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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: swap_stats.c,v 1.21 2004/07/18 21:30:11 ats 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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#ifdef SOLARIS |
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#include <sys/stat.h> |
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#include <sys/swap.h> |
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#include <unistd.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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#ifdef FREEBSD5 |
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#include <sys/param.h> |
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#include <sys/sysctl.h> |
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#include <sys/user.h> |
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#else |
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#include <sys/types.h> |
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#include <kvm.h> |
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#endif |
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#include <unistd.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 <sys/time.h> |
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#include <uvm/uvm.h> |
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#include <unistd.h> |
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#endif |
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#ifdef HPUX |
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#include <sys/param.h> |
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#include <sys/pstat.h> |
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#include <unistd.h> |
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#endif |
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|
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sg_swap_stats *sg_get_swap_stats(){ |
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|
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static sg_swap_stats swap_stat; |
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|
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#ifdef HPUX |
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struct pst_swapinfo pstat_swapinfo; |
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int swapidx = 0; |
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#endif |
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#ifdef SOLARIS |
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struct anoninfo ai; |
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int pagesize; |
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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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unsigned long long value; |
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#endif |
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#if defined(FREEBSD) || defined(DFBSD) |
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int pagesize; |
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#ifdef FREEBSD5 |
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struct xswdev xsw; |
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int mib[16], n; |
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size_t mibsize, size; |
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#else |
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struct kvm_swap swapinfo; |
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kvm_t *kvmd; |
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#endif |
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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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#ifdef HPUX |
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swap_stat.total = 0; |
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swap_stat.used = 0; |
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swap_stat.free = 0; |
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|
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/* The 128 here is arbitrary, it can be increased at the expense |
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of more system calls to pstat(). */ |
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for (swapidx = 0; swapidx < 128; swapidx++) { |
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if (pstat_getswap(&pstat_swapinfo, sizeof(pstat_swapinfo), 1, swapidx) == -1) { |
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break; |
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} |
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|
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if (pstat_swapinfo.pss_idx != swapidx) { |
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continue; |
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} |
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|
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if ((pstat_swapinfo.pss_flags & SW_ENABLED) != SW_ENABLED) { |
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continue; |
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} |
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|
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if ((pstat_swapinfo.pss_flags & SW_BLOCK) == SW_BLOCK) { |
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swap_stat.total += ((long long) pstat_swapinfo.pss_nblksavail) * 1024LL; |
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swap_stat.used += ((long long) pstat_swapinfo.pss_nfpgs) * 1024LL; |
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swap_stat.free = swap_stat.total - swap_stat.used; |
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} |
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if ((pstat_swapinfo.pss_flags & SW_FS) == SW_FS) { |
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swap_stat.total += ((long long) pstat_swapinfo.pss_limit) * 1024LL; |
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swap_stat.used += ((long long) pstat_swapinfo.pss_allocated) * 1024LL; |
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swap_stat.free = swap_stat.total - swap_stat.used; |
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} |
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} |
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#endif |
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#ifdef SOLARIS |
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if((pagesize=sysconf(_SC_PAGESIZE)) == -1){ |
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sg_set_error_with_errno(SG_ERROR_SYSCONF, "_SC_PAGESIZE"); |
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return NULL; |
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} |
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if (swapctl(SC_AINFO, &ai) == -1) { |
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sg_set_error_with_errno(SG_ERROR_SWAPCTL, NULL); |
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return NULL; |
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} |
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swap_stat.total = (long long)ai.ani_max * (long long)pagesize; |
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swap_stat.used = (long long)ai.ani_resv * (long long)pagesize; |
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swap_stat.free = swap_stat.total - swap_stat.used; |
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#endif |
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#if defined(LINUX) || defined(CYGWIN) |
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if ((f = fopen("/proc/meminfo", "r")) == NULL) { |
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sg_set_error_with_errno(SG_ERROR_OPEN, "/proc/meminfo"); |
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return NULL; |
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} |
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|
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while ((line_ptr = sg_f_read_line(f, "")) != NULL) { |
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if (sscanf(line_ptr, "%*s %llu kB", &value) != 1) { |
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continue; |
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} |
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value *= 1024; |
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|
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if (strncmp(line_ptr, "SwapTotal:", 10) == 0) { |
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swap_stat.total = value; |
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} else if (strncmp(line_ptr, "SwapFree:", 9) == 0) { |
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swap_stat.free = value; |
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} |
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} |
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|
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fclose(f); |
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swap_stat.used = swap_stat.total - swap_stat.free; |
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#endif |
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#if defined(FREEBSD) || defined(DFBSD) |
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pagesize=getpagesize(); |
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|
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#ifdef FREEBSD5 |
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swap_stat.total = 0; |
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swap_stat.used = 0; |
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|
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mibsize = sizeof mib / sizeof mib[0]; |
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if (sysctlnametomib("vm.swap_info", mib, &mibsize) < 0) { |
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sg_set_error_with_errno(SG_ERROR_SYSCTLNAMETOMIB, |
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"vm.swap_info"); |
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return NULL; |
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} |
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for (n = 0; ; ++n) { |
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mib[mibsize] = n; |
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size = sizeof xsw; |
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if (sysctl(mib, mibsize + 1, &xsw, &size, NULL, NULL) < 0) { |
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break; |
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} |
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if (xsw.xsw_version != XSWDEV_VERSION) { |
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sg_set_error(SG_ERROR_XSW_VER_MISMATCH, NULL); |
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return NULL; |
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} |
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swap_stat.total += (long long) xsw.xsw_nblks; |
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swap_stat.used += (long long) xsw.xsw_used; |
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} |
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if (errno != ENOENT) { |
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sg_set_error_with_errno(SG_ERROR_SYSCTL, "vm.swap_info"); |
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return NULL; |
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} |
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#else |
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if((kvmd = sg_get_kvm()) == NULL){ |
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return NULL; |
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} |
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if ((kvm_getswapinfo(kvmd, &swapinfo, 1,0)) == -1){ |
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sg_set_error(SG_ERROR_KVM_GETSWAPINFO, NULL); |
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return NULL; |
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} |
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|
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swap_stat.total = (long long)swapinfo.ksw_total; |
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swap_stat.used = (long long)swapinfo.ksw_used; |
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#endif |
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swap_stat.total *= pagesize; |
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swap_stat.used *= pagesize; |
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swap_stat.free = swap_stat.total - swap_stat.used; |
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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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swap_stat.total = (long long)uvm->pagesize * (long long)uvm->swpages; |
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swap_stat.used = (long long)uvm->pagesize * (long long)uvm->swpginuse; |
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swap_stat.free = swap_stat.total - swap_stat.used; |
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#endif |
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|
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return &swap_stat; |
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|
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} |
