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runtime: always set *received in chanrecv.

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Also fix comment.

The only caller of chanrecv initializes the value to false, so
this patch makes no difference at present.  But it seems like
the right thing to do.

R=rsc
CC=golang-dev
https://golang.org/cl/4312053
This commit is contained in:
Ian Lance Taylor 2011-03-25 10:36:22 -07:00
parent f6d0e81179
commit 7c616b3809
1 changed files with 4 additions and 2 deletions
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6
src/pkg/runtime/chan.c
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@ -366,6 +366,8 @@ asynch:
if(selected != nil) {
runtime·unlock(c);
*selected = false;
if(received != nil)
*received = false;
return;
}
sg = allocsg(c);
@ -521,7 +523,7 @@ runtime·selectnbrecv(byte *v, Hchan *c, bool selected)
// compiler implements
//
// select {
// case v = <-c:
// case v, ok = <-c:
// ... foo
// default:
// ... bar
@ -529,7 +531,7 @@ runtime·selectnbrecv(byte *v, Hchan *c, bool selected)
//
// as
//
// if c != nil && selectnbrecv(&v, c) {
// if c != nil && selectnbrecv2(&v, &ok, c) {
// ... foo
// } else {
// ... bar