OpenSolaris Launch

1 files changed, 113 insertions, 0 deletions

diff --git a/usr/src/cmd/mdb/demo/common/example1.c b/usr/src/cmd/mdb/demo/common/example1.c
new file mode 100644
index 0000000000..f46ee624fe
--- /dev/null
+++ b/usr/src/cmd/mdb/demo/common/example1.c
@@ -0,0 +1,113 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 1998-1999 by Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <sys/mdb_modapi.h>
+#include <sys/sysinfo.h>
+
+/*
+ * simple_echo dcmd - Demonstrate some simple argument processing by iterating
+ * through the argument array and printing back each argument.
+ */
+static int
+simple_echo(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
+{
+	if (flags & DCMD_ADDRSPEC)
+		mdb_printf("You specified address %p\n", addr);
+	else
+		mdb_printf("Current address is %p\n", addr);
+
+	while (argc-- != 0) {
+		if (argv->a_type == MDB_TYPE_STRING)
+			mdb_printf("%s ", argv->a_un.a_str);
+		else
+			mdb_printf("%llr ", argv->a_un.a_val);
+		argv++;
+	}
+
+	mdb_printf("\n");
+	return (DCMD_OK);
+}
+
+/*
+ * vminfo dcmd - Print out the global vminfo structure, nicely formatted.
+ * This function illustrates one of the functions for reading data from
+ * the target program (or core file): mdb_readvar().  The vminfo_t
+ * structure contains cumulative counters for various system virtual
+ * memory statistics.  Each second, these are incremented by the current
+ * values of freemem and the other corresponding statistical counters.
+ */
+/*ARGSUSED*/
+static int
+vminfo(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
+{
+	vminfo_t vm;
+
+	if ((flags & DCMD_ADDRSPEC) || argc != 0)
+		return (DCMD_USAGE);
+
+	if (mdb_readvar(&vm, "vminfo") == -1) {
+		/*
+		 * If the mdb_warn string does not end in a \n, mdb will
+		 * automatically append the reason for the failure.
+		 */
+		mdb_warn("failed to read vminfo structure");
+		return (DCMD_ERR);
+	}
+
+	mdb_printf("Cumulative memory statistics:\n");
+	mdb_printf("%8llu pages of free memory\n", vm.freemem);
+	mdb_printf("%8llu pages of reserved swap\n", vm.swap_resv);
+	mdb_printf("%8llu pages of allocated swap\n", vm.swap_alloc);
+	mdb_printf("%8llu pages of unreserved swap\n", vm.swap_avail);
+	mdb_printf("%8llu pages of unallocated swap\n", vm.swap_free);
+
+	return (DCMD_OK);
+}
+
+/*
+ * MDB module linkage information:
+ *
+ * We declare a list of structures describing our dcmds, and a function
+ * named _mdb_init to return a pointer to our module information.
+ */
+
+static const mdb_dcmd_t dcmds[] = {
+	{ "simple_echo", "[ args ... ]", "echo back arguments", simple_echo },
+	{ "vminfo", NULL, "print vm information", vminfo },
+	{ NULL }
+};
+
+static const mdb_modinfo_t modinfo = {
+	MDB_API_VERSION, dcmds, NULL
+};
+
+const mdb_modinfo_t *
+_mdb_init(void)
+{
+	return (&modinfo);
+}