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/* |
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* i-scream libstatgrab |
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* http://www.i-scream.org |
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* Copyright (C) 2000-2004 i-scream |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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* 02111-1307 USA |
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* |
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* $Id: page_stats.c,v 1.20 2004/04/07 14:53:40 tdb Exp $ |
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*/ |
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|
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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|
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#include "statgrab.h" |
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#include "tools.h" |
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#include <time.h> |
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#ifdef SOLARIS |
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#include <kstat.h> |
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#include <sys/sysinfo.h> |
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#include <string.h> |
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#endif |
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#if defined(LINUX) || defined(CYGWIN) |
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#include <stdio.h> |
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#include <string.h> |
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#endif |
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#if defined(FREEBSD) || defined(DFBSD) |
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#include <sys/types.h> |
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#include <sys/sysctl.h> |
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#endif |
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#if defined(NETBSD) || defined(OPENBSD) |
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#include <sys/param.h> |
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#include <uvm/uvm.h> |
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#endif |
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|
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static sg_page_stats page_stats; |
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static int page_stats_uninit=1; |
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|
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sg_page_stats *sg_get_page_stats(){ |
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#ifdef SOLARIS |
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kstat_ctl_t *kc; |
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kstat_t *ksp; |
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cpu_stat_t cs; |
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#endif |
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#if defined(LINUX) || defined(CYGWIN) |
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FILE *f; |
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char *line_ptr; |
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#endif |
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#if defined(FREEBSD) || defined(DFBSD) |
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size_t size; |
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#endif |
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#if defined(NETBSD) || defined(OPENBSD) |
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struct uvmexp *uvm; |
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#endif |
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|
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page_stats.systime = time(NULL); |
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page_stats.pages_pagein=0; |
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page_stats.pages_pageout=0; |
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|
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#ifdef SOLARIS |
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if ((kc = kstat_open()) == NULL) { |
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sg_set_error(SG_ERROR_KSTAT_OPEN, NULL); |
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return NULL; |
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} |
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for (ksp = kc->kc_chain; ksp!=NULL; ksp = ksp->ks_next) { |
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if ((strcmp(ksp->ks_module, "cpu_stat")) != 0) continue; |
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if (kstat_read(kc, ksp, &cs) == -1) { |
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continue; |
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} |
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|
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page_stats.pages_pagein+=(long long)cs.cpu_vminfo.pgpgin; |
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page_stats.pages_pageout+=(long long)cs.cpu_vminfo.pgpgout; |
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} |
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|
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kstat_close(kc); |
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#endif |
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#if defined(LINUX) || defined(CYGWIN) |
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if ((f = fopen("/proc/vmstat", "r")) != NULL) { |
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while ((line_ptr = sg_f_read_line(f, "")) != NULL) { |
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long long value; |
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|
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if (sscanf(line_ptr, "%*s %lld", &value) != 1) { |
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continue; |
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} |
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|
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if (strncmp(line_ptr, "pgpgin ", 7) == 0) { |
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page_stats.pages_pagein = value; |
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} else if (strncmp(line_ptr, "pgpgout ", 8) == 0) { |
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page_stats.pages_pageout = value; |
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} |
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} |
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|
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fclose(f); |
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} else if ((f = fopen("/proc/stat", "r")) != NULL) { |
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if ((line_ptr = sg_f_read_line(f, "page")) == NULL) { |
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sg_set_error(SG_ERROR_PARSE, "page"); |
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fclose(f); |
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return NULL; |
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} |
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|
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if (sscanf(line_ptr, "page %lld %lld", &page_stats.pages_pagein, &page_stats.pages_pageout) != 2) { |
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sg_set_error(SG_ERROR_PARSE, "page"); |
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fclose(f); |
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return NULL; |
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} |
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|
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fclose(f); |
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} else { |
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sg_set_error(SG_ERROR_OPEN, "/proc/stat"); |
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return NULL; |
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} |
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#endif |
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#if defined(FREEBSD) || defined(DFBSD) |
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size = sizeof page_stats.pages_pagein; |
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if (sysctlbyname("vm.stats.vm.v_swappgsin", &page_stats.pages_pagein, &size, NULL, 0) < 0){ |
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sg_set_error(SG_ERROR_SYSCTLBYNAME, "vm.stats.vm.v_swappgsin"); |
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return NULL; |
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} |
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size = sizeof page_stats.pages_pageout; |
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if (sysctlbyname("vm.stats.vm.v_swappgsout", &page_stats.pages_pageout, &size, NULL, 0) < 0){ |
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sg_set_error(SG_ERROR_SYSCTLBYNAME, "vm.stats.vm.v_swappgsout"); |
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return NULL; |
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} |
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#endif |
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#if defined(NETBSD) || defined(OPENBSD) |
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if ((uvm = sg_get_uvmexp()) == NULL) { |
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return NULL; |
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} |
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|
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page_stats.pages_pagein = uvm->pgswapin; |
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page_stats.pages_pageout = uvm->pgswapout; |
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#endif |
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|
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return &page_stats; |
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} |
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|
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sg_page_stats *sg_get_page_stats_diff(){ |
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sg_page_stats *page_ptr; |
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static sg_page_stats page_stats_diff; |
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|
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if(page_stats_uninit){ |
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page_ptr=sg_get_page_stats(); |
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if(page_ptr==NULL){ |
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return NULL; |
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} |
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page_stats_uninit=0; |
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return page_ptr; |
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} |
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|
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page_stats_diff.pages_pagein=page_stats.pages_pagein; |
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page_stats_diff.pages_pageout=page_stats.pages_pageout; |
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page_stats_diff.systime=page_stats.systime; |
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|
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page_ptr=sg_get_page_stats(); |
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if(page_ptr==NULL){ |
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return NULL; |
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} |
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|
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page_stats_diff.pages_pagein=page_stats.pages_pagein-page_stats_diff.pages_pagein; |
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page_stats_diff.pages_pageout=page_stats.pages_pageout-page_stats_diff.pages_pageout; |
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page_stats_diff.systime=page_stats.systime-page_stats_diff.systime; |
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|
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return &page_stats_diff; |
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} |
