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sam_hc_send(3) [centos man page]

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

NAME
sam_hc_send - Send health check confirmation SYNOPSIS
#include <corosync/sam.h> cs_error_t sam_hc_send (void); DESCRIPTION
The sam_hc_send function is used to send healthcheck confirmation from the applicatoin. This function should be called reguarly when con- figured for application driven healthchecking, otherwise recovery actoin will be taken. When using event driven healthchecking, this function should not be used. RETURN VALUE
This call return CS_OK value if successful, otherwise and error is returned. ERRORS
CS_ERR_BAD_HANDLE health checking is not in running state (sam_start(3) has not been executed) or function is called after stop/finalization of SAM. SEE ALSO
sam_start(3), sam_stop(3), sam_hc_callback_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_SEND(3)

Check Out this Related Man Page

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)
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