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script: Add gdb/lldb helper to see the current JS stack. (#34791)

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Signed-off-by: Josh Matthews <josh@joshmatthews.net>
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Josh Matthews 2024-12-29 18:59:38 -05:00 • committed by GitHub
parent 93ae8d22fc
commit 9156ee3fa1
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1 changed files with 14 additions and 8 deletions
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22
components/script/dom/window.rs
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@ -32,7 +32,10 @@ use euclid::{Point2D, Rect, Scale, Size2D, Vector2D};
use ipc_channel::ipc::{self, IpcSender}; use ipc_channel::ipc::{self, IpcSender};
use ipc_channel::router::ROUTER; use ipc_channel::router::ROUTER;
use js::conversions::ToJSValConvertible; use js::conversions::ToJSValConvertible;
use js::jsapi::{GCReason, Heap, JSAutoRealm, JSObject, StackFormat, JSPROP_ENUMERATE, JS_GC}; use js::glue::DumpJSStack;
use js::jsapi::{
GCReason, Heap, JSAutoRealm, JSContext as RawJSContext, JSObject, JSPROP_ENUMERATE, JS_GC,
};
use js::jsval::{NullValue, UndefinedValue}; use js::jsval::{NullValue, UndefinedValue};
use js::rust::wrappers::JS_DefineProperty; use js::rust::wrappers::JS_DefineProperty;
use js::rust::{ use js::rust::{
@ -1125,14 +1128,10 @@ impl WindowMethods<crate::DomTypeHolder> for Window {
#[allow(unsafe_code)] #[allow(unsafe_code)]
fn Js_backtrace(&self) { fn Js_backtrace(&self) {
unsafe { unsafe {
capture_stack!(in(*self.get_cx()) let stack); println!("Current JS stack:");
let js_stack = stack.and_then(|s| s.as_string(None, StackFormat::SpiderMonkey)); dump_js_stack(*self.get_cx());
let rust_stack = Backtrace::new(); let rust_stack = Backtrace::new();
println!( println!("Current Rust stack:\n{:?}", rust_stack);
"Current JS stack:\n{}\nCurrent Rust stack:\n{:?}",
js_stack.unwrap_or_default(),
rust_stack
);
} }
} }
@ -3060,3 +3059,10 @@ fn is_named_element_with_name_attribute(elem: &Element) -> bool {
fn is_named_element_with_id_attribute(elem: &Element) -> bool { fn is_named_element_with_id_attribute(elem: &Element) -> bool {
elem.is_html_element() elem.is_html_element()
} }
#[allow(unsafe_code)]
#[no_mangle]
/// Helper for interactive debugging sessions in lldb/gdb.
unsafe extern "C" fn dump_js_stack(cx: *mut RawJSContext) {
DumpJSStack(cx, true, false, false);
}