mprocs 0.9.2

TUI for running multiple processes
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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155

use std::fmt::Debug;

use tokio::sync::mpsc::UnboundedSender;

use crate::error::ResultLogger;
use crate::kernel::kernel_message::SharedVt;
use crate::kernel::proc::ProcId;
use crate::proc_log_config::{LogConfig, LogMode};
use crate::process::process::Process as _;
use crate::process::process_spec::ProcessSpec;
use crate::process::NativeProcess;
use crate::term_types::winsize::Winsize;

use super::msg::ProcEvent;
use super::Size;

pub struct Inst {
  pub vt: SharedVt,
  pub log_writer: Option<tokio::fs::File>,

  pub pid: u32,
  pub process: NativeProcess,
  pub exit_code: Option<u32>,
  pub stdout_eof: bool,
}

impl Debug for Inst {
  fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
    f.debug_struct("Inst")
      .field("pid", &self.pid)
      .field("exited", &self.exit_code)
      .field("stdout_eof", &self.stdout_eof)
      .finish()
  }
}

impl Inst {
  pub async fn spawn(
    id: ProcId,
    name: &str,
    spec: &ProcessSpec,
    tx: UnboundedSender<ProcEvent>,
    size: &Size,
    scrollback_len: usize,
    log: Option<&LogConfig>,
  ) -> anyhow::Result<Self> {
    let vt = crate::vt100::Parser::new(size.height, size.width, scrollback_len);
    let vt = SharedVt::new(vt);

    tx.send(ProcEvent::SetVt(Some(vt.clone()))).log_ignore();

    #[cfg(unix)]
    let process = {
      crate::process::unix_process::UnixProcess::spawn(
        id,
        spec,
        crate::term_types::winsize::Winsize {
          x: size.width,
          y: size.height,
          x_px: 0,
          y_px: 0,
        },
        {
          let tx = tx.clone();
          Box::new(move |wait_status| {
            let exit_code = wait_status.exit_status().unwrap_or(212);
            let _result = tx.send(ProcEvent::Exited(exit_code as u32));
          })
        },
      )?
    };
    #[cfg(unix)]
    let pid: i32 = process.pid.as_raw_nonzero().into();

    #[cfg(windows)]
    let process = {
      use anyhow::Context as _;

      crate::process::win_process::WinProcess::spawn(
        id,
        spec,
        crate::term_types::winsize::Winsize {
          x: size.width,
          y: size.height,
          x_px: 0,
          y_px: 0,
        },
        {
          let tx = tx.clone();
          Box::new(move |exit_code| {
            let exit_code = exit_code.unwrap_or(213);
            let _result = tx.send(ProcEvent::Exited(exit_code as u32));
          })
        },
      )
      .context("WinProcess::spawn")?
    };
    #[cfg(windows)]
    let pid: i32 = process.pid;

    let log_file = log.and_then(|log| log.file_path(name, id.0, pid as u32));
    let log_writer = match log_file {
      Some(path) => {
        // Create parent directories if needed
        if let Some(parent) = path.parent() {
          std::fs::create_dir_all(parent).log_ignore();
        }
        let append = log.is_some_and(|log| log.mode() == LogMode::Append);
        let mut options = tokio::fs::OpenOptions::new();
        options.create(true).write(true).append(append);
        if !append {
          options.truncate(true);
        }
        options
          .open(&path)
          .await
          .map_err(|e| log::warn!("Failed to open log file {:?}: {}", path, e))
          .ok()
      }
      None => None,
    };

    tx.send(ProcEvent::Started).log_ignore();

    let inst = Inst {
      vt,
      log_writer,

      process,
      pid: pid as u32,
      exit_code: None,
      stdout_eof: false,
    };
    Ok(inst)
  }

  pub fn resize(&mut self, size: &Size) {
    let rows = size.height;
    let cols = size.width;

    self
      .process
      .resize(Winsize {
        x: size.width,
        y: size.height,
        x_px: 0,
        y_px: 0,
      })
      .log_ignore();

    if let Ok(mut vt) = self.vt.write() {
      vt.set_size(rows, cols);
    }
  }
}