Satisfying requested changes
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7ad8e78a34
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@ -209,7 +209,7 @@ where
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.long("no-shell"))
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.arg(Arg::with_name("once").short("1").hidden(true))
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.arg(Arg::with_name("watch-when-idle")
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.help("Ignores commands while the process is still running")
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.help("Ignore events while the process is still running")
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.short("W")
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.long("watch-when-idle"));
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60
src/run.rs
60
src/run.rs
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@ -194,7 +194,7 @@ impl ExecHandler {
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let guard = self
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.child_process
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.read()
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.expect("poisoned lock in signal_process");
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.expect("poisoned lock in has_running_process");
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if let Some(ref _child) = *guard {
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return true;
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@ -228,54 +228,46 @@ impl Handler for ExecHandler {
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// 3. Just send a specified signal to the child, do nothing more
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// 4. Make sure the previous run was ended, then run the command again
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//
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let scenario = (self.args.restart, self.signal.is_some());
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let scenario = (
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self.args.restart,
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self.signal.is_some(),
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self.args.watch_when_idle,
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);
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let running_process = self.has_running_process();
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match scenario {
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// Custom restart behaviour (--restart was given, and --signal specified):
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// Send specified signal to the child, wait for it to exit, then run the command again
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(true, true) => {
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if self.args.watch_when_idle {
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if !running_process {
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self.spawn(ops)?;
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}
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} else {
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signal_process(&self.child_process, self.signal, true);
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// SIGHUP scenario: --signal was given, but --restart was not
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// Just send a signal (e.g. SIGHUP) to the child, do nothing more
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(false, true, _) => signal_process(&self.child_process, self.signal, false),
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// Spawn a process when there are no running processes in the background
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(_, _, true) => {
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if !running_process {
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self.spawn(ops)?;
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}
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}
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// Custom restart behaviour (--restart was given, and --signal specified):
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// Send specified signal to the child, wait for it to exit, then run the command again
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(true, true, false) => {
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signal_process(&self.child_process, self.signal, true);
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self.spawn(ops)?;
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}
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// Default restart behaviour (--restart was given, but --signal wasn't specified):
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// Send SIGTERM to the child, wait for it to exit, then run the command again
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(true, false) => {
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(true, false, false) => {
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let sigterm = signal::new(Some("SIGTERM".into()));
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if self.args.watch_when_idle {
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if !running_process {
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self.spawn(ops)?;
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}
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} else {
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signal_process(&self.child_process, sigterm, true);
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self.spawn(ops)?;
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}
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signal_process(&self.child_process, sigterm, true);
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self.spawn(ops)?;
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}
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// SIGHUP scenario: --signal was given, but --restart was not
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// Just send a signal (e.g. SIGHUP) to the child, do nothing more
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(false, true) => signal_process(&self.child_process, self.signal, false),
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// Default behaviour (neither --signal nor --restart specified):
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// Make sure the previous run was ended, then run the command again
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(false, false) => {
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if self.args.watch_when_idle {
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if !running_process {
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self.spawn(ops)?;
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}
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} else {
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signal_process(&self.child_process, None, true);
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self.spawn(ops)?;
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}
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(false, false, false) => {
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signal_process(&self.child_process, None, true);
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self.spawn(ops)?;
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}
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}
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