src/runtime_info_usage.c

   1 /*
   2  * Copyright (c) 2015 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  * Licensed under the Apache License, Version 2.0 (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://www.apache.org/licenses/LICENSE-2.0
   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 #include <string.h>
  19 #include <unistd.h>
  20
  21 #include <dlog.h>
  22
  23 #include <runtime_info.h>
  24 #include <runtime_info_private.h>
  25
  26 #include <E_DBus.h>
  27
  28 #ifdef LOG_TAG
  29 #undef LOG_TAG
  30 #endif
  31 #define LOG_TAG "CAPI_RUNTIME_INFO_USAGE"
  32
  33 #define _E(fmt, arg...) LOGE("[%s,%d] "fmt, __FUNCTION__, __LINE__, ##arg)
  34 #define _D(fmt, arg...) LOGD("[%s,%d] "fmt, __FUNCTION__, __LINE__, ##arg)
  35 #define _I(fmt, arg...) LOGI("[%s,%d] "fmt, __FUNCTION__, __LINE__, ##arg)
  36
  37 #define RESOURCED_BUS_NAME "org.tizen.resourced"
  38 #define RESOURCED_USAGE_OBJECT_NAME "/Org/Tizen/ResourceD/Process"
  39 #define RESOURCED_USAGE_INTERFACE_NAME "org.tizen.resourced.process"
  40 #define RESOURCED_MEMORY_USAGE_METHOD "ProcMemoryUsage"
  41 #define RESOURCED_CPU_USAGE_METHOD "ProcCpuUsage"
  42 #define DBUS_REPLY_TIMEOUT (120 * 1000)
  43 #define MEMORY_USAGE 1
  44 #define CPU_USAGE 2
  45
  46 #define kBtoKiB(val) (int)(((long long)val * 1024)/1000)
  47
  48 static int runtime_info_get_dbus_error(const char *err_name)
  49 {
  50         int size;
  51
  52         if (!err_name)
  53                 return RUNTIME_INFO_ERROR_INVALID_PARAMETER;
  54
  55         size = strlen(err_name);
  56         if (!strncmp(err_name, DBUS_ERROR_IO_ERROR, size))
  57                 return RUNTIME_INFO_ERROR_IO_ERROR;
  58         else if (!strncmp(err_name, DBUS_ERROR_NO_MEMORY, size))
  59                 return RUNTIME_INFO_ERROR_OUT_OF_MEMORY;
  60         else if (!strncmp(err_name, DBUS_ERROR_ACCESS_DENIED, size))
  61                 return RUNTIME_INFO_ERROR_PERMISSION_DENIED;
  62         else
  63                 return RUNTIME_INFO_ERROR_REMOTE_IO;
  64 }
  65
  66 /* Handler function which handles dbus related instructions
  67  * for both per process memory and cpu requests.
  68  * Creates the method call to resourced and receives the reply (if successful)
  69  * Return the received reply (if received) else NULL to signify failed call to resourced
  70  */
  71 static DBusMessage *runtime_info_dbus_process_usage_info(int *pid, int size, int info, int *error)
  72 {
  73         DBusConnection *conn;
  74         DBusMessage *msg;
  75         DBusMessage *reply;
  76         DBusError err;
  77         int ret;
  78
  79         if (!pid || !error) {
  80                 _E("INVALID_PARAMETER(0x%08x): pid list and error params cannot be null");
  81
  82                 if (error)
  83                         *error = RUNTIME_INFO_ERROR_INVALID_PARAMETER;
  84                 return NULL;
  85         }
  86
  87         conn = dbus_bus_get(DBUS_BUS_SYSTEM, NULL);
  88         if (!conn) {
  89                 _E("DBUS_CONNECTION_ERROR");
  90                 *error = RUNTIME_INFO_ERROR_REMOTE_IO;
  91                 return NULL;
  92         }
  93
  94         if (info == MEMORY_USAGE) {
  95                 _D("Process %d: received query to get process memory info of %d processes",
  96                                 getpid(), size);
  97                 msg = dbus_message_new_method_call(RESOURCED_BUS_NAME,
  98                                 RESOURCED_USAGE_OBJECT_NAME,
  99                                 RESOURCED_USAGE_INTERFACE_NAME,
 100                                 RESOURCED_MEMORY_USAGE_METHOD);
 101         } else if (info == CPU_USAGE) {
 102                 _D("Process %d: received query to get process cpu usage of %d processes",
 103                                 getpid(), size);
 104                 msg = dbus_message_new_method_call(RESOURCED_BUS_NAME,
 105                                 RESOURCED_USAGE_OBJECT_NAME,
 106                                 RESOURCED_USAGE_INTERFACE_NAME,
 107                                 RESOURCED_CPU_USAGE_METHOD);
 108         } else {
 109                 _E("INVALID_PARAMETER(0x%08x): info parameter should be %d or %d",
 110                                 MEMORY_USAGE, CPU_USAGE, RUNTIME_INFO_ERROR_INVALID_PARAMETER);
 111                 *error = RUNTIME_INFO_ERROR_INVALID_PARAMETER;
 112                 return NULL;
 113         }
 114
 115         if (!msg) {
 116                 _E("DBUS_METHOD_CALL: not able to create method call (%s:%s-%s)",
 117                                 RESOURCED_USAGE_OBJECT_NAME, RESOURCED_USAGE_INTERFACE_NAME,
 118                                 RESOURCED_MEMORY_USAGE_METHOD);
 119                 *error = RUNTIME_INFO_ERROR_OUT_OF_MEMORY;
 120                 return NULL;
 121         }
 122
 123         ret = dbus_message_append_args(msg, DBUS_TYPE_ARRAY, DBUS_TYPE_INT32, &pid,
 124                         size, DBUS_TYPE_INVALID);
 125         if (!ret) {
 126                 _E("DBUS_METHOD_CALL: not able to append pid array to message");
 127                 *error = RUNTIME_INFO_ERROR_IO_ERROR;
 128                 dbus_message_unref(msg);
 129                 return NULL;
 130         }
 131
 132         dbus_error_init(&err);
 133         *error = 0;
 134
 135         if (info == MEMORY_USAGE)
 136                 _D("Process %d: Sending dbus message to resourced for process memory usage info",
 137                                 getpid());
 138         else
 139                 _D("Process %d: Sending dbus message to resourced for process cpu usage info",
 140                                 getpid());
 141         reply = dbus_connection_send_with_reply_and_block(conn, msg,
 142                         DBUS_REPLY_TIMEOUT, &err);
 143         if (!reply)
 144                 _E("DBUS_METHOD_CALL: not able to send message");
 145
 146         if (dbus_error_is_set(&err)) {
 147                 _E("DBUS_METHOD_CALL: dbus_connection_send error(%s:%s)", err.name, err.message);
 148                 *error = runtime_info_get_dbus_error(err.name);
 149                 dbus_error_free(&err);
 150                 reply = NULL;
 151         }
 152
 153         dbus_message_unref(msg);
 154         return reply;
 155 }
 156
 157 API int runtime_info_get_system_memory_info(runtime_memory_info_s *info)
 158 {
 159         FILE *meminfo_fp;
 160         char buf[256];
 161         unsigned long swap_total, swap_free, value;
 162
 163         if (info == NULL) {
 164                 _E("INVALID_PARAMETER(0x%08x) : invalid output param",
 165                                 RUNTIME_INFO_ERROR_INVALID_PARAMETER);
 166                 return RUNTIME_INFO_ERROR_INVALID_PARAMETER;
 167         }
 168
 169         swap_total = swap_free = 0;
 170
 171         meminfo_fp = fopen("/proc/meminfo", "r");
 172         if (meminfo_fp == NULL) {
 173                 _E("IO_ERROR(0x%08x) : failed to open file to read memory usage",
 174                                 RUNTIME_INFO_ERROR_IO_ERROR);
 175                 return RUNTIME_INFO_ERROR_IO_ERROR;
 176         }
 177
 178         while (fgets(buf, sizeof(buf), meminfo_fp) != NULL) {
 179                 if (sscanf(buf, "MemTotal: %lu", &value) == 1)
 180                         info->total = kBtoKiB(value);
 181                 else if (sscanf(buf, "MemFree: %lu", &value) == 1)
 182                         info->free = kBtoKiB(value);
 183                 else if (sscanf(buf, "Cached: %lu", &value) == 1)
 184                         info->cache = kBtoKiB(value);
 185                 else if (sscanf(buf, "SwapTotal: %lu", &value) == 1)
 186                         swap_total = value;
 187                 else if (sscanf(buf, "SwapFree: %lu", &value) == 1)
 188                         swap_free = value;
 189         }
 190         fclose(meminfo_fp);
 191
 192         info->used = (info->total > info->free) ? (info->total - info->free) : 0;
 193         info->swap = kBtoKiB(((swap_total > swap_free) ? (int)(swap_total - swap_free) : 0));
 194
 195         return RUNTIME_INFO_ERROR_NONE;
 196 }
 197
 198 API int runtime_info_get_process_memory_info(int *pid, int size, process_memory_info_s **info)
 199 {
 200         DBusMessageIter iter, iter_array, iter_struct;
 201         int index, value;
 202         int error;
 203         process_memory_info_s *proc_info;
 204         DBusMessage *replymsg;
 205
 206         if (!pid || size <= 0) {
 207                 _E("INVALID_PARAMETER(0x%08x) : invalid input param",
 208                                 RUNTIME_INFO_ERROR_INVALID_PARAMETER);
 209                 return RUNTIME_INFO_ERROR_INVALID_PARAMETER;
 210         }
 211
 212         if (!info) {
 213                 _E("INVALID_PARAMETER(0x%08x) : invalid output param",
 214                                 RUNTIME_INFO_ERROR_INVALID_PARAMETER);
 215                 return RUNTIME_INFO_ERROR_INVALID_PARAMETER;
 216         }
 217
 218         *info = NULL;
 219
 220         /* Get the needed information from resourced daemon using dbus */
 221         replymsg = runtime_info_dbus_process_usage_info(pid, size, MEMORY_USAGE, &error);
 222         if (!replymsg) {
 223                 _E("DBUS_METHOD_CALL: call to resourced not successful");
 224                 return error;
 225         }
 226
 227         /* Check if the message is an error message or not in expected
 228          * format and return error value */
 229         dbus_message_iter_init(replymsg, &iter);
 230         if (dbus_message_iter_get_arg_type(&iter) == DBUS_TYPE_INT32) {
 231                 dbus_message_iter_get_basic(&iter, &error);
 232                 _E("DBUS_METHOD_CALL: call to resourced returned error message");
 233                 dbus_message_unref(replymsg);
 234                 return error;
 235         } else if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY) {
 236                 _E("DBUS_METHOD_CALL: received dbus message is not in expected format");
 237                 dbus_message_unref(replymsg);
 238                 return RUNTIME_INFO_ERROR_REMOTE_IO;
 239         }
 240
 241         /* Populate the entries of info array using the data received from resourced */
 242         *info = (process_memory_info_s *)malloc(size * sizeof(process_memory_info_s));
 243         if (!info) {
 244                 _E("OUT_OF_MEMORY(0x%08x)", RUNTIME_INFO_ERROR_OUT_OF_MEMORY);
 245                 dbus_message_unref(replymsg);
 246                 return RUNTIME_INFO_ERROR_OUT_OF_MEMORY;
 247         }
 248
 249         dbus_message_iter_recurse(&iter, &iter_array);
 250         for (index = 0; index < size; ++index) {
 251                 proc_info = &(*info)[index];
 252
 253                 dbus_message_iter_recurse(&iter_array, &iter_struct);
 254
 255                 dbus_message_iter_get_basic(&iter_struct, &value);
 256                 proc_info->vsz = value;
 257                 dbus_message_iter_next(&iter_struct);
 258                 dbus_message_iter_get_basic(&iter_struct, &value);
 259                 proc_info->rss = value;
 260                 dbus_message_iter_next(&iter_struct);
 261                 dbus_message_iter_get_basic(&iter_struct, &value);
 262                 proc_info->pss = value;
 263                 dbus_message_iter_next(&iter_struct);
 264                 dbus_message_iter_get_basic(&iter_struct, &value);
 265                 proc_info->shared_clean = value;
 266                 dbus_message_iter_next(&iter_struct);
 267                 dbus_message_iter_get_basic(&iter_struct, &value);
 268                 proc_info->shared_dirty = value;
 269                 dbus_message_iter_next(&iter_struct);
 270                 dbus_message_iter_get_basic(&iter_struct, &value);
 271                 proc_info->private_clean = value;
 272                 dbus_message_iter_next(&iter_struct);
 273                 dbus_message_iter_get_basic(&iter_struct, &value);
 274                 proc_info->private_dirty = value;
 275
 276                 dbus_message_iter_next(&iter_array);
 277         }
 278
 279         dbus_message_unref(replymsg);
 280         return RUNTIME_INFO_ERROR_NONE;
 281 }
 282
 283 API int runtime_info_get_cpu_usage(runtime_cpu_usage_s *usage)
 284 {
 285         FILE *cpuinfo_fp;
 286         char buf[256];
 287         unsigned long long user, nice, system, idle, iowait, irq, softirq, total_uptime;
 288
 289         if (usage == NULL) {
 290                 _E("INVALID_PARAMETER(0x%08x) : invalid output param",
 291                                 RUNTIME_INFO_ERROR_INVALID_PARAMETER);
 292                 return RUNTIME_INFO_ERROR_INVALID_PARAMETER;
 293         }
 294
 295         cpuinfo_fp = fopen("/proc/stat", "r");
