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Avoid deadlocks in emscripten dyn calls

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Do not hold locks on EmEnv's EmscriptenData into the actual call into the module
This commit is contained in:
Julius Michaelis
2022-01-27 23:06:35 +09:00
parent 75cfdaa6ca
commit 24abeccccb
1 changed files with 7 additions and 9 deletions
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16
lib/emscripten/src/emscripten_target.rs
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@@ -140,8 +140,8 @@ pub fn _getnameinfo(
macro_rules! invoke {
($ctx: ident, $name:ident, $name_ref:ident, $( $arg:ident ),*) => {{
let sp = get_emscripten_data($ctx).stack_save_ref().expect("stack_save is None").call().expect("stack_save call failed");
let result = get_emscripten_data($ctx).$name_ref().expect(concat!("Dynamic call is None: ", stringify!($name))).call($($arg),*);
match result {
let call = get_emscripten_data($ctx).$name_ref().expect(concat!("Dynamic call is None: ", stringify!($name))).clone();
match call.call($($arg),*) {
Ok(v) => v,
Err(_e) => {
get_emscripten_data($ctx).stack_restore_ref().expect("stack_restore is None").call(sp).expect("stack_restore call failed");
@@ -156,8 +156,8 @@ macro_rules! invoke {
macro_rules! invoke_no_return {
($ctx: ident, $name:ident, $name_ref:ident, $( $arg:ident ),*) => {{
let sp = get_emscripten_data($ctx).stack_save_ref().expect("stack_save is None").call().expect("stack_save call failed");
let result = get_emscripten_data($ctx).$name_ref().expect(concat!("Dynamic call is None: ", stringify!($name))).call($($arg),*);
match result {
let call = get_emscripten_data($ctx).$name_ref().expect(concat!("Dynamic call is None: ", stringify!($name))).clone();
match call.call($($arg),*) {
Ok(v) => v,
Err(_e) => {
get_emscripten_data($ctx).stack_restore_ref().expect("stack_restore is None").call(sp).expect("stack_restore call failed");
@@ -171,11 +171,9 @@ macro_rules! invoke_no_return {
// The invoke_j functions do not save the stack
macro_rules! invoke_no_stack_save {
($ctx: ident, $name:ident, $name_ref:ident, $( $arg:ident ),*) => {{
if let Some(call) = get_emscripten_data($ctx).$name_ref() {
call.call($($arg),*).unwrap()
} else {
panic!("{} is set to None", stringify!($name));
}
let call = get_emscripten_data($ctx).$name_ref().expect(concat!(stringify!($name), " is set to None")).clone();
call.call($($arg),*).unwrap()
}}
}