1 files changed, 55 insertions, 0 deletions
diff --git a/src/pmdas/darwin/disk.h b/src/pmdas/darwin/disk.h
new file mode 100644
index 0000000..c3579ff
--- /dev/null
+++ b/src/pmdas/darwin/disk.h
@@ -0,0 +1,55 @@
+/*
+ * Disk statistics types
+ * Copyright (c) 2004 Silicon Graphics, Inc.  All Rights Reserved.
+ * 
+ * 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 of the License, 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#define DEVNAMEMAX	255	/* largest device name we allow */
+
+/*
+ * Per-device statistics
+ */
+typedef struct diskstat {
+    __uint64_t	read;
+    __uint64_t	write;
+    __uint64_t	read_bytes;
+    __uint64_t	write_bytes;
+    __uint64_t	read_time;
+    __uint64_t	write_time;
+    __uint64_t	blocksize;
+    char	name[DEVNAMEMAX + 1];
+} diskstat_t;
+
+/*
+ * Global statistics.
+ * 
+ * We avoid continually realloc'ing memory by keeping track
+ * of the maximum number of devices we've allocated space for
+ * so far, and only realloc new space if we go beyond that.
+ */
+typedef struct diskstats {
+    __uint64_t	read;
+    __uint64_t	write;
+    __uint64_t	read_bytes;
+    __uint64_t	write_bytes;
+    __uint64_t	blkread;
+    __uint64_t	blkwrite;
+    __uint64_t	read_time;
+    __uint64_t	write_time;
+    int		highwater;	/* largest number of devices seen so far */
+    diskstat_t	*disks;		/* space for highwater number of devices */
+} diskstats_t;
+