4b28cd18e9
One of the most important is the IOVBASE_TYPE which should be used all over the places for casting to and from the iov_base field of the iovec struct. The reason is because windows does not support any kind of implicit conversion (not even through void*). All conversions should be EXPLICIT. This commit was SVN r11328.
333 строки
11 KiB
C
333 строки
11 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*
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* This file is included at the bottom of ompi_config.h, and is
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* therefore a) after all the #define's that were output from
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* configure, and b) included in most/all files in Open MPI.
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*
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* Since this file is *only* ever included by ompi_config.h, and
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* ompi_config.h already has #ifndef/#endif protection, there is no
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* need to #ifndef/#endif protection here.
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*/
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#ifndef OPAL_CONFIG_H
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#error "opal_config_bottom.h should only be included from opal_config.h"
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#endif
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/*
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* If we build a static library, Visual C define the _LIB symbol. In the
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* case of a shared library _USERDLL get defined.
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*
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* OMPI_BUILDING and _LIB define how ompi_config.h
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* handles configuring all of Open MPI's "compatibility" code. Both
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* constants will always be defined by the end of ompi_config.h.
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*
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* OMPI_BUILDING affects how much compatibility code is included by
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* ompi_config.h. It will always be 1 or 0. The user can set the
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* value before including either mpi.h or ompi_config.h and it will be
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* respected. If ompi_config.h is included before mpi.h, it will
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* default to 1. If mpi.h is included before ompi_config.h, it will
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* default to 0.
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*/
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#ifndef OMPI_BUILDING
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#define OMPI_BUILDING 1
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#endif
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/***********************************************************************
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*
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* code that should be in ompi_config_bottom.h regardless of build
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* status
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*
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**********************************************************************/
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/* Do we have thread support? */
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#define OMPI_HAVE_THREAD_SUPPORT (OMPI_ENABLE_MPI_THREADS || OMPI_ENABLE_PROGRESS_THREADS)
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/***********************************************************************
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*
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* Windows library interface declaration code
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*
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**********************************************************************/
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#if !defined(__WINDOWS__)
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# if defined(_WIN32) || defined(WIN32) || defined(WIN64)
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# define __WINDOWS__
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# endif
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#endif /* !defined(__WINDOWS__) */
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#if defined(__WINDOWS__)
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# if defined(_USRDLL) /* building shared libraries (.DLL) */
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# if defined(OPAL_EXPORTS)
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# define OPAL_DECLSPEC __declspec(dllexport)
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# else
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# define OPAL_DECLSPEC __declspec(dllimport)
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# endif
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# if defined(OPAL_MODULE_EXPORTS)
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# define OPAL_MODULE_DECLSPEC __declspec(dllexport)
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# else
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# define OPAL_MODULE_DECLSPEC __declspec(dllimport)
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# endif
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# else /* building static library */
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# define OPAL_DECLSPEC
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# define OPAL_MODULE_DECLSPEC
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# endif
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# if OMPI_BUILDING
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# include "opal/win32/win_compat.h"
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# endif /* OMPI_BUILDING */
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#else
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/* On Unix - this define is plain useless */
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# define OPAL_DECLSPEC
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# define OPAL_MODULE_DECLSPEC
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#endif
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/*
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* Do we have <stdint.h>?
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*/
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#ifdef HAVE_STDINT_H
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#if defined(__cplusplus) && !defined(__STDC_LIMIT_MACROS)
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/* When using a C++ compiler, the max / min value #defines for std
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types are only included if __STDC_LIMIT_MACROS is set before
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including stdint.h */
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#define __STDC_LIMIT_MACROS
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#endif
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#include <stdint.h>
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#else
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#include "opal_stdint.h"
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#endif
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/***********************************************************************
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*
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* Code that is only for when building Open MPI or utilities that are
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* using the internals of Open MPI. It should not be included when
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* building MPI applications
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*
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**********************************************************************/
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#if OMPI_BUILDING
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/*
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* If we're in C, we may need to bring in the bool type and true/false
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* constants. OMPI_NEED_C_BOOL will be true if the compiler either
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* needs <stdbool.h> or doesn't define the bool type at all.
