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fix the problem when subprcess clone again

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This commit is contained in:
guochao 2023-11-03 10:09:56 +08:00
parent 56dd40cd1c
commit e1ba2f7141
1 changed files with 6 additions and 3 deletions
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9
src/main.rs
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@ -74,7 +74,9 @@ fn main() -> anyhow::Result<()> {
loop { loop {
log::debug!("parent: waitpid..."); log::debug!("parent: waitpid...");
match waitpid(child, None)? { let waitstatus = waitpid(child, None)?;
match waitstatus {
WaitStatus::Exited(pid, ret) => { WaitStatus::Exited(pid, ret) => {
log::info!("child {pid} exited with return code {ret}"); log::info!("child {pid} exited with return code {ret}");
break; break;
@ -96,7 +98,9 @@ fn main() -> anyhow::Result<()> {
} }
_ => {} _ => {}
} }
nix::sys::ptrace::cont(child, None)?; if let Some(pid) = waitstatus.pid() {
nix::sys::ptrace::cont(pid, None)?;
}
} }
return Ok(()); return Ok(());
} }
@ -171,4 +175,3 @@ fn main() -> anyhow::Result<()> {
panic!("unreachable"); panic!("unreachable");
} }