android: disable jit to workaround servo#31134

Signed-off-by: Mukilan Thiyagarajan <[email protected]>

components/script/script_runtime.rs

@@ -530,6 +530,11 @@ unsafe fn new_rt_and_cx_with_parent(
 
     // Enable or disable the JITs.
     let cx_opts = &mut *ContextOptionsRef(cx);
+    JS_SetGlobalJitCompilerOption(
+        cx,
+        JSJitCompilerOption::JSJITCOMPILER_BASELINE_INTERPRETER_ENABLE,
+        pref!(js.baseline.enabled) as u32,
+    );
     JS_SetGlobalJitCompilerOption(
         cx,
         JSJitCompilerOption::JSJITCOMPILER_BASELINE_ENABLE,

ports/libsimpleservo/jniapi/src/lib.rs

@@ -4,6 +4,7 @@
 
 #![allow(non_snake_case)]
 
+use std::collections::HashMap;
 use std::os::raw::{c_char, c_int, c_void};
 use std::sync::Arc;
 use std::thread;
@@ -844,6 +845,13 @@ fn get_options(
     };
 
     let native_window = unsafe { ANativeWindow_fromSurface(env.get_native_interface(), surface) };
+
+    // FIXME: enable JIT compilation on Android after the
+    // startup crash issue (#31134) is fixed.
+    let mut prefs = HashMap::new();
+    prefs.insert("js.baseline.enabled".to_string(), false.into());
+    prefs.insert("js.ion.enabled".to_string(), false.into());
+
     let opts = InitOptions {
         args: args.unwrap_or(vec![]),
         coordinates,
@@ -852,7 +860,7 @@ fn get_options(
         gl_context_pointer: None,
         native_display_pointer: None,
         surfman_integration: simpleservo::SurfmanIntegration::Widget(native_window),
-        prefs: None,
+        prefs: Some(prefs),
     };
     Ok((opts, log, log_str, gst_debug_str))
 }