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authorGeorge V. Neville-Neil <gnn@FreeBSD.org>2012-05-12 21:25:48 +0000
committerGeorge V. Neville-Neil <gnn@FreeBSD.org>2012-05-12 21:25:48 +0000
commitf2f9999d8b198d4aeef3bada3ccee3b1e4a2a38a (patch)
tree349c87edcb2d1f2a1040b9630b1fddf85a3484a0 /cddl/contrib/dtracetoolkit/Java/j_events.d
parent6130ff50fb1a60f79a45bda8862a80e0e1643abe (diff)
parent055173dba4a263acf10325a49eebf82915369ed2 (diff)
downloadsrc-test2-f2f9999d8b198d4aeef3bada3ccee3b1e4a2a38a.tar.gz
src-test2-f2f9999d8b198d4aeef3bada3ccee3b1e4a2a38a.zip
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+#!/usr/sbin/dtrace -Zs
+/*
+ * j_events.d - count Java events using DTrace.
+ * Written for the Java hotspot DTrace provider.
+ *
+ * $Id: j_events.d 19 2007-09-12 07:47:59Z brendan $
+ *
+ * This traces activity from all Java processes on the system with hotspot
+ * provider support (1.6.0). Some events such as method calls are only
+ * visible when using the flag "+ExtendedDTraceProbes". eg,
+ * java -XX:+ExtendedDTraceProbes classfile
+ *
+ * USAGE: j_events.d # hit Ctrl-C to end
+ *
+ * FIELDS:
+ * PID Process ID
+ * EVENT Event name (DTrace probe name)
+ * COUNT Number of calls during sample
+ *
+ * COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
+ *
+ * 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 Docs/cddl1.txt
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * CDDL HEADER END
+ *
+ * 09-Sep-2007 Brendan Gregg Created this.
+ */
+
+#pragma D option quiet
+
+dtrace:::BEGIN
+{
+ printf("Tracing... Hit Ctrl-C to end.\n");
+}
+
+/* this matches both hotspot and hotspot_jni providers */
+hotspot*:::
+{
+ @calls[pid, probename] = count();
+}
+
+dtrace:::END
+{
+ printf(" %6s %-36s %8s\n", "PID", "EVENT", "COUNT");
+ printa(" %6d %-36s %@8d\n", @calls);
+}