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
  22 #define LOADAVG_FILEPATH "/proc/loadavg"
  23
  24 int procfs_read_system_load_average(struct procfs_load_average_info *info)
  25 {
  26         float a1, a5, a15;
  27
  28         FILE *loadavg_fp = fopen(LOADAVG_FILEPATH, "r");
  29         if (!loadavg_fp) {
  30                 ERR("failed to open " LOADAVG_FILEPATH);
  31                 return -1;
  32         }
  33
  34         if (fscanf(loadavg_fp, "%f %f %f", &a1, &a5, &a15) != 3) {
  35                 ERR("failed to read " LOADAVG_FILEPATH);
  36                 fclose(loadavg_fp);
  37                 return -1;
  38         }
  39
  40         info->one_min_avg = a1;
  41         info->five_min_avg = a5;
  42         info->fifteen_min_avg = a15;
  43
  44         fclose(loadavg_fp);
  45
  46         return 0;
  47 }
  48
  49 int profcs_read_system_cpu_usage(struct procfs_system_cpu_usage_info *usage)
  50 {
  51         return -1;
  52 }
  53
  54 int profcs_read_system_percpu_usage(struct procfs_system_percpu_usage_info **usage)
  55 {
  56         return -1;
  57 }
  58
  59 int procfs_read_system_memory_usage(struct procfs_system_memory_usage_info *usage)
  60 {
  61         return -1;
  62 }
  63
  64 int procfs_read_process_memory_usage(int pid, struct procfs_process_memory_usage_info *usage)
  65 {
  66         return -1;
  67 }
  68
  69 int procfs_read_process_cpu_usage(int pid, struct procfs_process_cpu_usage_info *usage)
  70 {
  71         return -1;
  72 }
  73
  74 int procfs_read_uptime(int *uptime)
  75 {
  76         return -1;
  77 }
  78
  79 int procfs_read_cpu_count(int *cpu_count)
  80 {
  81         return -1;
  82 }