From 1cfafd9df6e334ac436cc4ffd78de6341b9caa42 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Tue, 26 Jun 2018 22:26:07 +0200
Subject: dinput: simplify di_t

---
 dinput/dinput.cpp | 80 +++++++++++++++++++------------------------------------
 1 file changed, 28 insertions(+), 52 deletions(-)

(limited to 'dinput/dinput.cpp')

diff --git a/dinput/dinput.cpp b/dinput/dinput.cpp
index 226d3277..c3509dd6 100644
--- a/dinput/dinput.cpp
+++ b/dinput/dinput.cpp
@@ -1,88 +1,64 @@
 #include "dinput.hpp"
 #include <QDebug>
 
-std::atomic<int> dinput_handle::refcnt;
-std::atomic_flag dinput_handle::init_lock = ATOMIC_FLAG_INIT;
+std::atomic<int> di_t::refcnt;
+std::atomic_flag di_t::init_lock = ATOMIC_FLAG_INIT;
+diptr di_t::handle;
 
-LPDIRECTINPUT8& dinput_handle::init_di()
+diptr di_t::init_di_()
 {
     CoInitialize(nullptr);
 
-    static LPDIRECTINPUT8 di_ = nullptr;
-    if (di_ == nullptr)
+    diptr di = nullptr;
+    if (HRESULT hr = DirectInput8Create(GetModuleHandle(nullptr),
+                                        DIRECTINPUT_VERSION,
+                                        IID_IDirectInput8,
+                                        (void**)&di,
+                                        nullptr);
+        !SUCCEEDED(hr))
     {
-        if (!SUCCEEDED(DirectInput8Create(GetModuleHandle(NULL), DIRECTINPUT_VERSION, IID_IDirectInput8, (void**)&di_, NULL)))
-        {
-            di_ = nullptr;
-        }
+        qDebug() << "can't make dinput:" << (void*)hr;
+        qDebug() << "crashing!";
+        std::abort();
     }
-    return di_;
-}
-
-dinput_handle::di_t dinput_handle::make_di()
-{
-    while (init_lock.test_and_set()) { /* busy loop */ }
-
-    LPDIRECTINPUT8& ret = init_di();
 
-    init_lock.clear();
-
-    return di_t(ret);
+    return di;
 }
 
-void dinput_handle::di_t::free_di()
+di_t::di_t()
 {
-    if (handle && *handle)
-    {
-        (*handle)->Release();
-        *handle = nullptr;
-    }
-    handle = nullptr;
-}
-
-void dinput_handle::di_t::ref_di()
-{
-    //const int refcnt_ = refcnt.fetch_add(1) + 1;
-    (void) refcnt.fetch_add(1);
+    ref_di();
 }
 
-dinput_handle::di_t& dinput_handle::di_t::operator=(const di_t& new_di)
+void di_t::ref_di()
 {
-    if (handle)
-        unref_di();
+    while (init_lock.test_and_set()) { /* busy loop */ }
 
-    handle = new_di.handle;
+    if (!handle)
+        handle = init_di_();
 
-    if (handle)
-        ref_di();
+    ++refcnt;
 
-    return *this;
+    init_lock.clear();
 }
 
-void dinput_handle::di_t::unref_di()
+void di_t::unref_di()
 {
-    const int refcnt_ = refcnt.fetch_sub(1) - 1;
+    const int refcnt_ = --refcnt;
 
     if (refcnt_ == 0)
     {
         while (init_lock.test_and_set()) { /* busy loop */ }
 
         qDebug() << "exit: di handle";
-        free_di();
+        handle->Release();
 
         init_lock.clear();
     }
 }
 
-dinput_handle::di_t::di_t(LPDIRECTINPUT8& handle) : handle(&handle)
+di_t::~di_t()
 {
-    ref_di();
+    unref_di();
 }
 
-dinput_handle::di_t::di_t() : handle(nullptr) {}
-
-dinput_handle::di_t::~di_t()
-{
-    if (handle)
-        unref_di();
-}
-- 
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