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Diffstat (limited to 'cddl/contrib/dtracetoolkit/Java/j_objnew.d')
-rwxr-xr-x | cddl/contrib/dtracetoolkit/Java/j_objnew.d | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/cddl/contrib/dtracetoolkit/Java/j_objnew.d b/cddl/contrib/dtracetoolkit/Java/j_objnew.d new file mode 100755 index 0000000..8847005 --- /dev/null +++ b/cddl/contrib/dtracetoolkit/Java/j_objnew.d @@ -0,0 +1,61 @@ +#!/usr/sbin/dtrace -Zs +/* + * j_objnew.d - report Java object allocation using DTrace. + * Written for the Java hotspot DTrace provider. + * + * $Id: j_objnew.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) and the flag "+ExtendedDTraceProbes". eg, + * java -XX:+ExtendedDTraceProbes classfile + * + * USAGE: j_objnew.d # hit Ctrl-C to end + * + * FIELDS: + * PID Process ID + * OBJS Number of objects created + * CLASS.METHOD Java class and method name + * + * 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"); +} + +hotspot*:::object-alloc +{ + this->class = (char *)copyin(arg1, arg2 + 1); + this->class[arg2] = '\0'; + @objs[pid, stringof(this->class)] = count(); + @dist[pid, stringof(this->class)] = quantize(arg3); +} + +dtrace:::END +{ + printf("Java object allocation byte distributions by pid and class,\n"); + printa(@dist); + + printf("Java object allocation count by pid and class,\n\n"); + printf(" %6s %8s %s\n", "PID", "OBJS", "CLASS"); + printa(" %6d %8@d %s\n", @objs); +} |