7a9389330e
gcc/: * gcc.c (default_compilers): Add entry for ".go". * common.opt: Add -static-libgo as a driver option. * doc/install.texi (Configuration): Mention libgo as an option for --enable-shared. Mention go as an option for --enable-languages. * doc/invoke.texi (Overall Options): Mention .go as a file name suffix. Mention go as a -x option. * doc/frontends.texi (G++ and GCC): Mention Go as a supported language. * doc/sourcebuild.texi (Top Level): Mention libgo. * doc/standards.texi (Standards): Add section on Go language. Move references for other languages into their own section. * doc/contrib.texi (Contributors): Mention that I contributed the Go frontend. gcc/testsuite/: * lib/go.exp: New file. * lib/go-dg.exp: New file. * lib/go-torture.exp: New file. * lib/target-supports.exp (check_compile): Match // Go. From-SVN: r167407
42 lines
947 B
C
42 lines
947 B
C
/* go-chan-cap.c -- the cap function applied to a channel.
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Copyright 2009 The Go Authors. All rights reserved.
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Use of this source code is governed by a BSD-style
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license that can be found in the LICENSE file. */
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#include <stddef.h>
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#include "go-assert.h"
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#include "channel.h"
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/* Return the cap function applied to a channel--the size of the
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buffer. This could be done inline but I'm doing it as a function
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for now to make it easy to change the channel structure. */
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size_t
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__go_chan_cap (struct __go_channel *channel)
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{
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int i;
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size_t ret;
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if (channel == NULL)
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return 0;
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i = pthread_mutex_lock (&channel->lock);
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__go_assert (i == 0);
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if (channel->num_entries == 0)
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ret = 0;
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else
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{
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/* One slot is always unused. We added 1 when we created the
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channel. */
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ret = channel->num_entries - 1;
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}
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i = pthread_mutex_unlock (&channel->lock);
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__go_assert (i == 0);
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return ret;
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}
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