| #!/usr/sbin/dtrace -Zs |
| /* |
| * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * - Neither the name of Oracle nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /* |
| */ |
| |
| /* |
| * Usage: |
| * 1. method_invocation_tree.d -c "java ..." |
| * 2. method_invocation_tree.d -p JAVA_PID |
| * |
| * This script prints tree of Java and JNI method invocations. |
| * |
| * Notes: |
| * - These probes are disabled by default since it incurs performance |
| * overhead to the application. To trace the method-entry and |
| * method-exit probes, you need to turn on the ExtendedDTraceProbes VM |
| * option. |
| * You can either start the application with -XX:+ExtendedDTraceProbes |
| * option or use the jinfo command to enable it at runtime as follows: |
| * |
| * jinfo -flag +ExtendedDTraceProbes <java_pid> |
| * |
| */ |
| |
| #pragma D option quiet |
| #pragma D option destructive |
| #pragma D option defaultargs |
| #pragma D option bufsize=16m |
| #pragma D option aggrate=100ms |
| |
| self char *str_ptr; |
| self string class_name; |
| self string method_name; |
| self string signature; |
| |
| self int indent; |
| |
| BEGIN |
| { |
| SAMPLE_NAME = "hotspot method invocation tracing"; |
| |
| printf("BEGIN %s\n\n", SAMPLE_NAME); |
| } |
| |
| hotspot$target:::* |
| /!self->indent/ |
| { |
| self->indent = 0; |
| } |
| |
| /* |
| * hotspot:::method-entry, hotspot:::method-return probe arguments: |
| * arg0: uintptr_t, Java thread id |
| * arg1: char*, a pointer to mUTF-8 string containing the name of |
| * the class of the method being entered |
| * arg2: uintptr_t, the length of the class name (in bytes) |
| * arg3: char*, a pointer to mUTF-8 string data which contains the |
| * name of the method being entered |
| * arg4: uintptr_t, the length of the method name (in bytes) |
| * arg5: char*, a pointer to mUTF-8 string data which contains the |
| * signature of the method being entered |
| * arg6: uintptr_t, the length of the signature(in bytes) |
| */ |
| |
| hotspot$target:::method-return |
| { |
| self->indent --; |
| METHOD_RETURN_CNT ++ |
| } |
| |
| hotspot$target:::method-entry |
| { |
| self->indent ++; |
| METHOD_ENTRY_CNT ++; |
| |
| self->str_ptr = (char*) copyin(arg1, arg2+1); |
| self->str_ptr[arg2] = '\0'; |
| self->class_name = (string) self->str_ptr; |
| |
| self->str_ptr = (char*) copyin(arg3, arg4+1); |
| self->str_ptr[arg4] = '\0'; |
| self->method_name = (string) self->str_ptr; |
| |
| self->str_ptr = (char*) copyin(arg5, arg6+1); |
| self->str_ptr[arg6] = '\0'; |
| self->signature = (string) self->str_ptr; |
| |
| printf("%-10u%*s%s:%s:%s\n", |
| tid, self->indent, "", self->class_name, |
| self->method_name, self->signature); |
| |
| } |
| |
| hotspot_jni$target:::*_entry |
| { |
| printf("%-10u%*sJNI:%s\n", tid, self->indent+1, "", probename); |
| } |
| |
| :::END |
| { |
| printf("METHOD_ENTRY_CNT: %10d\n", METHOD_ENTRY_CNT); |
| printf("METHOD_RETURN_CNT: %10d\n", METHOD_RETURN_CNT); |
| |
| printf("\nEND of %s\n", SAMPLE_NAME); |
| } |
| |
| syscall::rexit:entry, |
| syscall::exit:entry |
| /pid == $target/ |
| { |
| exit(0); |
| } |