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Differential D58385

pwait: Test the new -r option
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Authored by des on Tue, Jul 21, 8:08 PM.

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kib
kevans
markj

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rGe115066370dc: pwait: Test the new -r option

Summary

Test that pwait without -r reports a process as soon as it terminates,
while pwait with -r does not report it until it has been reaped.

MFC after: 1 week
Sponsored by: Klara, Inc.
Sponsored by: NetApp, Inc.

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rG FreeBSD src repository

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Event Timeline

des created this revision.Tue, Jul 21, 8:08 PM

Herald added a subscriber: imp. · View Herald TranscriptTue, Jul 21, 8:08 PM

des requested review of this revision.Tue, Jul 21, 8:08 PM

Harbormaster completed remote builds in B74989: Diff 182418.Tue, Jul 21, 8:08 PM

des added a parent revision: D58314: pwait: Optionally wait until process is reaped.Tue, Jul 21, 8:09 PM

des added a parent revision: D58386: pwait: Add a SIGINFO handler.Tue, Jul 21, 8:19 PM

des retitled this revision from pwait: Test that pwait does not report zombies to pwait: Test the new -r option.Wed, Jul 22, 8:16 AM

des edited the summary of this revision. (Show Details)

new behavior is now optional, test both variants

Harbormaster completed remote builds in B74997: Diff 182439.Wed, Jul 22, 8:18 AM

rename test

Harbormaster completed remote builds in B75001: Diff 182443.Wed, Jul 22, 8:33 AM

kib added inline comments.Wed, Jul 22, 11:44 PM

bin/pwait/tests/pwait_reap.c
126	Why not using posix_spawn() there?
136	You are not waiting for the termination there, wait_zero(false) only checks for termination and asserts if not. As the consequence, the test is racy, since nothing guarantees that the target has exited when waitpid() is called.

des added inline comments.Thu, Jul 23, 6:20 AM

bin/pwait/tests/pwait_reap.c
126	What would be the advantage?
136	I think you're confusing `WNOWAIT` with `WNOHANG`.

des added a reviewer: Klara.Thu, Jul 23, 5:50 PM

kib added inline comments.Thu, Jul 23, 11:32 PM

bin/pwait/tests/pwait_reap.c
126	That the used API is specifically designed for the task at hand.
136	No, I do not. Re-read what I wrote: wait_zero(false) may assert falsely.

des added inline comments.Fri, Jul 24, 10:00 AM

bin/pwait/tests/pwait_reap.c
136	No. It will block until the target terminates. It will fail if interrupted, but I don't consider that a problem.

tolerate EINTR

Harbormaster completed remote builds in B75098: Diff 182621.Fri, Jul 24, 4:28 PM

kib accepted this revision.Fri, Jul 24, 10:02 PM

This revision is now accepted and ready to land.Fri, Jul 24, 10:02 PM

Closed by commit rGe115066370dc: pwait: Test the new -r option (authored by des). · Explain WhyMon, Jul 27, 10:17 AM

This revision was automatically updated to reflect the committed changes.

des added a commit: rGe115066370dc: pwait: Test the new -r option.

markj added inline comments.Mon, Jul 27, 1:13 PM

bin/pwait/tests/pwait_reap.c
169	Shouldn't this be `pwait_reap_test(false)`?

des added inline comments.Mon, Jul 27, 6:49 PM

bin/pwait/tests/pwait_reap.c
169	You're right, will fix.

Revision Contents
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Path

Size

bin/

pwait/

tests/

1 line

188 lines

Diff 182771

bin/pwait/tests/Makefile

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bin/pwait/tests/pwait_reap.c

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