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helper/stub: write ready byte late
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Hopefully eliminates spurious failures.

Signed-off-by: Ophestra <cat@gensokyo.uk>
This commit is contained in:
Ophestra 2025-10-13 01:55:44 +09:00
parent 763ab27e09
commit a14b6535a6
Signed by: cat
SSH Key Fingerprint: SHA256:gQ67O0enBZ7UdZypgtspB2FDM1g3GVw8nX0XSdcFw8Q
1 changed files with 24 additions and 28 deletions
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18
helper/stub.go
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@ -68,15 +68,8 @@ func genericStub(argsFile, statFile *os.File) {
} }
} }
// simulate status pipe behaviour
if statFile != nil { if statFile != nil {
if _, err := statFile.Write([]byte{'x'}); err != nil { // simulate status pipe behaviour
panic("cannot write to status pipe: " + err.Error())
}
done := make(chan struct{})
go func() {
// wait for status pipe close
var epoll int var epoll int
if fd, err := syscall.EpollCreate1(0); err != nil { if fd, err := syscall.EpollCreate1(0); err != nil {
panic("cannot open epoll fd: " + err.Error()) panic("cannot open epoll fd: " + err.Error())
@ -91,6 +84,12 @@ func genericStub(argsFile, statFile *os.File) {
if err := syscall.EpollCtl(epoll, syscall.EPOLL_CTL_ADD, int(statFile.Fd()), &syscall.EpollEvent{}); err != nil { if err := syscall.EpollCtl(epoll, syscall.EPOLL_CTL_ADD, int(statFile.Fd()), &syscall.EpollEvent{}); err != nil {
panic("cannot add status pipe to epoll: " + err.Error()) panic("cannot add status pipe to epoll: " + err.Error())
} }
if _, err := statFile.Write([]byte{'x'}); err != nil {
panic("cannot write to status pipe: " + err.Error())
}
// wait for status pipe close
events := make([]syscall.EpollEvent, 1) events := make([]syscall.EpollEvent, 1)
if _, err := syscall.EpollWait(epoll, events, -1); err != nil { if _, err := syscall.EpollWait(epoll, events, -1); err != nil {
panic("cannot poll status pipe: " + err.Error()) panic("cannot poll status pipe: " + err.Error())
@ -99,8 +98,5 @@ func genericStub(argsFile, statFile *os.File) {
panic(strconv.Itoa(int(events[0].Events))) panic(strconv.Itoa(int(events[0].Events)))
} }
close(done)
}()
<-done
} }
} }