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_LINUX
22
23 #include <cstdio>
24
25 #include "src/cpp/server/load_reporter/get_cpu_stats.h"
26
27 namespace grpc {
28 namespace load_reporter {
29
GetCpuStatsImpl()30 std::pair<uint64_t, uint64_t> GetCpuStatsImpl() {
31 uint64_t busy = 0, total = 0;
32 FILE* fp;
33 fp = fopen("/proc/stat", "r");
34 uint64_t user, nice, system, idle;
35 if (fscanf(fp, "cpu %lu %lu %lu %lu", &user, &nice, &system, &idle) != 4) {
36 // Something bad happened with the information, so assume it's all invalid
37 user = nice = system = idle = 0;
38 }
39 fclose(fp);
40 busy = user + nice + system;
41 total = busy + idle;
42 return std::make_pair(busy, total);
43 }
44
45 } // namespace load_reporter
46 } // namespace grpc
47
48 #endif // GPR_LINUX
49