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use std;
use std::io;
use std::process::{Command, ExitStatus, Stdio};
use hyperfine::timer::get_cpu_timer;
/// Used to indicate the result of running a command
#[derive(Debug, Copy, Clone)]
pub struct ExecuteResult {
/// The amount of user time the process used
pub user_time: f64,
/// The amount of cpu time the process used
pub system_time: f64,
/// The exit status of the process
pub status: ExitStatus,
}
/// Execute the given command and return a timing summary
#[cfg(windows)]
pub fn execute_and_time(stdout: Stdio, stderr: Stdio, command: &str, shell: &str) -> io::Result<ExecuteResult> {
let mut child = run_shell_command(stdout, stderr, command, shell)?;
let cpu_timer = get_cpu_timer(&child);
let status = child.wait()?;
let (user_time, system_time) = cpu_timer.stop();
Ok(ExecuteResult {
user_time,
system_time,
status,
})
}
/// Execute the given command and return a timing summary
#[cfg(not(windows))]
pub fn execute_and_time(stdout: Stdio, stderr: Stdio, command: &str, shell: &str) -> io::Result<ExecuteResult> {
let cpu_timer = get_cpu_timer();
let status = run_shell_command(stdout, stderr, command, shell)?;
let (user_time, system_time) = cpu_timer.stop();
Ok(ExecuteResult {
user_time,
system_time,
status,
})
}
/// Run a standard shell command using `sh -c`
#[cfg(not(windows))]
fn run_shell_command(
stdout: Stdio,
stderr: Stdio,
command: &str,
shell: &str,
) -> io::Result<std::process::ExitStatus> {
Command::new(shell)
.arg("-c")
.arg(command)
.stdin(Stdio::null())
.stdout(stdout)
.stderr(stderr)
.status()
}
/// Run a Windows shell command using `cmd.exe /C`
#[cfg(windows)]
fn run_shell_command(
stdout: Stdio,
stderr: Stdio,
command: &str,
shell: &str,
) -> io::Result<std::process::Child> {
Command::new(shell)
.arg("/C")
.arg(command)
.stdin(Stdio::null())
.stdout(stdout)
.stderr(stderr)
.spawn()
}
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