src/runtime_info.c

   1 /*
   2  *  aul
   3  *
   4  * Copyright (c) 2000 - 2014 Samsung Electronics Co., Ltd. All rights reserved.
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  * http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  *
  18  */
  19
  20 #define _GNU_SOURCE
  21 #include <stdio.h>
  22 #include <string.h>
  23 #include <stdlib.h>
  24 #include <fcntl.h>
  25 #include <sys/types.h>
  26 #include <sys/stat.h>
  27 #include <sys/sysinfo.h>
  28 #include <limits.h>
  29
  30 #include "aul.h"
  31 #include "aul_api.h"
  32 #include "simple_util.h"
  33 #include "aul_zone.h"
  34
  35 #define _MAX_STATUS_BUF_SIZE    64
  36 #define _MAX_STAT_BUF_SIZE              1024
  37
  38 static const char PROC_PROCESS_STATUS_INFO[] = "/proc/self/status";
  39 static const char PROC_KEY_PROCESS_MEMORY[] = "VmSize";
  40
  41 long long __get_process_running_time(pid_t pid)
  42 {
  43         char proc_path[_MAX_STAT_BUF_SIZE] = { 0, };
  44         char *line = NULL;
  45         ssize_t res = -1;
  46         int i = 0;
  47         char *str = NULL;
  48         char *token = NULL;
  49         char *saveptr = NULL;
  50         long long start_time = 0;
  51         long long running_time = 0;
  52
  53         if (pid == -1) //self
  54         {
  55                 _D("self");
  56                 snprintf(proc_path, sizeof(proc_path), "%sproc/self/stat", _get_root_path());
  57         }
  58         else if (pid > 0)
  59         {
  60                 SECURE_LOGD("pid: %d", pid);
  61                 snprintf(proc_path, sizeof(proc_path), "%sproc/%u/task", _get_root_path(), pid);
  62                 _E("Not supported");
  63                 return -1;
  64         }
  65         else
  66         {
  67                 _E("PID is invalid.");
  68                 return -1;
  69         }
  70
  71         int fd = open(proc_path, O_RDONLY);
  72         if (fd < 0)
  73         {
  74                 SECURE_LOGE("Openning %s is failed.", proc_path);
  75                 goto CATCH;
  76         }
  77
  78         line = (char *)calloc(_MAX_STAT_BUF_SIZE, sizeof(char));
  79         if (line == NULL)
  80         {
  81                 _E("The memory is insufficient.");
  82                 goto CATCH;
  83         }
  84
  85         res = read(fd, line, _MAX_STAT_BUF_SIZE - 1);
  86         if (res < 0)
  87         {
  88                 SECURE_LOGE("Reading %s is failed.", proc_path);
  89                 goto CATCH;
  90         }
  91         close(fd);
  92         fd = -1;
  93
  94         for (i = 0, str = line; ; ++i, str = NULL)
  95         {
  96                 token = strtok_r(str, " ", &saveptr);
  97                 if (token == NULL)
  98                 {
  99                         _E("There is no start time.");
 100                         goto CATCH;
 101                 }
 102
 103                 if (i == 21) //starttime
 104                 {
 105                         start_time = atoll(token);
 106                         SECURE_LOGD("Start time: %lld (ticks)", start_time);
 107                         break;
 108                 }
 109         }
 110         free(line);
 111         line = NULL;
 112
 113         {
 114                 struct sysinfo info;
 115                 sysinfo(&info);
 116                 long long sec_since_boot = (long long)info.uptime;
 117
 118                 start_time /= (long long)sysconf(_SC_CLK_TCK);
 119                 running_time = sec_since_boot - start_time;
 120
 121                 unsigned long mm = (unsigned long)running_time;
 122                 unsigned ss = mm % 60;
 123                 mm /= 60;
 124                 SECURE_LOGD("Running time: %lu:%02u", mm, ss);
 125         }
 126
 127         return running_time;
 128
 129 CATCH:
 130         if (fd >= 0)
 131         {
 132                 close(fd);
 133         }
 134         if (line != NULL)
 135         {
 136                 free(line);
 137         }
 138
 139         return -1;
 140 }
 141
 142 int __get_info_from_proc(const char* path, const char* key)
 143 {
 144         int value = 0;
 145
 146         char line[_MAX_STATUS_BUF_SIZE] = {0, };
 147         char field[_MAX_STATUS_BUF_SIZE] = {0, };
 148
 149         FILE* fp = fopen(path, "r");
 150         if (fp != NULL)
 151         {
 152                 while (fgets(line, _MAX_STATUS_BUF_SIZE, fp))
 153                 {
 154                         if (sscanf(line, "%s %d", field, &value) != EOF)
 155                         {
 156                                 if (strncmp(field, key, strlen(key)) == 0)
 157                                 {
 158                                         if (value > (INT_MAX / 1024)) {
 159                                                 value = INT_MAX / 1024;
 160                                         }
 161
 162                                         SECURE_LOGD("PROC %s VALUE: %d\n", field, value * 1024);
 163
 164                                         fclose(fp);
 165
 166                                         return value * 1024;;
 167                                 }
 168                         }
 169                 }
 170
 171                 fclose(fp);
 172         }
 173
 174         return -1;
 175 }
 176
 177 SLPAPI int aul_get_app_allocated_memory(void)
 178 {
 179         char buf[_MAX_STAT_BUF_SIZE] = {0, };
 180
 181         snprintf(buf, _MAX_STAT_BUF_SIZE - 1, "%s%s", _get_root_path(),
 182                  PROC_PROCESS_STATUS_INFO);
 183         return __get_info_from_proc(buf, PROC_KEY_PROCESS_MEMORY);
 184 }
 185
 186 SLPAPI long long aul_get_app_running_time(void)
 187 {
 188         return __get_process_running_time(-1);
 189 }