initial code repo

[stor4nfv.git] / src / ceph / src / librbd / AsyncRequest.cc

diff --git a/src/ceph/src/librbd/AsyncRequest.cc b/src/ceph/src/librbd/AsyncRequest.cc
new file mode 100644 (file)
index 0000000..a1e4202
--- /dev/null
+++ b/src/ceph/src/librbd/AsyncRequest.cc
@@ -0,0 +1,71 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+#include "librbd/AsyncRequest.h"
+#include "librbd/ImageCtx.h"
+#include "librbd/Utils.h"
+#include "common/WorkQueue.h"
+
+namespace librbd
+{
+
+template <typename T>
+AsyncRequest<T>::AsyncRequest(T &image_ctx, Context *on_finish)
+  : m_image_ctx(image_ctx), m_on_finish(on_finish), m_canceled(false),
+    m_xlist_item(this) {
+  assert(m_on_finish != NULL);
+  start_request();
+}
+
+template <typename T>
+AsyncRequest<T>::~AsyncRequest() {
+}
+
+template <typename T>
+void AsyncRequest<T>::async_complete(int r) {
+  m_image_ctx.op_work_queue->queue(create_callback_context(), r);
+}
+
+template <typename T>
+librados::AioCompletion *AsyncRequest<T>::create_callback_completion() {
+  return util::create_rados_callback(this);
+}
+
+template <typename T>
+Context *AsyncRequest<T>::create_callback_context() {
+  return util::create_context_callback(this);
+}
+
+template <typename T>
+Context *AsyncRequest<T>::create_async_callback_context() {
+  return util::create_context_callback<AsyncRequest<T>,
+                                       &AsyncRequest<T>::async_complete>(this);
+}
+
+template <typename T>
+void AsyncRequest<T>::start_request() {
+  Mutex::Locker async_ops_locker(m_image_ctx.async_ops_lock);
+  m_image_ctx.async_requests.push_back(&m_xlist_item);
+}
+
+template <typename T>
+void AsyncRequest<T>::finish_request() {
+  decltype(m_image_ctx.async_requests_waiters) waiters;
+  {
+    Mutex::Locker async_ops_locker(m_image_ctx.async_ops_lock);
+    assert(m_xlist_item.remove_myself());
+
+    if (m_image_ctx.async_requests.empty()) {
+      waiters = std::move(m_image_ctx.async_requests_waiters);
+    }
+  }
+
+  for (auto ctx : waiters) {
+    ctx->complete(0);
+  }
+}
+
+} // namespace librbd
+
+#ifndef TEST_F
+template class librbd::AsyncRequest<librbd::ImageCtx>;
+#endif