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-rw-r--r--libc/stdlib/malloc-standard/mallinfo.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/libc/stdlib/malloc-standard/mallinfo.c b/libc/stdlib/malloc-standard/mallinfo.c
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+++ b/libc/stdlib/malloc-standard/mallinfo.c
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+/*
+ This is a version (aka dlmalloc) of malloc/free/realloc written by
+ Doug Lea and released to the public domain. Use, modify, and
+ redistribute this code without permission or acknowledgement in any
+ way you wish. Send questions, comments, complaints, performance
+ data, etc to dl@cs.oswego.edu
+
+ VERSION 2.7.2 Sat Aug 17 09:07:30 2002 Doug Lea (dl at gee)
+
+ Note: There may be an updated version of this malloc obtainable at
+ ftp://gee.cs.oswego.edu/pub/misc/malloc.c
+ Check before installing!
+
+ Hacked up for uClibc by Erik Andersen <andersen@codepoet.org>
+*/
+
+#include "malloc.h"
+
+
+/* ------------------------------ mallinfo ------------------------------ */
+struct mallinfo mallinfo(void)
+{
+ mstate av;
+ struct mallinfo mi;
+ int i;
+ mbinptr b;
+ mchunkptr p;
+ size_t avail;
+ size_t fastavail;
+ int nblocks;
+ int nfastblocks;
+
+ LOCK;
+ av = get_malloc_state();
+ /* Ensure initialization */
+ if (av->top == 0) {
+ __malloc_consolidate(av);
+ }
+
+ check_malloc_state();
+
+ /* Account for top */
+ avail = chunksize(av->top);
+ nblocks = 1; /* top always exists */
+
+ /* traverse fastbins */
+ nfastblocks = 0;
+ fastavail = 0;
+
+ for (i = 0; i < NFASTBINS; ++i) {
+ for (p = av->fastbins[i]; p != 0; p = p->fd) {
+ ++nfastblocks;
+ fastavail += chunksize(p);
+ }
+ }
+
+ avail += fastavail;
+
+ /* traverse regular bins */
+ for (i = 1; i < NBINS; ++i) {
+ b = bin_at(av, i);
+ for (p = last(b); p != b; p = p->bk) {
+ ++nblocks;
+ avail += chunksize(p);
+ }
+ }
+
+ mi.smblks = nfastblocks;
+ mi.ordblks = nblocks;
+ mi.fordblks = avail;
+ mi.uordblks = av->sbrked_mem - avail;
+ mi.arena = av->sbrked_mem;
+ mi.hblks = av->n_mmaps;
+ mi.hblkhd = av->mmapped_mem;
+ mi.fsmblks = fastavail;
+ mi.keepcost = chunksize(av->top);
+ mi.usmblks = av->max_total_mem;
+ UNLOCK;
+ return mi;
+}
+