使用wepoll iocp模拟epoll api,实现在windows下支持iocp (#1871)

3rdpart/wepoll/sys/epoll.cpp

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+/*
+ * Copyright (c) 2016 The ZLToolKit project authors. All Rights Reserved.
+ *
+ * This file is part of ZLToolKit(https://github.com/ZLMediaKit/ZLToolKit).
+ *
+ * Use of this source code is governed by MIT license that can be found in the
+ * LICENSE file in the root of the source tree. All contributing project authors
+ * may be found in the AUTHORS file in the root of the source tree.
+ */
+#include "epoll.h"
+
+std::map<int, HANDLE> toolkit::s_wepollHandleMap;
+int toolkit::s_handleIndex = 0;
+std::mutex toolkit::s_handleMtx;

3rdpart/wepoll/sys/epoll.h

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+/*
+ * Copyright (c) 2016 The ZLToolKit project authors. All Rights Reserved.
+ *
+ * This file is part of ZLToolKit(https://github.com/ZLMediaKit/ZLToolKit).
+ *
+ * Use of this source code is governed by MIT license that can be found in the
+ * LICENSE file in the root of the source tree. All contributing project authors
+ * may be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef ZLMEDIAKIT_EPOLL_H
+#define ZLMEDIAKIT_EPOLL_H
+#include "wepoll.h"
+#include <map>
+#include <mutex>
+
+// 屏蔽 EPOLLET
+#define EPOLLET 0
+
+namespace toolkit {
+// 索引handle
+extern std::map<int, HANDLE> s_wepollHandleMap;
+extern int s_handleIndex;
+extern std::mutex s_handleMtx;
+// 屏蔽epoll_create epoll_ctl epoll_wait参数差异
+inline int epoll_create(int size) {
+    HANDLE handle = ::epoll_create(size);
+    if (!handle) {
+        return -1;
+    }
+    {
+        std::lock_guard<std::mutex> lck(s_handleMtx);
+        int idx = ++s_handleIndex;
+        s_wepollHandleMap[idx] = handle;
+        return idx;
+    }
+}
+
+inline int epoll_ctl(int ephnd, int op, SOCKET sock, struct epoll_event *ev) {
+    HANDLE handle;
+    {
+        std::lock_guard<std::mutex> lck(s_handleMtx);
+        handle = s_wepollHandleMap[ephnd];
+    }
+    return ::epoll_ctl(handle, op, sock, ev);
+}
+
+inline int epoll_wait(int ephnd, struct epoll_event *events, int maxevents, int timeout) {
+    HANDLE handle;
+    {
+        std::lock_guard<std::mutex> lck(s_handleMtx);
+        handle = s_wepollHandleMap[ephnd];
+    }
+    return ::epoll_wait(handle, events, maxevents, timeout);
+}
+
+} // namespace toolkit
+
+#endif // ZLMEDIAKIT_EPOLL_H