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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#include <LibCore/ArgsParser.h>
28#include <serenity.h>
29#include <stdio.h>
30#include <stdlib.h>
31#include <string.h>
32
33int main(int argc, char** argv)
34{
35 Core::ArgsParser args_parser;
36
37 const char* pid_argument = nullptr;
38 const char* cmd_argument = nullptr;
39 bool enable = false;
40 bool disable = false;
41
42 args_parser.add_option(pid_argument, "Target PID", nullptr, 'p', "PID");
43 args_parser.add_option(enable, "Enable", nullptr, 'e');
44 args_parser.add_option(disable, "Disable", nullptr, 'd');
45 args_parser.add_option(cmd_argument, "Command", nullptr, 'c', "command");
46
47 args_parser.parse(argc, argv);
48
49 if (!pid_argument && !cmd_argument) {
50 args_parser.print_usage(stdout, argv[0]);
51 return 0;
52 }
53
54 if (pid_argument) {
55 if (!(enable ^ disable)) {
56 fprintf(stderr, "-p <PID> requires -e xor -d.\n");
57 return 1;
58 }
59
60 pid_t pid = atoi(pid_argument);
61
62 if (enable) {
63 if (profiling_enable(pid) < 0) {
64 perror("profiling_enable");
65 return 1;
66 }
67 return 0;
68 }
69
70 if (profiling_disable(pid) < 0) {
71 perror("profiling_disable");
72 return 1;
73 }
74
75 return 0;
76 }
77
78 auto cmd_parts = String(cmd_argument).split(' ');
79 Vector<const char*> cmd_argv;
80
81 for (auto& part : cmd_parts)
82 cmd_argv.append(part.characters());
83
84 cmd_argv.append(nullptr);
85
86 dbg() << "Enabling profiling for PID " << getpid();
87 profiling_enable(getpid());
88 if (execvp(cmd_argv[0], const_cast<char**>(cmd_argv.data())) < 0) {
89 perror("execv");
90 return 1;
91 }
92
93 return 0;
94}