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wgi: refcount the delegate objects 

assert if calls become unbalanced.
This commit is contained in:
Shawn Hoffman 2022-08-28 22:20:58 -07:00 committed by Sam Lantinga
parent f1e4685806
commit ff233fe306
1 changed files with 22 additions and 7 deletions
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29
src/joystick/windows/SDL_windows_gaming_input.c
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@ -22,6 +22,8 @@
#ifdef SDL_JOYSTICK_WGI #ifdef SDL_JOYSTICK_WGI
#include "SDL_assert.h"
#include "SDL_atomic.h"
#include "SDL_endian.h" #include "SDL_endian.h"
#include "SDL_events.h" #include "SDL_events.h"
#include "../SDL_sysjoystick.h" #include "../SDL_sysjoystick.h"
@ -207,6 +209,11 @@ SDL_IsXInputDevice(Uint16 vendor, Uint16 product)
return SDL_FALSE; return SDL_FALSE;
} }
typedef struct RawGameControllerDelegate {
__FIEventHandler_1_Windows__CGaming__CInput__CRawGameController *vtbl;
SDL_atomic_t refcount;
} RawGameControllerDelegate;
static HRESULT STDMETHODCALLTYPE IEventHandler_CRawGameControllerVtbl_QueryInterface(__FIEventHandler_1_Windows__CGaming__CInput__CRawGameController * This, REFIID riid, void **ppvObject) static HRESULT STDMETHODCALLTYPE IEventHandler_CRawGameControllerVtbl_QueryInterface(__FIEventHandler_1_Windows__CGaming__CInput__CRawGameController * This, REFIID riid, void **ppvObject)
{ {
if (!ppvObject) { if (!ppvObject) {
@ -216,9 +223,10 @@ static HRESULT STDMETHODCALLTYPE IEventHandler_CRawGameControllerVtbl_QueryInter
*ppvObject = NULL; *ppvObject = NULL;
if (WIN_IsEqualIID(riid, &IID_IUnknown) || WIN_IsEqualIID(riid, &IID_IAgileObject) || WIN_IsEqualIID(riid, &IID_IEventHandler_RawGameController)) { if (WIN_IsEqualIID(riid, &IID_IUnknown) || WIN_IsEqualIID(riid, &IID_IAgileObject) || WIN_IsEqualIID(riid, &IID_IEventHandler_RawGameController)) {
*ppvObject = This; *ppvObject = This;
__x_ABI_CWindows_CGaming_CInput_CIRawGameControllerStatics_AddRef(This);
return S_OK; return S_OK;
} else if (WIN_IsEqualIID(riid, &IID_IMarshal)) { } else if (WIN_IsEqualIID(riid, &IID_IMarshal)) {
// This seems complicated. Let's hope it doesn't happen. /* This seems complicated. Let's hope it doesn't happen. */
return E_OUTOFMEMORY; return E_OUTOFMEMORY;
} else { } else {
return E_NOINTERFACE; return E_NOINTERFACE;
@ -227,12 +235,17 @@ static HRESULT STDMETHODCALLTYPE IEventHandler_CRawGameControllerVtbl_QueryInter
static ULONG STDMETHODCALLTYPE IEventHandler_CRawGameControllerVtbl_AddRef(__FIEventHandler_1_Windows__CGaming__CInput__CRawGameController * This) static ULONG STDMETHODCALLTYPE IEventHandler_CRawGameControllerVtbl_AddRef(__FIEventHandler_1_Windows__CGaming__CInput__CRawGameController * This)
{ {
return 1; RawGameControllerDelegate *self = (RawGameControllerDelegate *)This;
return SDL_AtomicAdd(&self->refcount, 1) + 1;
} }
static ULONG STDMETHODCALLTYPE IEventHandler_CRawGameControllerVtbl_Release(__FIEventHandler_1_Windows__CGaming__CInput__CRawGameController * This) static ULONG STDMETHODCALLTYPE IEventHandler_CRawGameControllerVtbl_Release(__FIEventHandler_1_Windows__CGaming__CInput__CRawGameController * This)
{ {
return 1; RawGameControllerDelegate *self = (RawGameControllerDelegate *)This;
int rc = SDL_AtomicAdd(&self->refcount, -1) - 1;
/* Should never free the static delegate objects */
SDL_assert(rc > 0);
return rc;
} }
static HRESULT STDMETHODCALLTYPE IEventHandler_CRawGameControllerVtbl_InvokeAdded(__FIEventHandler_1_Windows__CGaming__CInput__CRawGameController * This, IInspectable *sender, __x_ABI_CWindows_CGaming_CInput_CIRawGameController *e) static HRESULT STDMETHODCALLTYPE IEventHandler_CRawGameControllerVtbl_InvokeAdded(__FIEventHandler_1_Windows__CGaming__CInput__CRawGameController * This, IInspectable *sender, __x_ABI_CWindows_CGaming_CInput_CIRawGameController *e)
@ -417,8 +430,9 @@ static __FIEventHandler_1_Windows__CGaming__CInput__CRawGameControllerVtbl contr
IEventHandler_CRawGameControllerVtbl_Release, IEventHandler_CRawGameControllerVtbl_Release,
IEventHandler_CRawGameControllerVtbl_InvokeAdded IEventHandler_CRawGameControllerVtbl_InvokeAdded
}; };
static __FIEventHandler_1_Windows__CGaming__CInput__CRawGameController controller_added = { static RawGameControllerDelegate controller_added = {
&controller_added_vtbl { &controller_added_vtbl },
{ 1 }
}; };
static __FIEventHandler_1_Windows__CGaming__CInput__CRawGameControllerVtbl controller_removed_vtbl = { static __FIEventHandler_1_Windows__CGaming__CInput__CRawGameControllerVtbl controller_removed_vtbl = {
@ -427,8 +441,9 @@ static __FIEventHandler_1_Windows__CGaming__CInput__CRawGameControllerVtbl contr
IEventHandler_CRawGameControllerVtbl_Release, IEventHandler_CRawGameControllerVtbl_Release,
IEventHandler_CRawGameControllerVtbl_InvokeRemoved IEventHandler_CRawGameControllerVtbl_InvokeRemoved
}; };
static __FIEventHandler_1_Windows__CGaming__CInput__CRawGameController controller_removed = { static RawGameControllerDelegate controller_removed = {
&controller_removed_vtbl { &controller_removed_vtbl },
{ 1 }
}; };
static int static int