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trace: separate trace event control and query routines from the simple backend

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Generalize the 'st_print_trace_events' and 'st_change_trace_event_state' into
backend-specific 'trace_print_events' and 'trace_event_set_state' (respectively)
in the "trace/control.h" file.

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
This commit is contained in:
Lluís 2011-08-31 20:31:18 +02:00 • committed by Stefan Hajnoczi
parent 49926043c1
commit fc76410539
6 changed files with 40 additions and 17 deletions
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15
trace/default.c
View file

@ -10,6 +10,21 @@
#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");
}
bool trace_event_set_state(const char *name, bool state)
{
fprintf(stderr, "warning: "
"cannot set the state of a trace event with the current backend\n");
return false;
}
bool trace_backend_init(const char *file)
{
if (file) {