Function get_stack_trace_depth

src/native.rs:324–342

(jni_env: *mut JNIEnv, this: jobject)

}

unsafe fn get_stack_trace_depth(jni_env: *mut JNIEnv, this: jobject) -> Result<jint, String> {
    static mut STACK_DEPTH_METH: jmethodID = 0 as jmethodID;
    static ONCE: Once = ONCE_INIT;
    ONCE.call_once(|| {
        let throwable_class = get_throwable_class(jni_env).unwrap_or(ptr::null_mut());
        if !throwable_class.is_null() {
            // We swallow exceptions in here on purpose
            let meth_name_str = CString::new("getStackTraceDepth").unwrap();
            let meth_sig_str = CString::new("()I").unwrap();
            STACK_DEPTH_METH = (**jni_env).GetMethodID.unwrap()(jni_env,
                                                                throwable_class,
                                                                meth_name_str.as_ptr(),
                                                                meth_sig_str.as_ptr());
            let _ = util::result_or_jni_ex((), jni_env);
        }
    });
    if STACK_DEPTH_METH.is_null() { return Result::Err("No getStackTraceDepth method".to_string()); }
    return util::result_or_jni_ex((**jni_env).CallIntMethod.unwrap()(jni_env, this, STACK_DEPTH_METH), jni_env)
}

#[no_mangle]
#[allow(non_snake_case)]