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| author | user <user@clank> | 2026-07-16 11:15:12 +0200 |
|---|---|---|
| committer | user <user@clank> | 2026-07-16 11:15:12 +0200 |
| commit | bb4f468b73c8a888bec1e5b2ba7f1575ab7f8456 (patch) | |
| tree | 24e681e7ca242f3041f6a3effa197445ada451fb /c/libc.s | |
| parent | kill + ps: implement SYS_KILL (pid 1 immortal) and a ps tool (diff) | |
| download | gbos-bb4f468b73c8a888bec1e5b2ba7f1575ab7f8456.tar.gz gbos-bb4f468b73c8a888bec1e5b2ba7f1575ab7f8456.tar.xz gbos-bb4f468b73c8a888bec1e5b2ba7f1575ab7f8456.zip | |
jobs: background execution (&), non-blocking reap, spin demo
- sys_reap: nohang reap of a finished zombie child (-> pid or 0).
- shell: 'cmd &' launches in the background (prints [pid], no wait); reaps
finished jobs at the prompt ([pid done]). Foreground now waits for its own
child specifically (loops wait(), reporting bg completions meanwhile) so kill
reports the right pid.
- spin: a process that yields forever - a target for ps/kill.
- verified: spin &; ps shows it; kill <pid> removes just that one; immortal
init; self-finishing bg worker reaped with [pid done].
Diffstat (limited to 'c/libc.s')
| -rw-r--r-- | c/libc.s | 12 |
1 files changed, 12 insertions, 0 deletions
@@ -187,3 +187,15 @@ _progname: ld c, #21 ; SYS_PROGNAME rst #0x30 ret + + .globl _yield, _reap + ;; void yield(void) +_yield: + ld c, #11 ; SYS_YIELD + rst #0x30 + ret + ;; unsigned char reap(void) -> A (reaped pid, or 0) +_reap: + ld c, #22 ; SYS_REAP + rst #0x30 + ret |