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runtime: does not report duplicate errors in netpoll

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Prevents storm of error messages if something goes wrong.
In the case of issue 5073 the epoll fd was closed by the test.
Update #5073.

R=golang-dev, r, rsc
CC=golang-dev
https://golang.org/cl/7966043
This commit is contained in:
Dmitriy Vyukov 2013-03-26 20:25:43 +04:00
parent 9d97b55d38
commit 94599ea745
2 changed files with 10 additions and 4 deletions
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7
src/pkg/runtime/netpoll_epoll.c
View File

@ -57,6 +57,7 @@ runtime·netpollclose(int32 fd)
G*
runtime·netpoll(bool block)
{
static int32 lasterr;
EpollEvent events[128], *ev;
int32 n, i, waitms, mode;
G *gp;
@ -69,8 +70,10 @@ runtime·netpoll(bool block)
retry:
n = runtime·epollwait(epfd, events, nelem(events), waitms);
if(n < 0) {
if(n != -EINTR)
runtime·printf("epollwait failed with %d\n", -n);
if(n != -EINTR && n != lasterr) {
lasterr = n;
runtime·printf("runtime: epollwait on fd %d failed with %d\n", epfd, -n);
}
goto retry;
}
gp = nil;

7
src/pkg/runtime/netpoll_kqueue.c
View File

@ -71,6 +71,7 @@ runtime·netpollclose(int32 fd)
G*
runtime·netpoll(bool block)
{
static int32 lasterr;
Kevent events[64], *ev;
Timespec ts, *tp;
int32 n, i;
@ -88,8 +89,10 @@ runtime·netpoll(bool block)
retry:
n = runtime·kevent(kq, nil, 0, events, nelem(events), tp);
if(n < 0) {
if(n != -EINTR)
runtime·printf("kqueue failed with %d\n", -n);
if(n != -EINTR && n != lasterr) {
lasterr = n;
runtime·printf("runtime: kevent on fd %d failed with %d\n", kq, -n);
}
goto retry;
}
for(i = 0; i < n; i++) {