e9e4d2a4bc
The Open MPI code base assumed that asprintf always behaved like the FreeBSD variant, where ptr is set to NULL on error. However, the C standard (and Linux) only guarantee that the return code will be -1 on error and leave ptr undefined. Rather than fix all the usage in the code, we use opal_asprintf() wrapper instead, which guarantees the BSD-like behavior of ptr always being set to NULL. In addition to being correct, this will fix many, many warnings in the Open MPI code base. Signed-off-by: Brian Barrett <bbarrett@amazon.com>
195 строки
7.0 KiB
C
195 строки
7.0 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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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) 2004-2008 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 (c) 2007-2016 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2012-2015 Los Alamos National Security, LLC. All rights
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* reserved.
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* Copyright (c) 2018 Amazon.com, Inc. or its affiliates. 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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/*
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* MPI portion of debugger support: initially based on the
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* TotalView/Etnus API for debuggers to attach to MPI jobs.
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*
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* There is a lengthy explanation of how OMPI handles parallel
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* debuggers attaching to MPI jobs in orte/tools/orterun/debuggers.c.
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*/
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#include "ompi_config.h"
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif /* HAVE_UNISTD_H */
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#ifdef HAVE_DIRENT_H
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#include <dirent.h>
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#endif
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include "opal/mca/base/base.h"
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#include "opal/util/argv.h"
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#include "opal/util/printf.h"
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#include "opal/mca/installdirs/installdirs.h"
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#include "debuggers.h"
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#include "ompi/mca/rte/rte.h"
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/**
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* BEWARE: The following headers are required by optimized builds in order
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* to get access to the type information. Some compilers remove all type
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* information on optimized build, and as a result we are unable to access
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* the fields structure (i.e. to get their displacement). This file is
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* included in the optimized build just to provide us with this missing
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* informations. Therefore, it always have to be compiled with the -g flag,
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* otherwise the type information will be missing and the parallel
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* debuggers will be unable to initialize the Open MPI debug library.
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*/
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#include "opal/class/opal_list.h"
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#include "opal/class/opal_free_list.h"
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#include "ompi/request/request.h"
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#include "ompi/mca/pml/base/pml_base_request.h"
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#include "ompi/mca/pml/base/pml_base_sendreq.h"
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#include "ompi/mca/pml/base/pml_base_recvreq.h"
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#include "opal/class/opal_pointer_array.h"
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#include "ompi/communicator/communicator.h"
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#include "ompi/mca/topo/topo.h"
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#include "ompi/group/group.h"
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#include "opal/datatype/opal_datatype.h"
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#include "ompi/datatype/ompi_datatype.h"
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#include "ompi/include/mpi.h"
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#if defined(OMPI_MSGQ_DLL)
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/* This variable is old/deprecated -- the mpimsgq_dll_locations[]
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method is preferred because it's more flexible */
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OMPI_DECLSPEC char MPIR_dll_name[] = OMPI_MSGQ_DLL;
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#endif /* defined(OMPI_MSGQ_DLL) */
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OMPI_DECLSPEC char **mpidbg_dll_locations = NULL;
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OMPI_DECLSPEC char **mpimsgq_dll_locations = NULL;
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OMPI_DECLSPEC int MPIR_debug_typedefs_sizeof[] = {
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sizeof(short),
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sizeof(int),
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sizeof(long),
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sizeof(long long),
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sizeof(void*),
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sizeof(bool),
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sizeof(size_t)
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};
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/*
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* Values defined by the standardized interface; do not change these
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* values
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*/
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#define MPIR_DEBUG_SPAWNED 1
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#define MPIR_DEBUG_ABORTING 2
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/**
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* BEWARE: Try to outsmart some compilers. In some cases, when variables
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* are defined but not used, some compilers will optimized them out from
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* the build. As we need to be able to access the structure sizes from the
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* debugged program (in the case where the MPI library and the application
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* is compiled with a different architecture flag than the parallel
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* debugger, 32 vs. 64 bits), we have to have these variables defined.
