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Changed session signal to only emit on DRM changes

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This commit is contained in:
Scott Anderson 2017-06-21 12:47:53 +12:00
parent d1493b2391
commit 091de12bf4
6 changed files with 60 additions and 69 deletions
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44
backend/drm/backend.c
View file

@ -40,37 +40,23 @@ static struct wlr_backend_impl backend_impl = {
.destroy = wlr_drm_backend_destroy .destroy = wlr_drm_backend_destroy
}; };
static void device_paused(struct wl_listener *listener, void *data) { static void session_signal(struct wl_listener *listener, void *data) {
struct wlr_backend_state *drm = wl_container_of(listener, drm, device_paused); struct wlr_backend_state *drm = wl_container_of(listener, drm, session_signal);
struct device_arg *arg = data; struct wlr_session *session = data;
// TODO: Actually pause the renderer or something.
// We currently just expect it to fail its next pageflip.
if (arg->dev == drm->dev) {
wlr_log(L_INFO, "DRM fd paused");
}
}
static void device_resumed(struct wl_listener *listener, void *data) {
struct wlr_backend_state *drm = wl_container_of(listener, drm, device_resumed);
struct device_arg *arg = data;
if (arg->dev != drm->dev) {
return;
}
if (dup2(arg->fd, drm->fd) < 0) {
wlr_log(L_ERROR, "dup2 failed: %s", strerror(errno));
return;
}
if (session->active) {
wlr_log(L_INFO, "DRM fd resumed"); wlr_log(L_INFO, "DRM fd resumed");
for (size_t i = 0; i < drm->outputs->length; ++i) { for (size_t i = 0; i < drm->outputs->length; ++i) {
struct wlr_output_state *output = drm->outputs->items[i]; struct wlr_output_state *output = drm->outputs->items[i];
wlr_drm_output_start_renderer(output); wlr_drm_output_start_renderer(output);
} }
} else {
wlr_log(L_INFO, "DRM fd paused");
// TODO: Actually pause the renderer or something.
// We currently just expect it to fail its next pageflip.
}
} }
static void drm_invalidated(struct wl_listener *listener, void *data) { static void drm_invalidated(struct wl_listener *listener, void *data) {
@ -139,14 +125,8 @@ struct wlr_backend *wlr_drm_backend_create(struct wl_display *display,
goto error_fd; goto error_fd;
} }
wl_list_init(&state->device_paused.link); state->session_signal.notify = session_signal;
wl_list_init(&state->device_paused.link); wl_signal_add(&session->session_signal, &state->session_signal);
state->device_paused.notify = device_paused;
state->device_resumed.notify = device_resumed;
wl_signal_add(&session->device_paused, &state->device_paused);
wl_signal_add(&session->device_resumed, &state->device_resumed);
// TODO: what is the difference between the per-output renderer and this // TODO: what is the difference between the per-output renderer and this
// one? // one?

2
example/simple.c
View file

@ -42,6 +42,8 @@ static void handle_keyboard_key(struct keyboard_state *kbstate,
xkb_keysym_t sym, enum wlr_key_state key_state) { xkb_keysym_t sym, enum wlr_key_state key_state) {
if (sym == XKB_KEY_Escape) { if (sym == XKB_KEY_Escape) {
kbstate->compositor->exit = true; kbstate->compositor->exit = true;
} else if (sym >= XKB_KEY_F1 && sym <= XKB_KEY_F12) {
wlr_session_change_vt(kbstate->compositor->session, sym - XKB_KEY_F1 + 1);
} }
} }

3
include/backend/drm.h
View file

@ -34,8 +34,7 @@ struct wlr_backend_state {
struct wlr_backend *backend; struct wlr_backend *backend;
struct wl_event_source *drm_event; struct wl_event_source *drm_event;
struct wl_listener device_paused; struct wl_listener session_signal;
struct wl_listener device_resumed;
struct wl_listener drm_invalidated; struct wl_listener drm_invalidated;
uint32_t taken_crtcs; uint32_t taken_crtcs;

11
include/wlr/session.h
View file

@ -1,22 +1,17 @@
#ifndef WLR_SESSION_H #ifndef WLR_SESSION_H
#define WLR_SESSION_H #define WLR_SESSION_H
#include <stdbool.h>
#include <wayland-server.h> #include <wayland-server.h>
#include <sys/types.h> #include <sys/types.h>
struct session_impl; struct session_impl;
// Passed to the listeners of device_paused/resumed
struct device_arg {
dev_t dev;
int fd; // Only for device_resumed
};
struct wlr_session { struct wlr_session {
const struct session_impl *impl; const struct session_impl *impl;
struct wl_signal device_paused; bool active;
struct wl_signal device_resumed; struct wl_signal session_signal;
}; };
struct wlr_session *wlr_session_start(struct wl_display *disp); struct wlr_session *wlr_session_start(struct wl_display *disp);

4
session/direct.c
View file

@ -45,8 +45,8 @@ static struct wlr_session *direct_session_start(struct wl_display *disp) {
wlr_log(L_INFO, "Successfully loaded direct session"); wlr_log(L_INFO, "Successfully loaded direct session");
session->base.impl = &session_direct; session->base.impl = &session_direct;
wl_signal_init(&session->base.device_paused); session->base.active = true;
wl_signal_init(&session->base.device_resumed); wl_signal_init(&session->base.session_signal);
return &session->base; return &session->base;
} }

