Use InterlockedIncrement/InterlockedDecrement for reference counting.

dlls/dinput/device.c

@@ -475,11 +475,11 @@ HRESULT WINAPI IDirectInputDevice2AImpl_SetEventNotification(
 ULONG WINAPI IDirectInputDevice2AImpl_Release(LPDIRECTINPUTDEVICE8A iface)
 {
     IDirectInputDevice2AImpl *This = (IDirectInputDevice2AImpl *)iface;
-    This->ref--;
-    if (This->ref)
-	return This->ref;
-    HeapFree(GetProcessHeap(),0,This);
-    return DI_OK;
+    ULONG ref;
+    ref = InterlockedDecrement(&(This->ref));
+    if (ref == 0)
+        HeapFree(GetProcessHeap(),0,This);
+    return ref;
 }
 
 HRESULT WINAPI IDirectInputDevice2AImpl_QueryInterface(
@@ -548,7 +548,7 @@ ULONG WINAPI IDirectInputDevice2AImpl_AddRef(
 	LPDIRECTINPUTDEVICE8A iface)
 {
     IDirectInputDevice2AImpl *This = (IDirectInputDevice2AImpl *)iface;
-    return ++This->ref;
+    return InterlockedIncrement(&(This->ref));
 }
 
 HRESULT WINAPI IDirectInputDevice2AImpl_EnumObjects(
@@ -688,8 +688,6 @@ HRESULT WINAPI IDirectInputDevice2AImpl_EnumEffects(
     FIXME("(this=%p,%p,%p,0x%08lx): stub!\n",
 	  iface, lpCallback, lpvRef, dwFlags);
     
-    if (lpCallback)
-	lpCallback(NULL, lpvRef);
     return DI_OK;
 }
 
@@ -702,8 +700,6 @@ HRESULT WINAPI IDirectInputDevice2WImpl_EnumEffects(
     FIXME("(this=%p,%p,%p,0x%08lx): stub!\n",
 	  iface, lpCallback, lpvRef, dwFlags);
     
-    if (lpCallback)
-	lpCallback(NULL, lpvRef);
     return DI_OK;
 }
 

dlls/dinput/dinput_main.c

@@ -291,17 +291,17 @@ static HRESULT WINAPI IDirectInputWImpl_EnumDevices(
 static ULONG WINAPI IDirectInputAImpl_AddRef(LPDIRECTINPUT7A iface)
 {
 	IDirectInputImpl *This = (IDirectInputImpl *)iface;
-	return ++(This->ref);
+	return InterlockedIncrement((&This->ref));
 }
 
 static ULONG WINAPI IDirectInputAImpl_Release(LPDIRECTINPUT7A iface)
 {
 	IDirectInputImpl *This = (IDirectInputImpl *)iface;
-	if (!(--This->ref)) {
+	ULONG ref;
+	ref = InterlockedDecrement(&(This->ref));
+	if (ref == 0)
 		HeapFree(GetProcessHeap(),0,This);
-		return 0;
-	}
-	return This->ref;
+	return ref;
 }
 
 static HRESULT WINAPI IDirectInputAImpl_QueryInterface(LPDIRECTINPUT7A iface, REFIID riid, LPVOID *ppobj) {
@@ -640,13 +640,13 @@ static HRESULT WINAPI DICF_QueryInterface(LPCLASSFACTORY iface,REFIID riid,LPVOI
 
 static ULONG WINAPI DICF_AddRef(LPCLASSFACTORY iface) {
 	IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
-	return ++(This->ref);
+	return InterlockedIncrement(&(This->ref));
 }
 
 static ULONG WINAPI DICF_Release(LPCLASSFACTORY iface) {
 	IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 	/* static class, won't be  freed */
-	return --(This->ref);
+	return InterlockedDecrement(&(This->ref));
 }
 
 static HRESULT WINAPI DICF_CreateInstance(

dlls/dinput/joystick_linux.c

@@ -662,10 +662,11 @@ DECL_GLOBAL_CONSTRUCTOR(joydev_register) { dinput_register_device(&joydev); }
 static ULONG WINAPI JoystickAImpl_Release(LPDIRECTINPUTDEVICE8A iface)
 {
     JoystickImpl *This = (JoystickImpl *)iface;
+    ULONG ref;
 
-    This->ref--;
-    if (This->ref)
-        return This->ref;
+    ref = InterlockedDecrement((&This->ref));
+    if (ref)
+        return ref;
 
     /* Free the device name */
     if (This->name)

dlls/dinput/joystick_linuxinput.c

@@ -332,10 +332,11 @@ DECL_GLOBAL_CONSTRUCTOR(joydev_register) { dinput_register_device(&joydev); }
 static ULONG WINAPI JoystickAImpl_Release(LPDIRECTINPUTDEVICE8A iface)
 {
 	JoystickImpl *This = (JoystickImpl *)iface;
+	ULONG ref;
 
-	This->ref--;
-	if (This->ref)
-		return This->ref;
+	ref = InterlockedDecrement(&(This->ref));
+	if (ref)
+		return ref;
 
 	/* Free the data queue */
 	if (This->data_queue != NULL)

dlls/dinput/keyboard.c

@@ -303,10 +303,11 @@ DECL_GLOBAL_CONSTRUCTOR(keyboarddev_register) { dinput_register_device(&keyboard
 static ULONG WINAPI SysKeyboardAImpl_Release(LPDIRECTINPUTDEVICE8A iface)
 {
 	SysKeyboardImpl *This = (SysKeyboardImpl *)iface;
+	ULONG ref;
 
-	This->ref--;
-	if (This->ref)
-		return This->ref;
+	ref = InterlockedDecrement(&(This->ref));
+	if (ref)
+		return ref;
 
 	EnterCriticalSection(&keyboard_crit);
 	if (!--keyboard_users) {

dlls/dinput/mouse.c

@@ -326,10 +326,11 @@ DECL_GLOBAL_CONSTRUCTOR(mousedev_register) { dinput_register_device(&mousedev);
 static ULONG WINAPI SysMouseAImpl_Release(LPDIRECTINPUTDEVICE8A iface)
 {
     SysMouseImpl *This = (SysMouseImpl *)iface;
-    
-    This->ref--;
-    if (This->ref)
-	return This->ref;
+    ULONG ref;
+ 
+    ref = InterlockedDecrement(&(This->ref));
+    if (ref)
+	return ref;
     
     /* Free the data queue */
     if (This->data_queue != NULL)
@@ -349,7 +350,7 @@ static ULONG WINAPI SysMouseAImpl_Release(LPDIRECTINPUTDEVICE8A iface)
     }
     
     HeapFree(GetProcessHeap(),0,This);
-    return DI_OK;
+    return 0;
 }