wasm/wasm-sharding-js/src/internal_module/os.rs

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

use core::arch;

use crate::quickjs_sys::*;
use crate::EventLoop;

fn memory_size(_ctx: &mut Context, _this_val: JsValue, _argv: &[JsValue]) -> JsValue {
    JsValue::Int(arch::wasm32::memory_size::<0>() as i32)
}

struct OS;

impl ModuleInit for OS {
    fn init_module(ctx: &mut Context, m: &mut JsModuleDef) {
        let f = ctx.wrap_function("_memorySize", memory_size);
        m.add_export("_memorySize\0", f.into());
    }
}

pub fn init_module(ctx: &mut Context) {
    ctx.register_module(
        "_node:os\0", 
        OS, 
        &[
            "_memorySize\0"
        ]
    )
}