1 files changed, 114 insertions, 0 deletions
diff --git a/src/components/utils/src/lock_win.cc b/src/components/utils/src/lock_win.cc
new file mode 100644
index 0000000000..811a89abf1
--- /dev/null
+++ b/src/components/utils/src/lock_win.cc
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2015-2016, Ford Motor Company
+ * 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 the Ford Motor Company 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 HOLDER 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.
+ */
+#if defined(OS_WINDOWS)
+
+#include "utils/lock.h"
+#include "utils/logger.h"
+
+namespace sync_primitives {
+
+CREATE_LOGGERPTR_GLOBAL(logger_, "Utils")
+
+Lock::Lock()
+#ifndef NDEBUG
+    : lock_taken_(0)
+    , is_mutex_recursive_(false)
+#endif  // NDEBUG
+{
+  Init(false);
+}
+
+Lock::Lock(bool is_recursive)
+#ifndef NDEBUG
+    : lock_taken_(0)
+    , is_mutex_recursive_(is_recursive)
+#endif  // NDEBUG
+{
+  Init(is_recursive);
+}
+
+Lock::~Lock() {
+#ifndef NDEBUG
+  if (lock_taken_ > 0) {
+    LOGGER_ERROR(logger_, "Destroying non-released mutex " << &mutex_);
+  }
+#endif
+  DeleteCriticalSection(&mutex_);
+}
+
+void Lock::Acquire() {
+  EnterCriticalSection(&mutex_);
+  AssertFreeAndMarkTaken();
+}
+
+void Lock::Release() {
+  AssertTakenAndMarkFree();
+  LeaveCriticalSection(&mutex_);
+}
+
+bool Lock::Try() {
+  if ((lock_taken_ > 0) && !is_mutex_recursive_) {
+    return false;
+  }
+  if (!TryEnterCriticalSection(&mutex_)) {
+    return false;
+  }
+#ifndef NDEBUG
+  lock_taken_++;
+#endif
+  return true;
+}
+
+#ifndef NDEBUG
+void Lock::AssertFreeAndMarkTaken() {
+  if ((lock_taken_ > 0) && !is_mutex_recursive_) {
+    LOGGER_ERROR(logger_, "Locking already taken not recursive mutex");
+    NOTREACHED();
+  }
+  lock_taken_++;
+}
+void Lock::AssertTakenAndMarkFree() {
+  if (lock_taken_ == 0) {
+    LOGGER_ERROR(logger_, "Unlocking a mutex that is not taken");
+    NOTREACHED();
+  }
+  lock_taken_--;
+}
+#endif
+
+void Lock::Init(bool is_recursive) {
+  InitializeCriticalSection(&mutex_);
+}
+
+}  // namespace sync_primitives
+
+#endif  // OS_WINDOWS