69 строки
2.3 KiB
C
69 строки
2.3 KiB
C
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/*
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* $HEADER$
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*/
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/** @file:
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*
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* Populates global structure with process-specific information.
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*
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*
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*/
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#include <stdbool.h>
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#include <sys/types.h>
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#include "ns/name_server.h"
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/**
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* Process information structure
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*
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* The ompi_proc_info() function fills the pid field, obtains the process name, and
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* creates the process session directory, storing that information in the global
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* structure. The structure also holds path names to the stdin, stdout, and
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* stderr temp files - however, these are initialized elsewhere.
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*
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*/
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struct ompi_proc_info_t {
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bool init; /**< Certifies that values have been filled.
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* Certifies that the ompi_sys_info() function has been
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* called at least once so fields have valid values
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*/
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pid_t pid; /**< Local process ID for this process */
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ompi_process_name_t *name; /**< Process name structure */
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char *universe_session_dir; /**< Location of user writable temp dir.
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* The session directory has the form
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* <prefix><openmpi-sessions-user><universe><job><process>, where the prefix
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* can either be provided by the user via the
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* --tmpdir command-line flag, the use of one of several
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* environmental variables, or else a default location. The
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* function ompi_session_dir_init() develops
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* the name of this directory, creates it, and stores the name
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* in this location.
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*/
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char *job_session_dir; /**< Session directory for job */
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char *proc_session_dir; /**< Session directory for the process */
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char *sock_stdin; /**< Path name to temp file for stdin. */
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char *sock_stdout; /**< Path name to temp file for stdout. */
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char *sock_stderr; /**< Path name to temp file for stderr. */
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};
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typedef struct ompi_proc_info_t ompi_proc_info_t;
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extern ompi_proc_info_t ompi_process_info;
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/**
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* Global structure to store a wide range of information about the process.
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* ompi_proc_info populates a global variable with information about the process
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* being executing. This function should be
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* called only once to setup the information.
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*
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* @param None.
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*
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* @retval OMPI_SUCCESS Successfully initialized the various fields.
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* @retval OMPI_ERROR Failed to initialize one or more fields.
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*/
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int ompi_proc_info(void);
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