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runtime: do not explicitly exit on ctrl handler

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The default ctrl+c handler should process exits in situations where it
makes sense, like console apps, but not in situations where it doesn't,
like libraries or services. Therefore, we should remove the exit(2) so
that the default handler is used for this. This also uses the more
proper windows exit code of STATUS_CONTROL_C_EXIT, with the base case
handler installed by KernelBase.dll. In particular, this helps in the
case of services, which previously would terminate when receiving
shutdown signals, instead of passing them onward to the service program.
In this CL, contrary to CL 244959, we do not need to special case
services with expensive detection algorithms, or rely on hard-coded
library/archive flags.

Fixes #40167.
Fixes #40074.

Change-Id: I9bf6ed6f65cefeff754d270aa33fa4df8d0b451f
Reviewed-on: https://go-review.googlesource.com/c/go/+/243597
Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld 2020-07-14 01:41:03 -06:00
parent 69d34e2c69
commit c0dded04f7
1 changed files with 0 additions and 5 deletions
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5
src/runtime/os_windows.go
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@ -1010,11 +1010,6 @@ func ctrlhandler1(_type uint32) uint32 {
if sigsend(s) {
return 1
}
if !islibrary && !isarchive {
// Only exit the program if we don't have a DLL.
// See https://golang.org/issues/35965.
exit(2) // SIGINT, SIGTERM, etc
}
return 0
}