Initial commit

Change-Id: I4bf1707bd3dfeadf2c17b0a7daff372b1925ebbd

runtime/os_interface/windows/os_library.cpp

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+/*
+ * Copyright (c) 2017, Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "runtime/os_interface/os_library.h"
+#include "os_library.h"
+#include "DriverStore.h"
+
+namespace OCLRT {
+
+OsLibrary *OsLibrary::load(const std::string &name) {
+    Windows::OsLibrary *ptr = new Windows::OsLibrary(name);
+
+    if (!ptr->isLoaded()) {
+        delete ptr;
+        return nullptr;
+    }
+    return ptr;
+}
+
+namespace Windows {
+
+OsLibrary::OsLibrary(const std::string &name) {
+    if (name.empty()) {
+        this->handle = GetModuleHandleA(nullptr);
+    } else {
+        this->handle = LoadDependency(name.c_str());
+        if (this->handle == nullptr) {
+            this->handle = ::LoadLibraryA(name.c_str());
+        }
+    }
+}
+
+OsLibrary::~OsLibrary() {
+    if ((this->handle != nullptr) && (this->handle != GetModuleHandleA(nullptr))) {
+        ::FreeLibrary(this->handle);
+        this->handle = nullptr;
+    }
+}
+
+bool OsLibrary::isLoaded() {
+    return this->handle != nullptr;
+}
+
+void *OsLibrary::getProcAddress(const std::string &procName) {
+    return ::GetProcAddress(this->handle, procName.c_str());
+}
+}
+}