cf377db823
Features: - Support for an override parameter file (openmpi-mca-param-override.conf). Variable values in this file can not be overridden by any file or environment value. - Support for boolean, unsigned, and unsigned long long variables. - Support for true/false values. - Support for enumerations on integer variables. - Support for MPIT scope, verbosity, and binding. - Support for command line source. - Support for setting variable source via the environment using OMPI_MCA_SOURCE_<var name>=source (either command or file:filename) - Cleaner API. - Support for variable groups (equivalent to MPIT categories). Notes: - Variables must be created with a backing store (char **, int *, or bool *) that must live at least as long as the variable. - Creating a variable with the MCA_BASE_VAR_FLAG_SETTABLE enables the use of mca_base_var_set_value() to change the value. - String values are duplicated when the variable is registered. It is up to the caller to free the original value if necessary. The new value will be freed by the mca_base_var system and must not be freed by the user. - Variables with constant scope may not be settable. - Variable groups (and all associated variables) are deregistered when the component is closed or the component repository item is freed. This prevents a segmentation fault from accessing a variable after its component is unloaded. - After some discussion we decided we should remove the automatic registration of component priority variables. Few component actually made use of this feature. - The enumerator interface was updated to be general enough to handle future uses of the interface. - The code to generate ompi_info output has been moved into the MCA variable system. See mca_base_var_dump(). opal: update core and components to mca_base_var system orte: update core and components to mca_base_var system ompi: update core and components to mca_base_var system This commit also modifies the rmaps framework. The following variables were moved from ppr and lama: rmaps_base_pernode, rmaps_base_n_pernode, rmaps_base_n_persocket. Both lama and ppr create synonyms for these variables. This commit was SVN r28236.
548 строки
17 KiB
C
548 строки
17 KiB
C
/*
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* Copyright (c) 2004-2008 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 (c) 2006-2007 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2013 Los Alamos National Security, LLC. All rights reserved.
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*
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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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#include "opal_config.h"
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#include "opal/constants.h"
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/* This component will only be compiled on Linux, where we are
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guaranteed to have <unistd.h> and friends */
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#include <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <ctype.h>
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#ifdef HAVE_TIME_H
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#include <time.h>
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#endif
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#include <sys/param.h> /* for HZ to convert jiffies to actual time */
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#include "opal/dss/dss_types.h"
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#include "opal/util/argv.h"
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#include "opal/util/printf.h"
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#include "pstat_linux.h"
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/*
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* API functions
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*/
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static int linux_module_init(void);
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static int query(pid_t pid,
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opal_pstats_t *stats,
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opal_node_stats_t *nstats);
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static int linux_module_fini(void);
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/*
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* Linux pstat module
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*/
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const opal_pstat_base_module_t opal_pstat_linux_module = {
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/* Initialization function */
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linux_module_init,
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query,
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linux_module_fini
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};
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#define OPAL_STAT_MAX_LENGTH 1024
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/* Local functions */
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static char *local_getline(FILE *fp);
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static char *local_stripper(char *data);
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static void local_getfields(char *data, char ***fields);
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/* Local data */
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static char input[OPAL_STAT_MAX_LENGTH];
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static int linux_module_init(void)
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{
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return OPAL_SUCCESS;
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}
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static int linux_module_fini(void)
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{
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return OPAL_SUCCESS;
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}
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static char *next_field(char *ptr, int barrier)
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{
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int i=0;
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/* we are probably pointing to the last char
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* of the current field, so look for whitespace
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*/
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while (!isspace(*ptr) && i < barrier) {
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ptr++; /* step over the current char */
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i++;
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}
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/* now look for the next field */
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while (isspace(*ptr) && i < barrier) {
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ptr++;
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i++;
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}
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return ptr;
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}
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static float convert_value(char *value)
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{
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char *ptr;
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float fval;
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/* compute base value */
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fval = (float)strtoul(value, &ptr, 10);
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/* get the unit multiplier */
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if (NULL != ptr && NULL != strstr(ptr, "kB")) {
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fval /= 1024.0;
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}
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return fval;
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}
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static int query(pid_t pid,
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opal_pstats_t *stats,
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opal_node_stats_t *nstats)
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{
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char data[4096];
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int fd;
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size_t numchars;
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char *ptr, *eptr;
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int i;
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int len, itime;
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double dtime;
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FILE *fp;
