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rootston: handle backend creation failed
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ca6a0ef1bb
commit
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4 changed files with 15 additions and 3 deletions
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@ -42,7 +42,6 @@ static void subbackend_state_destroy(struct subbackend_state *sub) {
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static void multi_backend_destroy(struct wlr_backend *wlr_backend) {
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struct wlr_multi_backend *backend = (struct wlr_multi_backend *)wlr_backend;
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wl_list_remove(&backend->display_destroy.link);
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struct subbackend_state *sub, *next;
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wl_list_for_each_safe(sub, next, &backend->backends, link) {
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// XXX do we really want to take ownership over added backends?
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@ -190,3 +189,9 @@ struct wlr_session *wlr_multi_get_session(struct wlr_backend *_backend) {
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}
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return NULL;
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}
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bool wlr_multi_is_empty(struct wlr_backend *_backend) {
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assert(wlr_backend_is_multi(_backend));
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struct wlr_multi_backend *backend = (struct wlr_multi_backend *)_backend;
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return wl_list_length(&backend->backends) < 1;
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}
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@ -10,8 +10,6 @@ struct wlr_multi_backend {
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struct wlr_backend backend;
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struct wl_list backends;
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struct wl_listener display_destroy;
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};
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#endif
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@ -16,4 +16,6 @@ bool wlr_backend_is_multi(struct wlr_backend *backend);
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struct wlr_session *wlr_multi_get_session(struct wlr_backend *base);
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bool wlr_multi_is_empty(struct wlr_backend *backend);
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#endif
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@ -5,6 +5,7 @@
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#include <wayland-server.h>
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#include <wlr/backend.h>
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#include <wlr/backend/headless.h>
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#include <wlr/backend/multi.h>
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#include <wlr/render.h>
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#include <wlr/render/gles2.h>
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#include <wlr/util/log.h>
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@ -32,6 +33,12 @@ int main(int argc, char **argv) {
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assert(server.backend = wlr_backend_autocreate(server.wl_display));
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if (wlr_multi_is_empty(server.backend)) {
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wlr_log(L_ERROR, "could not start backend");
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wlr_backend_destroy(server.backend);
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return 1;
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}
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assert(server.renderer = wlr_gles2_renderer_create(server.backend));
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server.data_device_manager =
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wlr_data_device_manager_create(server.wl_display);
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