net.openhft.posix.ProcMaps Maven / Gradle / Ivy

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package net.openhft.posix;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.function.Predicate;
import java.util.stream.Collectors;

public class ProcMaps {
    private final List mappingList = new ArrayList<>();

    private ProcMaps(Object proc) throws IOException {
        try (BufferedReader br = new BufferedReader(new FileReader("/proc/" + proc + "/maps"))) {
            for (String line; (line = br.readLine()) != null; ) {
                mappingList.add(new Mapping(line));
            }
        }
    }

    public static ProcMaps forSelf() throws IOException {
        return new ProcMaps("self");
    }

    public static ProcMaps forPID(int pid) throws IOException {
        return new ProcMaps(pid);
    }

    public List list() {
        return mappingList;
    }

    public Mapping findFirst(Predicate test) {
        return mappingList.stream().filter(test).findFirst().get();
    }

    public List findAll(Predicate test) {
        return mappingList.stream().filter(test).collect(Collectors.toList());
    }

}