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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
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/*
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* (C) 2002 by Argonne National Laboratory.
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* See COPYRIGHT in top-level directory.
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*/
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#include "mpiimpl.h"
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/* -- Begin Profiling Symbol Block for routine MPI_Type_contigous */
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#if defined(HAVE_PRAGMA_WEAK)
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#pragma weak MPI_Type_contiguous = PMPI_Type_contiguous
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#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
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#pragma _HP_SECONDARY_DEF PMPI_Type_contiguous MPI_Type_contiguous
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#elif defined(HAVE_PRAGMA_CRI_DUP)
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#pragma _CRI duplicate MPI_Type_contiguous as PMPI_Type_contiguous
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#elif defined(HAVE_WEAK_ATTRIBUTE)
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int MPI_Type_contiguous(int count, MPI_Datatype oldtype, MPI_Datatype *newtype) __attribute__((weak,alias("PMPI_Type_contiguous")));
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#endif
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/* -- End Profiling Symbol Block */
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/* Define MPICH_MPI_FROM_PMPI if weak symbols are not supported to build
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the MPI routines. You can use USE_WEAK_SYMBOLS to see if MPICH is
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using weak symbols to implement the MPI routines. */
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#ifndef MPICH_MPI_FROM_PMPI
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#undef MPI_Type_contiguous
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#define MPI_Type_contiguous PMPI_Type_contiguous
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#undef FUNCNAME
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#define FUNCNAME MPIR_Type_contiguous_impl
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#undef FCNAME
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#define FCNAME MPL_QUOTE(FUNCNAME)
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int MPIR_Type_contiguous_impl(int count,
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MPI_Datatype oldtype,
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MPI_Datatype *newtype)
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{
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int mpi_errno = MPI_SUCCESS;
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MPID_Datatype *new_dtp;
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MPI_Datatype new_handle;
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mpi_errno = MPID_Type_contiguous(count,
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oldtype,
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&new_handle);
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if (mpi_errno != MPI_SUCCESS) goto fn_fail;
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MPID_Datatype_get_ptr(new_handle, new_dtp);
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mpi_errno = MPID_Datatype_set_contents(new_dtp,
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MPI_COMBINER_CONTIGUOUS,
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1, /* ints (count) */
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0,
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1,
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&count,
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NULL,
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&oldtype);
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if (mpi_errno != MPI_SUCCESS) goto fn_fail;
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MPID_OBJ_PUBLISH_HANDLE(*newtype, new_handle);
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fn_exit:
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return mpi_errno;
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fn_fail:
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goto fn_exit;
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}
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#undef FUNCNAME
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#define FUNCNAME MPIR_Type_contiguous_x_impl
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#undef FCNAME
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#define FCNAME MPL_QUOTE(FUNCNAME)
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int MPIR_Type_contiguous_x_impl(MPI_Count count,
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MPI_Datatype oldtype,
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MPI_Datatype *newtype)
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{
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/* to make 'count' fit MPI-3 type processing routines (which take integer
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* counts), we construct a type consisting of N INT_MAX chunks followed by
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* a remainder. e.g for a count of 4000000000 bytes you would end up with
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* one 2147483647-byte chunk followed immediately by a 1852516353-byte
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* chunk */
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MPI_Datatype chunks, remainder;
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MPI_Aint lb, extent, disps[2];
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int blocklens[2];
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MPI_Datatype types[2];
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int mpi_errno;
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/* truly stupendously large counts will overflow an integer with this math,
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* but that is a problem for a few decades from now. Sorry, few decades
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* from now! */
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MPIU_Assert(count/INT_MAX == (int)(count/INT_MAX));
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int c = (int)(count/INT_MAX); /* OK to cast until 'count' is 256 bits */
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int r = count%INT_MAX;
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mpi_errno = MPIR_Type_vector_impl(c, INT_MAX, INT_MAX, oldtype, &chunks);
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if (mpi_errno != MPI_SUCCESS) goto fn_fail;
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mpi_errno = MPIR_Type_contiguous_impl(r, oldtype, &remainder);
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if (mpi_errno != MPI_SUCCESS) goto fn_fail;
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MPIR_Type_get_extent_impl(oldtype, &lb, &extent);
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blocklens[0] = 1; blocklens[1] = 1;
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disps[0] = 0; disps[1] = c*extent*INT_MAX;
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types[0] = chunks; types[1] = remainder;
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mpi_errno = MPIR_Type_create_struct_impl(2, blocklens, disps, types, newtype);
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MPIR_Type_free_impl(&chunks);
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MPIR_Type_free_impl(&remainder);
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fn_exit:
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return mpi_errno;
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fn_fail:
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goto fn_exit;
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}
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#endif
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#undef FUNCNAME
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#define FUNCNAME MPI_Type_contiguous
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#undef FCNAME
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#define FCNAME MPL_QUOTE(FUNCNAME)
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/*@
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MPI_Type_contiguous - Creates a contiguous datatype
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Input Parameters:
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+ count - replication count (nonnegative integer)
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- oldtype - old datatype (handle)
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Output Parameters:
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. newtype - new datatype (handle)
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.N ThreadSafe
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.N Fortran
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.N Errors
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.N MPI_SUCCESS
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.N MPI_ERR_TYPE
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.N MPI_ERR_COUNT
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.N MPI_ERR_EXHAUSTED
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@*/
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int MPI_Type_contiguous(int count,
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MPI_Datatype oldtype,
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MPI_Datatype *newtype)
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{
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int mpi_errno = MPI_SUCCESS;
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MPID_MPI_STATE_DECL(MPID_STATE_MPI_TYPE_CONTIGUOUS);
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MPIR_ERRTEST_INITIALIZED_ORDIE();
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MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
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MPID_MPI_FUNC_ENTER(MPID_STATE_MPI_TYPE_CONTIGUOUS);
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# ifdef HAVE_ERROR_CHECKING
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{
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MPID_BEGIN_ERROR_CHECKS;
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{
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MPID_Datatype *datatype_ptr = NULL;
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MPIR_ERRTEST_COUNT(count, mpi_errno);
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MPIR_ERRTEST_DATATYPE(oldtype, "datatype", mpi_errno);
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if (HANDLE_GET_KIND(oldtype) != HANDLE_KIND_BUILTIN) {
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MPID_Datatype_get_ptr(oldtype, datatype_ptr);
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MPID_Datatype_valid_ptr(datatype_ptr, mpi_errno);
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if (mpi_errno != MPI_SUCCESS) goto fn_fail;
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}
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}
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MPID_END_ERROR_CHECKS;
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}
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# endif /* HAVE_ERROR_CHECKING */
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/* ... body of routine ... */
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mpi_errno = MPIR_Type_contiguous_impl(count, oldtype, newtype);
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if (mpi_errno) MPIR_ERR_POP(mpi_errno);
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/* ... end of body of routine ... */
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fn_exit:
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MPID_MPI_FUNC_EXIT(MPID_STATE_MPI_TYPE_CONTIGUOUS);
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MPID_THREAD_CS_EXIT(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
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return mpi_errno;
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fn_fail:
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/* --BEGIN ERROR HANDLING-- */
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# ifdef HAVE_ERROR_CHECKING
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{
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mpi_errno = MPIR_Err_create_code(
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mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER, "**mpi_type_contiguous",
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"**mpi_type_contiguous %d %D %p", count, oldtype, newtype);
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}
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# endif
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mpi_errno = MPIR_Err_return_comm( NULL, FCNAME, mpi_errno );
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goto fn_exit;
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/* --END ERROR HANDLING-- */
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}
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