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NAME
MPI_Info_get - Retrieves the value associated with a key in an info
object.
SYNTAX
C Syntax
#include <mpi.h>
int MPI_Info_get(MPI_Info info, char *key, int valuelen, char *value, int *flag)
Fortran Syntax
INCLUDE 'mpif.h'
MPI_INFO_GET(INFO, KEY, VALUELEN, VALUE, FLAG, IERROR)
INTEGER INFO, VALUELEN, IERROR
CHARACTER*(*) KEY, VALUE
LOGICAL FLAG
C++ Syntax
#include <mpi.h>
bool MPI::Info::Get(const char* key, int valuelen,
char* value) const
INPUT PARAMETERS
info Info object (handle).
key Key (string).
valuelen Length of value arg (integer).
OUTPUT PARAMETER
value Value (string).
flag Returns true if key defined, false if not (boolean).
IERROR Fortran only: Error status (integer).
DESCRIPTION
MPI_Info_get retrieves the value associated with key in a previous call
to MPI_Info_set. If such a key exists, it sets flag to true and returns
the value in value; otherwise it sets flag to false and leaves value
unchanged. valuelen is the number of characters available in value. If
it is less than the actual size of the value, the returned value is
truncated. In C, valuelen should be one less than the amount of allo-
cated space to allow for the null terminator.
If key is larger than MPI_MAX_INFO_KEY, the call is erroneous.
ERRORS
Almost all MPI routines return an error value; C routines as the value
of the function and Fortran routines in the last argument. C++ func-
tions do not return errors. If the default error handler is set to
MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism
SEE ALSO
MPI_Info_create
MPI_Info_delete
MPI_Info_dup
MPI_Info_free
MPI_Info_get_valuelen
MPI_Info_get_nkeys
MPI_Info_get_nthkey
MPI_Info_set
1.3.4 Nov 11, 2009 MPI_Info_get(3)
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