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Refactor backend state management

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This commit is contained in:
Drew DeVault 2017-05-07 10:00:23 -04:00
parent 7e9feb70a0
commit 15b1ce9e6c
11 changed files with 196 additions and 126 deletions
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113
backend/drm/backend.c
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@ -8,106 +8,101 @@
#include <wlr/session.h>
#include <wlr/common/list.h>
#include "backend.h"
#include "backend/drm/backend.h"
#include "backend/drm/drm.h"
#include "backend/drm/udev.h"
#include "common/log.h"
struct wlr_drm_backend *wlr_drm_backend_init(struct wl_display *display,
struct wlr_session *session, struct wl_listener *add, struct wl_listener *rem,
struct wl_listener *render) {
static bool wlr_drm_backend_init(struct wlr_backend_state *state) {
wlr_drm_scan_connectors(state);
return true;
}
struct wlr_drm_backend *backend = calloc(1, sizeof *backend);
static void free_output(void *item) {
struct wlr_drm_output *out = item;
wlr_drm_output_cleanup(out, true);
free(out);
}
static void wlr_drm_backend_destroy(struct wlr_backend_state *state) {
if (!state) {
return;
}
list_foreach(state->outputs, free_output);
list_free(state->outputs);
wlr_drm_renderer_free(&state->renderer);
wlr_udev_free(&state->udev);
wlr_session_close_file(state->session, state->fd);
wlr_session_finish(state->session);
wl_event_source_remove(state->drm_event);
free(state);
}
static struct wlr_backend_impl backend_impl = {
.init = wlr_drm_backend_init,
.destroy = wlr_drm_backend_destroy
};
struct wlr_backend *wlr_drm_backend_create(struct wl_display *display,
struct wlr_session *session) {
struct wlr_backend_state *state = calloc(1, sizeof(struct wlr_backend_state));
if (!state) {
wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
return NULL;
}
struct wlr_backend *backend = wlr_backend_create(&backend_impl, state);
if (!backend) {
wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
return NULL;
}
backend->session = session;
backend->outputs = list_create();
if (!backend->outputs) {
state->backend = backend;
state->session = session;
state->outputs = list_create();
if (!state->outputs) {
wlr_log(L_ERROR, "Failed to allocate list");
goto error_backend;
}
if (!wlr_udev_init(display, &backend->udev)) {
if (!wlr_udev_init(display, &state->udev)) {
wlr_log(L_ERROR, "Failed to start udev");
goto error_list;
}
backend->fd = wlr_udev_find_gpu(&backend->udev, backend->session);
if (backend->fd == -1) {
state->fd = wlr_udev_find_gpu(&state->udev, state->session);
if (state->fd == -1) {
wlr_log(L_ERROR, "Failed to open DRM device");
goto error_udev;
}
struct wl_event_loop *event_loop = wl_display_get_event_loop(display);
backend->drm_event = wl_event_loop_add_fd(event_loop, backend->fd,
state->drm_event = wl_event_loop_add_fd(event_loop, state->fd,
WL_EVENT_READABLE, wlr_drm_event, NULL);
if (!backend->drm_event) {
if (!state->drm_event) {
wlr_log(L_ERROR, "Failed to create DRM event source");
goto error_fd;
}
if (!wlr_drm_renderer_init(&backend->renderer, backend->fd)) {
if (!wlr_drm_renderer_init(&state->renderer, state->fd)) {
wlr_log(L_ERROR, "Failed to initialize renderer");
goto error_event;
}
wl_signal_init(&backend->signals.output_add);
wl_signal_init(&backend->signals.output_rem);
wl_signal_init(&backend->signals.output_render);
if (add) {
wl_signal_add(&backend->signals.output_add, add);
}
if (rem) {
wl_signal_add(&backend->signals.output_rem, rem);
}
if (render) {
wl_signal_add(&backend->signals.output_render, render);
}
wlr_drm_scan_connectors(backend);
return backend;
error_event:
wl_event_source_remove(backend->drm_event);
wl_event_source_remove(state->drm_event);
error_fd:
wlr_session_close_file(backend->session, backend->fd);
wlr_session_close_file(state->session, state->fd);
error_udev:
wlr_udev_free(&backend->udev);
wlr_udev_free(&state->udev);
error_list:
list_free(backend->outputs);
list_free(state->outputs);
error_backend:
free(state);
free(backend);
return NULL;
}
static void free_output(void *item)
{
struct wlr_drm_output *out = item;
wlr_drm_output_cleanup(out, true);
free(out);
}
void wlr_drm_backend_free(struct wlr_drm_backend *backend)
{
if (!backend)
return;
list_foreach(backend->outputs, free_output);
wlr_drm_renderer_free(&backend->renderer);
wlr_udev_free(&backend->udev);
wlr_session_close_file(backend->session, backend->fd);
wlr_session_finish(backend->session);
wl_event_source_remove(backend->drm_event);
list_free(backend->outputs);
free(backend);
}