1 /*
2 *
3 * Copyright 2018 gRPC authors.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 */
18
19 #include <grpc/support/port_platform.h>
20
21 #ifdef GPR_WINDOWS
22
23 #include <windows.h>
24 #include <cstdint>
25
26 #include "src/cpp/server/load_reporter/get_cpu_stats.h"
27
28 namespace grpc {
29 namespace load_reporter {
30
31 namespace {
32
FiletimeToInt(const FILETIME & ft)33 uint64_t FiletimeToInt(const FILETIME& ft) {
34 ULARGE_INTEGER i;
35 i.LowPart = ft.dwLowDateTime;
36 i.HighPart = ft.dwHighDateTime;
37 return i.QuadPart;
38 }
39
40 } // namespace
41
GetCpuStatsImpl()42 std::pair<uint64_t, uint64_t> GetCpuStatsImpl() {
43 uint64_t busy = 0, total = 0;
44 FILETIME idle, kernel, user;
45 if (GetSystemTimes(&idle, &kernel, &user) != 0) {
46 total = FiletimeToInt(kernel) + FiletimeToInt(user);
47 busy = total - FiletimeToInt(idle);
48 }
49 return std::make_pair(busy, total);
50 }
51
52 } // namespace load_reporter
53 } // namespace grpc
54
55 #endif // GPR_WINDOWS
56