The Runtime Information API provides functions to obtain runtime information.

Required Header

#include <runtime_info.h>

Overview

The Runtime Information API provides functions to obtain runtime information, containing miscellaneous system preference. The Runtime Information available is stored in key/value pairs, where there may be different data types for the value. The runtime_info_set_changed_cb() registers a callback function for a particular key, which will be invoked by the System Service if the state matching that key changes.

Functions
int	runtime_info_get_value_int (runtime_info_key_e key, int *value)
	Gets the integer value of the runtime information.
int	runtime_info_get_value_bool (runtime_info_key_e key, bool *value)
	Gets the boolean value from the runtime information.
int	runtime_info_get_value_double (runtime_info_key_e key, double *value)
	Gets the double value from the runtime information.
int	runtime_info_get_value_string (runtime_info_key_e key, char **value)
	Gets the string value for specified runtime information.
int	runtime_info_set_changed_cb (runtime_info_key_e key, runtime_info_changed_cb callback, void *user_data)
	Registers a change event callback for given runtime information key.
int	runtime_info_unset_changed_cb (runtime_info_key_e key)
	Unregisters the callback function.
int	runtime_info_get_system_memory_info (runtime_memory_info_s *info)
	Gets system memory information.
int	runtime_info_get_process_memory_info (int pid, int size, process_memory_info_s *info)
	Gets memory information per process.
int	runtime_info_get_cpu_usage (runtime_cpu_usage_s *usage)
	Gets CPU information.
int	runtime_info_get_process_cpu_usage (int pid, int size, process_cpu_usage_s *usage)
	Gets CPU usage per process.
int	runtime_info_get_processor_count (int *num_core)
	Gets the number of processors.
int	runtime_info_get_processor_current_frequency (int core_idx, int *cpu_freq)
	Gets the current frequency of processor.
int	runtime_info_get_processor_max_frequency (int core_idx, int *cpu_freq)
	Gets the max frequency of processor.
int	runtime_info_get_physical_memory_size (int *size)
	Gets the physical memory size.
int	runtime_info_app_usage_destroy (app_usage_h handle)
	Frees an app usage handle.
int	runtime_info_app_usage_get_count (app_usage_h handle, int *count)
	Gets the app count from an app usage handle.
int	runtime_info_app_usage_get_appid (app_usage_h handle, int index, char **appid)
	Gets the app ID from an app usage handle.
int	runtime_info_app_usage_get_usage (app_usage_h handle, int index, unsigned int *usage)
	Gets resource usage from an app usage handle.
int	runtime_info_get_all_apps_memory_usage (app_usage_h *usage)
	Gets memory usage of all apps.
int	runtime_info_get_all_apps_cpu_rate (app_usage_h *rate)
	Gets CPU rate of all apps.
Typedefs
typedef void(*	runtime_info_changed_cb )(runtime_info_key_e key, void *user_data)
	Called when the runtime information changes.
typedef struct app_usages_s *	app_usage_h
	Handle for app usage information.

Typedef Documentation

typedef struct app_usages_s* app_usage_h

Handle for app usage information.

Since :: 4.0

typedef void(* runtime_info_changed_cb)(runtime_info_key_e key, void *user_data)

Called when the runtime information changes.

Since :: 2.3.1

Parameters:

[in]	key	The type of notification
[in]	user_data	The user data passed from the callback registration function

Precondition:: runtime_info_set_changed_cb() will invoke this callback function.

See also:: runtime_info_set_changed_cb(); runtime_info_unset_changed_cb()

Enumeration Type Documentation

enum runtime_info_audio_jack_status_e

Enumeration for audio jack status.

Since :: 2.3.1

Enumerator:

RUNTIME_INFO_AUDIO_JACK_STATUS_UNCONNECTED	Audio jack is not connected
RUNTIME_INFO_AUDIO_JACK_STATUS_CONNECTED_3WIRE	3-conductor wire is connected.
RUNTIME_INFO_AUDIO_JACK_STATUS_CONNECTED_4WIRE	4-conductor wire is connected.

enum runtime_info_error_e

Enumeration for error codes for runtime information.

