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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#pragma once
28
29#include <AK/HashMap.h>
30#include <AK/String.h>
31#include <unistd.h>
32
33namespace Core {
34
35struct ThreadStatistics {
36 int tid;
37 unsigned times_scheduled;
38 unsigned ticks;
39 unsigned syscall_count;
40 unsigned inode_faults;
41 unsigned zero_faults;
42 unsigned cow_faults;
43 unsigned unix_socket_read_bytes;
44 unsigned unix_socket_write_bytes;
45 unsigned ipv4_socket_read_bytes;
46 unsigned ipv4_socket_write_bytes;
47 unsigned file_read_bytes;
48 unsigned file_write_bytes;
49 String state;
50 u32 priority;
51 u32 effective_priority;
52 String name;
53};
54
55struct ProcessStatistics {
56 // Keep this in sync with /proc/all.
57 // From the kernel side:
58 pid_t pid;
59 unsigned pgid;
60 unsigned pgp;
61 unsigned sid;
62 uid_t uid;
63 gid_t gid;
64 pid_t ppid;
65 unsigned nfds;
66 String name;
67 String tty;
68 String pledge;
69 String veil;
70 size_t amount_virtual;
71 size_t amount_resident;
72 size_t amount_shared;
73 size_t amount_dirty_private;
74 size_t amount_clean_inode;
75 size_t amount_purgeable_volatile;
76 size_t amount_purgeable_nonvolatile;
77 int icon_id;
78
79 Vector<Core::ThreadStatistics> threads;
80
81 // synthetic
82 String username;
83};
84
85class ProcessStatisticsReader {
86public:
87 static HashMap<pid_t, Core::ProcessStatistics> get_all();
88
89private:
90 static String username_from_uid(uid_t);
91 static HashMap<uid_t, String> s_usernames;
92};
93
94}