From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- libgo/runtime/go-closed.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 libgo/runtime/go-closed.c (limited to 'libgo/runtime/go-closed.c') diff --git a/libgo/runtime/go-closed.c b/libgo/runtime/go-closed.c new file mode 100644 index 000000000..bfa9cd6f9 --- /dev/null +++ b/libgo/runtime/go-closed.c @@ -0,0 +1,34 @@ +/* go-closed.c -- the builtin closed function. + + Copyright 2009 The Go Authors. All rights reserved. + Use of this source code is governed by a BSD-style + license that can be found in the LICENSE file. */ + +#include "go-assert.h" +#include "channel.h" + +/* Return whether a channel is closed. We only return true after at + least one nil value has been read from the channel. */ + +_Bool +__go_builtin_closed (struct __go_channel *channel) +{ + int i; + _Bool ret; + + i = pthread_mutex_lock (&channel->lock); + __go_assert (i == 0); + + while (channel->selected_for_receive) + { + i = pthread_cond_wait (&channel->cond, &channel->lock); + __go_assert (i == 0); + } + + ret = channel->saw_close; + + i = pthread_mutex_unlock (&channel->lock); + __go_assert (i == 0); + + return ret; +} -- cgit v1.2.3