sam_stop(3) [centos man page]

SAM_STOP(3)					    Corosync Cluster Engine Programmer's Manual 				       SAM_STOP(3)

NAME

       sam_stop - Stop health checking

SYNOPSIS

       #include <corosync/sam.h>

       cs_error_t sam_stop (void);

DESCRIPTION

       The  sam_stop function is used to stop health checking of an active process.  After calling this function, the application no longer should
       send helathchecks.  In the case of event driven healthchecking, the healthchecking thread will be stopped.

       A process can always start health checking again by calling sam_start(3) function.

RETURN VALUE

       This call return CS_OK value if successful, otherwise and error is returned.

ERRORS

       CS_ERR_BAD_HANDLE
	      health checking was not started by calling sam_start(3) function.

SEE ALSO

       sam_start(3)

       CS_ERR_TRY_AGAIN Resource temporarily unavailable

       CS_ERR_INVALID_PARAM Invalid argument

       CS_ERR_ACCESS Permission denied

       CS_ERR_LIBRARY The connection failed

       CS_ERR_INTERRUPT System call inturrupted by a signal

       CS_ERR_NOT_SUPPORTED The requested protocol/functuality not supported

       CS_ERR_MESSAGE_ERROR Incorrect auth message received

       CS_ERR_NO_MEMORY Not enough memory to completed the requested task

corosync Man Page						    12/01/2009							       SAM_STOP(3)

SAM_HC_CALLBACK_REGISTER(3)			    Corosync Cluster Engine Programmer's Manual 		       SAM_HC_CALLBACK_REGISTER(3)

NAME

       sam_hc_callback_register - Register health check callback

SYNOPSIS

       #include <corosync/sam.h>

       cs_error_t sam_hc_callback_register (sam_hc_callback_t cb);

DESCRIPTION

       The sam_hc_callback_register function is used to register a user provided healthcheck callback.	After calling of this function, the SAM is
       switched from application driven healthchecking to event driven healthchecking.	In this mode, sam_hc_send(3) does not need to be executed.

       The parameter cb is callback function of type sam_hc_callback_t defined as:

	 typedef int (*sam_hc_callback_t)(void);

       This function will be regulargly called and must return 0 if the process is functioning normally, or -1 if the process is executing  abnor-
       mally.  When -1 is returned, the SAM server execute the registered recovery policy.

       A value of NULL can be passed into this function to switch into application driven healthchecking.  cb to NULL.

RETURN VALUE

       This call return CS_OK value if successful, otherwise and error is returned.

ERRORS

       CS_ERR_BAD_HANDLE
	      SAM was not initialized and registered or health checking is in running state

       CS_ERR_LIBRARY
	      internal	library  call  failed. This can occur during fork() or pipe () system calls and the errno variable can be read to retrieve
	      more information.

SEE ALSO

       sam_start(3), sam_stop(3), sam_hc_send(3), sam_register(3),

       CS_ERR_TRY_AGAIN Resource temporarily unavailable

       CS_ERR_INVALID_PARAM Invalid argument

       CS_ERR_ACCESS Permission denied

       CS_ERR_LIBRARY The connection failed

       CS_ERR_INTERRUPT System call inturrupted by a signal

       CS_ERR_NOT_SUPPORTED The requested protocol/functuality not supported

       CS_ERR_MESSAGE_ERROR Incorrect auth message received

       CS_ERR_NO_MEMORY Not enough memory to completed the requested task

corosync Man Page						    12/01/2009					       SAM_HC_CALLBACK_REGISTER(3)