#!/usr/sbin/dtrace -Zs

/*
* %W% %E%
*
* 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:
*
* -Redistribution of source code must retain the above copyright notice, this
*  list of conditions and the following disclaimer.
*
* -Redistribution 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 or the names of contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
* ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
* OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN")
* AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
* AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
* DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
* REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
* INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY
* OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
* EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed, licensed or intended
* for use in the design, construction, operation or maintenance of any
* nuclear facility.
*/

/*
 * Usage:
 *   1. hotspot_calls_tree.d -c "java ..."
 *   2. hotspot_calls_tree.d -p JAVA_PID
 *
 * This script prints calls tree of fired 'hotspot' probes.
 *
 * Notes: 
 *    The script uses 'monitors' probes which are disabled by default since
 *    it incurs performance overhead to the application. To enable them, 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 aggrate=100ms

self int indent;
string PAUSE_AT_STARTUP_FILE;

:::BEGIN
{
    SAMPLE_NAME = "hotspot probes tracing";

    printf("BEGIN %s\n\n", SAMPLE_NAME);

    self->indent = 10;
}

hotspot$target:::class-loaded,
hotspot$target:::class-unloaded,
hotspot$target:::compiled-method-load,
hotspot$target:::compiled-method-unload,
hotspot$target:::monitor-notify,
hotspot$target:::monitor-notifyAll
{
    printf("%d %*s <-> %s\n", curcpu->cpu_id, self->indent, "", probename);
}

hotspot$target:::vm-init-begin,
hotspot$target:::gc-begin,
hotspot$target:::mem-pool-gc-begin,
hotspot$target:::thread-start,
hotspot$target:::method-compile-begin,
hotspot$target:::monitor-contended-enter,
hotspot$target:::monitor-wait
{
    self->indent ++;
    printf("%d %*s -> %s\n", curcpu->cpu_id, self->indent, "", probename);
}

hotspot$target:::vm-init-end,
hotspot$target:::vm-shutdown,
hotspot$target:::gc-end,
hotspot$target:::mem-pool-gc-end,
hotspot$target:::thread-stop,
hotspot$target:::method-compile-end,
hotspot$target:::monitor-contended-entered,
hotspot$target:::monitor-contended-exit,
hotspot$target:::monitor-waited
{
    printf("%d %*s <- %s\n", curcpu->cpu_id, self->indent, "", probename);
    self->indent --;
}

:::END
{
    printf("\nEND of %s\n", SAMPLE_NAME);
}

syscall::rexit:entry,
syscall::exit:entry
/pid == $target/
{
    exit(0);
}
