qemu/trace/default.c
Lluís Vilanova fd068a953c trace: [default] Port to generic event information and new control interface
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28 14:19:57 +01:00

41 lines
1.2 KiB
C

/*
* Default implementation for backend initialization from commandline.
*
* Copyright (C) 2011-2012 Lluís Vilanova <vilanova@ac.upc.edu>
*
* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
*/
#include "trace/control.h"
void trace_print_events(FILE *stream, fprintf_function stream_printf)
{
fprintf(stderr, "warning: "
"cannot print the trace events with the current backend\n");
stream_printf(stream, "error: "
"operation not supported with the current backend\n");
}
void trace_event_set_state_dynamic_backend(TraceEvent *ev, bool state)
{
fprintf(stderr, "warning: "
"cannot set the state of a trace event with the current backend\n");
}
bool trace_backend_init(const char *events, const char *file)
{
if (events) {
fprintf(stderr, "error: -trace events=...: "
"option not supported by the selected tracing backend\n");
return false;
}
if (file) {
fprintf(stderr, "error: -trace file=...: "
"option not supported by the selected tracing backend\n");
return false;
}
return true;
}