librpma API version 0.14.0

librpma.7 rpma_atomic_write.3 rpma_conn_apply_remote_peer_cfg.3 rpma_conn_cfg_delete.3 rpma_conn_cfg_get_compl_channel.3 rpma_conn_cfg_get_cq_size.3 rpma_conn_cfg_get_rcq_size.3 rpma_conn_cfg_get_rq_size.3 rpma_conn_cfg_get_sq_size.3 rpma_conn_cfg_get_timeout.3 rpma_conn_cfg_new.3 rpma_conn_cfg_set_compl_channel.3 rpma_conn_cfg_set_cq_size.3 rpma_conn_cfg_set_rcq_size.3 rpma_conn_cfg_set_rq_size.3 rpma_conn_cfg_set_sq_size.3 rpma_conn_cfg_set_timeout.3 rpma_conn_delete.3 rpma_conn_disconnect.3 rpma_conn_get_compl_fd.3 rpma_conn_get_cq.3 rpma_conn_get_event_fd.3 rpma_conn_get_private_data.3 rpma_conn_get_qp_num.3 rpma_conn_get_rcq.3 rpma_conn_next_event.3 rpma_conn_req_connect.3 rpma_conn_req_delete.3 rpma_conn_req_get_private_data.3 rpma_conn_req_new.3 rpma_conn_req_recv.3 rpma_conn_wait.3 rpma_cq_get_fd.3 rpma_cq_get_wc.3 rpma_cq_wait.3 rpma_ep_get_fd.3 rpma_ep_listen.3 rpma_ep_next_conn_req.3 rpma_ep_shutdown.3 rpma_err_2str.3 rpma_flush.3 rpma_log_get_threshold.3 rpma_log_set_function.3 rpma_log_set_threshold.3 rpma_mr_advise.3 rpma_mr_dereg.3 rpma_mr_get_descriptor.3 rpma_mr_get_descriptor_size.3 rpma_mr_get_ptr.3 rpma_mr_get_size.3 rpma_mr_reg.3 rpma_mr_remote_delete.3 rpma_mr_remote_from_descriptor.3 rpma_mr_remote_get_flush_type.3 rpma_mr_remote_get_size.3 rpma_peer_cfg_delete.3 rpma_peer_cfg_from_descriptor.3 rpma_peer_cfg_get_descriptor.3 rpma_peer_cfg_get_descriptor_size.3 rpma_peer_cfg_get_direct_write_to_pmem.3 rpma_peer_cfg_new.3 rpma_peer_cfg_set_direct_write_to_pmem.3 rpma_peer_delete.3 rpma_peer_new.3 rpma_read.3 rpma_recv.3 rpma_send.3 rpma_send_with_imm.3 rpma_utils_conn_event_2str.3 rpma_utils_get_ibv_context.3 rpma_utils_ibv_context_is_odp_capable.3 rpma_write.3 rpma_write_with_imm.3

NAME

rpma_log_set_function - set the logging function

SYNOPSIS

      #include <librpma.h>

      typedef void rpma_log_function(
              enum rpma_log_level level,
              const char *file_name,
              const int line_no,
              const char *function_name,
              const char *message_format,
              ...);

      int rpma_log_set_function(rpma_log_function *log_function);

DESCRIPTION

rpma_log_set_function() allows choosing the function which will get all the generated logging messages. The log_function can be either RPMA_LOG_USE_DEFAULT_FUNCTION which will use the default logging function (built into the library) or a pointer to a user-defined function.

Parameters of a user-defined log function are as follow:

  • level - the log level of the message

  • file_name - name of the source file where the message coming from. It could be set to NULL and in such case neither line_no nor function_name are provided.

  • line_no - the source file line where the message coming from

  • function_name - the function name where the message coming from

  • message_format - printf(3)-like format string of the message

  • "..." - additional arguments of the message format string

THE DEFAULT LOGGING FUNCTION

The initial value of the logging function is RPMA_LOG_USE_DEFAULT_FUNCTION. This function writes messages to syslog(3) (the primary destination) and to stderr(3) (the secondary destination).

RETURN VALUE

rpma_log_set_function() function returns 0 on success or error code on failure.

ERRORS

  • RPMA_E_AGAIN - a temporary error occurred, the retry may fix the problem

NOTE

The logging messages on the levels above the RPMA_LOG_THRESHOLD level won't trigger the logging function.

The user defined function must be thread-safe.

SEE ALSO

rpma_log_get_threshold(3), rpma_log_set_threshold(3), librpma(7) and https://pmem.io/rpma/

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