trace/default.c

   1 /*
   2  * Default implementation for backend initialization from commandline.
   3  *
   4  * Copyright (C) 2011-2012 Lluís Vilanova <vilanova@ac.upc.edu>
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2.  See
   7  * the COPYING file in the top-level directory.
   8  */
   9
  10 #include "trace/control.h"
  11
  12
  13 void trace_print_events(FILE *stream, fprintf_function stream_printf)
  14 {
  15     fprintf(stderr, "warning: "
  16             "cannot print the trace events with the current backend\n");
  17     stream_printf(stream, "error: "
  18                   "operation not supported with the current backend\n");
  19 }
  20
  21 void trace_event_set_state_dynamic_backend(TraceEvent *ev, bool state)
  22 {
  23     fprintf(stderr, "warning: "
  24             "cannot set the state of a trace event with the current backend\n");
  25 }
  26
  27 bool trace_backend_init(const char *events, const char *file)
  28 {
  29     if (events) {
  30         fprintf(stderr, "error: -trace events=...: "
  31                 "option not supported by the selected tracing backend\n");
  32         return false;
  33     }
  34     if (file) {
  35         fprintf(stderr, "error: -trace file=...: "
  36                 "option not supported by the selected tracing backend\n");
  37         return false;
  38     }
  39     return true;
  40 }