trace/default.c

   1 /*
   2  * Default implementation for backend initialization from commandline.
   3  *
   4  * Copyright (C) 2011 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 bool trace_event_set_state(const char *name, bool state)
  22 {
  23     fprintf(stderr, "warning: "
  24             "cannot set the state of a trace event with the current backend\n");
  25     return false;
  26 }
  27
  28 bool trace_backend_init(const char *events, const char *file)
  29 {
  30     if (events) {
  31         fprintf(stderr, "error: -trace events=...: "
  32                 "option not supported by the selected tracing backend\n");
  33         return false;
  34     }
  35     if (file) {
  36         fprintf(stderr, "error: -trace file=...: "
  37                 "option not supported by the selected tracing backend\n");
  38         return false;
  39     }
  40     return true;
  41 }