/**
* collectd - src/swap.c
- * Copyright (C) 2005-2007 Florian octo Forster
+ * Copyright (C) 2005-2009 Florian octo Forster
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
#if HAVE_SYS_SWAP_H
# include <sys/swap.h>
#endif
+#if HAVE_VM_ANON_H
+# include <vm/anon.h>
+#endif
#if HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#if HAVE_SYS_SYSCTL_H
# include <sys/sysctl.h>
#endif
+#if HAVE_SYS_DKSTAT_H
+# include <sys/dkstat.h>
+#endif
#if HAVE_KVM_H
# include <kvm.h>
#endif
-#if KERNEL_LINUX || HAVE_LIBKSTAT || defined(VM_SWAPUSAGE) || HAVE_LIBKVM || HAVE_LIBSTATGRAB
-# define SWAP_HAVE_READ 1
-#else
-# define SWAP_HAVE_READ 0
+#if HAVE_STATGRAB_H
+# include <statgrab.h>
#endif
#undef MAX
#define MAX(x,y) ((x) > (y) ? (x) : (y))
-#if SWAP_HAVE_READ
#if KERNEL_LINUX
/* No global variables */
/* #endif KERNEL_LINUX */
static kstat_t *ksp;
/* #endif HAVE_LIBKSTAT */
+#elif HAVE_SWAPCTL
+/* No global variables */
+/* #endif HAVE_SWAPCTL */
+
#elif defined(VM_SWAPUSAGE)
/* No global variables */
/* #endif defined(VM_SWAPUSAGE) */
-#elif HAVE_LIBKVM
+#elif HAVE_LIBKVM_GETSWAPINFO
static kvm_t *kvm_obj = NULL;
int kvm_pagesize;
-/* #endif HAVE_LIBKVM */
+/* #endif HAVE_LIBKVM_GETSWAPINFO */
#elif HAVE_LIBSTATGRAB
/* No global variables */
+/* #endif HAVE_LIBSTATGRAB */
+
+#else
+# error "No applicable input method."
#endif /* HAVE_LIBSTATGRAB */
static int swap_init (void)
ksp = NULL;
/* #endif HAVE_LIBKSTAT */
+#elif HAVE_SWAPCTL
+ /* No init stuff */
+/* #endif HAVE_SWAPCTL */
+
#elif defined(VM_SWAPUSAGE)
/* No init stuff */
/* #endif defined(VM_SWAPUSAGE) */
-#elif HAVE_LIBKVM
+#elif HAVE_LIBKVM_GETSWAPINFO
if (kvm_obj != NULL)
{
kvm_close (kvm_obj);
ERROR ("swap plugin: kvm_open failed.");
return (-1);
}
-/* #endif HAVE_LIBKVM */
+/* #endif HAVE_LIBKVM_GETSWAPINFO */
#elif HAVE_LIBSTATGRAB
/* No init stuff */
vl.values = values;
vl.values_len = 1;
- vl.time = time (NULL);
- strcpy (vl.host, hostname_g);
- strcpy (vl.plugin, "swap");
- strncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ sstrncpy (vl.plugin, "swap", sizeof (vl.plugin));
+ sstrncpy (vl.type, "swap", sizeof (vl.type));
+ sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
- plugin_dispatch_values ("swap", &vl);
+ plugin_dispatch_values (&vl);
} /* void swap_submit */
static int swap_read (void)
swap_submit ("used", swap_alloc);
swap_submit ("free", swap_avail);
- swap_submit ("reserved", swap_resv - swap_alloc);
+ swap_submit ("reserved", swap_resv);
/* #endif HAVE_LIBKSTAT */
+#elif HAVE_SWAPCTL
+ struct swapent *swap_entries;
+ int swap_num;
+ int status;
+ int i;
+
+ uint64_t used = 0;
+ uint64_t total = 0;
+
+ /*
+ * XXX: This is the syntax for the *BSD `swapctl', which has the
+ * following prototype:
+ * swapctl (int cmd, void *arg, int misc);
+ *
+ * HP-UX and Solaris (and possibly other UNIXes) provide `swapctl',
+ * too, but with the following prototype:
+ * swapctl (int cmd, void *arg);
+ *
+ * Solaris is usually handled in the KSTAT case above. For other UNIXes
+ * a separate case for the other version of `swapctl' may be necessary.
+ */
+ swap_num = swapctl (SWAP_NSWAP, NULL, 0);
+ if (swap_num < 0)
+ {
+ ERROR ("swap plugin: swapctl (SWAP_NSWAP) failed with status %i.",
+ swap_num);
+ return (-1);
+ }
+ else if (swap_num == 0)
+ return (0);
+
+ swap_entries = calloc (swap_num, sizeof (*swap_entries));
+ if (swap_entries == NULL)
+ {
+ ERROR ("swap plugin: calloc failed.");
+ return (-1);
+ }
+
+ status = swapctl (SWAP_STATS, swap_entries, swap_num);
+ if (status != swap_num)
+ {
+ ERROR ("swap plugin: swapctl (SWAP_STATS) failed with status %i.",
+ status);
+ sfree (swap_entries);
+ return (-1);
+ }
+
+#if defined(DEV_BSIZE) && (DEV_BSIZE > 0)
+# define C_SWAP_BLOCK_SIZE ((uint64_t) DEV_BSIZE)
+#else
+# define C_SWAP_BLOCK_SIZE ((uint64_t) 512)
+#endif
+
+ for (i = 0; i < swap_num; i++)
+ {
+ if ((swap_entries[i].se_flags & SWF_ENABLE) == 0)
+ continue;
+
+ used += ((uint64_t) swap_entries[i].se_inuse)
+ * C_SWAP_BLOCK_SIZE;
+ total += ((uint64_t) swap_entries[i].se_nblks)
+ * C_SWAP_BLOCK_SIZE;
+ }
+
+ if (total < used)
+ {
+ ERROR ("swap plugin: Total swap space (%"PRIu64") "
+ "is less than used swap space (%"PRIu64").",
+ total, used);
+ return (-1);
+ }
+
+ swap_submit ("used", (gauge_t) used);
+ swap_submit ("free", (gauge_t) (total - used));
+
+ sfree (swap_entries);
+/* #endif HAVE_SWAPCTL */
+
#elif defined(VM_SWAPUSAGE)
int mib[3];
size_t mib_len;
swap_submit ("free", sw_usage.xsu_avail);
/* #endif VM_SWAPUSAGE */
-#elif HAVE_LIBKVM
+#elif HAVE_LIBKVM_GETSWAPINFO
struct kvm_swap data_s;
int status;
swap_submit ("used", used);
swap_submit ("free", free);
-/* #endif HAVE_LIBKVM */
+/* #endif HAVE_LIBKVM_GETSWAPINFO */
#elif HAVE_LIBSTATGRAB
sg_swap_stats *swap;
return (0);
} /* int swap_read */
-#endif /* SWAP_HAVE_READ */
void module_register (void)
{
-#if SWAP_HAVE_READ
plugin_register_init ("swap", swap_init);
plugin_register_read ("swap", swap_read);
-#endif /* SWAP_HAVE_READ */
} /* void module_register */
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