src/procfs.c

   1 /*
   2  * Copyright (c) 2018 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Flora License, Version 1.1 (the License);
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://floralicense.org/license/
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an AS IS BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <stdio.h>
  18
  19 #include "procfs.h"
  20 #include "log.h"
  21 #include "err-check.h"
  22
  23 #define LOADAVG_FILEPATH "/proc/loadavg"
  24
  25 int procfs_read_system_load_average(struct procfs_load_average_info *info)
  26 {
  27         float a1, a5, a15;
  28
  29         ON_NULL_RETURN_VAL(info, -1);
  30
  31         FILE *loadavg_fp = fopen(LOADAVG_FILEPATH, "r");
  32         if (!loadavg_fp) {
  33                 ERR("failed to open " LOADAVG_FILEPATH);
  34                 return -1;
  35         }
  36
  37         if (fscanf(loadavg_fp, "%f %f %f", &a1, &a5, &a15) != 3) {
  38                 ERR("failed to read " LOADAVG_FILEPATH);
  39                 fclose(loadavg_fp);
  40                 return -1;
  41         }
  42
  43         info->one_min_avg = a1;
  44         info->five_min_avg = a5;
  45         info->fifteen_min_avg = a15;
  46
  47         fclose(loadavg_fp);
  48
  49         return 0;
  50 }
  51
  52 int profcs_read_system_cpu_usage(struct procfs_system_cpu_usage_info *usage)
  53 {
  54         return -1;
  55 }
  56
  57 int profcs_read_system_percpu_usage(struct procfs_system_percpu_usage_info **usage)
  58 {
  59         return -1;
  60 }
  61
  62 int procfs_read_system_memory_usage(struct procfs_system_memory_usage_info *usage)
  63 {
  64         return -1;
  65 }
  66
  67 int procfs_read_process_memory_usage(int pid, struct procfs_process_memory_usage_info *usage)
  68 {
  69         return -1;
  70 }
  71
  72 int procfs_read_process_cpu_usage(int pid, struct procfs_process_cpu_usage_info *usage)
  73 {
  74         return -1;
  75 }
  76
  77 int procfs_read_uptime(int *uptime)
  78 {
  79         return -1;
  80 }
  81
  82 int procfs_read_cpu_count(int *cpu_count)
  83 {
  84         return -1;
  85 }