add core::Mutex inheriting data::Wrap<nf7::Mutex>

This reverts commit 01236d4aef783b68e34de95558b3e1a398b3a1fb.

core/CMakeLists.txt

@@ -25,6 +25,7 @@ target_sources(nf7_core
     uv/parallelism.hh
     clock.hh
     logger.hh
+    mutex.hh
     version.hh
 )
 

core/mutex.hh

@@ -0,0 +1,17 @@
+// No copyright
+#pragma once
+
+#include "iface/common/mutex.hh"
+#include "iface/data/wrap.hh"
+
+namespace nf7::core {
+
+class Mutex : public data::Wrap<nf7::Mutex> {
+ public:
+  Mutex() : Wrap("nf7::core::Mutex", mtx_) { }
+
+ private:
+  nf7::Mutex mtx_;
+};
+
+}  // namespace nf7::core

iface/CMakeLists.txt

@@ -21,6 +21,7 @@ target_sources(nf7_iface
     common/task_context.hh
     common/value.hh
     data/interface.hh
+    data/wrap.hh
     subsys/concurrency.hh
     subsys/interface.hh
     subsys/logger.hh

iface/common/mutex.hh

@@ -20,10 +20,10 @@ class Mutex final {
   Mutex();
   ~Mutex() noexcept;
 
-  Mutex(const Mutex&) = delete;
-  Mutex(Mutex&&) = delete;
-  Mutex& operator=(const Mutex&) = delete;
-  Mutex& operator=(Mutex&&) = delete;
+  Mutex(const Mutex&) = default;
+  Mutex(Mutex&&) = default;
+  Mutex& operator=(const Mutex&) = default;
+  Mutex& operator=(Mutex&&) = default;
 
  public:
   Future<SharedToken> Lock() noexcept;

iface/data/wrap.hh

@@ -0,0 +1,21 @@
+// No copyright
+#pragma once
+
+#include "iface/data/interface.hh"
+
+namespace nf7::data {
+
+template <typename T>
+class Wrap : public Interface {
+ protected:
+  Wrap(const char* name, T& data) noexcept
+      : Interface(name), data_(data) { }
+
+ public:
+  T& data() const noexcept { return data_; }
+
+ private:
+  T& data_;
+};
+
+}  // namespace nf7::data

iface/file.hh

@@ -6,20 +6,6 @@
 
 namespace nf7 {
 
-class File : public Container<data::Interface> {
- public:
-  File() = default;
-
- public:
-  Mutex& mtx() const noexcept { return mtx_; }
-
- public:
-  using Container<data::Interface>::Get;
-  using Container<data::Interface>::GetOr;
-  using Container<data::Interface>::installed;
-
- private:
-  mutable Mutex mtx_;
-};
+using File = Container<data::Interface>;
 
 }  // namespace nf7