J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | #!/usr/sbin/dtrace -Zs |
| 2 | |
| 3 | /* |
| 4 | * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * |
| 10 | * - Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * |
| 13 | * - Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * |
| 17 | * - Neither the name of Sun Microsystems nor the names of its |
| 18 | * contributors may be used to endorse or promote products derived |
| 19 | * from this software without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| 22 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 23 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 24 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| 25 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 26 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 27 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 28 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 29 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 30 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 31 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 32 | */ |
| 33 | |
| 34 | /* |
| 35 | */ |
| 36 | |
| 37 | /* |
| 38 | * Usage: |
| 39 | * 1. hotspot_jni_calls_stat.d -c "java ..." |
| 40 | * 2. hotspot_jni_calls_stat.d -p JAVA_PID |
| 41 | * |
| 42 | * This script collects statistics about how many times particular JNI |
| 43 | * method has been called. |
| 44 | * |
| 45 | */ |
| 46 | |
| 47 | |
| 48 | #pragma D option quiet |
| 49 | #pragma D option destructive |
| 50 | #pragma D option defaultargs |
| 51 | #pragma D option bufsize=16m |
| 52 | #pragma D option aggrate=100ms |
| 53 | |
| 54 | |
| 55 | :::BEGIN |
| 56 | { |
| 57 | printf("BEGIN hotspot_jni tracing\n"); |
| 58 | } |
| 59 | |
| 60 | |
| 61 | hotspot_jni$target:::*-entry |
| 62 | { |
| 63 | JNI_CALLS ++; |
| 64 | @jni_calls[probename] = count(); |
| 65 | } |
| 66 | |
| 67 | :::END |
| 68 | { |
| 69 | printa("%10@d %s\n", @jni_calls); |
| 70 | printf("\n"); |
| 71 | printf("Total number of JNI calls: %d\n", JNI_CALLS); |
| 72 | |
| 73 | printf("\nEND hotspot_jni tracing.\n"); |
| 74 | } |
| 75 | |
| 76 | syscall::rexit:entry, |
| 77 | syscall::exit:entry |
| 78 | /pid == $target/ |
| 79 | { |
| 80 | exit(0); |
| 81 | } |