Expose signals_based_traps config option to C API (#11879)

Author: vdimir

crates/c-api/include/wasmtime/config.h

@@ -451,6 +451,19 @@ WASM_API_EXTERN void wasmtime_config_cranelift_flag_set(wasm_config_t *,
  */
 WASMTIME_CONFIG_PROP(void, macos_use_mach_ports, bool)
 
+/**
+ * \brief Configures Wasmtime to not use signals-based trap handlers, for
+ * example disables `SIGILL` and `SIGSEGV` handler registration on Unix
+ * platforms.
+ *
+ * This option defaults to `true`: signals-based trap handlers are enabled
+ * by default.
+ *
+ * For more information see the Rust documentation at
+ * https://docs.wasmtime.dev/api/wasmtime/struct.Config.html#method.signals_based_traps
+ */
+WASMTIME_CONFIG_PROP(void, signals_based_traps, bool)
+
 /**
  * Return the data from a LinearMemory instance.
  *

crates/c-api/include/wasmtime/config.hh

@@ -523,6 +523,12 @@ public:
     wasmtime_config_macos_use_mach_ports_set(ptr.get(), enable);
   }
 
+  /// \brief Configures Wasmtime to not use signals-based trap handlers
+  /// https://docs.wasmtime.dev/api/wasmtime/struct.Config.html#method.signals_based_traps
+  void signals_based_traps(bool enable) {
+    wasmtime_config_signals_based_traps_set(ptr.get(), enable);
+  }
+
 #ifdef WASMTIME_FEATURE_CACHE
   /// \brief Loads the default cache configuration present on the system.
   ///

crates/c-api/src/config.rs

@@ -277,6 +277,11 @@ pub extern "C" fn wasmtime_config_macos_use_mach_ports_set(c: &mut wasm_config_t
     c.config.macos_use_mach_ports(enabled);
 }
 
+#[unsafe(no_mangle)]
+pub extern "C" fn wasmtime_config_signals_based_traps_set(c: &mut wasm_config_t, enable: bool) {
+    c.config.signals_based_traps(enable);
+}
+
 #[unsafe(no_mangle)]
 #[cfg(any(feature = "cranelift", feature = "winch"))]
 pub unsafe extern "C" fn wasmtime_config_cranelift_flag_enable(