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
75 lines
1.5 KiB
C
75 lines
1.5 KiB
C
/* go-note.c -- implement notesleep, notewakeup and noteclear.
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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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/* A note is a one-time notification. noteclear clears the note.
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notesleep waits for a call to notewakeup. notewakeup wakes up
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every thread waiting on the note. */
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#include "go-assert.h"
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#include "runtime.h"
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/* We use a single global lock and condition variable. It would be
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better to use a futex on Linux. */
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static pthread_mutex_t note_lock = PTHREAD_MUTEX_INITIALIZER;
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static pthread_cond_t note_cond = PTHREAD_COND_INITIALIZER;
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/* noteclear is called before any calls to notesleep or
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notewakeup. */
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void
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noteclear (Note* n)
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{
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int32 i;
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i = pthread_mutex_lock (¬e_lock);
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__go_assert (i == 0);
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n->woken = 0;
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i = pthread_mutex_unlock (¬e_lock);
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__go_assert (i == 0);
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}
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/* Wait until notewakeup is called. */
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void
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notesleep (Note* n)
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{
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int32 i;
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i = pthread_mutex_lock (¬e_lock);
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__go_assert (i == 0);
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while (!n->woken)
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{
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i = pthread_cond_wait (¬e_cond, ¬e_lock);
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__go_assert (i == 0);
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}
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i = pthread_mutex_unlock (¬e_lock);
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__go_assert (i == 0);
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}
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/* Wake up every thread sleeping on the note. */
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void
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notewakeup (Note *n)
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{
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int32 i;
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i = pthread_mutex_lock (¬e_lock);
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__go_assert (i == 0);
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n->woken = 1;
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i = pthread_cond_broadcast (¬e_cond);
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__go_assert (i == 0);
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i = pthread_mutex_unlock (¬e_lock);
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__go_assert (i == 0);
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}
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