VOTEQUORUM_INITIALIZE(3) Corosync Cluster Engine Programmer's Manual VOTEQUORUM_INITIALIZE(3)NAME
votequorum_initialize - Create a new connection to the VoteQuorum service
SYNOPSIS
#include <corosync/votequorum.h>
int votequorum_initialize(votequorum_handle_t *handle, votequorum_callbacks_t *callbacks);
DESCRIPTION
The votequorum_initialize function is used to initialize a connection to the vote-based quorum database API.
Each application may have several connections to the votequorum API. Each application uses the handle argument to uniquely identify the
connection. The handle argument is then used in other function calls to identify the connection to be used for communication with the
votequorum service.
Every time the voting configuraton changes (eg a node joins or leave the cluster), the callback is called. The callback function is
described by the following type definitions:
typedef void (*votequorum_notification_fn_t) ( votequorum_handle_t handle, uint64_t context, uint32_t quorate, uint32_t
node_list_entries, votequorum_node_t node_list[] );
The callbacks argument is of the type:
typedef struct {
votequorum_notification_fn_t votequorum_notify_fn;
} votequorum_callbacks_t;
When a configuration change occurs, the callback is called from the votequorum_dispatch() function.
RETURN VALUE
This call returns the CS_OK value if successful, otherwise an error is returned.
BUGS
Callbacks are not support at the moment.
ERRORS
The errors are undocumented.
SEE ALSO votequorum_overview(8), votequorum_finalize(3), votequorum_fd_get(3), votequorum_dispatch(3),
corosync Man Page 2009-01-26 VOTEQUORUM_INITIALIZE(3)
Check Out this Related Man Page
VOTEQUORUM_DISPATCH(3) Corosync Cluster Engine Programmer's Manual VOTEQUORUM_DISPATCH(3)NAME
votequorum_dispatch - Dispatches callbacks from the votequorum service
SYNOPSIS
#include <corosync/votequorum.h>
int votequorum_dispatch(votequorum_handle_t handle, votequorum_dispatch_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,
CS_DISPATCH_ALL,
CS_DISPATCH_BLOCKING
} votequorum_dispatch_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 votequo-
rum_dispatch() is called immediately from the created thread to execute callbacks.
RETURN VALUE
This call returns the CS_OK value if successful, otherwise an error is returned.
ERRORS
The errors are undocumented.
SEE ALSO votequorum_overview(8), votequorum_initialize(3), votequorum_finalize(3), votequorum_fd_get(3),
corosync Man Page 2009-01-26 VOTEQUORUM_DISPATCH(3)
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