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msacm32: Reference count local drivers.
One local driver can be assigned to multiple driver ids. When releasing the driver id, check if the reference count of a local driver is one before actually releasing the local driver. Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=46520 Signed-off-by: Zhiyi Zhang <zzhang@codeweavers.com> Signed-off-by: Andrew Eikum <aeikum@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
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@ -737,12 +737,17 @@ static PWINE_ACMLOCALDRIVER MSACM_pLastACMLocalDriver;
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static PWINE_ACMLOCALDRIVER MSACM_UnregisterLocalDriver(PWINE_ACMLOCALDRIVER paldrv)
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{
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PWINE_ACMLOCALDRIVER pNextACMLocalDriver;
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LONG ref;
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if (paldrv->pACMInstList) {
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ERR("local driver instances still present after closing all drivers - memory leak\n");
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return NULL;
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}
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ref = InterlockedDecrement(&paldrv->ref);
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if (ref)
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return paldrv;
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if (paldrv == MSACM_pFirstACMLocalDriver)
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MSACM_pFirstACMLocalDriver = paldrv->pNextACMLocalDrv;
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if (paldrv == MSACM_pLastACMLocalDriver)
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@ -883,7 +888,11 @@ PWINE_ACMLOCALDRIVER MSACM_RegisterLocalDriver(HMODULE hModule, DRIVERPROC lpDri
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/* look up previous instance of local driver module */
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for (paldrv = MSACM_pFirstACMLocalDriver; paldrv; paldrv = paldrv->pNextACMLocalDrv)
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{
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if (paldrv->hModule == hModule && paldrv->lpDrvProc == lpDriverProc) return paldrv;
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if (paldrv->hModule == hModule && paldrv->lpDrvProc == lpDriverProc)
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{
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InterlockedIncrement(&paldrv->ref);
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return paldrv;
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}
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}
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paldrv = HeapAlloc(MSACM_hHeap, 0, sizeof(WINE_ACMLOCALDRIVER));
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@ -892,6 +901,7 @@ PWINE_ACMLOCALDRIVER MSACM_RegisterLocalDriver(HMODULE hModule, DRIVERPROC lpDri
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paldrv->hModule = hModule;
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paldrv->lpDrvProc = lpDriverProc;
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paldrv->pACMInstList = NULL;
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paldrv->ref = 1;
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paldrv->pNextACMLocalDrv = NULL;
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paldrv->pPrevACMLocalDrv = MSACM_pLastACMLocalDriver;
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@ -52,6 +52,7 @@ typedef struct _WINE_ACMLOCALDRIVER
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PWINE_ACMLOCALDRIVERINST pACMInstList;
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PWINE_ACMLOCALDRIVER pNextACMLocalDrv;
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PWINE_ACMLOCALDRIVER pPrevACMLocalDrv;
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LONG ref;
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} WINE_ACMLOCALDRIVER;
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typedef struct _WINE_ACMLOCALDRIVERINST
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