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Clear TID before doing futex_wake when exiting a POSIX thread

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jellllly420
2024-10-18 11:41:21 +08:00
committed by Tate, Hongliang Tian
parent b8eff00fb7
commit 3c857d746e
1 changed files with 1 additions and 1 deletions
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2
kernel/src/process/posix_thread/exit.rs
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@ -24,11 +24,11 @@ pub fn do_exit(thread: &Thread, posix_thread: &PosixThread, term_status: TermSta
let mut clear_ctid = posix_thread.clear_child_tid().lock(); let mut clear_ctid = posix_thread.clear_child_tid().lock();
// If clear_ctid !=0 ,do a futex wake and write zero to the clear_ctid addr. // If clear_ctid !=0 ,do a futex wake and write zero to the clear_ctid addr.
if *clear_ctid != 0 { if *clear_ctid != 0 {
futex_wake(*clear_ctid, 1, None)?;
// FIXME: the correct write length? // FIXME: the correct write length?
if let Err(e) = get_current_userspace!().write_val(*clear_ctid, &0u32) { if let Err(e) = get_current_userspace!().write_val(*clear_ctid, &0u32) {
debug!("Ignore error during exit process: {:?}", e); debug!("Ignore error during exit process: {:?}", e);
} }
futex_wake(*clear_ctid, 1, None)?;
*clear_ctid = 0; *clear_ctid = 0;
} }
// exit the robust list: walk the robust list; mark futex words as dead and do futex wake // exit the robust list: walk the robust list; mark futex words as dead and do futex wake