Module Name: src
Committed By: kamil
Date: Tue Jun 4 11:54:04 UTC 2019
Modified Files:
src/sys/kern: kern_lwp.c kern_sig.c
Log Message:
Stop trying to inform debugger about events from an exiting child
Do not emit signals to parent for if a process is demising:
- fork/vfork/similar
- lwp created/exited
- exec
- syscall entry/exit
With these changes Go applications can be traced without a clash under
a debugger, at least without deadlocking always. The culprit reason was
an attempt to inform a debugger in the middle of exit1() call about
a dying LWP. Go applications perform exit(2) without collecting threads
first. Verified with GDB and picotrace-based utilities like sigtracer.
PR kern/53120
PR port-arm/51677
PR bin/54060
PR bin/49662
PR kern/52548
To generate a diff of this commit:
cvs rdiff -u -r1.201 -r1.202 src/sys/kern/kern_lwp.c
cvs rdiff -u -r1.358 -r1.359 src/sys/kern/kern_sig.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
