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rootston: handle backend creation failed

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This commit is contained in:
Tony Crisci 2017-12-20 05:51:23 -05:00
parent ca6a0ef1bb
commit ee39dff1e7
4 changed files with 15 additions and 3 deletions
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7
backend/multi/backend.c
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@ -42,7 +42,6 @@ static void subbackend_state_destroy(struct subbackend_state *sub) {
static void multi_backend_destroy(struct wlr_backend *wlr_backend) {
struct wlr_multi_backend *backend = (struct wlr_multi_backend *)wlr_backend;
wl_list_remove(&backend->display_destroy.link);
struct subbackend_state *sub, *next;
wl_list_for_each_safe(sub, next, &backend->backends, link) {
// XXX do we really want to take ownership over added backends?
@ -190,3 +189,9 @@ struct wlr_session *wlr_multi_get_session(struct wlr_backend *_backend) {
}
return NULL;
}
bool wlr_multi_is_empty(struct wlr_backend *_backend) {
assert(wlr_backend_is_multi(_backend));
struct wlr_multi_backend *backend = (struct wlr_multi_backend *)_backend;
return wl_list_length(&backend->backends) < 1;
}

2
include/backend/multi.h
View file

@ -10,8 +10,6 @@ struct wlr_multi_backend {
struct wlr_backend backend;
struct wl_list backends;
struct wl_listener display_destroy;
};
#endif

2
include/wlr/backend/multi.h
View file

@ -16,4 +16,6 @@ bool wlr_backend_is_multi(struct wlr_backend *backend);
struct wlr_session *wlr_multi_get_session(struct wlr_backend *base);
bool wlr_multi_is_empty(struct wlr_backend *backend);
#endif

7
rootston/main.c
View file

@ -5,6 +5,7 @@
#include <wayland-server.h>
#include <wlr/backend.h>
#include <wlr/backend/headless.h>
#include <wlr/backend/multi.h>
#include <wlr/render.h>
#include <wlr/render/gles2.h>
#include <wlr/util/log.h>
@ -32,6 +33,12 @@ int main(int argc, char **argv) {
assert(server.backend = wlr_backend_autocreate(server.wl_display));
if (wlr_multi_is_empty(server.backend)) {
wlr_log(L_ERROR, "could not start backend");
wlr_backend_destroy(server.backend);
return 1;
}
assert(server.renderer = wlr_gles2_renderer_create(server.backend));
server.data_device_manager =
wlr_data_device_manager_create(server.wl_display);