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-rw-r--r--include/erebos/service.h2
-rw-r--r--include/erebos/state.h5
-rw-r--r--include/erebos/storage.h8
-rw-r--r--include/erebos/sync.h32
4 files changed, 44 insertions, 3 deletions
diff --git a/include/erebos/service.h b/include/erebos/service.h
index cec5ea0..ba06495 100644
--- a/include/erebos/service.h
+++ b/include/erebos/service.h
@@ -32,6 +32,8 @@ public:
virtual UUID uuid() const = 0;
virtual void handle(Context &) = 0;
+
+ virtual void serverStarted(const class Server &);
};
}
diff --git a/include/erebos/state.h b/include/erebos/state.h
index 543e03c..b1567b0 100644
--- a/include/erebos/state.h
+++ b/include/erebos/state.h
@@ -29,6 +29,9 @@ public:
template<class T> LocalState shared(const Storage & st, const T & x)
{ return updateShared(T::sharedTypeId, x.store(st)); }
+ vector<Ref> sharedRefs() const;
+ LocalState sharedRefAdd(const Ref &) const;
+
private:
vector<Ref> lookupShared(UUID) const;
LocalState updateShared(UUID, const vector<Ref> &) const;
@@ -47,7 +50,7 @@ template<class T>
LocalState LocalState::shared(const vector<Stored<T>> & v) const
{
vector<Ref> refs;
- for (const auto x : v)
+ for (const auto & x : v)
refs.push_back(x.ref());
return updateShared(T::sharedTypeId, refs);
}
diff --git a/include/erebos/storage.h b/include/erebos/storage.h
index 75b8139..7ec73ab 100644
--- a/include/erebos/storage.h
+++ b/include/erebos/storage.h
@@ -507,12 +507,16 @@ class WatchedHead : public Head<T>
friend class Head<T>;
WatchedHead(const Head<T> & h, int watcherId):
Head<T>(h), watcherId(watcherId) {}
+ int watcherId;
+
+public:
WatchedHead(WatchedHead<T> && h):
Head<T>(h), watcherId(h.watcherId)
{ h.watcherId = -1; }
- int watcherId;
-public:
+ WatchedHead<T> & operator=(WatchedHead<T> && h)
+ { watcherId = h.watcherId; h.watcherId = -1; return *this; }
+
WatchedHead<T> & operator=(const Head<T> & h) {
if (Head<T>::id() != h.id())
throw std::runtime_error("WatchedHead ID mismatch");
diff --git a/include/erebos/sync.h b/include/erebos/sync.h
new file mode 100644
index 0000000..0b9ed9a
--- /dev/null
+++ b/include/erebos/sync.h
@@ -0,0 +1,32 @@
+#pragma once
+
+#include <erebos/service.h>
+#include <erebos/state.h>
+#include <erebos/storage.h>
+
+#include <optional>
+#include <mutex>
+
+namespace erebos {
+
+class SyncService : public Service
+{
+public:
+ SyncService();
+ virtual ~SyncService();
+
+ UUID uuid() const override;
+ void handle(Context &) override;
+
+ void serverStarted(const class Server &) override;
+
+private:
+ void peerWatcher(size_t, const class Peer *);
+ void localStateWatcher(const Head<LocalState> &);
+
+ const class Server * server;
+ std::mutex headMutex;
+ std::optional<WatchedHead<LocalState>> watchedHead;
+};
+
+}