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openmpi/orte/runtime/orte_wakeup.h
Ralph Castain 2ed0e60321 Bring some sanity to the exit code returned by mpirun. Ensure that we provide a non-zero code if something goes wrong, including someone exiting after calling mpi_init without calling mpi_finalize.
Jeff is preparing an (undoubtedly lengthy) explanation/matrix of how these codes are determined for the OMPI FAQ.

This commit was SVN r17879.
2008-03-19 19:00:51 +00:00

75 строки
2.7 KiB
C

/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2006 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
/**
* @file
*
* Interface for forcibly waking up orterun.
*/
#ifndef ORTE_WAKEUP_H
#define ORTE_WAKEUP_H
#include "orte_config.h"
#include "orte/types.h"
#include "opal/util/output.h"
#include "orte/runtime/orte_globals.h"
#include "orte/util/name_fns.h"
BEGIN_C_DECLS
/**
* Define a macro for updating the orte_exit_status
* The macro provides a convenient way of doing this
* so that we can add thread locking at some point
* since the orte_exit_status is a global variable.
*
* Ensure that we do not overwrite the exit status if it has
* already been set to some non-zero value. If we don't make
* this check, then different parts of the code could overwrite
* each other's exit status in the case of abnormal termination.
*
* For example, if a process aborts, we would record the initial
* exit code from the aborted process. However, subsequent processes
* will have been aborted by signal as we kill the job. We don't want
* the subsequent processes to overwrite the original exit code so
* we can tell the user the exit code from the process that caused
* the whole thing to happen.
*/
#define ORTE_UPDATE_EXIT_STATUS(newstatus) \
do { \
if (0 == orte_exit_status && 0 != newstatus) { \
OPAL_OUTPUT_VERBOSE((1, orte_debug_output, \
"%s:%s(%d) updating exit status to %d", \
ORTE_NAME_PRINT(ORTE_PROC_MY_NAME), \
__FILE__, __LINE__, newstatus)); \
orte_exit_status = newstatus; \
} \
} while(0);
/**
* Wakeup orterun by reporting the termination of all processes
*/
ORTE_DECLSPEC int orte_wakeup(void);
END_C_DECLS
#endif /* #ifndef ORTE_WAKEUP_H */