0b8baa217d
This commit contains the following changes: The C++ bindings were removed from the standard in MPI-3.0. This commit removes the entirety of the C++ bindings as well as the support configury. Removes all references to C++ from the man pages. This includes the bindings themselves, all references to what C++ bindings return, all not-available comments, and differences between C++ and other language bindings. If the user passes --enable-mpi-cxx, --enable-mpi-cxx-seek, or --enable-cxx-exceptions, print a warning message an abort configure. Signed-off-by: Jeff Squyres <jsquyres@cisco.com> Signed-off-by: Nathan Hjelm <hjelmn@google.com>
69 строки
2.5 KiB
Plaintext
69 строки
2.5 KiB
Plaintext
.\" -*- nroff -*-
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.\" Copyright 2010 Cisco Systems, Inc. All rights reserved.
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.\" Copyright 2006-2008 Sun Microsystems, Inc.
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.\" Copyright (c) 1996 Thinking Machines
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.\" Copyright (c) 2020 Google, LLC. All rights reserved.
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.\" $COPYRIGHT$
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.TH MPI_Comm_get_parent 3 "#OMPI_DATE#" "#PACKAGE_VERSION#" "#PACKAGE_NAME#"
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.SH NAME
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\fBMPI_Comm_get_parent\fP \- Returns the parent intercommunicator of current spawned process.
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.SH SYNTAX
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.ft R
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.SH C Syntax
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.nf
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#include <mpi.h>
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int MPI_Comm_get_parent(MPI_Comm *\fIparent\fP)
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.fi
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.SH Fortran Syntax
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.nf
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USE MPI
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! or the older form: INCLUDE 'mpif.h'
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MPI_COMM_GET_PARENT(\fIPARENT, IERROR\fP)
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INTEGER \fIPARENT, IERROR \fP
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.fi
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.SH Fortran 2008 Syntax
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.nf
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USE mpi_f08
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MPI_Comm_get_parent(\fIparent\fP, \fIierror\fP)
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TYPE(MPI_Comm), INTENT(OUT) :: \fIparent\fP
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INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP
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.fi
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.SH OUTPUT PARAMETERS
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.ft R
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.TP 1i
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parent
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The parent communicator (handle).
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.TP 1i
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IERROR
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Fortran only: Error status (integer).
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.SH DESCRIPTION
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.ft R
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If a process was started with MPI_Comm_spawn or MPI_Comm_spawn_multiple, MPI_Comm_get_parent returns the "parent" intercommunicator of the current process. This parent intercommunicator is created implicitly inside of MPI_Init and is the same intercommunicator returned by the spawn call made in the parents.
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.sp
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If the process was not spawned, MPI_Comm_get_parent returns MPI_COMM_NULL.
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.sp
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After the parent communicator is freed or disconnected, MPI_Comm_get_parent returns MPI_COMM_NULL.
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.SH NOTES
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.ft R
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MPI_Comm_get_parent returns a handle to a single intercommunicator. Calling MPI_Comm_get_parent a second time returns a handle to the same intercommunicator. Freeing the handle with MPI_Comm_disconnect or MPI_Comm_free will cause other references to the intercommunicator to become invalid (dangling). Note that calling MPI_Comm_free on the parent communicator is not useful.
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.SH ERRORS
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Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument.
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.sp
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Before the error value is returned, the current MPI error handler is
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called. By default, this error handler aborts the MPI job, except for I/O function errors. The error handler may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.
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.SH SEE ALSO
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.ft R
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.sp
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.nf
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MPI_Comm_spawn
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MPI_Comm_spawn_multiple
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