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Return values. Always check GearmanClient::error() or GearmanWorker() for a string error, as it may contain more details:

GEARMAN_SUCCESS (int)

Whatever action was taken was successful.

GEARMAN_IO_WAIT (int)

When in non-blocking mode, an event is hit that would have blocked.

GEARMAN_ERRNO (int)

A system error. Check GearmanClient::errno() or GearmanWorker::errno() for the system error code that was returned.

GEARMAN_NO_ACTIVE_FDS (int)

GearmanClient::wait() or GearmanWorker() was called with no connections.

GEARMAN_UNEXPECTED_PACKET (int)

Indicates something going very wrong in gearmand. Applies only to GearmanWorker.

GEARMAN_GETADDRINFO (int)

DNS resolution failed (invalid host, port, etc).

GEARMAN_NO_SERVERS (int)

Did not call GearmanClient::addServer() before submitting jobs or tasks.

GEARMAN_LOST_CONNECTION (int)

Lost a connection during a request.

GEARMAN_MEMORY_ALLOCATION_FAILURE (int)

Memory allocation failed (ran out of memory).

GEARMAN_SERVER_ERROR (int)

Something went wrong in the Gearman server and it could not handle the request gracefully.

GEARMAN_WORK_DATA (int)

Notice return code obtained with GearmanClient::returnCode() when using GearmanClient::do(). Sent to update the client with data from a running job. A worker uses this when it needs to send updates, send partial results, or flush data during long running jobs.

GEARMAN_WORK_WARNING (int)

Notice return code obtained with GearmanClient::returnCode() when using GearmanClient::do(). Updates the client with a warning. The behavior is just like GEARMAN_WORK_DATA, but should be treated as a warning instead of normal response data.

GEARMAN_WORK_STATUS (int)

Notice return code obtained with GearmanClient::returnCode() when using GearmanClient::do(). Sent to update the status of a long running job. Use GearmanClient::doStatus() to obtain the percentage complete of the task.

GEARMAN_WORK_EXCEPTION (int)

Notice return code obtained with GearmanClient::returnCode() when using GearmanClient::do(). Indicates that a job failed with a given exception.

GEARMAN_WORK_FAIL (int)

Notice return code obtained with GearmanClient::returnCode() when using GearmanClient::do(). Indicates that the job failed.

GEARMAN_COULD_NOT_CONNECT (int)

Failed to connect to servers.

GEARMAN_INVALID_FUNCTION_NAME (int)

Trying to register a function name of NULL or using the callback interface without specifying callbacks.

GEARMAN_INVALID_WORKER_FUNCTION (int)

Trying to register a function with a NULL callback function.

GEARMAN_NO_REGISTERED_FUNCTIONS (int)

When a worker gets a job for a function it did not register.

GEARMAN_NO_JOBS (int)

For a non-blocking worker, when GearmanWorker::work() does not have any active jobs.

GEARMAN_ECHO_DATA_CORRUPTION (int)

After GearmanClient::echo() or GearmanWorker::echo() the data returned doesn't match the data sent.

GEARMAN_NEED_WORKLOAD_FN (int)

When the client opted to stream the workload of a task, but did not specify a workload callback function.

GEARMAN_PAUSE (int)

For the non-blocking client task interface, can be returned from the task callback to "pause" the call and return from GearmanClient::runTasks(). Call GearmanClient::runTasks() again to continue.

GEARMAN_UNKNOWN_STATE (int)

Internal client/worker state error.

GEARMAN_SEND_BUFFER_TOO_SMALL (int)

Internal error: trying to flush more data in one atomic chunk than is possible due to hard-coded buffer sizes.

GEARMAN_TIMEOUT (int)

Hit the timeout limit set by the client/worker.

GearmanClient options:

GEARMAN_CLIENT_GENERATE_UNIQUE (int)

Generate a unique id (UUID) for each task.

GEARMAN_CLIENT_NON_BLOCKING (int)

Run the cient in a non-blocking mode.

GEARMAN_CLIENT_UNBUFFERED_RESULT (int)

Allow the client to read data in chunks rather than have the library buffer the entire data result and pass that back.

GEARMAN_CLIENT_FREE_TASKS (int)

Automatically free task objects once they are complete. This is the default setting in this extension to prevent memory leaks.

GearmanWorker options:

GEARMAN_WORKER_NON_BLOCKING (int)

Run the worker in non-blocking mode.

GEARMAN_WORKER_GRAB_UNIQ (int)

Return the client assigned unique ID in addition to the job handle.

Base Gearman configuration:

GEARMAN_DEFAULT_TCP_HOST (string)

GEARMAN_DEFAULT_TCP_PORT (int)

GEARMAN_DEFAULT_SOCKET_TIMEOUT (int)

GEARMAN_DEFAULT_SOCKET_SEND_SIZE (int)

GEARMAN_DEFAULT_SOCKET_RECV_SIZE (int)

GEARMAN_MAX_ERROR_SIZE (int)

GEARMAN_PACKET_HEADER_SIZE (int)

GEARMAN_JOB_HANDLE_SIZE (int)

GEARMAN_OPTION_SIZE (int)

GEARMAN_UNIQUE_SIZE (int)

GEARMAN_MAX_COMMAND_ARGS (int)

GEARMAN_ARGS_BUFFER_SIZE (int)

GEARMAN_SEND_BUFFER_SIZE (int)

GEARMAN_RECV_BUFFER_SIZE (int)

GEARMAN_WORKER_WAIT_TIMEOUT (int)