server: un-inline various large functions

Save approximiately 70k (ARM32) of size from the generated library of
libphosphor-dbus.so by un-inlining various large functions.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ie238ca7807960bf1577dcbb272226f197de84b01
diff --git a/src/server/interface.cpp b/src/server/interface.cpp
new file mode 100644
index 0000000..a72c656
--- /dev/null
+++ b/src/server/interface.cpp
@@ -0,0 +1,47 @@
+#include <sdbusplus/server/interface.hpp>
+
+namespace sdbusplus
+{
+
+namespace server
+{
+
+namespace interface
+{
+
+interface::interface(sdbusplus::bus::bus& bus, const char* path,
+                     const char* interf,
+                     const sdbusplus::vtable::vtable_t* vtable, void* context) :
+    _bus(bus.get(), bus.getInterface()),
+    _path(path), _interf(interf), _slot(nullptr), _intf(bus.getInterface()),
+    _interface_added(false)
+{
+    sd_bus_slot* slot = nullptr;
+    int r = _intf->sd_bus_add_object_vtable(_bus.get(), &slot, _path.c_str(),
+                                            _interf.c_str(), vtable, context);
+    if (r < 0)
+    {
+        throw exception::SdBusError(-r, "sd_bus_add_object_vtable");
+    }
+
+    _slot = decltype(_slot){slot};
+}
+
+interface::~interface()
+{
+    emit_removed();
+}
+
+void interface::property_changed(const char* property)
+{
+    std::array<const char*, 2> values = {property, nullptr};
+
+    // Note: Converting to use _strv version, could also mock two pointer
+    // use-case explicitly.
+    _intf->sd_bus_emit_properties_changed_strv(_bus.get(), _path.c_str(),
+                                               _interf.c_str(), values.data());
+}
+
+} // namespace interface
+} // namespace server
+} // namespace sdbusplus
diff --git a/src/server/transaction.cpp b/src/server/transaction.cpp
index 2a9697f..52f9043 100644
--- a/src/server/transaction.cpp
+++ b/src/server/transaction.cpp
@@ -13,6 +13,87 @@
 thread_local uint64_t id = 0;
 
 } // namespace details
+
+uint64_t get_id()
+{
+    // If the transaction id has not been initialized, generate one.
+    if (!details::id)
+    {
+        details::Transaction t;
+        details::id = std::hash<details::Transaction>{}(t);
+    }
+    return details::id;
+}
+
+void set_id(uint64_t value)
+{
+    details::id = value;
+}
+
+void set_id(message::message& msg)
+{
+    auto tbus = msg.get_bus();
+    auto t = Transaction(tbus, msg);
+    set_id(std::hash<Transaction>{}(t));
+}
+
 } // namespace transaction
 } // namespace server
 } // namespace sdbusplus
+
+namespace std
+{
+
+size_t hash<sdbusplus::bus::bus>::operator()(sdbusplus::bus::bus& b) const
+{
+    auto name = b.get_unique_name();
+    return std::hash<std::string>{}(name);
+}
+
+size_t hash<sdbusplus::message::message>::operator()(
+    sdbusplus::message::message& m) const
+{
+    switch (m.get_type())
+    {
+        // Reply messages will always embed the cookie of the original
+        // message in a separate location. We want to use this cookie
+        // to correlate messages as one transaction.
+        case SD_BUS_MESSAGE_METHOD_RETURN:
+        case SD_BUS_MESSAGE_METHOD_ERROR:
+            return std::hash<uint64_t>{}(m.get_reply_cookie());
+        // Method calls will have the cookie in the header when sealed.
+        // Since we are on the server side that should always be the case.
+        case SD_BUS_MESSAGE_METHOD_CALL:
+            return std::hash<uint64_t>{}(m.get_cookie());
+        // Outgoing signals don't have a cookie so we need to use
+        // something else as an id. Just use a monotonic unique one.
+        case SD_BUS_MESSAGE_SIGNAL:
+            return std::hash<uint64_t>{}(
+                std::chrono::steady_clock::now().time_since_epoch().count());
+        default:
+            throw std::runtime_error("hash message: Unknown message type");
+    }
+}
+
+size_t hash<sdbusplus::server::transaction::Transaction>::operator()(
+    sdbusplus::server::transaction::Transaction const& t) const
+{
+    auto hash1 = std::hash<sdbusplus::bus::bus>{}(t.bus);
+    auto hash2 = std::hash<sdbusplus::message::message>{}(t.msg);
+
+    // boost::hash_combine() algorithm.
+    return static_cast<size_t>(
+        hash1 ^ (hash2 + 0x9e3779b9 + (hash1 << 6) + (hash1 >> 2)));
+}
+
+size_t hash<sdbusplus::server::transaction::details::Transaction>::operator()(
+    sdbusplus::server::transaction::details::Transaction const& t) const
+{
+    auto hash1 = std::hash<int>{}(t.time);
+    auto hash2 = std::hash<std::thread::id>{}(t.thread);
+
+    // boost::hash_combine() algorithm.
+    return static_cast<size_t>(
+        hash1 ^ (hash2 + 0x9e3779b9 + (hash1 << 6) + (hash1 >> 2)));
+}
+} // namespace std