da949d495d
When reviewing tracetool patches it is often very unclear what the expected output will be for the generated backends. Compounding this is that a default build will only enable the 'log' trace backend, so developers won't see generated code for other backends without making a special effort. Some backends are also platform specific, so can't be enabled in QEMU builds, even though tracetool could generate the code. To address this, introduce a test suite for tracetool which is conceptually similar to the qapi-schema test. It is a simple python program that runs tracetool and compares the actual output to historical reference output kept in git. The test directly emits TAP format logs for ease of integration with meson. This can be run with make check-tracetool to make it easier for developers changing generated output, the sample expected content can be auto-recreated QEMU_TEST_REGENERATE=1 make check-tracetool and the changes reviewed and added to the commit. This will also assist reviewers interpreting the change. Developers are reminded of this in the test output on failure: $ make check-tracetool 1/6 qemu:tracetool / dtrace OK 0.14s 2/6 qemu:tracetool / ftrace FAIL 0.06s exit status 1 ―――――――――――――――――――――――――――――――――――――――――――――――――――――――――― 1..2 ok 1 - ftrace.c # not ok 1 - ftrace.h (set QEMU_TEST_REGENERATE=1 to recreate reference output if tracetool generator was intentionally changed) ―――――――――――――――――――――――――――――――――――――――――――――――――――――――――― 3/6 qemu:tracetool / log OK 0.06s 4/6 qemu:tracetool / simple OK 0.06s 5/6 qemu:tracetool / syslog OK 0.06s 6/6 qemu:tracetool / ust OK 0.11s Summary of Failures: 2/6 qemu:tracetool / ftrace FAIL 0.06s exit status 1 Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Message-id: 20250916081638.764020-6-berrange@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/* This file is autogenerated by tracetool, do not edit. */
|
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
|
|
#ifndef TRACE_TESTSUITE_GENERATED_TRACERS_H
|
|
#define TRACE_TESTSUITE_GENERATED_TRACERS_H
|
|
|
|
#include "trace/control.h"
|
|
|
|
extern TraceEvent _TRACE_TEST_BLAH_EVENT;
|
|
extern TraceEvent _TRACE_TEST_WIBBLE_EVENT;
|
|
extern uint16_t _TRACE_TEST_BLAH_DSTATE;
|
|
extern uint16_t _TRACE_TEST_WIBBLE_DSTATE;
|
|
#define TRACE_TEST_BLAH_ENABLED 1
|
|
#define TRACE_TEST_WIBBLE_ENABLED 1
|
|
#include <syslog.h>
|
|
|
|
|
|
#define TRACE_TEST_BLAH_BACKEND_DSTATE() ( \
|
|
trace_event_get_state_dynamic_by_id(TRACE_TEST_BLAH) || \
|
|
false)
|
|
|
|
static inline void _nocheck__trace_test_blah(void *context, const char *filename)
|
|
{
|
|
if (trace_event_get_state(TRACE_TEST_BLAH)) {
|
|
#line 4 "trace-events"
|
|
syslog(LOG_INFO, "test_blah " "Blah context=%p filename=%s" , context, filename);
|
|
#line 28 "syslog.h"
|
|
}
|
|
}
|
|
|
|
static inline void trace_test_blah(void *context, const char *filename)
|
|
{
|
|
if (true) {
|
|
_nocheck__trace_test_blah(context, filename);
|
|
}
|
|
}
|
|
|
|
#define TRACE_TEST_WIBBLE_BACKEND_DSTATE() ( \
|
|
trace_event_get_state_dynamic_by_id(TRACE_TEST_WIBBLE) || \
|
|
false)
|
|
|
|
static inline void _nocheck__trace_test_wibble(void *context, int value)
|
|
{
|
|
if (trace_event_get_state(TRACE_TEST_WIBBLE)) {
|
|
#line 5 "trace-events"
|
|
syslog(LOG_INFO, "test_wibble " "Wibble context=%p value=%d" , context, value);
|
|
#line 48 "syslog.h"
|
|
}
|
|
}
|
|
|
|
static inline void trace_test_wibble(void *context, int value)
|
|
{
|
|
if (true) {
|
|
_nocheck__trace_test_wibble(context, value);
|
|
}
|
|
}
|
|
#endif /* TRACE_TESTSUITE_GENERATED_TRACERS_H */
|