Since :: 2.3.1

Enumerator:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter
RUNTIME_INFO_ERROR_OUT_OF_MEMORY	Out of memory
RUNTIME_INFO_ERROR_IO_ERROR	An input/output error occurred when read value from system
RUNTIME_INFO_ERROR_REMOTE_IO	Remote I/O error occurred
RUNTIME_INFO_ERROR_PERMISSION_DENIED	No permission to use the api
RUNTIME_INFO_ERROR_NOT_SUPPORTED	Not supported parameter
RUNTIME_INFO_ERROR_NO_DATA	No data available (Since 3.0)

enum runtime_info_gps_status_e

Enumeration for GPS status.

Since :: 2.3.1

Enumerator:

RUNTIME_INFO_GPS_STATUS_DISABLED	GPS is disabled.
RUNTIME_INFO_GPS_STATUS_SEARCHING	GPS is searching for satellites.
RUNTIME_INFO_GPS_STATUS_CONNECTED	GPS connection is established.

enum runtime_info_key_e

Enumeration for keys for runtime information.

Since :: 2.3.1

Remarks:: ~10000 : public key
10001~ : product specific key

Enumerator:

RUNTIME_INFO_KEY_BLUETOOTH_ENABLED	Indicates whether Bluetooth is enabled.
RUNTIME_INFO_KEY_WIFI_HOTSPOT_ENABLED	Indicates whether Wi-Fi hotspot is enabled.
RUNTIME_INFO_KEY_BLUETOOTH_TETHERING_ENABLED	Indicates whether Bluetooth tethering is enabled.
RUNTIME_INFO_KEY_USB_TETHERING_ENABLED	Indicates whether USB tethering is enabled.
RUNTIME_INFO_KEY_PACKET_DATA_ENABLED	Indicates Whether the packet data through 3G network is enabled.
RUNTIME_INFO_KEY_DATA_ROAMING_ENABLED	Indicates whether data roaming is enabled.
RUNTIME_INFO_KEY_VIBRATION_ENABLED	Indicates whether vibration is enabled.
RUNTIME_INFO_KEY_AUDIO_JACK_CONNECTED	Indicates whether audio jack is connected.
RUNTIME_INFO_KEY_GPS_STATUS	Indicates the current status of GPS.
RUNTIME_INFO_KEY_BATTERY_IS_CHARGING	Indicates the battery is currently charging.
RUNTIME_INFO_KEY_TV_OUT_CONNECTED	Indicates whether TV out is connected.
RUNTIME_INFO_KEY_AUDIO_JACK_STATUS	Indicates the current status of audio jack.
RUNTIME_INFO_KEY_USB_CONNECTED	Indicates whether USB is connected.
RUNTIME_INFO_KEY_CHARGER_CONNECTED	Indicates whether charger is connected.
RUNTIME_INFO_KEY_AUTO_ROTATION_ENABLED	Indicates whether auto rotation is enabled.

enum runtime_info_wifi_status_e

Enumeration for Wi-Fi status.

Since :: 2.3.1

Enumerator:

RUNTIME_INFO_WIFI_STATUS_DISABLED	Wi-Fi is disabled.
RUNTIME_INFO_WIFI_STATUS_UNCONNECTED	Wi-Fi is enabled and network connection is not established.
RUNTIME_INFO_WIFI_STATUS_CONNECTED	Network connection is established in Wi-Fi network.

Function Documentation

int runtime_info_app_usage_destroy ( app_usage_h handle )

Frees an app usage handle.

Since :: 4.0

Parameters:

[in] handle App usage handle to free

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter

int runtime_info_app_usage_get_appid	(	app_usage_h	handle,
		int	index,
		char **	appid
	)

Gets the app ID from an app usage handle.

Since :: 4.0

Remarks:: You must release appid using free().

