1EVS_MCAST_JOINED(3)Corosync Cluster Engine Programmer's ManuaElVS_MCAST_JOINED(3)
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6 evs_join - Multicasts to all groups joined to an handle
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9 #include <sys/uio.h> #include <corosync/evs.h>
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11 int evs_mcast_joined(evs_handle_t handle, evs_guraantee_t guarantee,
12 struct iovec *iovec, int iov_len);
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15 The evs_mcast_joined function is multicast a message to all the groups
16 that have been joined with the evs_join(3) function for the argument
17 handle. Messages that are sent to any of the groups joined to the
18 parameter handle will be delivered to all processors in the system.
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20 The argument guarantee requests a delivery guarantee for the message to
21 be sent. The evs_guarantee_t type is defined by:
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23 typedef enum {
24 EVS_TYPE_UNORDERED, /* not implemented */
25 EVS_TYPE_FIFO, /* same as agreed */
26 EVS_TYPE_AGREED, /* implemented */
27 EVS_TYPE_SAFE /* not implemented */
28 } evs_guarantee_t;
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30 The meanings of the evs_guarantee_t typedef are:
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32 EVS_GUARANTEE_UNORDERED
33 Messages are guaranteed to be delivered, but with no particular
34 order. This mode is unimplemented in the EVS library.
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36 EVS_GUARANTEE_FIFO
37 Messages are guaranteed to be delivered in first sent first
38 delivery order from one one. In fact, this guarantee is actu‐
39 ally the AGREED guarantee.
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41 EVS_GUARANTEE_AGREED
42 All processors must agree on the order of delivery. If a mes‐
43 sage is sent from two or more processors at about the same time,
44 the delivery will occur in the same order to all processors.
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46 EVS_GUARANTEE_SAFE
47 All processors must agree on the order of delivery. Further all
48 processors must have a copy of the message before any delivery
49 takes place. This mode is unimplemented in the EVS library.
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51 The iovec argument describes the scatter/gather list which is used to
52 transmit a message. This is a standard socket structure described by:
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54 struct iovec
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56 void *iov_base; /* Pointer to data. */
57 unsigned int iov_len; /* Length of data. */
58 };
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60 The iovlen argument describes the number of entires in the iovec argu‐
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65 This call returns the EVS_OK value if successful, otherwise an error is
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69 The errors are undocumented.
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72 evs_overview(8), evs_initialize(3), evs_finalize(3), evs_fd_get(3),
73 evs_dispatch(3), evs_leave(3), evs_join(3), evs_mcast_groups(3),
74 evs_mmembership_get(3) evs_context_get(3) evs_context_set(3)
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76corosync Man Page 3004-08-31 EVS_MCAST_JOINED(3)