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OSAPI Timer

Data Structures

struct  OSAPI_TimeoutUserData
 User-data passed to timer-handler. More...
struct  OSAPI_TimerProperty
 Timer properies. More...

Macros

#define OSAPI_TIMER_PERIODIC   (0x1)
 Create a periodic timer.
#define OSAPI_TIMER_ONE_SHOT   (0x0)
 Create a one-shot timer.

Enumerations

enum  OSAPI_TimeoutOp_t
 Action taken by timer module when a timer callback returns. More...

Functions

OSAPI_Timer_T OSAPI_Timer_new (struct OSAPI_TimerProperty *property, struct OSAPI_Mutex *mutex)
 Create a Timer.
RTI_BOOL OSAPI_Timer_delete (OSAPI_Timer_T timer)
 Delete a Timer.
RTI_BOOL OSAPI_Timer_create_timeout (OSAPI_Timer_T timer, OSAPI_TimeoutHandle_T *out_handle, RTI_INT32 timeout_sec, RTI_INT32 timeout_nsec, RTI_INT32 flags, OSAPI_TimeoutFunction_T timeout_handler, struct OSAPI_TimeoutUserData *user_data)
 Schedule a timeout.
RTI_BOOL OSAPI_Timer_update_timeout (OSAPI_Timer_T timer, OSAPI_TimeoutHandle_T *out_handle, RTI_INT32 timeout_sec, RTI_INT32 timeout_nsec)
 Reschedule a timeout.
RTI_BOOL OSAPI_Timer_delete_timeout (OSAPI_Timer_T timer, OSAPI_TimeoutHandle_T *handle)
 Stop a previously scheduled timeout.
RTI_BOOL OSAPI_TimeoutHandle_get_user_data (struct OSAPI_TimeoutUserData *user_data, OSAPI_TimeoutHandle_T *handle)
 Get the user_data from a handle.

Detailed Description


Macro Definition Documentation

#define OSAPI_TIMER_PERIODIC   (0x1)

Create a periodic timer.

#define OSAPI_TIMER_ONE_SHOT   (0x0)

Create a one-shot timer.


Enumeration Type Documentation

Action taken by timer module when a timer callback returns.


Function Documentation

OSAPI_Timer_T OSAPI_Timer_new ( struct OSAPI_TimerProperty property,
struct OSAPI_Mutex *  mutex 
)

Create a Timer.

Create a new Timer. A Timer can manage multiple timeouts.

Example:
@code 
OSAPI_Timer_t my_timer;
struct OSAPI_TimerProperty timer_property = OSAPI_TimerProperty_INITIALIZER;
timer = OSAPI_Timer_new(&timer_property);
if (timer == NULL) {
    return error;
}
\endcode

The created Timer should be deleted with \ref OSAPI_Timer_delete.

@param[in] property Timer property.
@param[in] mutex Shared mutex.

@return New timer on success, NULL on failure
RTI_BOOL OSAPI_Timer_delete ( OSAPI_Timer_T  timer)

Delete a Timer.

Delete a previously created Timer. All timeouts are cancelled.

Example:
@code 
OSAPI_Timer_t my_timer;

......

OSAPI_Timer_delete(my_timer);
if (timer == NULL) {
    return error;
}
\endcode

The created Timer should be deleted with \ref OSAPI_Timer_delete.

@param [in] timer Timer.

\return RTI_TRUE on success, RTI_FALSE on failure

\par MT Safety:

SAFE

RTI_BOOL OSAPI_Timer_create_timeout ( OSAPI_Timer_T  timer,
OSAPI_TimeoutHandle_T *  out_handle,
RTI_INT32  timeout_sec,
RTI_INT32  timeout_nsec,
RTI_INT32  flags,
OSAPI_TimeoutFunction_T  timeout_handler,
struct OSAPI_TimeoutUserData user_data 
)

Schedule a timeout.

