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another try at clearing

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channel recv data.

R=rsc
CC=golang-dev
https://golang.org/cl/896041
This commit is contained in:
Ken Thompson 2010-04-06 17:33:43 -07:00
parent dec248c665
commit b57afc2f83
1 changed files with 6 additions and 9 deletions
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9
src/pkg/runtime/chan.c
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@ -781,21 +781,19 @@ loop:
sel, c, cas, cas->send, o);
if(!cas->send) {
if(cas->u.elemp != nil) {
if(cas->u.elemp != nil)
c->elemalg->copy(c->elemsize, cas->u.elemp, sg->elem);
c->elemalg->copy(c->elemsize, sg->elem, nil);
}
}
freesg(c, sg);
goto retc;
asyncrecv:
// can receive from buffer
if(cas->u.elemp != nil) {
if(cas->u.elemp != nil)
c->elemalg->copy(c->elemsize, cas->u.elemp, c->recvdataq->elem);
c->elemalg->copy(c->elemsize, c->recvdataq->elem, nil);
}
c->recvdataq = c->recvdataq->link;
c->qcount--;
sg = dequeue(&c->sendq, c);
@ -824,10 +822,9 @@ syncrecv:
// can receive from sleeping sender (sg)
if(debug)
printf("syncrecv: sel=%p c=%p o=%d\n", sel, c, o);
if(cas->u.elemp != nil) {
if(cas->u.elemp != nil)
c->elemalg->copy(c->elemsize, cas->u.elemp, sg->elem);
c->elemalg->copy(c->elemsize, sg->elem, nil);
}
gp = sg->g;
gp->param = sg;
ready(gp);