53
session/logind.c
View file

@ -14,6 +14,8 @@
#include <wlr/session/interface.h> #include <wlr/session/interface.h>
#include "common/log.h" #include "common/log.h"
enum { DRM_MAJOR = 226 };
const struct session_impl session_logind; const struct session_impl session_logind;
struct logind_session { struct logind_session {
@ -25,12 +27,15 @@ struct logind_session {
char *id; char *id;
char *path; char *path;
char *seat; char *seat;
int drm_fd;
}; };
static int logind_take_device(struct wlr_session *restrict base, static int logind_take_device(struct wlr_session *restrict base,
const char *restrict path) { const char *restrict path) {
struct logind_session *session = wl_container_of(base, session, base); struct logind_session *session = wl_container_of(base, session, base);
wlr_log(L_DEBUG, "Taking '%s'", path);
int ret; int ret;
int fd = -1; int fd = -1;
sd_bus_message *msg = NULL; sd_bus_message *msg = NULL;
@ -58,7 +63,7 @@ static int logind_take_device(struct wlr_session *restrict base,
goto error; goto error;
} }
// The original fd seem to be closed when the message is freed // The original fd seems to be closed when the message is freed
// so we just clone it. // so we just clone it.
fd = fcntl(fd, F_DUPFD_CLOEXEC, 0); fd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
if (fd == -1) { if (fd == -1) {
@ -67,6 +72,10 @@ static int logind_take_device(struct wlr_session *restrict base,
goto error; goto error;
} }
if (major(st.st_rdev) == DRM_MAJOR) {
session->drm_fd = fd;
}
error: error:
sd_bus_error_free(&error); sd_bus_error_free(&error);
sd_bus_message_unref(msg); sd_bus_message_unref(msg);
@ -93,6 +102,10 @@ static void logind_release_device(struct wlr_session *base, int fd) {
wlr_log(L_ERROR, "Failed to release device '%d'", fd); wlr_log(L_ERROR, "Failed to release device '%d'", fd);
} }
if (major(st.st_rdev) == DRM_MAJOR) {
session->drm_fd = -1;
}
sd_bus_error_free(&error); sd_bus_error_free(&error);
sd_bus_message_unref(msg); sd_bus_message_unref(msg);
} }
@ -185,30 +198,32 @@ static int session_removed(sd_bus_message *msg, void *userdata, sd_bus_error *re
} }
static int pause_device(sd_bus_message *msg, void *userdata, sd_bus_error *ret_error) { static int pause_device(sd_bus_message *msg, void *userdata, sd_bus_error *ret_error) {
wlr_log(L_INFO, "PauseDevice signal received");
struct logind_session *session = userdata; struct logind_session *session = userdata;
int ret; int ret;
uint32_t major, minor; uint32_t major, minor;
ret = sd_bus_message_read(msg, "uu", &major, &minor); const char *type;
ret = sd_bus_message_read(msg, "uus", &major, &minor, &type);
if (ret < 0) { if (ret < 0) {
wlr_log(L_ERROR, "Failed to parse D-Bus response for PauseDevice: %s", wlr_log(L_ERROR, "Failed to parse D-Bus response for PauseDevice: %s",
strerror(-ret)); strerror(-ret));
goto error; goto error;
} }
wlr_log(L_INFO, "PauseDevice signal received: (%lu) %s", makedev(major, minor), type);
struct device_arg arg = { if (major == DRM_MAJOR) {
.dev = makedev(major, minor), session->base.active = false;
.fd = -1, wl_signal_emit(&session->base.session_signal, session);
}; }
wl_signal_emit(&session->base.device_paused, &arg);
if (strcmp(type, "pause") == 0) {
ret = sd_bus_call_method(session->bus, "org.freedesktop.login1", ret = sd_bus_call_method(session->bus, "org.freedesktop.login1",
session->path, "org.freedesktop.login1.Session", "PauseDeviceComplete", session->path, "org.freedesktop.login1.Session", "PauseDeviceComplete",
ret_error, &msg, "uu", major, minor); ret_error, &msg, "uu", major, minor);
if (ret < 0) { if (ret < 0) {
wlr_log(L_ERROR, "Failed to send PauseDeviceComplete signal"); wlr_log(L_ERROR, "Failed to send PauseDeviceComplete signal: %s",
strerror(-ret));
}
} }
error: error:
@ -216,7 +231,6 @@ error:
} }
static int resume_device(sd_bus_message *msg, void *userdata, sd_bus_error *ret_error) { static int resume_device(sd_bus_message *msg, void *userdata, sd_bus_error *ret_error) {
wlr_log(L_INFO, "ResumeDevice signal received");
struct logind_session *session = userdata; struct logind_session *session = userdata;
int ret; int ret;
@ -228,13 +242,13 @@ static int resume_device(sd_bus_message *msg, void *userdata, sd_bus_error *ret_
strerror(-ret)); strerror(-ret));
goto error; goto error;
} }
wlr_log(L_INFO, "ResumeDevice signal received (%lu)", makedev(major, minor));
struct device_arg arg = { if (major == DRM_MAJOR) {
.dev = makedev(major, minor), dup2(fd, session->drm_fd);
.fd = fd, session->base.active = true;
}; wl_signal_emit(&session->base.session_signal, session);
}
wl_signal_emit(&session->base.device_resumed, &arg);
error: error:
return 0; return 0;
@ -334,9 +348,10 @@ static struct wlr_session *logind_session_start(struct wl_display *disp) {
wlr_log(L_INFO, "Successfully loaded logind session"); wlr_log(L_INFO, "Successfully loaded logind session");
session->drm_fd = -1;
session->base.impl = &session_logind; session->base.impl = &session_logind;
wl_signal_init(&session->base.device_paused); session->base.active = true;
wl_signal_init(&session->base.device_resumed); wl_signal_init(&session->base.session_signal);
return &session->base; return &session->base;
error_bus: error_bus: