Read cpuinfo to get CPU frequency when cpufreq isn't supported

[platform/core/api/runtime-info.git] / src / runtime_info_usage.c

diff --git a/src/runtime_info_usage.c b/src/runtime_info_usage.c
index e9b9b73..d03e565 100644 (file)
--- a/src/runtime_info_usage.c
+++ b/src/runtime_info_usage.c
@@ -25,15 +25,6 @@
 
 #include <E_DBus.h>
 
-#ifdef LOG_TAG
-#undef LOG_TAG
-#endif
-#define LOG_TAG "CAPI_RUNTIME_INFO_USAGE"
-
-#define _E(fmt, arg...) LOGE("[%s,%d] "fmt, __FUNCTION__, __LINE__, ##arg)
-#define _D(fmt, arg...) LOGD("[%s,%d] "fmt, __FUNCTION__, __LINE__, ##arg)
-#define _I(fmt, arg...) LOGI("[%s,%d] "fmt, __FUNCTION__, __LINE__, ##arg)
-
 #define RESOURCED_BUS_NAME "org.tizen.resourced"
 #define RESOURCED_USAGE_OBJECT_NAME "/Org/Tizen/ResourceD/Process"
 #define RESOURCED_USAGE_INTERFACE_NAME "org.tizen.resourced.process"
@@ -423,11 +414,9 @@ API int runtime_info_get_processor_count(int *num_core)
 API int runtime_info_get_processor_current_frequency(int core_idx, int *cpu_freq)
 {
        int num_core;
-       char path[256];
-       FILE *cpuinfo_fp;
-       int result;
 
-       if (runtime_info_get_processor_count(&num_core)) {
+       if (runtime_info_get_processor_count(&num_core)
+                       != RUNTIME_INFO_ERROR_NONE) {
                _E("runtime_info_get_processor_count is failed");
                return RUNTIME_INFO_ERROR_IO_ERROR;
        }
@@ -444,42 +433,32 @@ API int runtime_info_get_processor_current_frequency(int core_idx, int *cpu_freq
                return RUNTIME_INFO_ERROR_INVALID_PARAMETER;
        }
 
-       snprintf(path, sizeof(path), "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_cur_freq",
-                       core_idx);
-       cpuinfo_fp = fopen(path, "r");
-       if (cpuinfo_fp == NULL) {
-               _I("Fail to get the information about core%d. Get the core0's instead.",
-                               core_idx);
+       if (runtime_info_get_frequency_cpufreq(core_idx, "cur", cpu_freq)
+                       != RUNTIME_INFO_ERROR_NONE) {
+               _I("This system doesn't support cpufreq. Use cpuinfo instead.");
 
-               cpuinfo_fp = fopen("/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq", "r");
-               if (cpuinfo_fp == NULL) {
-                       _E("IO_ERROR(0x%08x) : failed to open file to read cpu information",
-                                       RUNTIME_INFO_ERROR_IO_ERROR);
+               switch (runtime_info_get_frequency_cpuinfo(core_idx, cpu_freq)) {
+               case RUNTIME_INFO_ERROR_NONE:
+                       _I("Notice : it is max CPU frequency");
+                       break;
+               case RUNTIME_INFO_ERROR_NOT_SUPPORTED:
+                       _E("This system doesn't support MHz information in the cpuinfo");
+                       return RUNTIME_INFO_ERROR_NOT_SUPPORTED;
+               default:
+                       _E("Fail to get current CPU frequency");
                        return RUNTIME_INFO_ERROR_IO_ERROR;
-               }
+               };
        }
 
-       if (!fscanf(cpuinfo_fp, "%d", &result)) {
-               _E("IO_ERROR(0x%08x) : there is no information in the system file",
-                               RUNTIME_INFO_ERROR_IO_ERROR);
-               fclose(cpuinfo_fp);
-               return RUNTIME_INFO_ERROR_IO_ERROR;
-       }
-
-       *cpu_freq = result / 1000;
-
-       fclose(cpuinfo_fp);
        return RUNTIME_INFO_ERROR_NONE;
 }
 
 API int runtime_info_get_processor_max_frequency(int core_idx, int *cpu_freq)
 {
        int num_core;
-       char path[256];
-       FILE *cpuinfo_fp;
-       int result;
 
-       if (runtime_info_get_processor_count(&num_core)) {
+       if (runtime_info_get_processor_count(&num_core)
+                       != RUNTIME_INFO_ERROR_NONE) {
                _E("runtime_info_get_processor_count is failed");
                return RUNTIME_INFO_ERROR_IO_ERROR;
        }
@@ -496,30 +475,21 @@ API int runtime_info_get_processor_max_frequency(int core_idx, int *cpu_freq)
                return RUNTIME_INFO_ERROR_INVALID_PARAMETER;
        }
 
-       snprintf(path, sizeof(path), "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_max_freq",
-                       core_idx);
-       cpuinfo_fp = fopen(path, "r");
-       if (cpuinfo_fp == NULL) {
-               _I("Fail to get the information about core%d. Get the core0's instead.",
-                               core_idx);
+       if (runtime_info_get_frequency_cpufreq(core_idx, "max", cpu_freq)
+                       != RUNTIME_INFO_ERROR_NONE) {
+               _I("This system doesn't support cpufreq. Use cpuinfo instead.");
 
-               cpuinfo_fp = fopen("/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq", "r");
-               if (cpuinfo_fp == NULL) {
-                       _E("IO_ERROR(0x%08x) : failed to open file to read cpu information",
-                                       RUNTIME_INFO_ERROR_IO_ERROR);
+               switch (runtime_info_get_frequency_cpuinfo(core_idx, cpu_freq)) {
+               case RUNTIME_INFO_ERROR_NONE:
+                       break;
+               case RUNTIME_INFO_ERROR_NOT_SUPPORTED:
+                       _E("This system doesn't support MHz information in the cpuinfo");
+                       return RUNTIME_INFO_ERROR_NOT_SUPPORTED;
+               default:
+                       _E("Fail to get current CPU frequency");
                        return RUNTIME_INFO_ERROR_IO_ERROR;
-               }
+               };
        }
 
-       if (!fscanf(cpuinfo_fp, "%d", &result)) {
-               _E("IO_ERROR(0x%08x) : there is no information in the system file",
-                               RUNTIME_INFO_ERROR_IO_ERROR);
-               fclose(cpuinfo_fp);
-               return RUNTIME_INFO_ERROR_IO_ERROR;
-       }
-
-       *cpu_freq = result / 1000;
-
-       fclose(cpuinfo_fp);
        return RUNTIME_INFO_ERROR_NONE;
 }