From e9bbb68829e972df2e458aa5beec0568d4737f02 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Sat, 29 Dec 2018 13:27:21 +0100
Subject: compat/spinlock: implement and use it

---
 dinput/dinput.cpp | 17 ++++++-----------
 dinput/dinput.hpp |  4 ++--
 2 files changed, 8 insertions(+), 13 deletions(-)

(limited to 'dinput')

diff --git a/dinput/dinput.cpp b/dinput/dinput.cpp
index 3931255b..75f398ad 100644
--- a/dinput/dinput.cpp
+++ b/dinput/dinput.cpp
@@ -1,8 +1,9 @@
 #include "dinput.hpp"
+#include "compat/spinlock.hpp"
 #include <QDebug>
 
-std::atomic<int> di_t::refcnt;
-std::atomic_flag di_t::init_lock = ATOMIC_FLAG_INIT;
+int di_t::refcnt{0};
+std::atomic_flag di_t::lock = ATOMIC_FLAG_INIT;
 diptr di_t::handle;
 
 diptr di_t::init_di_()
@@ -32,30 +33,24 @@ di_t::di_t()
 
 void di_t::ref_di()
 {
-    while (init_lock.test_and_set())
-        (void)0;
+    spinlock_guard l(lock);
 
     if (!handle)
         handle = init_di_();
 
     ++refcnt;
-
-    init_lock.clear();
 }
 
 void di_t::unref_di()
 {
+    spinlock_guard l(lock);
+
     const int refcnt_ = --refcnt;
 
     if (refcnt_ == 0)
     {
-        while (init_lock.test_and_set())
-            (void)0;
-
         qDebug() << "exit: di handle";
         handle->Release();
-
-        init_lock.clear();
     }
 }
 
diff --git a/dinput/dinput.hpp b/dinput/dinput.hpp
index a9241504..7128229b 100644
--- a/dinput/dinput.hpp
+++ b/dinput/dinput.hpp
@@ -25,8 +25,8 @@ class OTR_DINPUT_EXPORT di_t final
     static void ref_di();
 
     static diptr handle;
-    static std::atomic<int> refcnt;
-    static std::atomic_flag init_lock;
+    static int refcnt;
+    static std::atomic_flag lock;
     static diptr init_di_();
 
 public:
-- 
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