Port LockImpl, Lock, and ConditionVariable to pthreads-supporting platforms.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@567 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 60 insertions, 0 deletions

diff --git a/base/lock_impl_posix.cc b/base/lock_impl_posix.cc
new file mode 100644
index 0000000..aceb414
--- /dev/null
+++ b/base/lock_impl_posix.cc
@@ -0,0 +1,60 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "base/lock_impl.h"
+
+#include <errno.h>
+
+#include "base/logging.h"
+
+LockImpl::LockImpl() {
+  int rv = pthread_mutex_init(&os_lock_, NULL);
+  DCHECK(rv == 0);
+}
+
+LockImpl::~LockImpl() {
+  int rv = pthread_mutex_destroy(&os_lock_);
+  DCHECK(rv == 0);
+}
+
+bool LockImpl::Try() {
+  int rv = pthread_mutex_trylock(&os_lock_);
+  DCHECK(rv == 0 || rv == EBUSY);
+  return rv == 0;
+}
+
+void LockImpl::Lock() {
+  int rv = pthread_mutex_lock(&os_lock_);
+  DCHECK(rv == 0);
+}
+
+void LockImpl::Unlock() {
+  int rv = pthread_mutex_unlock(&os_lock_);
+  DCHECK(rv == 0);
+}