J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | #!/usr/sbin/dtrace -Zs |
| 2 | /* |
| 3 | * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * |
| 12 | * - Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * - Neither the name of Sun Microsystems nor the names of its |
| 17 | * contributors may be used to endorse or promote products derived |
| 18 | * from this software without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| 21 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 22 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 23 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| 24 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 26 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 27 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 28 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 29 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 30 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | /* |
| 34 | */ |
| 35 | |
| 36 | /* |
| 37 | * Usage: |
| 38 | * 1. method_invocation_tree.d -c "java ..." |
| 39 | * 2. method_invocation_tree.d -p JAVA_PID |
| 40 | * |
| 41 | * This script prints tree of Java and JNI method invocations. |
| 42 | * |
| 43 | * Notes: |
| 44 | * - These probes are disabled by default since it incurs performance |
| 45 | * overhead to the application. To trace the method-entry and |
| 46 | * method-exit probes, you need to turn on the ExtendedDTraceProbes VM |
| 47 | * option. |
| 48 | * You can either start the application with -XX:+ExtendedDTraceProbes |
| 49 | * option or use the jinfo command to enable it at runtime as follows: |
| 50 | * |
| 51 | * jinfo -flag +ExtendedDTraceProbes <java_pid> |
| 52 | * |
| 53 | */ |
| 54 | |
| 55 | #pragma D option quiet |
| 56 | #pragma D option destructive |
| 57 | #pragma D option defaultargs |
| 58 | #pragma D option bufsize=16m |
| 59 | #pragma D option aggrate=100ms |
| 60 | |
| 61 | self char *str_ptr; |
| 62 | self string class_name; |
| 63 | self string method_name; |
| 64 | self string signature; |
| 65 | |
| 66 | self int indent; |
| 67 | |
| 68 | BEGIN |
| 69 | { |
| 70 | SAMPLE_NAME = "hotspot method invocation tracing"; |
| 71 | |
| 72 | printf("BEGIN %s\n\n", SAMPLE_NAME); |
| 73 | } |
| 74 | |
| 75 | hotspot$target:::* |
| 76 | /!self->indent/ |
| 77 | { |
| 78 | self->indent = 0; |
| 79 | } |
| 80 | |
| 81 | /* |
| 82 | * hotspot:::method-entry, hotspot:::method-return probe arguments: |
| 83 | * arg0: uintptr_t, Java thread id |
| 84 | * arg1: char*, a pointer to mUTF-8 string containing the name of |
| 85 | * the class of the method being entered |
| 86 | * arg2: uintptr_t, the length of the class name (in bytes) |
| 87 | * arg3: char*, a pointer to mUTF-8 string data which contains the |
| 88 | * name of the method being entered |
| 89 | * arg4: uintptr_t, the length of the method name (in bytes) |
| 90 | * arg5: char*, a pointer to mUTF-8 string data which contains the |
| 91 | * signature of the method being entered |
| 92 | * arg6: uintptr_t, the length of the signature(in bytes) |
| 93 | */ |
| 94 | |
| 95 | hotspot$target:::method-return |
| 96 | { |
| 97 | self->indent --; |
| 98 | METHOD_RETURN_CNT ++ |
| 99 | } |
| 100 | |
| 101 | hotspot$target:::method-entry |
| 102 | { |
| 103 | self->indent ++; |
| 104 | METHOD_ENTRY_CNT ++; |
| 105 | |
| 106 | self->str_ptr = (char*) copyin(arg1, arg2+1); |
| 107 | self->str_ptr[arg2] = '\0'; |
| 108 | self->class_name = (string) self->str_ptr; |
| 109 | |
| 110 | self->str_ptr = (char*) copyin(arg3, arg4+1); |
| 111 | self->str_ptr[arg4] = '\0'; |
| 112 | self->method_name = (string) self->str_ptr; |
| 113 | |
| 114 | self->str_ptr = (char*) copyin(arg5, arg6+1); |
| 115 | self->str_ptr[arg6] = '\0'; |
| 116 | self->signature = (string) self->str_ptr; |
| 117 | |
| 118 | printf("%-10u%*s%s:%s:%s\n", |
| 119 | tid, self->indent, "", self->class_name, |
| 120 | self->method_name, self->signature); |
| 121 | |
| 122 | } |
| 123 | |
| 124 | hotspot_jni$target:::*_entry |
| 125 | { |
| 126 | printf("%-10u%*sJNI:%s\n", tid, self->indent+1, "", probename); |
| 127 | } |
| 128 | |
| 129 | :::END |
| 130 | { |
| 131 | printf("METHOD_ENTRY_CNT: %10d\n", METHOD_ENTRY_CNT); |
| 132 | printf("METHOD_RETURN_CNT: %10d\n", METHOD_RETURN_CNT); |
| 133 | |
| 134 | printf("\nEND of %s\n", SAMPLE_NAME); |
| 135 | } |
| 136 | |
| 137 | syscall::rexit:entry, |
| 138 | syscall::exit:entry |
| 139 | /pid == $target/ |
| 140 | { |
| 141 | exit(0); |
| 142 | } |