diff options
| author | Angelos D. Keromytis <angelos@cvs.openbsd.org> | 2001-01-04 06:04:15 +0000 |
|---|---|---|
| committer | Angelos D. Keromytis <angelos@cvs.openbsd.org> | 2001-01-04 06:04:15 +0000 |
| commit | 35b8a776890e66c3b5f5affae39b577b96241812 (patch) | |
| tree | 658d347d69d87d961f00ca1ae02ad3f17edaab55 /sys/kern | |
| parent | 0deedecfd2203df63de9991bf161f7b37b7ac81d (diff) | |
sysctl_malloc()
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/kern_malloc.c | 65 |
1 files changed, 64 insertions, 1 deletions
diff --git a/sys/kern/kern_malloc.c b/sys/kern/kern_malloc.c index 0c0258354ee..73bf3d708b3 100644 --- a/sys/kern/kern_malloc.c +++ b/sys/kern/kern_malloc.c @@ -1,4 +1,4 @@ -/* $OpenBSD: kern_malloc.c,v 1.20 2000/06/06 20:18:20 art Exp $ */ +/* $OpenBSD: kern_malloc.c,v 1.21 2001/01/04 06:04:14 angelos Exp $ */ /* $NetBSD: kern_malloc.c,v 1.15.4.2 1996/06/13 17:10:56 cgd Exp $ */ /* @@ -42,6 +42,7 @@ #include <sys/kernel.h> #include <sys/malloc.h> #include <sys/systm.h> +#include <sys/sysctl.h> #include <vm/vm.h> #include <vm/vm_kern.h> @@ -57,6 +58,8 @@ struct kmembuckets bucket[MINBUCKET + 16]; struct kmemstats kmemstats[M_LAST]; struct kmemusage *kmemusage; char *kmembase, *kmemlimit; +char buckstring[16 * sizeof("123456,")]; +int buckstring_init = 0; #if defined(KMEMSTATS) || defined(DIAGNOSTIC) || defined(FFS_SOFTUPDATES) char *memname[] = INITKMEMNAMES; #endif @@ -479,3 +482,63 @@ kmeminit() #endif } +/* + * Return kernel malloc statistics information. + */ +int +sysctl_malloc(name, namelen, oldp, oldlenp, newp, newlen) + int *name; + u_int namelen; + void *oldp; + size_t *oldlenp; + void *newp; + size_t newlen; +{ + int i, siz; + + if (namelen != 3 && name[0] != KERN_MALLOC_BUCKETS) + return (ENOTDIR); /* overloaded */ + + switch (name[0]) { + case KERN_MALLOC_BUCKETS: + /* Initialize the first time */ + if (buckstring_init == 0) { + buckstring_init = 1; + bzero(buckstring, sizeof(buckstring)); + for (siz = 0, i = MINBUCKET; i < MINBUCKET + 16; i++) + siz += snprintf(buckstring + siz, + sizeof(buckstring) - siz - 1, + "%d,", (u_int)(1<<i)); + buckstring[siz - 1] = '\0'; /* Remove trailing comma */ + } + return (sysctl_rdstring(oldp, oldlenp, newp, buckstring)); + + case KERN_MALLOC_BUCKET: + switch (name[2]) { + case KERN_MALLOC_CALLS: + return (sysctl_rdquad(oldp, oldlenp, newp, + bucket[BUCKETINDX(name[1])].kb_calls)); + case KERN_MALLOC_ALLOC: + return (sysctl_rdquad(oldp, oldlenp, newp, + bucket[BUCKETINDX(name[1])].kb_total)); + case KERN_MALLOC_FREE: + return (sysctl_rdquad(oldp, oldlenp, newp, + bucket[BUCKETINDX(name[1])].kb_totalfree)); + case KERN_MALLOC_ELEMENTS: + return (sysctl_rdquad(oldp, oldlenp, newp, + bucket[BUCKETINDX(name[1])].kb_elmpercl)); + case KERN_MALLOC_HIWAT: + return (sysctl_rdquad(oldp, oldlenp, newp, + bucket[BUCKETINDX(name[1])].kb_highwat)); + case KERN_MALLOC_COULDFREE: + return (sysctl_rdquad(oldp, oldlenp, newp, + bucket[BUCKETINDX(name[1])].kb_couldfree)); + default: + return (EOPNOTSUPP); + } + + default: + return (EOPNOTSUPP); + } + /* NOTREACHED */ +} |