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trace: [stderr] Port to generic event information and new control interface

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Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Lluís Vilanova 2013-03-05 14:48:00 +01:00 committed by Stefan Hajnoczi
parent 60481e210d
commit c6f18b9195
3 changed files with 14 additions and 58 deletions
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27
scripts/tracetool/backend/stderr.py
View file

@ -20,40 +20,29 @@
def c(events):
out('#include "trace.h"',
'',
'TraceEvent trace_list[] = {')
for e in events:
out('{.tp_name = "%(name)s", .state=0},',
name = e.name,
)
out('};')
pass
def h(events):
out('#include <stdio.h>',
'#include "trace/stderr.h"',
'#include "trace/control.h"',
'',
'extern TraceEvent trace_list[];')
)
for num, e in enumerate(events):
for e in events:
argnames = ", ".join(e.args.names())
if len(e.args) > 0:
argnames = ", " + argnames
out('static inline void trace_%(name)s(%(args)s)',
'{',
' if (trace_list[%(event_num)s].state != 0) {',
' bool _state = trace_event_get_state(%(event_id)s);',
' if (_state) {',
' fprintf(stderr, "%(name)s " %(fmt)s "\\n" %(argnames)s);',
' }',
'}',
name = e.name,
args = e.args,
event_num = num,
fmt = e.fmt,
event_id = "TRACE_" + e.name.upper(),
fmt = e.fmt.rstrip("\n"),
argnames = argnames,
)
out('',
'#define NR_TRACE_EVENTS %d' % len(events))

34
trace/stderr.c
View file

@ -4,40 +4,18 @@
void trace_print_events(FILE *stream, fprintf_function stream_printf)
{
unsigned int i;
TraceEventID i;
for (i = 0; i < NR_TRACE_EVENTS; i++) {
for (i = 0; i < trace_event_count(); i++) {
TraceEvent *ev = trace_event_id(i);
stream_printf(stream, "%s [Event ID %u] : state %u\n",
trace_list[i].tp_name, i, trace_list[i].state);
trace_event_get_name(ev), i, trace_event_get_state_dynamic(ev));
}
}
bool trace_event_set_state(const char *name, bool state)
void trace_event_set_state_dynamic_backend(TraceEvent *ev, bool state)
{
unsigned int i;
unsigned int len;
bool wildcard = false;
bool matched = false;
len = strlen(name);
if (len > 0 && name[len - 1] == '*') {
wildcard = true;
len -= 1;
}
for (i = 0; i < NR_TRACE_EVENTS; i++) {
if (wildcard) {
if (!strncmp(trace_list[i].tp_name, name, len)) {
trace_list[i].state = state;
matched = true;
}
continue;
}
if (!strcmp(trace_list[i].tp_name, name)) {
trace_list[i].state = state;
return true;
}
}
return matched;
ev->dstate = state;
}
bool trace_backend_init(const char *events, const char *file)

11
trace/stderr.h
View file

@ -1,11 +0,0 @@
#ifndef TRACE_STDERR_H
#define TRACE_STDERR_H
typedef uint64_t TraceEventID;
typedef struct {
const char *tp_name;
bool state;
} TraceEvent;
#endif /* ! TRACE_STDERR_H */