Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
[qemu.git] / trace / default.c
1 /*
2 * Default implementation for backend initialization from commandline.
3 *
4 * Copyright (C) 2011-2012 LluĂ­s 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 }