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*/
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OMPI_DECLSPEC opal_list_item_t* opal_list_item_t_type_force_inclusion = NULL;
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OMPI_DECLSPEC opal_list_t* opal_list_t_type_force_inclusion = NULL;
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OMPI_DECLSPEC opal_free_list_item_t* opal_free_list_item_t_type_force_inclusion = NULL;
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OMPI_DECLSPEC opal_free_list_t* opal_free_list_t_type_force_inclusion = NULL;
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OMPI_DECLSPEC ompi_request_t* ompi_request_t_type_force_inclusion = NULL;
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OMPI_DECLSPEC mca_pml_base_request_t* mca_pml_base_request_t_type_force_inclusion = NULL;
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OMPI_DECLSPEC mca_pml_base_send_request_t* mca_pml_base_send_request_t_type_force_inclusion = NULL;
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OMPI_DECLSPEC mca_pml_base_recv_request_t* mca_pml_base_recv_request_t_type_force_inclusion = NULL;
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OMPI_DECLSPEC opal_pointer_array_t* opal_pointer_array_t_type_force_inclusion = NULL;
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OMPI_DECLSPEC ompi_communicator_t* ompi_communicator_t_type_force_inclusion = NULL;
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OMPI_DECLSPEC ompi_group_t* ompi_group_t_type_force_inclusion = NULL;
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OMPI_DECLSPEC ompi_status_public_t* ompi_status_public_t_type_force_inclusion = NULL;
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OMPI_DECLSPEC opal_datatype_t* opal_datatype_t_type_force_inclusion = NULL;
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OMPI_DECLSPEC ompi_datatype_t* ompi_datatype_t_type_force_inclusion = NULL;
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OMPI_DECLSPEC volatile int MPIR_debug_gate = 0;
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static char *ompi_debugger_dll_path = NULL;
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/* Check for a file in few direct ways for portability */
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static void check(char *dir, char *file, char **locations)
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{
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char *str;
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opal_asprintf(&str, "%s/%s.so", dir, file);
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#if defined(HAVE_SYS_STAT_H)
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{
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struct stat buf;
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/* Use stat() */
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if (0 == stat(str, &buf)) {
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opal_argv_append_nosize(&locations, file);
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}
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}
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#else
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{
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FILE *fp;
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/* Just try to open the file */
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if (NULL != (fp = fopen(str, "r"))) {
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fclose(fp);
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opal_argv_append_nosize(&locations, file);
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}
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}
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#endif /* defined(HAVE_SYS_STAT_H) */
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free(str);
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}
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extern void
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ompi_debugger_setup_dlls(void)
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{
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int i;
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char **dirs, **tmp1 = NULL, **tmp2 = NULL;
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ompi_debugger_dll_path = opal_install_dirs.opallibdir;
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(void) mca_base_var_register("ompi", "ompi", "debugger", "dll_path",
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"List of directories where MPI_INIT should search for debugger plugins",
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MCA_BASE_VAR_TYPE_STRING, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY,
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&ompi_debugger_dll_path);
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/* Search the directory for MPI debugger DLLs */
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if (NULL != ompi_debugger_dll_path) {
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dirs = opal_argv_split(ompi_debugger_dll_path, ':');
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for (i = 0; dirs[i] != NULL; ++i) {
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check(dirs[i], OMPI_MPIHANDLES_DLL_PREFIX, tmp1);
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check(dirs[i], OMPI_MSGQ_DLL_PREFIX, tmp2);
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}
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opal_argv_free(dirs);
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}
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/* Now that we have a full list of directories, assign the argv
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arrays to the global variables (since the debugger may read the
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global variables at any time, we want to ensure that they have
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non-NULL values only when the entire array is ready). */
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mpimsgq_dll_locations = tmp1;
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mpidbg_dll_locations = tmp2;
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}
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