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MPI_Win_unlock_all.3.rst

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MPI_Win_unlock_all

:ref:`MPI_Win_unlock_all` - Completes an RMA access epoch started by a call to :ref:`MPI_Win_lock_all`.

SYNTAX

C Syntax

#include <mpi.h>

int MPI_Win_unlock_all(MPI_Win win)

Fortran Syntax

USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_WIN_UNLOCK_ALL(WIN, IERROR)
     INTEGER WIN, IERROR

Fortran 2008 Syntax

USE mpi_f08
MPI_Win_unlock_all(win, ierror)
     TYPE(MPI_Win), INTENT(IN) :: win
     INTEGER, OPTIONAL, INTENT(OUT) :: ierror

INPUT PARAMETERS

  • win: Window object (handle).

OUTPUT PARAMETER

  • ierror: Fortran only: Error status (integer).

DESCRIPTION

:ref:`MPI_Win_unlock_all` completes an RMA access epoch started by a call to :ref:`MPI_Win_lock_all`. RMA operations issued during this period will have completed both at the origin and at the target when the call returns.

Locks are used to protect accesses to the locked target window effected by RMA calls issued between the lock and unlock call, and to protect local load/store accesses to a locked local window executed between the lock and unlock call. Accesses that are protected by an exclusive lock will not be concurrent at the window site with other accesses to the same window that are lock protected. Accesses that are protected by a shared lock will not be concurrent at the window site with accesses protected by an exclusive lock to the same window.

ERRORS

.. seealso::
   * :ref:`MPI_Win_lock_all`
   * :ref:`MPI_Win_unlock`