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*/
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#if !defined(__cplusplus)
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# if OMPI_NEED_C_BOOL
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# if OMPI_USE_STDBOOL_H
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/* If we're using <stdbool.h>, there is an implicit
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assumption that the C++ bool is the same size and has
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the same alignment. */
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# include <stdbool.h>
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# elif defined(__WINDOWS__)
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# define bool BOOL
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# define false FALSE
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# define true TRUE
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# else
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/* We need to create a bool type and ensure that it's the
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same size / alignment as the C++ bool size /
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alignment */
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# define false 0
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# define true 1
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# if SIZEOF_BOOL == SIZEOF_CHAR && OMPI_ALIGNMENT_CXX_BOOL == OMPI_ALIGNMENT_CHAR
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typedef char bool;
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# elif SIZEOF_BOOL == SIZEOF_SHORT && OMPI_ALIGNMENT_CXX_BOOL == OMPI_ALIGNMENT_SHORT
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typedef short bool;
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# elif SIZEOF_BOOL == SIZEOF_INT && OMPI_ALIGNMENT_CXX_BOOL == OMPI_ALIGNMENT_INT
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typedef int bool;
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# elif SIZEOF_BOOL == SIZEOF_LONG && OMPI_ALIGNMENT_CXX_BOOL == OMPI_ALIGNMENT_LONG
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typedef long bool;
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# elif defined(SIZEOF_LONG_LONG) && defined(OMPI_ALIGNMENT_LONG) && SIZEOF_BOOL == SIZEOF_LONG && OMPI_ALIGNMENT_CXX_BOOL == OMPI_ALIGNMENT_LONG
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typedef long long bool;
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# else
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# error Cannot find a C type that corresponds to the size and alignment of C++ bool!
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# endif
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# endif
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# endif
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#endif
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/*
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* Maximum size of a filename path.
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*/
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#include <limits.h>
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#if defined(PATH_MAX)
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#define OMPI_PATH_MAX (PATH_MAX + 1)
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#elif defined(_POSIX_PATH_MAX)
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#define OMPI_PATH_MAX (_POSIX_PATH_MAX + 1)
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#else
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#define OMPI_PATH_MAX 256
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#endif
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/*
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* Set the compile-time path-separator on this system and variable separator
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*/
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#ifdef __WINDOWS__
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#define OPAL_PATH_SEP "\\"
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#define OPAL_ENV_SEP ';'
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#else
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#define OPAL_PATH_SEP "/"
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#define OPAL_ENV_SEP ':'
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#endif
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/*
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* Do we want memory debugging?
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*
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* A few scenarios:
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*
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* 1. In the OMPI C library: we want these defines in all cases
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* 2. In the OMPI C++ bindings: we do not want them
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* 3. In the OMPI C++ executables: we do want them
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*
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* So for 1, everyone must include <ompi_config.h> first. For 2, the
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* C++ bindings will never include <ompi_config.h> -- they will only
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* include <mpi.h>, which includes <ompi_config.h>, but after
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* setting OMPI_BUILDING to 0 For 3, it's the same as 1 -- just include
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* <ompi_config.h> first.
