tools/dispatch_trace.d

   1 #!/usr/sbin/dtrace -s
   2
   3 /*
   4  * Copyright (c) 2010-2013 Apple Inc. All rights reserved.
   5  *
   6  * @APPLE_APACHE_LICENSE_HEADER_START@
   7  *
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *     http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  *
  20  * @APPLE_APACHE_LICENSE_HEADER_END@
  21  */
  22
  23 /*
  24  * Usage: dispatch_trace.d -p [pid]
  25  *        traced process must have been executed with
  26  *        DYLD_LIBRARY_PATH=/usr/lib/system/introspection or with
  27  *        DYLD_IMAGE_SUFFIX=_profile or DYLD_IMAGE_SUFFIX=_debug
  28  */
  29
  30 #pragma D option quiet
  31 #pragma D option zdefs
  32 #pragma D option bufsize=16m
  33
  34 BEGIN {
  35         printf("%-8s %-3s %-8s   %-35s%-15s%-?s   %-43s%-?s   %-14s%-?s    %s\n",
  36                 "Time us", "CPU", "Thread", "Function", "Probe", "Queue", "Label",
  37                 "Item", "Kind", "Context", "Symbol");
  38 }
  39
  40 dispatch$target:libdispatch*.dylib::queue-push,
  41 dispatch$target:libdispatch*.dylib::queue-pop,
  42 dispatch$target:libdispatch*.dylib::callout-entry,
  43 dispatch$target:libdispatch*.dylib::callout-return /!start/ {
  44         start = walltimestamp;
  45 }
  46
  47 /*
  48  * Trace queue push and pop operations:
  49  *
  50  * probe queue-push/-pop(dispatch_queue_t queue, const char *label,
  51  *         dispatch_object_t item, const char *kind,
  52  *         dispatch_function_t function, void *context)
  53  */
  54 dispatch$target:libdispatch*.dylib::queue-push,
  55 dispatch$target:libdispatch*.dylib::queue-pop {
  56         printf("%-8d %-3d 0x%08p %-35s%-15s0x%0?p %-43s0x%0?p %-14s0x%0?p",
  57                 (walltimestamp-start)/1000, cpu, tid, probefunc, probename, arg0,
  58                 copyinstr(arg1, 42), arg2, copyinstr(arg3, 13), arg5);
  59         usym(arg4);
  60         printf("\n");
  61 }
  62
  63 /*
  64  * Trace callouts to client functions:
  65  *
  66  * probe callout-entry/-return(dispatch_queue_t queue, const char *label,
  67  *         dispatch_function_t function, void *context)
  68  */
  69 dispatch$target:libdispatch*.dylib::callout-entry,
  70 dispatch$target:libdispatch*.dylib::callout-return {
  71         printf("%-8d %-3d 0x%08p %-35s%-15s0x%0?p %-43s%-?s   %-14s0x%0?p",
  72                 (walltimestamp-start)/1000, cpu, tid, probefunc, probename, arg0,
  73                 copyinstr(arg1, 42), "", "", arg3);
  74         usym(arg2);
  75         printf("\n");
  76 }