NAME¶
votequorum_dispatch - Dispatches callbacks from the votequorum service
SYNOPSIS¶
#include <corosync/votequorum.h>
int votequorum_dispatch(votequorum_handle_t handle,
cs_dispatch_flags_t *dispatch_types);
DESCRIPTION¶
The
votequorum_dispatch function is used to dispatch configuration
changes.
Each application may have several connections to the votequorum API. Each
application uses the
handle argument to uniquely identify the
connection.
The
dispatch_types argument is used to identify the type of dispatch to
execute. The possible types are defined by the structure:
typedef enum {
CS_DISPATCH_ONE = 1,
CS_DISPATCH_ALL = 2,
CS_DISPATCH_BLOCKING = 3,
CS_DISPATCH_ONE_NONBLOCKING = 4
} cs_dispatch_flags_t;
The dispatch values have the following meanings:
- CS_DISPATCH_ONE
- Dispatch at least one callback, blocking until the callback is
dispatched.
- CS_DISPATCH_ALL
- Dispatch all waiting callbacks without blocking to wait for any
callbacks.
- CS_DISPATCH_BLOCKING
- Dispatch all callbacks blocking indefinitely. This is used in a threaded
program where a thread is created, and then quorum_dispatch() is called
immediately from the created thread to execute callbacks.
- CS_DISPATCH_ONE_NONBLOCKING
- Dispatch at most one callback. If there is no pending callback,
CS_ERR_TRY_AGAIN is returned.
RETURN VALUE¶
This call returns the CS_OK value if successful, otherwise an error is returned.
ERRORS¶
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
SEE ALSO¶
votequorum_overview(8),
votequorum_initialize(3),
votequorum_finalize(3),
votequorum_getinfo(3),
votequorum_trackstart(3),
votequorum_trackstop(3),
votequorum_fd_get(3),
votequorum_context_set(3),
votequorum_context_get(3),
votequorum_setexpected(3),
votequorum_setvotes(3)