gpu: fix windows_gpu_info metric (#2130)

internal/headers/gdi32/syscall.go

@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: Apache-2.0
+//
+// Copyright The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package gdi32
+
+import (
+	"fmt"
+	"unsafe"
+
+	"github.com/prometheus-community/windows_exporter/internal/headers/ntdll"
+	"golang.org/x/sys/windows"
+)
+
+//nolint:gochecknoglobals
+var (
+	modGdi32                      = windows.NewLazySystemDLL("gdi32.dll")
+	procD3DKMTOpenAdapterFromLuid = modGdi32.NewProc("D3DKMTOpenAdapterFromLuid")
+	procD3DKMTQueryAdapterInfo    = modGdi32.NewProc("D3DKMTQueryAdapterInfo")
+	procD3DKMTCloseAdapter        = modGdi32.NewProc("D3DKMTCloseAdapter")
+	procD3DKMTEnumAdapters2       = modGdi32.NewProc("D3DKMTEnumAdapters2")
+)
+
+func D3DKMTOpenAdapterFromLuid(ptr *D3DKMT_OPENADAPTERFROMLUID) error {
+	ret, _, _ := procD3DKMTOpenAdapterFromLuid.Call(
+		uintptr(unsafe.Pointer(ptr)),
+	)
+	if ret != 0 {
+		return fmt.Errorf("D3DKMTOpenAdapterFromLuid failed: 0x%X: %w", ret, ntdll.RtlNtStatusToDosError(ret))
+	}
+
+	return nil
+}
+
+func D3DKMTEnumAdapters2(ptr *D3DKMT_ENUMADAPTERS2) error {
+	ret, _, _ := procD3DKMTEnumAdapters2.Call(
+		uintptr(unsafe.Pointer(ptr)),
+	)
+	if ret != 0 {
+		return fmt.Errorf("D3DKMTEnumAdapters2 failed: 0x%X: %w", ret, ntdll.RtlNtStatusToDosError(ret))
+	}
+
+	return nil
+}
+
+func D3DKMTQueryAdapterInfo(query *D3DKMT_QUERYADAPTERINFO) error {
+	ret, _, _ := procD3DKMTQueryAdapterInfo.Call(
+		uintptr(unsafe.Pointer(query)),
+	)
+	if ret != 0 {
+		return fmt.Errorf("D3DKMTQueryAdapterInfo failed: 0x%X: %w", ret, ntdll.RtlNtStatusToDosError(ret))
+	}
+
+	return nil
+}
+
+func D3DKMTCloseAdapter(ptr *D3DKMT_CLOSEADAPTER) error {
+	ret, _, _ := procD3DKMTCloseAdapter.Call(
+		uintptr(unsafe.Pointer(ptr)),
+	)
+	if ret != 0 {
+		return fmt.Errorf("D3DKMTCloseAdapter failed: 0x%X: %w", ret, ntdll.RtlNtStatusToDosError(ret))
+	}
+
+	return nil
+}