/*
 * Copyright 1999-2020 Alibaba Group Holding Ltd.
 *
 * Licensed 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.
 */

package mem

import (
	"context"

	"github.com/shirou/gopsutil/mem"
)

func getAvailableAndTotal(ctx context.Context, burnMemMode string, includeBufferCache bool) (int64, int64, error) {
	// no limit
	virtualMemory, err := mem.VirtualMemory()
	if err != nil {
		return 0, 0, err
	}
	total := int64(virtualMemory.Total)
	available := int64(virtualMemory.Free)
	if burnMemMode == "ram" && !includeBufferCache {
		available = available + int64(virtualMemory.Buffers+virtualMemory.Cached)
	}
	return total, available, nil
}
