pyroscope 0.5.3

Pyroscope Profiler Agent for continuous profiling of Rust, Python and Ruby applications.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85

#[cfg(target_os = "linux")]
mod tests {
    use pyroscope::timer::epoll::{
        epoll_create1, epoll_ctl, epoll_wait, timerfd_create, timerfd_settime,
    };

    #[test]
    fn test_timerfd_create() {
        let timer_fd = timerfd_create(libc::CLOCK_REALTIME, libc::TFD_NONBLOCK).unwrap();
        assert!(timer_fd > 0);
    }

    #[test]
    fn test_timerfd_settime() {
        let mut new_value = libc::itimerspec {
            it_interval: libc::timespec {
                tv_sec: 10,
                tv_nsec: 0,
            },
            it_value: libc::timespec {
                tv_sec: 0,
                tv_nsec: 0,
            },
        };

        let mut old_value = libc::itimerspec {
            it_interval: libc::timespec {
                tv_sec: 0,
                tv_nsec: 0,
            },
            it_value: libc::timespec {
                tv_sec: 0,
                tv_nsec: 0,
            },
        };

        let timer_fd = timerfd_create(libc::CLOCK_REALTIME, libc::TFD_NONBLOCK).unwrap();
        let void = timerfd_settime(
            timer_fd,
            libc::TFD_TIMER_ABSTIME,
            &mut new_value,
            &mut old_value,
        )
        .unwrap();
        assert!(void == ());
    }

    #[test]
    fn test_epoll_create1() {
        let epoll_fd = epoll_create1(0).unwrap();
        assert!(epoll_fd > 0);
    }

    #[test]
    fn test_epoll_ctl() {
        let mut event = libc::epoll_event {
            events: libc::EPOLLIN as u32,
            u64: 1,
        };

        let epoll_fd = epoll_create1(0).unwrap();
        let timer_fd = timerfd_create(libc::CLOCK_REALTIME, libc::TFD_NONBLOCK).unwrap();
        let void = epoll_ctl(epoll_fd, libc::EPOLL_CTL_ADD, timer_fd, &mut event).unwrap();
        assert!(void == ());
    }

    #[test]
    fn test_epoll_wait() {
        let mut event = libc::epoll_event {
            events: libc::EPOLLIN as u32,
            u64: 1,
        };

        let epoll_fd = epoll_create1(0).unwrap();
        let timer_fd = timerfd_create(libc::CLOCK_REALTIME, libc::TFD_NONBLOCK).unwrap();
        epoll_ctl(epoll_fd, libc::EPOLL_CTL_ADD, timer_fd, &mut event).unwrap();

        let mut events = vec![libc::epoll_event { events: 0, u64: 0 }];

        // Expire in 1ms
        let void = unsafe { epoll_wait(epoll_fd, events.as_mut_ptr(), 1, 1).unwrap() };

        assert!(void == ());
    }
}