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char *dptr, *value;
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char **fields;
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opal_diskstats_t *ds;
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opal_netstats_t *ns;
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if (NULL != stats) {
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/* record the time of this sample */
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gettimeofday(&stats->sample_time, NULL);
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/* check the nstats - don't do gettimeofday twice
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* as it is expensive
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*/
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if (NULL != nstats) {
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nstats->sample_time.tv_sec = stats->sample_time.tv_sec;
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nstats->sample_time.tv_usec = stats->sample_time.tv_usec;
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}
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} else if (NULL != nstats) {
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/* record the time of this sample */
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gettimeofday(&nstats->sample_time, NULL);
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}
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if (NULL != stats) {
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/* create the stat filename for this proc */
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numchars = snprintf(data, sizeof(data), "/proc/%d/stat", pid);
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if (numchars >= sizeof(data)) {
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return OPAL_ERR_VALUE_OUT_OF_BOUNDS;
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}
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if (0 > (fd = open(data, O_RDONLY))) {
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/* can't access this file - most likely, this means we
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* aren't really on a supported system, or the proc no
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* longer exists. Just return an error
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*/
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return OPAL_ERR_FILE_OPEN_FAILURE;
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}
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/* absorb all of the file's contents in one gulp - we'll process
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* it once it is in memory for speed
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*/
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memset(data, 0, sizeof(data));
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len = read(fd, data, sizeof(data)-1);
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if (len < 0) {
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/* This shouldn't happen! */
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close(fd);
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return OPAL_ERR_FILE_OPEN_FAILURE;
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}
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close(fd);
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/* remove newline at end */
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data[len] = '\0';
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/* the stat file consists of a single line in a carefully formatted
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* form. Parse it field by field as per proc(3) to get the ones we want
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*/
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/* we don't need to read the pid from the file - we already know it! */
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stats->pid = pid;
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/* the cmd is surrounded by parentheses - find the start */
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if (NULL == (ptr = strchr(data, '('))) {
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/* no cmd => something wrong with data, return error */
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return OPAL_ERR_BAD_PARAM;
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}
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/* step over the paren */
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ptr++;
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/* find the ending paren */
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if (NULL == (eptr = strchr(ptr, ')'))) {
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/* no end to cmd => something wrong with data, return error */
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return OPAL_ERR_BAD_PARAM;
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}
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/* save the cmd name, up to the limit of the array */
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i = 0;
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while (ptr < eptr && i < OPAL_PSTAT_MAX_STRING_LEN) {
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stats->cmd[i++] = *ptr++;
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}
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/* move to the next field in the data */
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ptr = next_field(eptr, len);
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/* next is the process state - a single character */
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stats->state[0] = *ptr;
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/* move to next field */
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ptr = next_field(ptr, len);
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/* skip fields until we get to the times */
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ptr = next_field(ptr, len); /* ppid */
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ptr = next_field(ptr, len); /* pgrp */
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ptr = next_field(ptr, len); /* session */
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ptr = next_field(ptr, len); /* tty_nr */
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ptr = next_field(ptr, len); /* tpgid */
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ptr = next_field(ptr, len); /* flags */
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ptr = next_field(ptr, len); /* minflt */
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ptr = next_field(ptr, len); /* cminflt */
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ptr = next_field(ptr, len); /* majflt */
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ptr = next_field(ptr, len); /* cmajflt */
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/* grab the process time usage fields */
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itime = strtoul(ptr, &ptr, 10); /* utime */
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itime += strtoul(ptr, &ptr, 10); /* add the stime */
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/* convert to time in seconds */
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dtime = (double)itime / (double)HZ;
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stats->time.tv_sec = (int)dtime;
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stats->time.tv_usec = (int)(1000000.0 * (dtime - stats->time.tv_sec));
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/* move to next field */
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ptr = next_field(ptr, len);
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/* skip fields until we get to priority */
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ptr = next_field(ptr, len); /* cutime */
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ptr = next_field(ptr, len); /* cstime */
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/* save the priority */
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stats->priority = strtol(ptr, &ptr, 10);
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/* move to next field */
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ptr = next_field(ptr, len);
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/* skip nice */
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ptr = next_field(ptr, len);
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/* get number of threads */
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stats->num_threads = strtoul(ptr, &ptr, 10);
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/* move to next field */
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ptr = next_field(ptr, len);
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/* skip fields until we get to processor id */