Parameters:

[in]	handle	The app usage handle
[in]	index	The index in the app list; should be between 0 and count - 1 (inclusive), where count is provided by runtime_info_app_usage_get_count()
[out]	appid	The app ID

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: runtime_info_get_all_apps_memory_usage(); runtime_info_get_all_apps_cpu_rate()

int runtime_info_app_usage_get_count	(	app_usage_h	handle,
		int *	count
	)

Gets the app count from an app usage handle.

Since :: 4.0

Parameters:

[in]	handle	The app usage handle
[out]	count	The number of apps on the app list

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: runtime_info_get_all_apps_memory_usage(); runtime_info_get_all_apps_cpu_rate()

int runtime_info_app_usage_get_usage	(	app_usage_h	handle,
		int	index,
		unsigned int *	usage
	)

Gets resource usage from an app usage handle.

Since :: 4.0

Remarks:: The meaning of usage depends on which function was used to create handle.

Parameters:

[in]	handle	The app usage handle
[in]	index	The index in the app list; should be between 0 and count - 1 (inclusive), where count is provided by runtime_info_app_usage_get_count()
[out]	usage	Resource usage

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: runtime_info_get_all_apps_memory_usage(); runtime_info_get_all_apps_cpu_rate()

int runtime_info_get_all_apps_cpu_rate ( app_usage_h * rate )

Gets CPU rate of all apps.

Since :: 4.0

Privilege Level:: public

Privilege:: http://tizen.org/privilege/systemmonitor

Remarks:: You must release rate using runtime_info_app_usage_destroy().

Parameters:

[out] rate An array of each app's CPU usage rate (%), the values are rounded down.

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter
RUNTIME_INFO_ERROR_OUT_OF_MEMORY	Not able to allocate memory (for output param/other operations)
RUNTIME_INFO_ERROR_REMOTE_IO	Call to resource daemon failed (dbus errors/resource daemon errors)
RUNTIME_INFO_ERROR_IO_ERROR	An I/O error during dbus message operations
RUNTIME_INFO_ERROR_PERMISSION_DENIED	Process not authorized to request app usage info
RUNTIME_INFO_ERROR_NO_DATA	No app running

 #include <runtime_info.h>

 void print_cpu_usage(void)
 {
     int i;
     int count;
     app_usage_h cpu_rate_handle;
     char *appid;
     unsigned int rate;

     runtime_info_get_all_apps_cpu_rate(&cpu_rate_handle);
     runtime_info_app_usage_get_count(cpu_rate_handle, &count);

     for (i = 0; i < count; i++) {
         runtime_info_app_usage_get_appid(cpu_rate_handle, i, &appid);
         runtime_info_app_usage_get_usage(cpu_rate_handle, i, &rate);
         printf("appid = %s, rate = %u %%\n", appid, rate);
         free(appid);
     }

     runtime_info_app_usage_destroy(cpu_rate_handle);

 }

int runtime_info_get_all_apps_memory_usage ( app_usage_h * usage )

Gets memory usage of all apps.

Since :: 4.0

Privilege Level:: public

Privilege:: http://tizen.org/privilege/systemmonitor

Remarks:: You must release usage using runtime_info_app_usage_destroy().

Parameters:

[out] usage An array of each app's memory usage (KB)

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter
RUNTIME_INFO_ERROR_OUT_OF_MEMORY	Not able to allocate memory (for output param/other operations)
RUNTIME_INFO_ERROR_REMOTE_IO	Call to resource daemon failed (dbus errors/resource daemon errors)
RUNTIME_INFO_ERROR_IO_ERROR	An I/O error during dbus message operations
RUNTIME_INFO_ERROR_PERMISSION_DENIED	Process not authorized to request app usage info
RUNTIME_INFO_ERROR_NO_DATA	No app running

 #include <runtime_info.h>

 void print_memory_usage(void)
 {
     int i;
     int count;
     app_usage_h mem_usage_handle;
     char *appid;
     unsigned int usage;

     runtime_info_get_all_apps_memory_usage(&mem_usage_handle);
     runtime_info_app_usage_get_count(mem_usage_handle, &count);

     for (i = 0; i < count; i++) {
         runtime_info_app_usage_get_appid(mem_usage_handle, i, &appid);
         runtime_info_app_usage_get_usage(mem_usage_handle, i, &usage);
         printf("appid = %s, usage = %u KB\n", appid, usage);
         free(appid);
     }

     runtime_info_app_usage_destroy(mem_usage_handle);

 }

int runtime_info_get_cpu_usage ( runtime_cpu_usage_s * usage )

Gets CPU information.

Since :: 3.0

Parameters:

[out] usage The CPU usage structure

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter
RUNTIME_INFO_ERROR_IO_ERROR	An input/output error occurred while reading from system

See also:: runtime_info_get_process_cpu_usage()

int runtime_info_get_physical_memory_size ( int * size )

Gets the physical memory size.

Since :: 4.0

Parameters:

[out] size Physical memory size (KiB)

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter
RUNTIME_INFO_ERROR_IO_ERROR	An I/O error occurred (during file open operation)

int runtime_info_get_process_cpu_usage	(	int *	pid,
		int	size,
		process_cpu_usage_s **	usage
	)

Gets CPU usage per process.

Since :: 3.0

Privilege Level:: public

Privilege:: http://tizen.org/privilege/systemmonitor

Remarks:: You must release s value using free().
The size of s is the same with size.

Parameters:

[in]	pid	The process unique id array
[in]	size	The size of pid array
[out]	usage	The CPU usage structure array of the processes

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter
RUNTIME_INFO_ERROR_OUT_OF_MEMORY	Not able to allocate memory (for output param/other operations)
RUNTIME_INFO_ERROR_REMOTE_IO	Call to resource daemon failed (dbus errors/resource daemon errors)
RUNTIME_INFO_ERROR_IO_ERROR	An I/O error occurred (during dbus message operations/other IO operations)
RUNTIME_INFO_ERROR_PERMISSION_DENIED	Process not authorized to request process usage info

See also:: runtime_info_get_cpu_usage()

int runtime_info_get_process_memory_info	(	int *	pid,
		int	size,
		process_memory_info_s **	info
	)

Gets memory information per process.

Since :: 3.0

Privilege Level:: public

Privilege:: http://tizen.org/privilege/systemmonitor

Remarks:: You must release s value using free().
The size of s is the same with size.

Parameters:

[in]	pid	The process unique id array
[in]	size	The size of pid array
[out]	info	The memory information structure array of the processes

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter
RUNTIME_INFO_ERROR_OUT_OF_MEMORY	Not able to allocate memory (for output param/other operations)
RUNTIME_INFO_ERROR_REMOTE_IO	Call to resource daemon failed (dbus errors/resource daemon errors)
RUNTIME_INFO_ERROR_IO_ERROR	An I/O error during dbus message operations
RUNTIME_INFO_ERROR_PERMISSION_DENIED	Process not authorized to request process usage info

See also:: runtime_info_get_system_memory_info()

int runtime_info_get_processor_count ( int * num_core )

Gets the number of processors.

Since :: 3.0

Parameters:

[out] num_core The number of whole processors

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter
RUNTIME_INFO_ERROR_IO_ERROR	An I/O error occurred (during file open operation)

int runtime_info_get_processor_current_frequency	(	int	core_idx,
		int *	cpu_freq
	)

Gets the current frequency of processor.

Since :: 3.0

Parameters:

[in]	core_idx	The index (from 0) of CPU core that you want to know the frequency
[out]	cpu_freq	The current frequency(MHz) of processor

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter
RUNTIME_INFO_ERROR_IO_ERROR	An I/O error occurred (during file open operation)
RUNTIME_INFO_ERROR_NO_DATA	No data available (Since 3.0)

int runtime_info_get_processor_max_frequency	(	int	core_idx,
		int *	cpu_freq
	)

Gets the max frequency of processor.

Since :: 3.0

Parameters:

[in]	core_idx	The index (from 0) of CPU core that you want to know the frequency
[out]	cpu_freq	The max frequency(MHz) of processor

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter
RUNTIME_INFO_ERROR_IO_ERROR	An I/O error occurred (during file open operation)
RUNTIME_INFO_ERROR_NO_DATA	No data available (Since 3.0)

int runtime_info_get_system_memory_info ( runtime_memory_info_s * info )

Gets system memory information.

