Macros | Typedefs | Functions

le_wdog_interface.h File Reference

#include "legato.h"

Go to the source code of this file.

Macros

#define LE_WDOG_TIMEOUT_NEVER   -1
 
#define LE_WDOG_TIMEOUT_NOW   0
 

Typedefs

typedef void(* le_wdog_DisconnectHandler_t) (void *)
 
typedef struct le_wdog_ExternalWatchdogHandler * le_wdog_ExternalWatchdogHandlerRef_t
 
typedef void(* le_wdog_ExternalWatchdogHandlerFunc_t) (void *contextPtr)
 

Functions

void le_wdog_ConnectService (void)
 
le_result_t le_wdog_TryConnectService (void)
 
void le_wdog_SetServerDisconnectHandler (le_wdog_DisconnectHandler_t disconnectHandler, void *contextPtr)
 
void le_wdog_DisconnectService (void)
 
void le_wdog_Kick (void)
 
void le_wdog_Timeout (int32_t milliseconds)
 
le_wdog_ExternalWatchdogHandlerRef_t le_wdog_AddExternalWatchdogHandler (int32_t milliseconds, le_wdog_ExternalWatchdogHandlerFunc_t handlerPtr, void *contextPtr)
 
void le_wdog_RemoveExternalWatchdogHandler (le_wdog_ExternalWatchdogHandlerRef_t handlerRef)
 

Detailed Description

Legato Watchdog Service include file.

Copyright (C) Sierra Wireless Inc.

Macro Definition Documentation

#define LE_WDOG_TIMEOUT_NEVER   -1

Suspend the watchdog so that it never times out.

#define LE_WDOG_TIMEOUT_NOW   0

Timeout immediately

Typedef Documentation

typedef void(* le_wdog_DisconnectHandler_t) (void *)

Special values that have specific meaning when used as durations in Timeout():

typedef void(* le_wdog_ExternalWatchdogHandlerFunc_t) (void *contextPtr)

External watchdog kick handler

typedef struct le_wdog_ExternalWatchdogHandler* le_wdog_ExternalWatchdogHandlerRef_t

Reference type used by Add/Remove functions for EVENT 'le_wdog_ExternalWatchdog'

Function Documentation

le_wdog_ExternalWatchdogHandlerRef_t le_wdog_AddExternalWatchdogHandler ( int32_t  milliseconds,
le_wdog_ExternalWatchdogHandlerFunc_t  handlerPtr,
void *  contextPtr 
)

Add handler function for EVENT 'le_wdog_ExternalWatchdog'

Register an external watchdog kick handler.

Register an handler which will be triggered periodically if all monitored apps are alive.

Parameters
[in]millisecondsThe period to kick external watchdog
[in]handlerPtrThe handler for external watchdog kicks
[in]contextPtr
void le_wdog_ConnectService ( void  )

Connect the current client thread to the service providing this API. Block until the service is available.

For each thread that wants to use this API, either ConnectService or TryConnectService must be called before any other functions in this API. Normally, ConnectService is automatically called for the main thread, but not for any other thread. For details, see Client-specific Functions.

This function is created automatically.

void le_wdog_DisconnectService ( void  )

Disconnect the current client thread from the service providing this API.

Normally, this function doesn't need to be called. After this function is called, there's no longer a connection to the service, and the functions in this API can't be used. For details, see Client-specific Functions.

This function is created automatically.

void le_wdog_Kick ( void  )

Kicks the watchdog timer.

Once the watchdog has been kicked it must be kicked again before the expiration of the current effective timeout else the configured WatchdogAction will be executed.

void le_wdog_RemoveExternalWatchdogHandler ( le_wdog_ExternalWatchdogHandlerRef_t  handlerRef)

Remove handler function for EVENT 'le_wdog_ExternalWatchdog'

Parameters
[in]handlerRef
void le_wdog_SetServerDisconnectHandler ( le_wdog_DisconnectHandler_t  disconnectHandler,
void *  contextPtr 
)

Set handler called when server disconnection is detected.

When a server connection is lost, call this handler then exit with LE_FATAL. If a program wants to continue without exiting, it should call longjmp() from inside the handler.

void le_wdog_Timeout ( int32_t  milliseconds)

Set a time out.

The watchdog is kicked and a new effective timeout value is set. The new timeout will be effective until the next kick at which point it will revert to the original value.

Parameters
[in]millisecondsThe number of milliseconds until this timer expires
le_result_t le_wdog_TryConnectService ( void  )

Try to connect the current client thread to the service providing this API. Return with an error if the service is not available.

For each thread that wants to use this API, either ConnectService or TryConnectService must be called before any other functions in this API. Normally, ConnectService is automatically called for the main thread, but not for any other thread. For details, see Client-specific Functions.

This function is created automatically.

Returns
  • LE_OK if the client connected successfully to the service.
  • LE_UNAVAILABLE if the server is not currently offering the service to which the client is bound.
  • LE_NOT_PERMITTED if the client interface is not bound to any service (doesn't have a binding).
  • LE_COMM_ERROR if the Service Directory cannot be reached.