NAME

       gearman_strerror - Gearmand Documentation, http://gearman.info/

SYNOPSIS

       #include <libgearman/gearman.h>

       gearman_return_t

       const char *gearman_strerror(gearman_return_t rc)

       bool gearman_success(gearman_return_t rc)

       bool gearman_failed(gearman_return_t rc)

       bool gearman_continue(gearman_return_t rc)

       Compile and link with -lgearman

DESCRIPTION

       gearman_return_t  is used as a return/error type for all calls using gearman_client_st and
       gearman_worker_st.  GEARMAN_SUCCESS is  returned  upon  success,  otherwise  an  error  is
       returned. gearman_failed() can be used to see if the return value is a failing value.  You
       can print a text version of the error message with gearman_strerror().

       gearman_success() return true if  GEARMAN_SUCCESS  or  if  GEARMAN_NO_PENDING_TASKS  tests
       true.

       gearman_failed() return true if any value other then GEARMAN_SUCCESS was provided.

       gearman_continue()  returns  true  if  any error related to non-blocking IO occurred. This
       should be used for testing loops.

   Possible values of gearman_return_t:
       GEARMAN_SUCCESS
              Success

       GEARMAN_NO_PENDING_TASKS
              gearman_client_run_tasks() was called and it has completed all  tasks  assigned  to
              the client.

       GEARMAN_IO_WAIT
              Blocking IO was found. gearman_continue() can be used to test for this.

       GEARMAN_ERRNO
              System error occurred. Use either gearman_client_errno() or gearman_worker_errno()

       GEARMAN_NO_ACTIVE_FDS
              No  active  connections were available.  gearman_continue() can be used to test for
              this.

       GEARMAN_GETADDRINFO
              Name resolution failed for a host.

       GEARMAN_NO_SERVERS
              No servers have been provided for the client/worker.

       GEARMAN_LOST_CONNECTION
              Connection was lost to the given server.

       GEARMAN_MEMORY_ALLOCATION_FAILURE
              Memory allocation failed.

       GEARMAN_SERVER_ERROR
              An error occurred on the server.

       GEARMAN_NOT_CONNECTED
              Client/Worker is not currently connected to the server.

       GEARMAN_COULD_NOT_CONNECT
              Server name was valid, but a connection could not be made.

       GEARMAN_ECHO_DATA_CORRUPTION
              Either gearman_client_echo() or gearman_worker_echo() echo was unsuccessful because
              the data was returned from gearmand corrupted.

       GEARMAN_UNKNOWN_STATE
              The gearman_return_t was never set.

       GEARMAN_FLUSH_DATA
              Internal state, should never be seen by either client or worker.

       GEARMAN_SEND_BUFFER_TOO_SMALL
              Send buffer was too small.

       GEARMAN_TIMEOUT
              A timeout occurred when making a request to the server.

       GEARMAN_ARGUMENT_TOO_LARGE
              Argument was too large for the current buffer.

       GEARMAN_INVALID_ARGUMENT
              One  of  the  arguments  to  the  given API call was invalid. EINVAL will be set if
              gearman_client_error() or gearman_worker_error() were not settable. This  can  also
              be  returned  if  GEARMAN_CLIENT_UNBUFFERED_RESULT  was  set, but the client is not
              handling the data correctly.

   CLIENT ONLY
       GEARMAN_NEED_WORKLOAD_FN
              A client was asked for work, but no gearman_workload_fn callback was specified. See
              gearman_client_set_workload_fn()

       GEARMAN_WORK_FAIL
              A  task  has  failed,  and  the  worker  has  exited  with  an  error  or it called
              gearman_job_send_fail()

       GEARMAN_IN_PROGRESS
              gearman_client_job_status() has been called for a gearman_job_handle_t and the  Job
              is currently being run by a worker.

       GEARMAN_JOB_EXISTS
              gearman_client_job_status()  has been called for a gearman_job_handle_t and the Job
              is currently known by a server, but is not being run by a worker.

   WORKER ONLY
       GEARMAN_INVALID_FUNCTION_NAME
              A worker was sent a request for a job that it did not have a valid function for.

       GEARMAN_INVALID_WORKER_FUNCTION
              No callback was provided by the worker for a given function.

       GEARMAN_NO_REGISTERED_FUNCTION
              A request for removing a given function  from  a  worker  was  invalid  since  that
              function did not exist.

       GEARMAN_NO_REGISTERED_FUNCTIONS
              The worker has not registered any functions.

       GEARMAN_NO_JOBS
              No  jobs  were found for the worker. This error code is only returned if the worker
              has just made a request for jobs.

   WORKER TO CLIENT
       Client which have registered a custom gearman_actions_t may  use  these  value  as  return
       values to the calling client.

       GEARMAN_WORK_DATA
              Worker has sent a chunked piece of data to the client via gearman_job_send_data()

       GEARMAN_WORK_WARNING
              Worker has issued a warning to the client via gearman_job_send_warning()

       GEARMAN_WORK_STATUS
              Status has been updated by the worker via gearman_job_send_status()

       GEARMAN_WORK_EXCEPTION
              Worker has sent an exception the client via gearman_job_send_exception()

       GEARMAN_WORK_FAIL
              A  task  has  failed,  and  the  worker  has  exited  with  an  error  or it called
              gearman_job_send_fail()

       GEARMAN_WORK_ERROR
              A task has had an error and will be retried.

       GEARMAN_PAUSE
              Used only in custom application  for  client  return  based  on  GEARMAN_WORK_DATA,
              GEARMAN_WORK_WARNING,       GEARMAN_WORK_EXCEPTION,      GEARMAN_WORK_FAIL,      or
              GEARMAN_WORK_STATUS. gearman_continue() can be used to check for this value.

   WORKER TO CLIENT
       Any function defined by gearman_worker_define_function() may, and  can  only,  return  the
       following gearman_return_t values.

       GEARMAN_SUCCESS
              The function successfully completed the job.

       GEARMAN_FATAL

       GEARMAN_FAIL
              The  function  failed to complete the job. GEARMAN_FATAL is the deprecated name for
              GEARMAN_FAIL

       GEARMAN_ERROR
              A task has had an error and will be retried.

       GEARMAN_SHUTDOWN
              GEARMAN_SHUTDOWN is a special case. If it is  returned  the  client  will  be  sent
              GEARMAN_SUCCESS, but gearman_worker_work() will exit with GEARMAN_SHUTDOWN.

   TASK ONLY
       GEARMAN_NOT_FLUSHING
              gearman_task_send_workload() failed, it was not in the correct state.

       GEARMAN_DATA_TOO_LARGE
              gearman_task_send_workload() failed, the data was too large to be sent.

       GEARMAN_UNKNOWN_OPTION
              Default state of task return value.

   PROTOCOL
       If any of these errors occurred the connection will be dropped/reset.

       GEARMAN_INVALID_MAGIC

       GEARMAN_INVALID_COMMAND

       GEARMAN_INVALID_PACKET

       GEARMAN_UNEXPECTED_PACKET

       GEARMAN_TOO_MANY_ARGS

   DEPRECATED
       GEARMAN_IGNORE_PACKET

       GEARMAN_MAX_RETURN

SEE ALSO

       gearmand(8) libgearman(3) gearman_client_error() or gearman_worker_error()

AUTHOR

       Data Differential http://www.datadifferential.com/

COPYRIGHT

       2011-2017, Data Differential, http://www.datadifferential.com/