From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59831) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zf4sH-00019Q-Ci for qemu-devel@nongnu.org; Thu, 24 Sep 2015 07:39:45 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zf4sG-0007Dt-AH for qemu-devel@nongnu.org; Thu, 24 Sep 2015 07:39:41 -0400 Received: from mail-qg0-x235.google.com ([2607:f8b0:400d:c04::235]:34243) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zf4sG-0007Df-6a for qemu-devel@nongnu.org; Thu, 24 Sep 2015 07:39:40 -0400 Received: by qgez77 with SMTP id z77so41624530qge.1 for ; Thu, 24 Sep 2015 04:39:40 -0700 (PDT) Sender: =?UTF-8?B?TWFyYy1BbmRyw6kgTHVyZWF1?= From: marcandre.lureau@redhat.com Date: Thu, 24 Sep 2015 13:37:41 +0200 Message-Id: <1443094669-4144-40-git-send-email-marcandre.lureau@redhat.com> In-Reply-To: <1443094669-4144-1-git-send-email-marcandre.lureau@redhat.com> References: <1443094669-4144-1-git-send-email-marcandre.lureau@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PATCH v4 39/47] qtest: add qtest_add_abrt_handler() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: drjones@redhat.com, claudio.fontana@huawei.com, stefanha@redhat.com, =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , pbonzini@redhat.com, cam@cs.ualberta.ca From: Marc-André Lureau Allow a test to add abort handlers, use GHook for all handlers. There is currently no way to remove a handler, but it could be later added if needed. Signed-off-by: Marc-André Lureau --- tests/libqtest.c | 37 ++++++++++++++++++++++++------------- tests/libqtest.h | 2 ++ 2 files changed, 26 insertions(+), 13 deletions(-) diff --git a/tests/libqtest.c b/tests/libqtest.c index e5188e0..4a3a6ad 100644 --- a/tests/libqtest.c +++ b/tests/libqtest.c @@ -49,6 +49,7 @@ struct QTestState struct sigaction sigact_old; /* restored on exit */ }; +static GHookList abrt_hooks; static GList *qtest_instances; static struct sigaction sigact_old; @@ -112,10 +113,7 @@ static void kill_qemu(QTestState *s) static void sigabrt_handler(int signo) { - GList *elem; - for (elem = qtest_instances; elem; elem = elem->next) { - kill_qemu(elem->data); - } + g_hook_list_invoke(&abrt_hooks, FALSE); } static void setup_sigabrt_handler(void) @@ -136,6 +134,23 @@ static void cleanup_sigabrt_handler(void) sigaction(SIGABRT, &sigact_old, NULL); } +void qtest_add_abrt_handler(void (*fn), const void *data) +{ + GHook *hook; + + /* Only install SIGABRT handler once */ + if (!abrt_hooks.is_setup) { + g_hook_list_init(&abrt_hooks, sizeof(GHook)); + setup_sigabrt_handler(); + } + + hook = g_hook_alloc(&abrt_hooks); + hook->func = fn; + hook->data = (void *)data; + + g_hook_prepend(&abrt_hooks, hook); +} + QTestState *qtest_init(const char *extra_args) { QTestState *s; @@ -156,12 +171,7 @@ QTestState *qtest_init(const char *extra_args) sock = init_socket(socket_path); qmpsock = init_socket(qmp_socket_path); - /* Only install SIGABRT handler once */ - if (!qtest_instances) { - setup_sigabrt_handler(); - } - - qtest_instances = g_list_prepend(qtest_instances, s); + qtest_add_abrt_handler(kill_qemu, s); s->qemu_pid = fork(); if (s->qemu_pid == 0) { @@ -209,13 +219,14 @@ QTestState *qtest_init(const char *extra_args) void qtest_quit(QTestState *s) { + qtest_instances = g_list_remove(qtest_instances, s); + g_hook_destroy_link(&abrt_hooks, g_hook_find_data(&abrt_hooks, TRUE, s)); + /* Uninstall SIGABRT handler on last instance */ - if (qtest_instances && !qtest_instances->next) { + if (!qtest_instances) { cleanup_sigabrt_handler(); } - qtest_instances = g_list_remove(qtest_instances, s); - kill_qemu(s); close(s->fd); close(s->qmp_fd); diff --git a/tests/libqtest.h b/tests/libqtest.h index ec42031..f02c07c 100644 --- a/tests/libqtest.h +++ b/tests/libqtest.h @@ -427,6 +427,8 @@ void qtest_add_data_func(const char *str, const void *data, void (*fn)); g_free(path); \ } while (0) +void qtest_add_abrt_handler(void (*fn), const void *data); + /** * qtest_start: * @args: other arguments to pass to QEMU -- 2.4.3