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Diffstat (limited to 'Java/j_package.d')
-rwxr-xr-x | Java/j_package.d | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/Java/j_package.d b/Java/j_package.d new file mode 100755 index 000000000000..cfeaf050bd4b --- /dev/null +++ b/Java/j_package.d @@ -0,0 +1,56 @@ +#!/usr/sbin/dtrace -Zs +/* + * j_package.d - count Java class loads by package using DTrace. + * Written for the Java hotspot DTrace provider. + * + * $Id: j_package.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). + * + * USAGE: j_package.d # hit Ctrl-C to end + * + * FIELDS: + * PID Process ID + * LOADS Class loads during trace + * PACKAGE Package name from class + * + * 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*:::class-loaded +{ + this->class = (char *)copyin(arg0, arg1 + 1); + this->class[arg1] = '\0'; + + @loads[pid, dirname(stringof(this->class))] = count(); +} + +dtrace:::END +{ + printf(" %6s %8s %s\n", "PID", "LOADS", "PACKAGE"); + printa(" %6d %@8d %s\n", @loads); +} |