60 строки
2.2 KiB
C
60 строки
2.2 KiB
C
/*
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* Copyright (c) 2004-2007 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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#ifndef OPAL_FEW_H
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#define OPAL_FEW_H
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#include "opal_config.h"
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BEGIN_C_DECLS
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/**
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* Forks, execs, and waits for a subordinate program
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*
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* @param argv Null-terminated argument vector; argv[0] is the program
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* (same as arguments to execvp())
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*
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* @param status Upon success, will be filled with the return status
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* from waitpid(2). The WIF* macros can be used to examine the value
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* (see waitpid(2)).
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*
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* @retval OPAL_SUCCESS If the child launched and exited.
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* @retval OPAL_ERR_IN_ERRNO If a failure occurred, errno should be
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* examined for the specific error.
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*
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* This function forks, execs, and waits for an executable to
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* complete. The input argv must be a NULL-terminated array (perhaps
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* built with the opal_arr_*() interface). Upon success, OPAL_SUCCESS
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* is returned. This function will wait either until the child
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* process has exited or waitpid() returns an error other than EINTR.
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*
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* Note that a return of OPAL_SUCCESS does \em not imply that the child
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* process exited successfully -- it simply indicates that the child
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* process exited. The WIF* macros (see waitpid(2)) should be used to
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* examine the status to see hold the child exited.
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*
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* \warning This function should not be called if \c orte_init()
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* or \c MPI_Init() have been called. This function is not
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* safe in a multi-threaded environment in which a handler
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* for \c SIGCHLD has been registered.
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*/
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OPAL_DECLSPEC int opal_few(char *argv[], int *status);
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END_C_DECLS
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#endif /* OPAL_FEW_H */
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