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NAMEsam_hc_callback_register - Register health check callbackSYNOPSIS#include <corosync/sam.h>cs_error_t sam_hc_callback_register (sam_hc_callback_t cb); DESCRIPTIONThe 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 regularly called and must return 0 if the process is functioning normally, or -1 if the process is executing abnormally. 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 VALUEThis call return CS_OK value if successful, otherwise and error is returned.ERRORS
SEE ALSOsam_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 interrupted by a signal CS_ERR_NOT_SUPPORTED The requested protocol/functionality not supported CS_ERR_MESSAGE_ERROR Incorrect auth message received CS_ERR_NO_MEMORY Not enough memory to complete the requested task
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