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ptr = next_field(ptr, len); /* itrealvalue */
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ptr = next_field(ptr, len); /* starttime */
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ptr = next_field(ptr, len); /* vsize */
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ptr = next_field(ptr, len); /* rss */
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ptr = next_field(ptr, len); /* rss limit */
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ptr = next_field(ptr, len); /* startcode */
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ptr = next_field(ptr, len); /* endcode */
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ptr = next_field(ptr, len); /* startstack */
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ptr = next_field(ptr, len); /* kstkesp */
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ptr = next_field(ptr, len); /* kstkeip */
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ptr = next_field(ptr, len); /* signal */
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ptr = next_field(ptr, len); /* blocked */
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ptr = next_field(ptr, len); /* sigignore */
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ptr = next_field(ptr, len); /* sigcatch */
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ptr = next_field(ptr, len); /* wchan */
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ptr = next_field(ptr, len); /* nswap */
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ptr = next_field(ptr, len); /* cnswap */
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ptr = next_field(ptr, len); /* exit_signal */
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/* finally - get the processor */
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stats->processor = strtol(ptr, NULL, 10);
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/* that's all we care about from this data - ignore the rest */
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/* now create the status filename for this proc */
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memset(data, 0, sizeof(data));
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numchars = snprintf(data, sizeof(data), "/proc/%d/status", pid);
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if (numchars >= sizeof(data)) {
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return OPAL_ERR_VALUE_OUT_OF_BOUNDS;
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}
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if (NULL == (fp = fopen(data, "r"))) {
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/* ignore this */
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return OPAL_SUCCESS;
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}
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/* parse it according to proc(3) */
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while (NULL != (dptr = local_getline(fp))) {
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if (NULL == (value = local_stripper(dptr))) {
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/* cannot process */
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continue;
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}
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/* look for VmPeak */
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if (0 == strncmp(dptr, "VmPeak", strlen("VmPeak"))) {
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stats->peak_vsize = convert_value(value);
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} else if (0 == strncmp(dptr, "VmSize", strlen("VmSize"))) {
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stats->vsize = convert_value(value);
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} else if (0 == strncmp(dptr, "VmRSS", strlen("VmRSS"))) {
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stats->rss = convert_value(value);
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}
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}
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fclose(fp);
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}
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if (NULL != nstats) {
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/* get the loadavg data */
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if (0 > (fd = open("/proc/loadavg", O_RDONLY))) {
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/* not an error if we don't find this one as it
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* isn't critical
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*/
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goto diskstats;
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}
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/* absorb all of the file's contents in one gulp - we'll process
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* it once it is in memory for speed
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*/
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memset(data, 0, sizeof(data));
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len = read(fd, data, sizeof(data)-1);
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close(fd);
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/* remove newline at end */
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data[len] = '\0';
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/* we only care about the first three numbers */
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nstats->la = strtof(data, &ptr);
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nstats->la5 = strtof(ptr, &eptr);
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nstats->la15 = strtof(eptr, NULL);
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/* see if we can open the meminfo file */
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if (NULL == (fp = fopen("/proc/meminfo", "r"))) {
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/* ignore this */
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goto diskstats;
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}
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/* read the file one line at a time */
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while (NULL != (dptr = local_getline(fp))) {
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if (NULL == (value = local_stripper(dptr))) {
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/* cannot process */
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continue;
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}
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if (0 == strcmp(dptr, "MemTotal")) {
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nstats->total_mem = convert_value(value);
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} else if (0 == strcmp(dptr, "MemFree")) {
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nstats->free_mem = convert_value(value);
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} else if (0 == strcmp(dptr, "Buffers")) {
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nstats->buffers = convert_value(value);
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} else if (0 == strcmp(dptr, "Cached")) {
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nstats->cached = convert_value(value);
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} else if (0 == strcmp(dptr, "SwapCached")) {
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nstats->swap_cached = convert_value(value);
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} else if (0 == strcmp(dptr, "SwapTotal")) {
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nstats->swap_total = convert_value(value);
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} else if (0 == strcmp(dptr, "SwapFree")) {
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nstats->swap_free = convert_value(value);
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} else if (0 == strcmp(dptr, "Mapped")) {
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nstats->mapped = convert_value(value);
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}
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}
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fclose(fp);
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diskstats:
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/* look for the diskstats file */
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if (NULL == (fp = fopen("/proc/diskstats", "r"))) {
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/* not an error if we don't find this one as it
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* isn't critical
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*/
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goto netstats;
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}
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/* read the file one line at a time */
