int MPIDI_CH3U_Win_allocate_shared(MPI_Aint size, int disp_unit, MPID_Info *info, MPID_Comm *comm_ptr,
void **base_ptr, MPID_Win **win_ptr)
{
int mpi_errno = MPI_SUCCESS;
MPID_Comm *comm_self_ptr = NULL;
MPID_Group *group_comm, *group_self;
int result;
MPIU_CHKPMEM_DECL(1);
MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3U_WIN_ALLOCATE_SHARED);
MPIDI_RMA_FUNC_ENTER(MPID_STATE_MPIDI_CH3U_WIN_ALLOCATE_SHARED);
#ifdef HAVE_ERROR_CHECKING
/* The baseline CH3 implementation only works with MPI_COMM_SELF */
MPID_Comm_get_ptr( MPI_COMM_SELF, comm_self_ptr );
mpi_errno = MPIR_Comm_group_impl(comm_ptr, &group_comm);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
mpi_errno = MPIR_Comm_group_impl(comm_self_ptr, &group_self);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
mpi_errno = MPIR_Group_compare_impl(group_comm, group_self, &result);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
mpi_errno = MPIR_Group_free_impl(group_comm);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
mpi_errno = MPIR_Group_free_impl(group_self);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
if (result != MPI_IDENT) {
MPIU_ERR_SETANDJUMP(mpi_errno, MPI_ERR_RMA_SHARED, "**ch3|win_shared_comm");
}
#endif
mpi_errno = MPIDI_CH3U_Win_allocate(size, disp_unit, info, comm_ptr,
base_ptr, win_ptr);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
MPIU_CHKPMEM_MALLOC((*win_ptr)->shm_base_addrs, void **,
1 /* comm_size */ * sizeof(void *),
mpi_errno, "(*win_ptr)->shm_base_addrs");
(*win_ptr)->shm_base_addrs[0] = *base_ptr;
/* Register the shared memory window free function, which will free the
memory allocated here. */
(*win_ptr)->RMAFns.Win_free = MPIDI_SHM_Win_free;
fn_exit:
MPIDI_RMA_FUNC_EXIT(MPID_STATE_MPIDI_CH3U_WIN_ALLOCATE_SHARED);
return mpi_errno;
/* --BEGIN ERROR HANDLING-- */
fn_fail:
MPIU_CHKPMEM_REAP();
goto fn_exit;
/* --END ERROR HANDLING-- */
}
/*@
MPI_Group_compare - Compares two groups
Input Parameters:
+ group1 - group1 (handle)
- group2 - group2 (handle)
Output Parameters:
. result - integer which is 'MPI_IDENT' if the order and members of
the two groups are the same, 'MPI_SIMILAR' if only the members are the same,
and 'MPI_UNEQUAL' otherwise
.N ThreadSafe
.N Fortran
.N Errors
.N MPI_SUCCESS
.N MPI_ERR_GROUP
.N MPI_ERR_ARG
@*/
int MPI_Group_compare(MPI_Group group1, MPI_Group group2, int *result)
{
int mpi_errno = MPI_SUCCESS;
MPID_Group *group_ptr1 = NULL;
MPID_Group *group_ptr2 = NULL;
MPID_MPI_STATE_DECL(MPID_STATE_MPI_GROUP_COMPARE);
MPIR_ERRTEST_INITIALIZED_ORDIE();
/* The routines that setup the group data structures must be executed
within a mutex. As most of the group routines are not performance
critical, we simple run these routines within the SINGLE_CS */
MPIU_THREAD_CS_ENTER(ALLFUNC,);
MPID_MPI_FUNC_ENTER(MPID_STATE_MPI_GROUP_COMPARE);
/* Validate parameters, especially handles needing to be converted */
# ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_ERRTEST_ARGNULL( result, "result", mpi_errno );
MPIR_ERRTEST_GROUP(group1, mpi_errno);
MPIR_ERRTEST_GROUP(group2, mpi_errno);
}
MPID_END_ERROR_CHECKS;
}
# endif
/* Convert MPI object handles to object pointers */
MPID_Group_get_ptr( group1, group_ptr1 );
MPID_Group_get_ptr( group2, group_ptr2 );
/* Validate parameters and objects (post conversion) */
# ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
/* Validate group_ptr */
MPID_Group_valid_ptr( group_ptr1, mpi_errno );
