/*
* 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.
*/
package org.apache.cassandra.utils;
import com.sun.jna.Pointer;
/**
* An interface to implement for using OS specific native methods.
* @see NativeLibrary
*/
interface NativeLibraryWrapper
{
/**
* Checks if the library has been successfully linked.
* @return {@code true} if the library has been successfully linked, {@code false} otherwise.
*/
boolean isAvailable();
int callMlockall(int flags) throws UnsatisfiedLinkError, RuntimeException;
int callMunlockall() throws UnsatisfiedLinkError, RuntimeException;
int callFcntl(int fd, int command, long flags) throws UnsatisfiedLinkError, RuntimeException;
int callPosixFadvise(int fd, long offset, int len, int flag) throws UnsatisfiedLinkError, RuntimeException;
int callOpen(String path, int flags) throws UnsatisfiedLinkError, RuntimeException;
int callFsync(int fd) throws UnsatisfiedLinkError, RuntimeException;
int callClose(int fd) throws UnsatisfiedLinkError, RuntimeException;
Pointer callStrerror(int errnum) throws UnsatisfiedLinkError, RuntimeException;
long callGetpid() throws UnsatisfiedLinkError, RuntimeException;
}