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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-21 11:54:28 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-21 11:54:28 +0000
commite6918187568dbd01842d8d1d2c808ce16a894239 (patch)
tree64f88b554b444a49f656b6c656111a145cbbaa28 /src/tools/rbd_ggate/Server.h
parentInitial commit. (diff)
downloadceph-e6918187568dbd01842d8d1d2c808ce16a894239.tar.xz
ceph-e6918187568dbd01842d8d1d2c808ce16a894239.zip
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/tools/rbd_ggate/Server.h')
-rw-r--r--src/tools/rbd_ggate/Server.h88
1 files changed, 88 insertions, 0 deletions
diff --git a/src/tools/rbd_ggate/Server.h b/src/tools/rbd_ggate/Server.h
new file mode 100644
index 000000000..bb31b89f7
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+++ b/src/tools/rbd_ggate/Server.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_RBD_GGATE_SERVER_H
+#define CEPH_RBD_GGATE_SERVER_H
+
+#include "include/rbd/librbd.hpp"
+#include "include/xlist.h"
+#include "common/ceph_mutex.h"
+#include "common/Thread.h"
+
+namespace rbd {
+namespace ggate {
+
+class Driver;
+struct Request;
+
+class Server {
+public:
+ Server(Driver *drv, librbd::Image& image);
+
+ void run();
+
+private:
+ struct IOContext {
+ xlist<IOContext*>::item item;
+ Server *server;
+ Request *req = nullptr;
+
+ IOContext(Server *server) : item(this), server(server) {
+ }
+ };
+
+ class ThreadHelper : public Thread {
+ public:
+ typedef void (Server::*entry_func)();
+
+ ThreadHelper(Server *server, entry_func func)
+ : server(server), func(func) {
+ }
+
+ protected:
+ virtual void* entry() {
+ (server->*func)();
+ return nullptr;
+ }
+
+ private:
+ Server *server;
+ entry_func func;
+ };
+
+ friend std::ostream &operator<<(std::ostream &os, const IOContext &ctx);
+
+ Driver *m_drv;
+ librbd::Image &m_image;
+
+ mutable ceph::mutex m_lock =
+ ceph::make_mutex("rbd::ggate::Server::m_lock");
+ ceph::condition_variable m_cond;
+ bool m_stopping = false;
+ ThreadHelper m_reader_thread, m_writer_thread;
+ xlist<IOContext*> m_io_pending;
+ xlist<IOContext*> m_io_finished;
+
+ static void aio_callback(librbd::completion_t cb, void *arg);
+
+ int start();
+ void stop();
+
+ void reader_entry();
+ void writer_entry();
+
+ void io_start(IOContext *ctx);
+ void io_finish(IOContext *ctx);
+
+ IOContext *wait_io_finish();
+ void wait_clean();
+
+ void handle_aio(IOContext *ctx, int r);
+};
+
+std::ostream &operator<<(std::ostream &os, const Server::IOContext &ctx);
+
+} // namespace ggate
+} // namespace rbd
+
+#endif // CEPH_RBD_GGATE_SERVER_H