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win32u: Maintain a list of GPUs in cache.

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Signed-off-by: Krzysztof Bogacki <krzysztof.bogacki@leancode.pl>
This commit is contained in:
Krzysztof Bogacki 2024-01-27 16:27:27 +01:00 • committed by Alexandre Julliard
parent 10db5b67b8
commit 800b5e44fc
1 changed files with 77 additions and 1 deletions
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78
dlls/win32u/sysparams.c
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@ -233,6 +233,13 @@ struct display_device
WCHAR device_key[128]; /* DeviceKey in DISPLAY_DEVICEW */
};
struct gpu
{
struct list entry;
LUID luid;
unsigned int adapter_count;
};
struct adapter
{
LONG refcount;
@ -275,6 +282,7 @@ struct monitor
struct edid_monitor_info edid_info;
};
static struct list gpus = LIST_INIT(gpus);
static struct list adapters = LIST_INIT(adapters);
static struct list monitors = LIST_INIT(monitors);
static INT64 last_query_display_time;
@ -1672,6 +1680,7 @@ static void clear_display_devices(void)
{
struct adapter *adapter;
struct monitor *monitor;
struct gpu *gpu;
if (list_head( &monitors ) == &virtual_monitor.entry)
{
@ -1693,19 +1702,32 @@ static void clear_display_devices(void)
list_remove( &adapter->entry );
adapter_release( adapter );
}
while (!list_empty( &gpus ))
{
gpu = LIST_ENTRY( list_head( &gpus ), struct gpu, entry );
list_remove( &gpu->entry );
free( gpu );
}
}
static BOOL update_display_cache_from_registry(void)
{
char buffer[1024];
DWORD adapter_id, monitor_id, monitor_count = 0, size;
KEY_BASIC_INFORMATION key;
KEY_VALUE_PARTIAL_INFORMATION *value = (void *)buffer;
KEY_BASIC_INFORMATION key, *key2 = (void *)buffer;
HKEY pci_key, device_key, gpu_key, prop_key;
struct adapter *adapter;
struct monitor *monitor, *monitor2;
HANDLE mutex = NULL;
NTSTATUS status;
struct gpu *gpu;
BOOL ret;
/* If user driver did initialize the registry, then exit */
if (!enum_key && !(enum_key = reg_open_key( NULL, enum_keyW, sizeof(enum_keyW) )))
return FALSE;
if (!video_key && !(video_key = reg_open_key( NULL, devicemap_video_keyW,
sizeof(devicemap_video_keyW) )))
return FALSE;
@ -1761,6 +1783,60 @@ static BOOL update_display_cache_from_registry(void)
}
}
if ((pci_key = reg_open_key( enum_key, pciW, sizeof(pciW) )))
{
unsigned int i = 0;
while (!NtEnumerateKey( pci_key, i++, KeyBasicInformation, key2, sizeof(buffer), &size ))
{
unsigned int j = 0;
if (!(device_key = reg_open_key( pci_key, key2->Name, key2->NameLength )))
continue;
while (!NtEnumerateKey( device_key, j++, KeyBasicInformation, key2, sizeof(buffer), &size ))
{
if (!(gpu_key = reg_open_key( device_key, key2->Name, key2->NameLength )))
continue;
size = query_reg_value( gpu_key, class_guidW, value, sizeof(buffer) );
if (size != sizeof(guid_devclass_displayW)
|| wcscmp( (WCHAR *)value->Data, guid_devclass_displayW ))
{
NtClose( gpu_key );
continue;
}
if (!(gpu = calloc( 1, sizeof(*gpu) )))
{
NtClose( gpu_key );
continue;
}
if ((prop_key = reg_open_key( gpu_key, devpropkey_gpu_luidW,
sizeof(devpropkey_gpu_luidW) )))
{
if (query_reg_value( prop_key, NULL, value, sizeof(buffer) ) == sizeof(LUID))
gpu->luid = *(const LUID *)value->Data;
NtClose( prop_key );
}
LIST_FOR_EACH_ENTRY(adapter, &adapters, struct adapter, entry)
{
if (!memcmp( &adapter->gpu_luid, &gpu->luid, sizeof(LUID) ))
gpu->adapter_count++;
}
list_add_tail( &gpus, &gpu->entry );
NtClose( gpu_key );
}
NtClose( device_key );
}
NtClose( pci_key );
}
if ((ret = !list_empty( &adapters ) && !list_empty( &monitors )))
last_query_display_time = key.LastWriteTime.QuadPart;
pthread_mutex_unlock( &display_lock );