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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_JOURNAL_UTILS_H
#define CEPH_JOURNAL_UTILS_H
#include "include/int_types.h"
#include "include/Context.h"
#include "include/rados/librados.hpp"
#include <string>
namespace journal {
namespace utils {
namespace detail {
template <typename M>
struct C_AsyncCallback : public Context {
M journal_metadata;
Context *on_finish;
C_AsyncCallback(M journal_metadata, Context *on_finish)
: journal_metadata(journal_metadata), on_finish(on_finish) {
}
void finish(int r) override {
journal_metadata->queue(on_finish, r);
}
};
} // namespace detail
template <typename T, void(T::*MF)(int)>
void rados_state_callback(rados_completion_t c, void *arg) {
T *obj = reinterpret_cast<T*>(arg);
int r = rados_aio_get_return_value(c);
(obj->*MF)(r);
}
std::string get_object_name(const std::string &prefix, uint64_t number);
std::string unique_lock_name(const std::string &name, void *address);
void rados_ctx_callback(rados_completion_t c, void *arg);
template <typename M>
Context *create_async_context_callback(M journal_metadata, Context *on_finish) {
// use async callback to acquire a clean lock context
return new detail::C_AsyncCallback<M>(journal_metadata, on_finish);
}
} // namespace utils
} // namespace journal
#endif // CEPH_JOURNAL_UTILS_H
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