| #!/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 |
| * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS 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. |
| */ |
| |
| /* |
| * 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); |
| } |
