initial code repo

[stor4nfv.git] / src / ceph / src / msg / async / EventKqueue.h

diff --git a/src/ceph/src/msg/async/EventKqueue.h b/src/ceph/src/msg/async/EventKqueue.h
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+++ b/src/ceph/src/msg/async/EventKqueue.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2014 UnitedStack <haomai@unitedstack.com>
+ *
+ * Author: Haomai Wang <haomaiwang@gmail.com>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#ifndef CEPH_MSG_EVENTKQUEUE_H
+#define CEPH_MSG_EVENTKQUEUE_H
+
+#include <sys/types.h>
+#include <sys/event.h>
+#include <unistd.h>
+
+#include "Event.h"
+
+class KqueueDriver : public EventDriver {
+  int kqfd;
+  pthread_t mythread;
+  struct kevent *res_events;
+  CephContext *cct;
+  int size;
+
+  // Keep what we set on the kqfd
+  struct SaveEvent{
+    int fd;
+    int mask;
+  };
+  struct SaveEvent *sav_events;
+  int sav_max;
+  int restore_events();
+  int test_kqfd();
+  int test_thread_change(const char* funcname);
+
+ public:
+  explicit KqueueDriver(CephContext *c): kqfd(-1), res_events(NULL), cct(c), 
+               size(0), sav_max(0) {}
+  virtual ~KqueueDriver() {
+    if (kqfd != -1)
+      close(kqfd);
+
+    if (res_events)
+      free(res_events);
+    size = 0;
+    if (sav_events)
+      free(sav_events);
+    sav_max = 0;
+  }
+
+  int init(EventCenter *c, int nevent) override;
+  int add_event(int fd, int cur_mask, int add_mask) override;
+  int del_event(int fd, int cur_mask, int del_mask) override;
+  int resize_events(int newsize) override;
+  int event_wait(vector<FiredFileEvent> &fired_events,
+                struct timeval *tp) override;
+};
+
+#endif