 296         if (cpuinfo_fp == NULL) {
 297                 _E("IO_ERROR(0x%08x) : failed to open file to read cpu usage",
 298                                 RUNTIME_INFO_ERROR_IO_ERROR);
 299                 return RUNTIME_INFO_ERROR_IO_ERROR;
 300         }
 301
 302         while (fgets(buf, sizeof(buf), cpuinfo_fp) != NULL) {
 303                 if (!strncmp(buf, "cpu ", 4) &&
 304                     sscanf(buf+4, "%llu %llu %llu %llu %llu %llu %llu",
 305                                 &user, &nice, &system, &idle,
 306                                 &iowait, &irq, &softirq) == 7)
 307                         break;
 308         }
 309         fclose(cpuinfo_fp);
 310
 311         total_uptime = user+nice+system+idle+iowait+irq+softirq;
 312
 313         usage->user = (double)user*100/total_uptime;
 314         usage->nice = (double)nice*100/total_uptime;
 315         usage->system = (double)system*100/total_uptime;
 316         usage->iowait = (double)iowait*100/total_uptime;
 317
 318         return RUNTIME_INFO_ERROR_NONE;
 319 }
 320
 321 API int runtime_info_get_process_cpu_usage(int *pid, int size, process_cpu_usage_s **usage)
 322 {
 323         DBusMessageIter iter, iter_array, iter_struct;
 324         int index, value;
 325         int error;
 326         process_cpu_usage_s *proc_usage;
 327         DBusMessage *replymsg;
 328
 329         if (!pid || size <= 0) {
 330                 _E("INVALID_PARAMETER(0x%08x) : invalid input param",
 331                                 RUNTIME_INFO_ERROR_INVALID_PARAMETER);
 332                 return RUNTIME_INFO_ERROR_INVALID_PARAMETER;
 333         }
 334
 335         if (!usage) {
 336                 _E("INVALID_PARAMETER(0x%08x) : invalid output param",
 337                                 RUNTIME_INFO_ERROR_INVALID_PARAMETER);
 338                 return RUNTIME_INFO_ERROR_INVALID_PARAMETER;
 339         }
 340
 341         *usage = NULL;
 342
 343         /* Get the needed information from resourced daemon using dbus */
 344         replymsg = runtime_info_dbus_process_usage_info(pid, size, CPU_USAGE, &error);
 345         if (!replymsg) {
 346                 _E("DBUS_METHOD_CALL: call to resourced not successful");
 347                 return error;
 348         }
 349
 350         /* Check if the message is an error message or not in expected format
 351          * and return error value */
 352         dbus_message_iter_init(replymsg, &iter);
 353         if (dbus_message_iter_get_arg_type(&iter) == DBUS_TYPE_INT32) {
 354                 dbus_message_iter_get_basic(&iter, &error);
 355                 _E("DBUS_METHOD_CALL: call to resourced returned error message");
 356                 dbus_message_unref(replymsg);
 357                 return error;
 358         } else if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY) {
 359                 _E("DBUS_METHOD_CALL: received dbus message is not in expected format");
 360                 dbus_message_unref(replymsg);
 361                 return RUNTIME_INFO_ERROR_REMOTE_IO;
 362         }
 363
 364         /* Populate the entries of info array using the data received from resourced */
 365         *usage = (process_cpu_usage_s *)malloc(size * sizeof(process_cpu_usage_s));
 366         if (!(*usage)) {
 367                 _E("OUT_OF_MEMORY(0x%08x)", RUNTIME_INFO_ERROR_OUT_OF_MEMORY);
 368                 dbus_message_unref(replymsg);
 369                 return RUNTIME_INFO_ERROR_OUT_OF_MEMORY;
 370         }
 371
 372         dbus_message_iter_recurse(&iter, &iter_array);
 373         for (index = 0; index < size; ++index) {
 374                 proc_usage = &(*usage)[index];
 375
 376                 dbus_message_iter_recurse(&iter_array, &iter_struct);
 377
 378                 dbus_message_iter_get_basic(&iter_struct, &value);
 379                 proc_usage->utime = value;
 380                 dbus_message_iter_next(&iter_struct);
 381                 dbus_message_iter_get_basic(&iter_struct, &value);
 382                 proc_usage->stime = value;
 383
 384                 dbus_message_iter_next(&iter_array);
 385         }
 386
 387         dbus_message_unref(replymsg);
 388         return RUNTIME_INFO_ERROR_NONE;
 389 }