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while (NULL != (dptr = local_getline(fp))) {
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/* look for the local disks */
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if (NULL == strstr(dptr, "sd")) {
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continue;
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}
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/* parse to extract the fields */
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fields = NULL;
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local_getfields(dptr, &fields);
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if (NULL == fields) {
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continue;
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}
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if (14 < opal_argv_count(fields)) {
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opal_argv_free(fields);
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continue;
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}
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/* pack the ones of interest into the struct */
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ds = OBJ_NEW(opal_diskstats_t);
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ds->disk = strdup(fields[2]);
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ds->num_reads_completed = strtoul(fields[3], NULL, 10);
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ds->num_reads_merged = strtoul(fields[4], NULL, 10);
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ds->num_sectors_read = strtoul(fields[5], NULL, 10);
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ds->milliseconds_reading = strtoul(fields[6], NULL, 10);
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ds->num_writes_completed = strtoul(fields[7], NULL, 10);
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ds->num_writes_merged = strtoul(fields[8], NULL, 10);
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ds->num_sectors_written = strtoul(fields[9], NULL, 10);
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ds->milliseconds_writing = strtoul(fields[10], NULL, 10);
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ds->num_ios_in_progress = strtoul(fields[11], NULL, 10);
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ds->milliseconds_io = strtoul(fields[12], NULL, 10);
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ds->weighted_milliseconds_io = strtoul(fields[13], NULL, 10);
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opal_list_append(&nstats->diskstats, &ds->super);
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opal_argv_free(fields);
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}
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netstats:
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/* look for the netstats file */
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if (NULL == (fp = fopen("/proc/net/dev", "r"))) {
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/* not an error if we don't find this one as it
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* isn't critical
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*/
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goto complete;
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}
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/* skip the first two lines as they are headers */
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local_getline(fp);
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local_getline(fp);
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/* read the file one line at a time */
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while (NULL != (dptr = local_getline(fp))) {
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/* the interface is at the start of the line */
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if (NULL == (ptr = strchr(dptr, ':'))) {
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continue;
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}
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*ptr = '\0';
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ptr++;
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/* parse to extract the fields */
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fields = NULL;
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local_getfields(ptr, &fields);
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if (NULL == fields) {
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continue;
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}
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/* pack the ones of interest into the struct */
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ns = OBJ_NEW(opal_netstats_t);
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ns->interface = strdup(dptr);
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ns->num_bytes_recvd = strtoul(fields[0], NULL, 10);
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ns->num_packets_recvd = strtoul(fields[1], NULL, 10);
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ns->num_recv_errs = strtoul(fields[2], NULL, 10);
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ns->num_bytes_sent = strtoul(fields[8], NULL, 10);
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ns->num_packets_sent = strtoul(fields[9], NULL, 10);
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ns->num_send_errs = strtoul(fields[10], NULL, 10);
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opal_list_append(&nstats->netstats, &ns->super);
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opal_argv_free(fields);
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}
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}
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complete:
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return OPAL_SUCCESS;
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}
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static char *local_getline(FILE *fp)
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{
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char *ret, *ptr;
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ret = fgets(input, OPAL_STAT_MAX_LENGTH, fp);
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if (NULL != ret) {
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input[strlen(input)-1] = '\0'; /* remove newline */
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/* strip leading white space */
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ptr = input;
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while (!isalnum(*ptr)) {
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ptr++;
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}
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return ptr;
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}
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return NULL;
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}
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static char *local_stripper(char *data)
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{
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char *ptr, *end, *enddata;
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int len = strlen(data);
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/* find the colon */
|
|
if (NULL == (end = strchr(data, ':'))) {
|
|
return NULL;
|
|
}
|
|
ptr = end;
|
|
--end;
|
|
/* working backwards, look for first non-whitespace */
|
|
while (end != data && !isalnum(*end)) {
|
|
--end;
|
|
}
|
|
++end;
|
|
*end = '\0';
|
|
/* now look for value */
|
|
ptr++;
|
|
enddata = &(data[len-1]);
|
|
while (ptr != enddata && !isalnum(*ptr)) {
|
|
++ptr;
|
|
}
|
|
return ptr;
|
|
}
|
|
|
|
static void local_getfields(char *dptr, char ***fields)
|
|
{
|
|
char *ptr, *end;
|
|
|
|
/* set default */
|
|
*fields = NULL;
|
|
|
|
/* find the beginning */
|
|
ptr = dptr;
|
|
while ('\0' != *ptr && !isalnum(*ptr)) {
|
|
ptr++;
|
|
}
|
|
if ('\0' == *ptr) {
|
|
return;
|
|
}
|
|
|
|
/* working from this point, find the end of each
|
|
* alpha-numeric field and store it on the stack.
|
|
* Then shift across the white space to the start
|
|
* of the next one
|
|
*/
|
|
end = ptr; /* ptr points to an alnum */
|
|
end++; /* look at next character */
|
|
while ('\0' != *end) {
|
|
/* find the end of this alpha string */
|
|
while ('\0' != *end && isalnum(*end)) {
|
|
end++;
|
|
}
|
|
/* terminate it */
|
|
*end = '\0';
|
|
/* store it on the stack */
|
|
opal_argv_append_nosize(fields, ptr);
|
|
/* step across any white space */
|
|
end++;
|
|
while ('\0' != *end && !isalnum(*end)) {
|
|
end++;
|
|
}
|
|
if ('\0' == *end) {
|
|
ptr = NULL;
|
|
break;
|
|
}
|
|
ptr = end;
|
|
end++;
|
|
}
|
|
if (NULL != ptr) {
|
|
/* have a hanging field */
|
|
opal_argv_append_nosize(fields, ptr);
|
|
}
|
|
}
|