_realm_id(),
e
);
}
}
}
} else {
log::error!(
"async promise running for dropped realm: {} promise_id:{}",
realm_id,
id
);
}
} else {
log::error!("async promise running for dropped realm: {}", realm_id);
}
});
} else {
log::error!("async promise running for dropped runtime");
}
});
Ok(return_ref)
}
#[allow(clippy::type_complexity)]
/// create a new promise with an async producer and a mapper
/// the producer will be awaited asynchronously and
/// the resulting value will then be mapped to a JSValueRef by the mapper in the EventQueue thread
/// the promise which was returned is then resolved with the value which is returned by the mapper
pub(crate) fn new_resolving_promise_async<P, R, M>(
realm: &QuickJsRealmAdapter,
producer: P,
mapper: M,
) -> Result<QuickJsValueAdapter, JsError>
where
R: Send + 'static,
P: Future<Output = Result<R, JsError>> + Send + 'static,
M: FnOnce(&QuickJsRealmAdapter, R) -> Result<QuickJsValueAdapter, JsError> + Send + 'static,
{
// create promise
let promise_ref = realm.create_promise()?;
let return_ref = promise_ref.js_promise_get_value(realm);
// add to map and keep id
let id = realm.cache_promise(promise_ref);
let rti_ref = realm.get_runtime_facade_inner();
let realm_id = realm.get_realm_id().to_string();
// go async
let _ignore_result = add_helper_task_async(async move {
// in helper thread, produce result
let produced_result = producer.await;
if let Some(rti) = rti_ref.upgrade() {
rti.add_rt_task_to_event_loop_void(move |rt| {
if let Some(realm) = rt.get_realm(realm_id.as_str()) {
// in q_js_rt worker thread, resolve promise
// retrieve promise
let prom_ref_opt: Option<QuickJsPromiseAdapter> =
realm.consume_cached_promise(id);
if let Some(prom_ref) = prom_ref_opt {
//let prom_ref = realm.js_promise_cache_consume(id);
match produced_result {
Ok(ok_res) => {
// map result to JSValueRef
let raw_res = mapper(realm, ok_res);
// resolve or reject promise
match raw_res {
Ok(val_ref) => {
if let Err(e) = prom_ref.js_promise_resolve(realm, &val_ref)
{
log::error!(
"[{}] could not resolve promise: {}",
realm.get_realm_id(),
e
);
}
}
Err(err) => {
let err_ref = realm
.create_error(
err.get_name(),
err.get_message(),
err.get_stack(),
)
.expect("could not create err");
if let Err(e) = prom_ref.js_promise_reject(realm, &err_ref)
{
log::error!(
"[{}] could not reject promise: {}",
realm.get_realm_id(),
e
);
}
}
}
}
Err(err) => {
// todo use error:new_error(err)
let err_ref = realm
.create_error(
err.get_name(),
err.get_message(),
err.get_stack(),
)
.expect("could not create str");
if let Err(e) = prom_ref.js_promise_reject(realm, &err_ref) {
log::error!(
"[{}] could not reject promise2: {}",
realm.get_realm_id(),
e
);
}
}
}
} else {
log::error!(
"async promise running on dropped realm: {} promise_id:{}",
realm_id,
id
);
}
} else {
log::error!("async promise running on dropped realm: {}", realm_id);
}
});
} else {
log::error!("async promise running on dropped runtime");
}
});
Ok(return_ref)
}