Imported from ../bash-2.05a.tar.gz.

lib/malloc/mstats.h

@@ -0,0 +1,90 @@
+/* mstats.h - definitions for malloc statistics */
+
+/*  Copyright (C) 2001 Free Software Foundation, Inc.
+
+    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 Free Software Foundation; either version 2, or (at your option)
+    any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+
+#ifndef _MSTATS_H
+#define _MSTATS_H
+
+#include "imalloc.h"
+
+#ifdef MALLOC_STATS
+
+#ifndef NBUCKETS
+#  define NBUCKETS 30
+#endif
+
+/*
+ * NMALLOC[i] is the difference between the number of mallocs and frees
+ * for a given block size.  TMALLOC[i] is the total number of mallocs for
+ * a given block size.  NMORECORE[i] is the total number of calls to
+ * morecore(i).  NMAL and NFRE are counts of the number of calls to malloc()
+ * and free(), respectively.  NREALLOC is the total number of calls to
+ * realloc(); NRCOPY is the number of times realloc() had to allocate new
+ * memory and copy to it.  NRECURSE is a count of the number of recursive
+ * calls to malloc() for the same bucket size, which can be caused by calls
+ * to malloc() from a signal handler.  NSBRK is the number of calls to sbrk()
+ * (whether by morecore() or for alignment); TSBRK is the total number of
+ * bytes requested from the kernel with sbrk().  BYTESUSED is the total
+ * number of bytes consumed by blocks currently in use; BYTESFREE is the
+ * total number of bytes currently on all of the free lists.  TBSPLIT is
+ * the number of times a larger block was split to satisfy a smaller request.
+ * NSPLIT[i] is the number of times a block of size I was split.
+ * TBCOALESCE is the number of times two adjacent smaller blocks off the free
+ * list were combined to satisfy a larger request.
+ */
+struct _malstats {
+  int nmalloc[NBUCKETS];
+  int tmalloc[NBUCKETS];
+  int nmorecore[NBUCKETS];
+  int nmal;
+  int nfre;
+  int nrealloc;
+  int nrcopy;
+  int nrecurse;
+  int nsbrk;
+  bits32_t tsbrk;
+  bits32_t bytesused;
+  bits32_t bytesfree;
+  int tbsplit;
+  int nsplit[NBUCKETS];
+  int tbcoalesce;
+};
+
+/* Return statistics describing allocation of blocks of size BLOCKSIZE.
+   NFREE is the number of free blocks for this allocation size.  NUSED
+   is the number of blocks in use.  NMAL is the number of requests for
+   blocks of size BLOCKSIZE.  NMORECORE is the number of times we had
+   to call MORECORE to repopulate the free list for this bucket.  NSPLIT
+   is the number of times a block of this size was split to satisfy a
+   smaller request. */
+struct bucket_stats {
+  u_bits32_t blocksize;
+  int nfree;
+  int nused;
+  int nmal;
+  int nmorecore;
+  int nsplit;
+};
+
+extern struct bucket_stats malloc_bucket_stats ();
+extern struct _malstats malloc_stats ();
+extern void print_malloc_stats ();
+extern void trace_malloc_stats ();
+
+#endif /* MALLOC_STATS */
+
+#endif /* _MSTATS_H */