--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/os/windows/semaphore_windows.cpp Thu Jan 11 18:42:36 2018 -0500
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "semaphore_windows.hpp"
+#include "utilities/debug.hpp"
+
+#include <windows.h>
+#include <errno.h>
+
+WindowsSemaphore::WindowsSemaphore(uint value) {
+ _semaphore = ::CreateSemaphore(NULL, value, LONG_MAX, NULL);
+
+ guarantee(_semaphore != NULL, "CreateSemaphore failed with error code: %lu", GetLastError());
+}
+
+WindowsSemaphore::~WindowsSemaphore() {
+ ::CloseHandle(_semaphore);
+}
+
+void WindowsSemaphore::signal(uint count) {
+ if (count > 0) {
+ BOOL ret = ::ReleaseSemaphore(_semaphore, count, NULL);
+
+ assert(ret != 0, "ReleaseSemaphore failed with error code: %lu", GetLastError());
+ }
+}
+
+void WindowsSemaphore::wait() {
+ DWORD ret = ::WaitForSingleObject(_semaphore, INFINITE);
+ assert(ret != WAIT_FAILED, "WaitForSingleObject failed with error code: %lu", GetLastError());
+ assert(ret == WAIT_OBJECT_0, "WaitForSingleObject failed with return value: %lu", ret);
+}
+
+bool WindowsSemaphore::trywait() {
+ DWORD ret = ::WaitForSingleObject(_semaphore, 0);
+ assert(ret != WAIT_FAILED, "WaitForSingleObject failed with error code: %lu", GetLastError());
+ return ret == WAIT_OBJECT_0;
+}