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- /*
- * Copyright (c) 2004 Matthew Gream
- * Copyright (c) 2001-2008 Willem Dijkstra
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- */
- /*
- * Get current memory statistics in bytes; reports them back in symon_buf as
- *
- * real active : real total : free : [swap used : swap total]
- */
- #include "conf.h"
- #include <sys/param.h>
- #include <sys/sysctl.h>
- #include <sys/vmmeter.h>
- #include <vm/vm_param.h>
- #include <unistd.h>
- #include <stdlib.h>
- #include <stdio.h>
- #include <string.h>
- #include <limits.h>
- #include "error.h"
- #include "symon.h"
- #include "xmalloc.h"
- #define pagetob(size) (((u_int64_t)size) << me_pageshift)
- /* Globals for this module all start with me_ */
- static u_int64_t me_pagesize;
- static u_int64_t me_pageshift;
- static char me_physmem_mib_str[] = "hw.physmem";
- static int me_physmem_mib_nam[CTL_MAXNAME];
- static size_t me_physmem_mib_len = 0;
- static char me_vmnswp_mib_str[] = "vm.nswapdev";
- static int me_vmnswp_mib_nam[CTL_MAXNAME];
- static size_t me_vmnswp_mib_len = 0;
- static char me_vmiswp_mib_str[] = "vm.swap_info";
- static int me_vmiswp_mib_nam[CTL_MAXNAME];
- static size_t me_vmiswp_mib_len = 0;
- static int me_vm_mib[] = {CTL_VM, VM_TOTAL};
- static u_int64_t me_stats[5];
- static struct vmtotal me_vmtotal;
- static size_t me_vmsize = sizeof(struct vmtotal);
- void
- init_mem(struct stream *st)
- {
- me_pagesize = sysconf(_SC_PAGESIZE);
- me_pageshift = 0;
- while (me_pagesize > 1) {
- me_pageshift++;
- me_pagesize >>= 1;
- }
- me_physmem_mib_len = CTL_MAXNAME;
- if (sysctlnametomib(me_physmem_mib_str, me_physmem_mib_nam, &me_physmem_mib_len) < 0) {
- warning("sysctlnametomib for %.200s failed", me_physmem_mib_str);
- me_physmem_mib_len = 0;
- }
- me_vmnswp_mib_len = CTL_MAXNAME;
- if (sysctlnametomib(me_vmnswp_mib_str, me_vmnswp_mib_nam, &me_vmnswp_mib_len) < 0) {
- warning("sysctlnametomib for %.200s failed", me_vmnswp_mib_str);
- me_vmnswp_mib_len = 0;
- }
- me_vmiswp_mib_len = CTL_MAXNAME;
- if (sysctlnametomib(me_vmiswp_mib_str, me_vmiswp_mib_nam, &me_vmiswp_mib_len) < 0) {
- warning("sysctlnametomib for %.200s failed", me_vmiswp_mib_str);
- me_vmiswp_mib_len = 0;
- }
- info("started module mem(%.200s)", st->arg);
- }
- void
- gets_mem()
- {
- #ifdef HAS_XSWDEV
- int i;
- u_int vmnswp_dat;
- size_t vmnswp_siz;
- #endif
- u_long physmem_dat;
- size_t physmem_siz;
- bzero(&me_vmtotal, sizeof(me_vmtotal));
- if (sysctl(me_vm_mib, 2, &me_vmtotal, &me_vmsize, NULL, 0) < 0) {
- warning("%s:%d: sysctl failed", __FILE__, __LINE__);
- return;
- }
- physmem_siz = sizeof(u_long);
- if (sysctl(me_physmem_mib_nam, me_physmem_mib_len, &physmem_dat, (void *)&physmem_siz, NULL, 0) < 0) {
- warning("%s:%d: sysctl %.200s failed", __FILE__, __LINE__, me_physmem_mib_str);
- return;
- }
- /* convert memory stats to Kbytes */
- me_stats[0] = pagetob(me_vmtotal.t_arm);
- me_stats[1] = ((u_int64_t) physmem_dat) - pagetob(me_vmtotal.t_free);
- me_stats[2] = pagetob(me_vmtotal.t_free);
- me_stats[3] = me_stats[4] = 0;
- #ifdef HAS_XSWDEV
- vmnswp_siz = sizeof(int);
- if (sysctl(me_vmnswp_mib_nam, me_vmnswp_mib_len, &vmnswp_dat, (void *)&vmnswp_siz, NULL, 0) < 0) {
- warning("%s:%d: sysctl %.200s failed", __FILE__, __LINE__, me_vmnswp_mib_str);
- vmnswp_dat = 0;
- }
- for (i = 0; i < vmnswp_dat; i++) {
- struct xswdev vmiswp_dat;
- int vmiswp_siz = sizeof(vmiswp_dat);
- me_vmiswp_mib_nam[me_vmiswp_mib_len] = i;
- if (sysctl(me_vmiswp_mib_nam, me_vmiswp_mib_len + 1, &vmiswp_dat, (void *)&vmiswp_siz, NULL, 0) < 0)
- continue;
- me_stats[3] += pagetob(vmiswp_dat.xsw_used);
- me_stats[4] += pagetob(vmiswp_dat.xsw_nblks);
- }
- #endif
- }
- int
- get_mem(char *symon_buf, int maxlen, struct stream *st)
- {
- return snpack(symon_buf, maxlen, st->arg, MT_MEM2,
- me_stats[0], me_stats[1], me_stats[2],
- me_stats[3], me_stats[4]);
- }
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