summaryrefslogtreecommitdiffstats
path: root/src/librbd/watcher/Notifier.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/librbd/watcher/Notifier.h')
-rw-r--r--src/librbd/watcher/Notifier.h64
1 files changed, 64 insertions, 0 deletions
diff --git a/src/librbd/watcher/Notifier.h b/src/librbd/watcher/Notifier.h
new file mode 100644
index 000000000..79546b505
--- /dev/null
+++ b/src/librbd/watcher/Notifier.h
@@ -0,0 +1,64 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_WATCHER_NOTIFIER_H
+#define CEPH_LIBRBD_WATCHER_NOTIFIER_H
+
+#include "include/int_types.h"
+#include "include/buffer_fwd.h"
+#include "include/Context.h"
+#include "include/rados/librados.hpp"
+#include "common/ceph_mutex.h"
+#include <list>
+
+namespace librbd {
+
+namespace asio { struct ContextWQ; }
+
+namespace watcher {
+
+struct NotifyResponse;
+
+class Notifier {
+public:
+ static const uint64_t NOTIFY_TIMEOUT;
+
+ Notifier(asio::ContextWQ *work_queue, librados::IoCtx &ioctx,
+ const std::string &oid);
+ ~Notifier();
+
+ void flush(Context *on_finish);
+ void notify(bufferlist &bl, NotifyResponse *response, Context *on_finish);
+
+private:
+ typedef std::list<Context*> Contexts;
+
+ struct C_AioNotify : public Context {
+ Notifier *notifier;
+ NotifyResponse *response;
+ Context *on_finish;
+ bufferlist out_bl;
+
+ C_AioNotify(Notifier *notifier, NotifyResponse *response,
+ Context *on_finish);
+
+ void finish(int r) override;
+ };
+
+ asio::ContextWQ *m_work_queue;
+ librados::IoCtx &m_ioctx;
+ CephContext *m_cct;
+ std::string m_oid;
+
+ ceph::mutex m_aio_notify_lock;
+ size_t m_pending_aio_notifies = 0;
+ Contexts m_aio_notify_flush_ctxs;
+
+ void handle_notify(int r, Context *on_finish);
+
+};
+
+} // namespace watcher
+} // namespace librbd
+
+#endif // CEPH_LIBRBD_WATCHER_NOTIFIER_H