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error: add global &error_warn destination

Browse source 
This can help debugging issues or develop, when error handling is
introduced.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Message-Id: <20230221124802.4103554-6-marcandre.lureau@redhat.com>
This commit is contained in:
Marc-André Lureau 2023-02-21 16:47:50 +04:00
parent 6bbee5dbaa
commit 3ffef1a55c
3 changed files with 31 additions and 3 deletions
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6
include/qapi/error.h
View file

@ -519,6 +519,12 @@ static inline void error_propagator_cleanup(ErrorPropagator *prop)
G_DEFINE_AUTO_CLEANUP_CLEAR_FUNC(ErrorPropagator, error_propagator_cleanup);
/*
* Special error destination to warn on error.
* See error_setg() and error_propagate() for details.
*/
extern Error *error_warn;
/*
* Special error destination to abort on error.
* See error_setg() and error_propagate() for details.

18
tests/unit/test-error-report.c
View file

@ -12,6 +12,7 @@
#include <locale.h>
#include "qemu/error-report.h"
#include "qapi/error.h"
static void
test_error_report_simple(void)
@ -103,6 +104,22 @@ test_error_report_timestamp(void)
");
}
static void
test_error_warn(void)
{
if (g_test_subprocess()) {
error_setg(&error_warn, "Testing &error_warn");
return;
}
g_test_trap_subprocess(NULL, 0, 0);
g_test_trap_assert_passed();
g_test_trap_assert_stderr("\
test-error-report: warning: Testing &error_warn*\
");
}
int
main(int argc, char *argv[])
{
@ -116,6 +133,7 @@ main(int argc, char *argv[])
g_test_add_func("/error-report/glog", test_error_report_glog);
g_test_add_func("/error-report/once", test_error_report_once);
g_test_add_func("/error-report/timestamp", test_error_report_timestamp);
g_test_add_func("/error-report/warn", test_error_warn);
return g_test_run();
}

10
util/error.c
View file

@ -27,8 +27,9 @@ struct Error
Error *error_abort;
Error *error_fatal;
Error *error_warn;
static void error_handle_fatal(Error **errp, Error *err)
static void error_handle(Error **errp, Error *err)
{
if (errp == &error_abort) {
fprintf(stderr, "Unexpected error in %s() at %s:%d:\n",
@ -43,6 +44,9 @@ static void error_handle_fatal(Error **errp, Error *err)
error_report_err(err);
exit(1);
}
if (errp == &error_warn) {
warn_report_err(err);
}
}
G_GNUC_PRINTF(6, 0)
@ -71,7 +75,7 @@ static void error_setv(Error **errp,
err->line = line;
err->func = func;
error_handle_fatal(errp, err);
error_handle(errp, err);
*errp = err;
errno = saved_errno;
@ -284,7 +288,7 @@ void error_propagate(Error **dst_errp, Error *local_err)
if (!local_err) {
return;
}
error_handle_fatal(dst_errp, local_err);
error_handle(dst_errp, local_err);
if (dst_errp && !*dst_errp) {
*dst_errp = local_err;
} else {