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(SIGAR-215) use swapctl SC_LIST for Solaris swap_get impl

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This commit is contained in:
Doug MacEachern 2010-04-27 16:09:26 -07:00
parent 30e8d0e2c1
commit b40013def1
1 changed files with 28 additions and 12 deletions
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40
src/os/solaris/solaris_sigar.c
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@ -247,25 +247,41 @@ int sigar_swap_get(sigar_t *sigar, sigar_swap_t *swap)
{
kstat_t *ksp;
kstat_named_t *kn;
struct anoninfo anon;
swaptbl_t *stab;
int num, i;
char path[PATH_MAX+1]; /* {un,re}used */
/* XXX vm/anon.h says:
* "The swap data can be aquired more efficiently through the
* kstats interface."
* but cannot find anything that explains howto convert those numbers.
*/
if (swapctl(SC_AINFO, &anon) == -1) {
/* see: man swapctl(2) */
if ((num = swapctl(SC_GETNSWP, NULL)) == -1) {
return errno;
}
swap->total = anon.ani_max;
swap->used = anon.ani_resv;
swap->free = anon.ani_max - anon.ani_resv;
stab = malloc(num * sizeof(stab->swt_ent[0]) + sizeof(*stab));
stab->swt_n = num;
for (i=0; i<num; i++) {
stab->swt_ent[i].ste_path = path;
}
if ((num = swapctl(SC_LIST, stab)) == -1) {
free(stab);
return errno;
}
num = num < stab->swt_n ? num : stab->swt_n;
swap->total = swap->free = 0;
for (i=0; i<num; i++) {
if (stab->swt_ent[i].ste_flags & ST_INDEL) {
continue; /* swap file is being deleted */
}
swap->total += stab->swt_ent[i].ste_pages;
swap->free += stab->swt_ent[i].ste_free;
}
free(stab);
swap->total <<= sigar->pagesize;
swap->free <<= sigar->pagesize;
swap->used <<= sigar->pagesize;
swap->used = swap->total - swap->free;
if (sigar_kstat_update(sigar) == -1) {
return errno;