From b4eae244826a0fb8907ef50c8ef9a38da40b719d Mon Sep 17 00:00:00 2001 From: Dennis Kobert Date: Sat, 8 Mar 2025 21:06:20 +0100 Subject: Vendor perf event --- perf-event/examples/insns-for-pid.rs | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 perf-event/examples/insns-for-pid.rs (limited to 'perf-event/examples/insns-for-pid.rs') diff --git a/perf-event/examples/insns-for-pid.rs b/perf-event/examples/insns-for-pid.rs new file mode 100644 index 0000000..3fc73ae --- /dev/null +++ b/perf-event/examples/insns-for-pid.rs @@ -0,0 +1,27 @@ +use libc::pid_t; +use perf_event::events::Hardware; +use perf_event::Builder; +use std::thread::sleep; +use std::time::Duration; + +fn main() -> std::io::Result<()> { + let pid: pid_t = std::env::args() + .nth(1) + .expect("Usage: insns-for-pid PID") + .parse() + .expect("Usage: insns-for-pid PID"); + + let mut insns = Builder::new() + .observe_pid(pid) + .kind(Hardware::BRANCH_INSTRUCTIONS) + .build()?; + + // Count instructions in PID for five seconds. + insns.enable()?; + sleep(Duration::from_secs(5)); + insns.disable()?; + + println!("instructions in last five seconds: {}", insns.read()?); + + Ok(()) +} -- cgit v1.3.1