MPID_Group_valid_ptr( group_ptr2, mpi_errno );
/* If group_ptr is not valid, it will be reset to null */
if (mpi_errno) goto fn_fail;
}
MPID_END_ERROR_CHECKS;
}
# endif /* HAVE_ERROR_CHECKING */
/* ... body of routine ... */
mpi_errno = MPIR_Group_compare_impl(group_ptr1, group_ptr2, result);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
/* ... end of body of routine ... */
fn_exit:
MPID_MPI_FUNC_EXIT(MPID_STATE_MPI_GROUP_COMPARE);
MPIU_THREAD_CS_EXIT(ALLFUNC,);
return mpi_errno;
/* --BEGIN ERROR HANDLING-- */
fn_fail:
{
mpi_errno = MPIR_Err_create_code(
mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER,
"**mpi_group_compare",
"**mpi_group_compare %G %G %p", group1, group2, result);
}
mpi_errno = MPIR_Err_return_comm( NULL, FCNAME, mpi_errno );
goto fn_exit;
/* --END ERROR HANDLING-- */
}
int MPIR_Comm_agree(MPIR_Comm *comm_ptr, int *flag)
{
int mpi_errno = MPI_SUCCESS, mpi_errno_tmp = MPI_SUCCESS;
MPIR_Group *comm_grp, *failed_grp, *new_group_ptr, *global_failed;
int result, success = 1;
MPIR_Errflag_t errflag = MPIR_ERR_NONE;
int values[2];
MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPIR_COMM_AGREE);
MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPIR_COMM_AGREE);
MPIR_Comm_group_impl(comm_ptr, &comm_grp);
/* Get the locally known (not acknowledged) group of failed procs */
mpi_errno = MPID_Comm_failure_get_acked(comm_ptr, &failed_grp);
if (mpi_errno) MPIR_ERR_POP(mpi_errno);
/* First decide on the group of failed procs. */
mpi_errno = MPID_Comm_get_all_failed_procs(comm_ptr, &global_failed, MPIR_AGREE_TAG);
if (mpi_errno) errflag = MPIR_ERR_PROC_FAILED;
mpi_errno = MPIR_Group_compare_impl(failed_grp, global_failed, &result);
if (mpi_errno) MPIR_ERR_POP(mpi_errno);
/* Create a subgroup without the failed procs */
mpi_errno = MPIR_Group_difference_impl(comm_grp, global_failed, &new_group_ptr);
if (mpi_errno) MPIR_ERR_POP(mpi_errno);
/* If that group isn't the same as what we think is failed locally, then
* mark it as such. */
if (result == MPI_UNEQUAL || errflag)
success = 0;
/* Do an allreduce to decide whether or not anyone thinks the group
* has changed */
mpi_errno_tmp = MPIR_Allreduce_group(MPI_IN_PLACE, &success, 1, MPI_INT, MPI_MIN, comm_ptr,
new_group_ptr, MPIR_AGREE_TAG, &errflag);
if (!success || errflag || mpi_errno_tmp)
success = 0;
values[0] = success;
values[1] = *flag;
/* Determine both the result of this function (mpi_errno) and the result
* of flag that will be returned to the user. */
MPIR_Allreduce_group(MPI_IN_PLACE, values, 2, MPI_INT, MPI_BAND, comm_ptr,
new_group_ptr, MPIR_AGREE_TAG, &errflag);
/* Ignore the result of the operation this time. Everyone will either
* return a failure because of !success earlier or they will return
* something useful for flag because of this operation. If there was a new
* failure in between the first allreduce and the second one, it's ignored
* here. */
if (failed_grp != MPIR_Group_empty)
MPIR_Group_release(failed_grp);
MPIR_Group_release(new_group_ptr);
MPIR_Group_release(comm_grp);
if (global_failed != MPIR_Group_empty)
MPIR_Group_release(global_failed);
success = values[0];
*flag = values[1];
if (!success) {
MPIR_ERR_SET(mpi_errno_tmp, MPIX_ERR_PROC_FAILED, "**mpix_comm_agree");
MPIR_ERR_ADD(mpi_errno, mpi_errno_tmp);
}
fn_exit:
MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPIR_COMM_AGREE);
return mpi_errno;
fn_fail:
goto fn_exit;
}
