kernelbase: Implement reading performance counter name strings.

dlls/advapi32/tests/registry.c

@@ -3785,7 +3785,7 @@ static void test_performance_keys(void)
 
         size = 0xdeadbeef;
         ret = RegQueryValueExA(keys[i], "cOuNtEr", NULL, NULL, NULL, &size);
-        todo_wine
+        todo_wine_if (keys[i] != HKEY_PERFORMANCE_DATA)
         {
             ok(!ret, "got %u\n", ret);
             ok(size > 0 && size < 0xdeadbeef, "got size %u\n", size);
@@ -3795,15 +3795,19 @@ static void test_performance_keys(void)
         size = 0;
         ret = RegQueryValueExA(keys[i], "cOuNtEr", NULL, &type, buffer, &size);
         todo_wine_if (keys[i] != HKEY_PERFORMANCE_DATA)
+        {
             ok(ret == ERROR_MORE_DATA, "got %u\n", ret);
-        todo_wine ok(size > 0, "got size %u\n", size);
+            ok(size > 0, "got size %u\n", size);
+        }
 
         type = 0xdeadbeef;
         size = buffer_size;
         ret = RegQueryValueExA(keys[i], "cOuNtEr", NULL, &type, buffer, &size);
         todo_wine_if (keys[i] != HKEY_PERFORMANCE_DATA)
+        {
             ok(!ret, "got %u\n", ret);
-        todo_wine ok(type == REG_MULTI_SZ, "got type %u\n", type);
+            ok(type == REG_MULTI_SZ, "got type %u\n", type);
+        }
         if (type == REG_MULTI_SZ)
             test_counter_values(buffer, keys[i]);
 
@@ -3811,14 +3815,16 @@ static void test_performance_keys(void)
         size = buffer_size;
         ret = RegQueryValueExA(keys[i], "cOuNtErwine", NULL, &type, buffer, &size);
         todo_wine_if (keys[i] != HKEY_PERFORMANCE_DATA)
+        {
             ok(!ret, "got %u\n", ret);
-        todo_wine ok(type == REG_MULTI_SZ, "got type %u\n", type);
+            ok(type == REG_MULTI_SZ, "got type %u\n", type);
+        }
         if (type == REG_MULTI_SZ)
             test_counter_values(buffer, keys[i]);
 
         size = 0;
         ret = RegQueryValueExW(keys[i], L"cOuNtEr", NULL, NULL, NULL, &size);
-        todo_wine
+        todo_wine_if (keys[i] != HKEY_PERFORMANCE_DATA)
         {
             ok(!ret, "got %u\n", ret);
             ok(size > 0, "got size %u\n", size);
@@ -3828,7 +3834,7 @@ static void test_performance_keys(void)
 
         type = 0xdeadbeef;
         ret = RegQueryValueExW(keys[i], L"cOuNtEr", NULL, &type, bufferW, &size);
-        todo_wine
+        todo_wine_if (keys[i] != HKEY_PERFORMANCE_DATA)
         {
             ok(!ret, "got %u\n", ret);
             ok(type == REG_MULTI_SZ, "got type %u\n", type);

dlls/kernelbase/registry.c

@@ -1204,6 +1204,27 @@ LONG WINAPI RegSetKeyValueA( HKEY hkey, LPCSTR subkey, LPCSTR name, DWORD type,
     return ret;
 }
 
+/* FIXME: we should read data from system32/perf009c.dat (or perf###c depending
+ * on locale) instead */
+static DWORD query_perf_names( DWORD *type, void *data, DWORD *ret_size, BOOL unicode )
+{
+    static const WCHAR names[] = L"1\0" "1847\0" "1846\0End Marker\0";
+    DWORD size = *ret_size;
+
+    if (type) *type = REG_MULTI_SZ;
+    *ret_size = sizeof(names);
+    if (!unicode) *ret_size /= sizeof(WCHAR);
+
+    if (!data) return ERROR_SUCCESS;
+    if (size < *ret_size) return ERROR_MORE_DATA;
+
+    if (unicode)
+        memcpy( data, names, sizeof(names) );
+    else
+        RtlUnicodeToMultiByteN( data, size, NULL, names, sizeof(names) );
+    return ERROR_SUCCESS;
+}
+
 struct perf_provider
 {
     HMODULE perflib;
@@ -1338,7 +1359,7 @@ static DWORD collect_data(struct perf_provider *provider, const WCHAR *query, vo
 
 #define MAX_SERVICE_NAME 260
 
-static DWORD query_perf_data(const WCHAR *query, DWORD *type, void *data, DWORD *ret_size)
+static DWORD query_perf_data( const WCHAR *query, DWORD *type, void *data, DWORD *ret_size, BOOL unicode )
 {
     DWORD err, i, data_size;
     HKEY root;
@@ -1347,6 +1368,9 @@ static DWORD query_perf_data(const WCHAR *query, DWORD *type, void *data, DWORD
     if (!ret_size)
         return ERROR_INVALID_PARAMETER;
 
+    if (!wcsnicmp( query, L"counter", 7 ))
+        return query_perf_names( type, data, ret_size, unicode );
+
     data_size = *ret_size;
     *ret_size = 0;
 
@@ -1480,7 +1504,7 @@ LSTATUS WINAPI DECLSPEC_HOTPATCH RegQueryValueExW( HKEY hkey, LPCWSTR name, LPDW
     if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
 
     if (hkey == HKEY_PERFORMANCE_DATA)
-        return query_perf_data(name, type, data, count);
+        return query_perf_data( name, type, data, count, TRUE );
 
     if (!(hkey = get_special_root_hkey( hkey, 0 ))) return ERROR_INVALID_HANDLE;
 
@@ -1587,7 +1611,7 @@ LSTATUS WINAPI DECLSPEC_HOTPATCH RegQueryValueExA( HKEY hkey, LPCSTR name, LPDWO
 
     if (hkey == HKEY_PERFORMANCE_DATA)
     {
-        DWORD ret = query_perf_data( nameW.Buffer, type, data, count );
+        DWORD ret = query_perf_data( nameW.Buffer, type, data, count, FALSE );
         RtlFreeUnicodeString( &nameW );
         return ret;
     }