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
25 #include <cstdint>
26
27 #include "src/cpp/server/load_reporter/get_cpu_stats.h"
28
29 namespace grpc {
30 namespace load_reporter {
31
32 namespace {
33
FiletimeToInt(const FILETIME & ft)34 uint64_t FiletimeToInt(const FILETIME& ft) {
35 ULARGE_INTEGER i;
36 i.LowPart = ft.dwLowDateTime;
37 i.HighPart = ft.dwHighDateTime;
38 return i.QuadPart;
39 }
40
41 } // namespace
42
GetCpuStatsImpl()43 std::pair<uint64_t, uint64_t> GetCpuStatsImpl() {
44 uint64_t busy = 0, total = 0;
45 FILETIME idle, kernel, user;
46 if (GetSystemTimes(&idle, &kernel, &user) != 0) {
47 total = FiletimeToInt(kernel) + FiletimeToInt(user);
48 busy = total - FiletimeToInt(idle);
49 }
50 return std::make_pair(busy, total);
51 }
52
53 } // namespace load_reporter
54 } // namespace grpc
55
56 #endif // GPR_WINDOWS
57