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*
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* Give code that needs to include ompi_config.h but really can't have
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* this stuff enabled (like the memory manager code) a way to turn us
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* off
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*/
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#if OMPI_ENABLE_MEM_DEBUG && !defined(OMPI_DISABLE_ENABLE_MEM_DEBUG)
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/* It is safe to include opal/util/malloc.h here because a) it will only
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happen when we are building OMPI and therefore have a full OMPI
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source tree [including headers] available, and b) we guaranteed to
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*not* to include anything else via opal/util/malloc.h, so we won't
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have Cascading Includes Of Death. */
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# include "opal/util/malloc.h"
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# if defined(malloc)
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# undef malloc
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# endif
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# define malloc(size) opal_malloc((size), __FILE__, __LINE__)
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# if defined(calloc)
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# undef calloc
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# endif
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# define calloc(nmembers, size) opal_calloc((nmembers), (size), __FILE__, __LINE__)
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# if defined(realloc)
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# undef realloc
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# endif
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# define realloc(ptr, size) opal_realloc((ptr), (size), __FILE__, __LINE__)
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# if defined(free)
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# undef free
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# endif
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# define free(ptr) opal_free((ptr), __FILE__, __LINE__)
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/*
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* If we're mem debugging, make the OMPI_DEBUG_ZERO resolve to memset
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*/
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# include <string.h>
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# define OMPI_DEBUG_ZERO(obj) memset(&(obj), 0, sizeof(obj))
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#else
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# define OMPI_DEBUG_ZERO(obj)
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#endif
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/*
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* printf functions for portability (only when building Open MPI)
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*/
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#if !defined(HAVE_VASPRINTF) || !defined(HAVE_VSNPRINTF)
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#include <stdarg.h>
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#include <stdlib.h>
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#endif
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#if !defined(HAVE_ASPRINTF) || !defined(HAVE_SNPRINTF) || !defined(HAVE_VASPRINTF) || !defined(HAVE_VSNPRINTF)
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#include "opal/util/printf.h"
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#endif
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#ifndef HAVE_ASPRINTF
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# define asprintf opal_asprintf
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#endif
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#ifndef HAVE_SNPRINTF
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# define snprintf opal_snprintf
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#endif
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#ifndef HAVE_VASPRINTF
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# define vasprintf opal_vasprintf
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#endif
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#ifndef HAVE_VSNPRINTF
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# define vsnprintf opal_vsnprintf
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#endif
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/*
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* Some platforms (Solaris) have a broken qsort implementation. Work
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* around by using our own.
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*/
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#if OMPI_HAVE_BROKEN_QSORT
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#ifdef qsort
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#undef qsort
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#endif
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#include "opal/util/qsort.h"
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#define qsort opal_qsort
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#endif
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/*
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* On some homogenous big-iron machines (Sandia's Red Storm), there
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* are no htonl and friends. If that's the case, provide stubs. I
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* would hope we never find a platform that doesn't have these macros
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* and would want to talk to the outside world... On other platforms
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* (like Windows) we fail to detect them correctly.
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*/
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#ifndef __WINDOWS__
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#ifndef HAVE_HTONL
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static inline uint32_t htonl(uint32_t hostvar) { return hostvar; }
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#endif
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#ifndef HAVE_NTOHL
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static inline uint32_t ntohl(uint32_t netvar) { return netvar; }
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#endif
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#ifndef HAVE_HTONS
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static inline uint16_t htons(uint16_t hostvar) { return hostvar; }
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#endif
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#ifndef HAVE_NTOHS
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static inline uint16_t ntohs(uint16_t netvar) { return netvar; }
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#endif
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#endif /* WINDOWS */
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/*
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* Define __func__-preprocessor directive if the compiler does not
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* already define it. Define it to __FILE__ so that we at least have
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* a clue where the developer is trying to indicate where the error is
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* coming from (assuming that __func__ is typically used for
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* printf-style debugging).
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*/
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#if defined(HAVE_DECL___FUNC__) && !HAVE_DECL___FUNC__
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#define __func__ __FILE__
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#endif
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/**
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* Because of the way we're using the opal_object inside Open MPI (i.e.
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* dynamic resolution at run-time to derive all objects from the basic
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* type), on Windows we have to build everything on C++ mode, simply
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* because the C mode does not support dynamic resolution in DLL. Therefore,
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* no automatic conversion is allowed. All types have to be explicitly casted
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* or the compiler generate an error. This is true even for the void* type. As
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* we use void* to silence others compilers in the resolution of the addr member
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* of the iovec structure, we have now to find a way around. The simplest solution
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* is to define a special type for this field (just for casting). It can be
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* set to void* on all platforms with the exception of windows where it has to be
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* char*.
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*/
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#if defined(__WINDOWS__)
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#define IOVBASE_TYPE char
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#else
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#define IOVBASE_TYPE void
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#endif /* defined(__WINDOWS__) */
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#endif /* OMPI_BUILDING */
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