.PVM.recv {rpvm} | R Documentation |
Receive a message.
.PVM.recv (tid = -1, msgtag = -1)
tid |
tid of sending process (-1 matches any tid) |
msgtag |
integer message tag (>=0) supplied by the user (-1 matches any message tag) |
.PVM.recv
blocks the process until a message with lable
msgtag
has arrived from tid
. It then places the message
in a new active receive buffer, which also clears the current
receive buffer.
A -1 in tid
or msgtag
matches anything. Later
.PVM.bufinfo
can be used to find out the tid of the
sending process or msgtag.
The PVM model guarantees the following about message order. If task 1 sends message A to task 2, then task 1 sends message B to task 2, message A will arrive at task 2 before message B. Moreover, if both tasks arrive before task 2 does a receive, then a wildcard receive will always return message A.
.PVM.recv
is blocking, which means the routing waits until a
message matching the user specified tid and msgtag value arrives at
the local pvmd.
Returns the id of the new active receive buffer. -1 indicates an error.
Na (Michael) Li nali@umn.edu and A.J. Rossini rossini@u.washington.edu
PVM documentation
.PVM.send
, .PVM.nrecv
,
.PVM.bufinfo
## Not run: myparent <- .PVM.parent () ## Not run: bufid <- .PVM.recv (myparent, 4) ## Not run: data <- .PVM.upkintvec ()