From 644494f7cf27cb8dbe89a50885f57a7266a06e63 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Wed, 26 Oct 2016 07:25:50 +0200
Subject: compat/util: split out run-in-thread{,-async}

---
 compat/run-in-thread.hpp | 85 ++++++++++++++++++++++++++++++++++++++++++++++
 compat/util.hpp          | 87 +-----------------------------------------------
 2 files changed, 86 insertions(+), 86 deletions(-)
 create mode 100644 compat/run-in-thread.hpp

diff --git a/compat/run-in-thread.hpp b/compat/run-in-thread.hpp
new file mode 100644
index 00000000..d377f625
--- /dev/null
+++ b/compat/run-in-thread.hpp
@@ -0,0 +1,85 @@
+#pragma once
+
+#include <QObject>
+
+#include <thread>
+#include <condition_variable>
+#include <utility>
+
+namespace detail {
+
+template<typename t>
+struct run_in_thread_traits
+{
+    using type = t;
+    using ret_type = t&&;
+    static inline void assign(t& lvalue, t&& rvalue) { lvalue = rvalue; }
+    static inline ret_type&& pass(ret_type&& val) { return std::move(val); }
+    template<typename F> static ret_type call(F& fun) { return std::move(fun()); }
+};
+
+template<>
+struct run_in_thread_traits<void>
+{
+    using type = unsigned char;
+    using ret_type = void;
+    static inline void assign(unsigned char&, unsigned char&&) {}
+    static inline void pass(type&&) {}
+    template<typename F> static type&& call(F& fun) { fun(); return std::move(type(0)); }
+};
+
+}
+
+template<typename F>
+auto run_in_thread_sync(QObject* obj, F&& fun)
+    -> typename detail::run_in_thread_traits<decltype(std::forward<F>(fun)())>::ret_type
+{
+    using lock_guard = std::unique_lock<std::mutex>;
+
+    std::mutex mtx;
+    lock_guard guard(mtx);
+    std::condition_variable cvar;
+
+    std::thread::id waiting_thread = std::this_thread::get_id();
+
+    using traits = detail::run_in_thread_traits<decltype(std::forward<F>(fun)())>;
+
+    typename traits::type ret;
+
+    bool skip_wait = false;
+
+    {
+        QObject src;
+        src.moveToThread(obj->thread());
+        QObject::connect(&src,
+                         &QObject::destroyed,
+                         obj,
+                         [&]() {
+            std::thread::id calling_thread = std::this_thread::get_id();
+            if (waiting_thread == calling_thread)
+            {
+                skip_wait = true;
+                traits::assign(ret, traits::call(fun));
+            }
+            else
+            {
+                lock_guard guard(mtx);
+                traits::assign(ret, traits::call(fun));
+                cvar.notify_one();
+            }
+        },
+        Qt::AutoConnection);
+    }
+
+    if (!skip_wait)
+        cvar.wait(guard);
+    return traits::pass(std::move(ret));
+}
+
+template<typename F>
+void run_in_thread_async(QObject* obj, F&& fun)
+{
+    QObject src;
+    src.moveToThread(obj->thread());
+    QObject::connect(&src, &QObject::destroyed, obj, std::move(fun), Qt::AutoConnection);
+}
diff --git a/compat/util.hpp b/compat/util.hpp
index 528ae1a8..7a6858a3 100644
--- a/compat/util.hpp
+++ b/compat/util.hpp
@@ -1,16 +1,10 @@
 #pragma once
 
 #include "make-unique.hpp"
+#include "run-in-thread.hpp"
 
 #include <memory>
 #include <cmath>
-#include <utility>
-#include <type_traits>
-#include <thread>
-#include <condition_variable>
-
-#include <QObject>
-#include <QDebug>
 
 #define progn(...) ([&]() { __VA_ARGS__ }())
 template<typename t> using mem = std::shared_ptr<t>;
@@ -47,82 +41,3 @@ inline auto clamp(const t& val, const u& min, const w& max) -> decltype(val * mi
 {
     return ::detail::clamp_<decltype(val * min * max)>(val, min, max);
 }
-
-namespace detail {
-
-template<typename t>
-struct run_in_thread_traits
-{
-    using type = t;
-    using ret_type = t&&;
-    static inline void assign(t& lvalue, t&& rvalue) { lvalue = rvalue; }
-    static inline ret_type&& pass(ret_type&& val) { return std::move(val); }
-    template<typename F> static ret_type call(F& fun) { return std::move(fun()); }
-};
-
-template<>
-struct run_in_thread_traits<void>
-{
-    using type = unsigned char;
-    using ret_type = void;
-    static inline void assign(unsigned char&, unsigned char&&) {}
-    static inline void pass(type&&) {}
-    template<typename F> static type&& call(F& fun) { fun(); return std::move(type(0)); }
-};
-
-}
-
-template<typename F>
-auto run_in_thread_sync(QObject* obj, F&& fun)
-    -> typename detail::run_in_thread_traits<decltype(std::forward<F>(fun)())>::ret_type
-{
-    using lock_guard = std::unique_lock<std::mutex>;
-
-    std::mutex mtx;
-    lock_guard guard(mtx);
-    std::condition_variable cvar;
-
-    std::thread::id waiting_thread = std::this_thread::get_id();
-
-    using traits = detail::run_in_thread_traits<decltype(std::forward<F>(fun)())>;
-
-    typename traits::type ret;
-
-    bool skip_wait = false;
-
-    {
-        QObject src;
-        src.moveToThread(obj->thread());
-        QObject::connect(&src,
-                         &QObject::destroyed,
-                         obj,
-                         [&]() {
-            std::thread::id calling_thread = std::this_thread::get_id();
-            if (waiting_thread == calling_thread)
-            {
-                skip_wait = true;
-                traits::assign(ret, traits::call(fun));
-            }
-            else
-            {
-                lock_guard guard(mtx);
-                traits::assign(ret, traits::call(fun));
-                cvar.notify_one();
-            }
-        },
-        Qt::AutoConnection);
-    }
-
-    if (!skip_wait)
-        cvar.wait(guard);
-    return traits::pass(std::move(ret));
-}
-
-template<typename F>
-void run_in_thread_async(QObject* obj, F&& fun)
-{
-    QObject src;
-    src.moveToThread(obj->thread());
-    QObject::connect(&src, &QObject::destroyed, obj, std::move(fun), Qt::AutoConnection);
-}
-
-- 
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