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Changed session signal to only emit on DRM changes

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master
Scott Anderson 8 years ago
parent d1493b2391
commit 091de12bf4
6 changed files with 62 additions and 71 deletions
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52
backend/drm/backend.c
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@ -40,36 +40,22 @@ static struct wlr_backend_impl backend_impl = {
.destroy = wlr_drm_backend_destroy
};
static void device_paused(struct wl_listener *listener, void *data) {
struct wlr_backend_state *drm = wl_container_of(listener, drm, device_paused);
struct device_arg *arg = data;
// TODO: Actually pause the renderer or something.
// We currently just expect it to fail its next pageflip.
if (arg->dev == drm->dev) {
static void session_signal(struct wl_listener *listener, void *data) {
struct wlr_backend_state *drm = wl_container_of(listener, drm, session_signal);
struct wlr_session *session = data;
if (session->active) {
wlr_log(L_INFO, "DRM fd resumed");
for (size_t i = 0; i < drm->outputs->length; ++i) {
struct wlr_output_state *output = drm->outputs->items[i];
wlr_drm_output_start_renderer(output);
}
} else {
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;
}
wlr_log(L_INFO, "DRM fd resumed");
for (size_t i = 0; i < drm->outputs->length; ++i) {
struct wlr_output_state *output = drm->outputs->items[i];
wlr_drm_output_start_renderer(output);
// TODO: Actually pause the renderer or something.
// We currently just expect it to fail its next pageflip.
}
}
@ -139,14 +125,8 @@ struct wlr_backend *wlr_drm_backend_create(struct wl_display *display,
goto error_fd;
}
wl_list_init(&state->device_paused.link);
wl_list_init(&state->device_paused.link);
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);
state->session_signal.notify = session_signal;
wl_signal_add(&session->session_signal, &state->session_signal);
// TODO: what is the difference between the per-output renderer and this
// one?

2
example/simple.c
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@ -42,6 +42,8 @@ static void handle_keyboard_key(struct keyboard_state *kbstate,
xkb_keysym_t sym, enum wlr_key_state key_state) {
if (sym == XKB_KEY_Escape) {
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
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@ -34,8 +34,7 @@ struct wlr_backend_state {
struct wlr_backend *backend;
struct wl_event_source *drm_event;
struct wl_listener device_paused;
struct wl_listener device_resumed;
struct wl_listener session_signal;
struct wl_listener drm_invalidated;
uint32_t taken_crtcs;

11
include/wlr/session.h
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@ -1,22 +1,17 @@
#ifndef WLR_SESSION_H
#define WLR_SESSION_H
#include <stdbool.h>
#include <wayland-server.h>
#include <sys/types.h>
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 {
const struct session_impl *impl;
struct wl_signal device_paused;
struct wl_signal device_resumed;
bool active;
struct wl_signal session_signal;
};
struct wlr_session *wlr_session_start(struct wl_display *disp);

4
session/direct.c
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@ -45,8 +45,8 @@ static struct wlr_session *direct_session_start(struct wl_display *disp) {
wlr_log(L_INFO, "Successfully loaded direct session");
session->base.impl = &session_direct;
wl_signal_init(&session->base.device_paused);
wl_signal_init(&session->base.device_resumed);
session->base.active = true;
wl_signal_init(&session->base.session_signal);
return &session->base;
}

61
session/logind.c
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@ -14,6 +14,8 @@
#include <wlr/session/interface.h>
#include "common/log.h"
enum { DRM_MAJOR = 226 };
const struct session_impl session_logind;
struct logind_session {
@ -25,12 +27,15 @@ struct logind_session {
char *id;
char *path;
char *seat;
int drm_fd;
};
static int logind_take_device(struct wlr_session *restrict base,
const char *restrict path) {
struct logind_session *session = wl_container_of(base, session, base);
wlr_log(L_DEBUG, "Taking '%s'", path);
int ret;
int fd = -1;
sd_bus_message *msg = NULL;
@ -58,7 +63,7 @@ static int logind_take_device(struct wlr_session *restrict base,
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.
fd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
if (fd == -1) {
@ -67,6 +72,10 @@ static int logind_take_device(struct wlr_session *restrict base,
goto error;
}
if (major(st.st_rdev) == DRM_MAJOR) {
session->drm_fd = fd;
}
error:
sd_bus_error_free(&error);
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);
}
if (major(st.st_rdev) == DRM_MAJOR) {
session->drm_fd = -1;
}
sd_bus_error_free(&error);
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) {
wlr_log(L_INFO, "PauseDevice signal received");
struct logind_session *session = userdata;
int ret;
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) {
wlr_log(L_ERROR, "Failed to parse D-Bus response for PauseDevice: %s",
strerror(-ret));
goto error;
}
wlr_log(L_INFO, "PauseDevice signal received: (%lu) %s", makedev(major, minor), type);
struct device_arg arg = {
.dev = makedev(major, minor),
.fd = -1,
};
wl_signal_emit(&session->base.device_paused, &arg);
if (major == DRM_MAJOR) {
session->base.active = false;
wl_signal_emit(&session->base.session_signal, session);
}
ret = sd_bus_call_method(session->bus, "org.freedesktop.login1",
session->path, "org.freedesktop.login1.Session", "PauseDeviceComplete",
ret_error, &msg, "uu", major, minor);
if (ret < 0) {
wlr_log(L_ERROR, "Failed to send PauseDeviceComplete signal");
if (strcmp(type, "pause") == 0) {
ret = sd_bus_call_method(session->bus, "org.freedesktop.login1",
session->path, "org.freedesktop.login1.Session", "PauseDeviceComplete",
ret_error, &msg, "uu", major, minor);
if (ret < 0) {
wlr_log(L_ERROR, "Failed to send PauseDeviceComplete signal: %s",
strerror(-ret));
}
}
error:
@ -216,7 +231,6 @@ 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;
int ret;
@ -228,13 +242,13 @@ static int resume_device(sd_bus_message *msg, void *userdata, sd_bus_error *ret_
strerror(-ret));
goto error;
}
wlr_log(L_INFO, "ResumeDevice signal received (%lu)", makedev(major, minor));
struct device_arg arg = {
.dev = makedev(major, minor),
.fd = fd,
};
wl_signal_emit(&session->base.device_resumed, &arg);
if (major == DRM_MAJOR) {
dup2(fd, session->drm_fd);
session->base.active = true;
wl_signal_emit(&session->base.session_signal, session);
}
error:
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");
session->drm_fd = -1;
session->base.impl = &session_logind;
wl_signal_init(&session->base.device_paused);
wl_signal_init(&session->base.device_resumed);
session->base.active = true;
wl_signal_init(&session->base.session_signal);
return &session->base;
error_bus:

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