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/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/String.h>
#include <LibCore/File.h>
#include <unistd.h>
namespace Core {
struct ThreadStatistics {
pid_t tid;
unsigned times_scheduled;
u64 time_user;
u64 time_kernel;
unsigned syscall_count;
unsigned inode_faults;
unsigned zero_faults;
unsigned cow_faults;
unsigned unix_socket_read_bytes;
unsigned unix_socket_write_bytes;
unsigned ipv4_socket_read_bytes;
unsigned ipv4_socket_write_bytes;
unsigned file_read_bytes;
unsigned file_write_bytes;
String state;
u32 cpu;
u32 priority;
String name;
};
struct ProcessStatistics {
// Keep this in sync with /sys/kernel/processes.
// From the kernel side:
pid_t pid;
pid_t pgid;
pid_t pgp;
pid_t sid;
uid_t uid;
gid_t gid;
pid_t ppid;
unsigned nfds;
bool kernel;
String name;
String executable;
String tty;
String pledge;
String veil;
size_t amount_virtual;
size_t amount_resident;
size_t amount_shared;
size_t amount_dirty_private;
size_t amount_clean_inode;
size_t amount_purgeable_volatile;
size_t amount_purgeable_nonvolatile;
Vector<Core::ThreadStatistics> threads;
// synthetic
String username;
};
struct AllProcessesStatistics {
Vector<ProcessStatistics> processes;
u64 total_time_scheduled;
u64 total_time_scheduled_kernel;
};
class ProcessStatisticsReader {
public:
static Optional<AllProcessesStatistics> get_all(RefPtr<Core::File>&, bool include_usernames = true);
static Optional<AllProcessesStatistics> get_all(bool include_usernames = true);
private:
static String username_from_uid(uid_t);
static HashMap<uid_t, String> s_usernames;
};
}
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