Since :: 3.0

Parameters:

[out] info The system memory information structure

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter
RUNTIME_INFO_ERROR_IO_ERROR	An Input/Output error occurred while reading from system

See also:: runtime_info_get_process_memory_info()

int runtime_info_get_value_bool	(	runtime_info_key_e	key,
		bool *	value
	)

Gets the boolean value from the runtime information.

This function gets current state of the given key which represents specific runtime information.

Since :: 2.3.1

Parameters:

[in]	key	The runtime information key from which data should be read
[out]	value	The current value of the given key

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter
RUNTIME_INFO_ERROR_IO_ERROR	An input/output error occurred when read value from system
RUNTIME_INFO_ERROR_PERMISSION_DENIED	No permission to use the api
RUNTIME_INFO_ERROR_NOT_SUPPORTED	Not supported parameter

int runtime_info_get_value_double	(	runtime_info_key_e	key,
		double *	value
	)

Gets the double value from the runtime information.

This function gets current state of the given key which represents specific runtime information.

Since :: 2.3.1

Parameters:

[in]	key	The runtime information key from which data should be read
[out]	value	The current value of the given key

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter
RUNTIME_INFO_ERROR_IO_ERROR	An input/output error occurred when read value from system
RUNTIME_INFO_ERROR_PERMISSION_DENIED	No permission to use the api
RUNTIME_INFO_ERROR_NOT_SUPPORTED	Not supported parameter

int runtime_info_get_value_int	(	runtime_info_key_e	key,
		int *	value
	)

Gets the integer value of the runtime information.

This function gets current state of the given key which represents specific runtime information.

Since :: 2.3.1

Parameters:

[in]	key	The runtime information status key from which data should be read
[out]	value	The current value of the given key

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter
RUNTIME_INFO_ERROR_IO_ERROR	An input/output error occurred when read value from system
RUNTIME_INFO_ERROR_PERMISSION_DENIED	No permission to use the api
RUNTIME_INFO_ERROR_NOT_SUPPORTED	Not supported parameter

int runtime_info_get_value_string	(	runtime_info_key_e	key,
		char **	value
	)

Gets the string value for specified runtime information.

This function gets current state of the given key which represents specific runtime information.

Since :: 2.3.1

Remarks:: You must release value using free().

Parameters:

[in]	key	The runtime information key from which data should be read
[out]	value	The current value of the given key

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter
RUNTIME_INFO_ERROR_IO_ERROR	An input/output error occurred when read value from system
RUNTIME_INFO_ERROR_OUT_OF_MEMORY	Out of memory
RUNTIME_INFO_ERROR_PERMISSION_DENIED	No permission to use the api
RUNTIME_INFO_ERROR_NOT_SUPPORTED	Not supported parameter

int runtime_info_set_changed_cb	(	runtime_info_key_e	key,
		runtime_info_changed_cb	callback,
		void *	user_data
	)

Registers a change event callback for given runtime information key.

Since :: 2.3.1

Parameters:

[in]	key	The runtime information type
[in]	callback	The callback function to invoke
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter
RUNTIME_INFO_ERROR_PERMISSION_DENIED	No permission to use the api
RUNTIME_INFO_ERROR_NOT_SUPPORTED	Not supported parameter

Postcondition:: runtime_info_changed_cb() will be invoked.

See also:: runtime_info_unset_changed_cb(); runtime_info_changed_cb()

int runtime_info_unset_changed_cb ( runtime_info_key_e key )

Unregisters the callback function.

Since :: 2.3.1

Parameters:

[in] key The runtime information type

Returns:: 0 on success, otherwise a negative error value

Return values:

RUNTIME_INFO_ERROR_NONE	Successful
RUNTIME_INFO_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: runtime_info_set_changed_cb()

Required Header

Overview

Functions

Typedefs

Typedef Documentation

Enumeration Type Documentation

Function Documentation