#!/usr/sbin/dtrace -qs

/*
 * Copyright (C) 2014 University of Washington. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  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.
 * 3.  Neither the name of Apple Inc. ("Apple") 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 APPLE AND ITS 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
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 */

/*
 * DTrace example: tracing function calls when the profiler is enabled.
 * To use this, first enable the JavaScript tracing profiler using the Web Inspector.
 *
 * These run for any process; restrict to a pid by changing the provider to JavaScriptCore$target
 * and passing the arguments '-p <pid>' to the script.
 */

JavaScriptCore*:::profile-will_execute
{
    printf("[%d] -> %s (%s:%d:%d)\n",arg0, copyinstr(arg1), copyinstr(arg2), arg3, arg4);
}

JavaScriptCore*:::profile-did_execute
{
    printf("[%d] <- %s (%s:%d:%d)\n",arg0, copyinstr(arg1), copyinstr(arg2), arg3, arg4);
}