This function schedules a timeout with the specified period. The timeout can either be rescheduled automatically or a new timeout must be created.

Example:

OSAPI_Timer_t my_timer;
OSAPITimeoutHandle_t my_handle = OSAPITimeoutHandle_t_INITIALIZER;
RTI_BOOL result;
struct OSAPI_TimerEntryUserData user_data;
result = OSAPI_Timer_create_timeout(my_timer,
&my_handle,
1000,0,
&user_data);
if (!result) {
report error;
}
......

A timeout can cancelled with OSAPI_Timer_delete_timeout or the timeout can be modified with OSAPI_Timer_update_timeout.

Parameters:
[in]timerTimer object. Cannot be NULL.
[out]out_handleReference to the timeout. Cannot be NULL.
[in]timeout_secThe number of seconds before timeout
[in]timeout_nsecAdditional number of nanoseconds before timeout
[in]flagsFlags OSAPI_TIMER_PERIODIC or OSAPI_TIMER_ONE_SHOT
[in]timeout_handlerFunction to call at timeout. Cannot be NULL.
[in]user_dataUser data associated with the timeout. Can be NULL.
Returns:
RTI_TRUE on success, RTI_FALSE on failure
MT Safety:
SAFE
RTI_BOOL OSAPI_Timer_update_timeout ( OSAPI_Timer_T  timer,
OSAPI_TimeoutHandle_T *  out_handle,
RTI_INT32  timeout_sec,
RTI_INT32  timeout_nsec 
)

Reschedule a timeout.

This function reschedules a previously scheduled timeout with the specified period.

Example:

OSAPI_Timer_t my_timer;
OSAPITimeoutHandle_t my_handle = OSAPITimeoutHandle_t_INITIALIZER;
RTI_BOOL result;
struct OSAPI_TimerEntryUserData user_data;
result = OSAPI_Timer_update_timeout(my_timer,
&my_handle,
2000,0);
if (!result) {
report error;
}
......
Parameters:
[in]timerTimer object. Cannot be NULL.
[out]out_handleReference to the timeout. Cannot be NULL.
[in]timeout_secThe number of seconds before timeout
[in]timeout_nsecAdditional number of nanoseconds before timeout
Returns:
RTI_TRUE on success, RTI_FALSE on failure
RTI_BOOL OSAPI_Timer_delete_timeout ( OSAPI_Timer_T  timer,
OSAPI_TimeoutHandle_T *  handle 
)

Stop a previously scheduled timeout.

This function stops a previously scheduled timeout.

Example:
@code 
OSAPI_Timer_t my_timer;
OSAPITimeoutHandle_t my_handle = OSAPITimeoutHandle_t_INITIALIZER;
RTI_BOOL result;

....

result = OSAPI_Timer_stop_timer(my_timer,&my_handle);

if (!result) {
    report error;
}

......

\endcode

@param [in] timer Timer object. Cannot be NULL.
@param [in] handle Reference to the timeout. Cannot be NULL.

\return RTI_TRUE on success, RTI_FALSE on failure

\par MT Safety:

SAFE

RTI_BOOL OSAPI_TimeoutHandle_get_user_data ( struct OSAPI_TimeoutUserData user_data,
OSAPI_TimeoutHandle_T *  handle 
)

Get the user_data from a handle.

Example:

OSAPI_Timer_t my_timer;
OSAPITimeoutHandle_t my_handle = OSAPITimeoutHandle_t_INITIALIZER;
RTI_BOOL result;
struct OSAPI_TimerEntryUserData user_data;
....
result = OSAPITimeoutHandle_get_user_data(&user_data,&my_handle);
if (!result) {
report error;
}
......
Parameters:
[out]user_dataUser-data associated with handle. Cannot be NULL.
[in]handleTimer handle.
Returns:
RTI_TRUE on success, RTI_FALSE on failure

RTI Connext DDS Micro Version 2.4.10 Copyright © Fri Jun 30 2017 Real-Time Innovations, Inc