mirror of
https://github.com/RGBCube/serenity
synced 2025-07-25 05:07:34 +00:00
Move WindowServer to userspace.
This is a monster patch that required changing a whole bunch of things. There are performance and stability issues all over the place, but it works. Pretty cool, I have to admit :^)
This commit is contained in:
Andreas Kling
parent
0b1b21d622
commit
640360e958
41 changed files with 325 additions and 463 deletions
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@ -4,18 +4,21 @@
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#include "WSWindowManager.h"
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#include "WSScreen.h"
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#include <WindowServer/WSClientConnection.h>
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#include "PS2MouseDevice.h"
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#include <Kernel/Keyboard.h>
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#include <Kernel/KeyCode.h>
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#include <WindowServer/WSAPITypes.h>
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#include <AK/Bitmap.h>
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#include "Process.h"
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#include <unistd.h>
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#include <time.h>
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#include <sys/socket.h>
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#include <sys/select.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <errno.h>
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//#define WSEVENTLOOP_DEBUG
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static WSMessageLoop* s_the;
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WSMessageLoop::WSMessageLoop()
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: m_lock("WSMessageLoop")
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{
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if (!s_the)
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s_the = this;
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@ -33,21 +36,19 @@ WSMessageLoop& WSMessageLoop::the()
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int WSMessageLoop::exec()
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{
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ASSERT(m_server_process == current);
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m_keyboard_fd = open("/dev/keyboard", O_RDONLY | O_NONBLOCK | O_CLOEXEC);
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m_mouse_fd = open("/dev/psaux", O_RDONLY | O_NONBLOCK | O_CLOEXEC);
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m_keyboard_fd = m_server_process->sys$open("/dev/keyboard", O_RDONLY);
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m_mouse_fd = m_server_process->sys$open("/dev/psaux", O_RDONLY);
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unlink("/wsportal");
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m_server_process->sys$unlink("/wsportal");
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m_server_fd = m_server_process->sys$socket(AF_LOCAL, SOCK_STREAM | SOCK_NONBLOCK, 0);
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m_server_fd = socket(AF_LOCAL, SOCK_STREAM | SOCK_NONBLOCK | SOCK_CLOEXEC, 0);
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ASSERT(m_server_fd >= 0);
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sockaddr_un address;
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address.sun_family = AF_LOCAL;
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strcpy(address.sun_path, "/wsportal");
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int rc = m_server_process->sys$bind(m_server_fd, (const sockaddr*)&address, sizeof(address));
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int rc = bind(m_server_fd, (const sockaddr*)&address, sizeof(address));
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ASSERT(rc == 0);
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rc = m_server_process->sys$listen(m_server_fd, 5);
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rc = listen(m_server_fd, 5);
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ASSERT(rc == 0);
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ASSERT(m_keyboard_fd >= 0);
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@ -56,13 +57,7 @@ int WSMessageLoop::exec()
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m_running = true;
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for (;;) {
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wait_for_message();
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Vector<QueuedMessage> messages;
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{
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ASSERT_INTERRUPTS_ENABLED();
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LOCKER(m_lock);
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messages = move(m_queued_messages);
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}
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Vector<QueuedMessage> messages = move(m_queued_messages);
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for (auto& queued_message : messages) {
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auto* receiver = queued_message.receiver;
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@ -81,12 +76,6 @@ int WSMessageLoop::exec()
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}
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}
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Process* WSMessageLoop::process_from_client_id(int client_id)
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{
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// FIXME: This shouldn't work this way lol.
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return (Process*)client_id;
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}
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void WSMessageLoop::post_message_to_client(int client_id, const WSAPI_ServerMessage& message)
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{
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auto* client = WSClientConnection::from_client_id(client_id);
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@ -97,53 +86,16 @@ void WSMessageLoop::post_message_to_client(int client_id, const WSAPI_ServerMess
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void WSMessageLoop::post_message(WSMessageReceiver* receiver, OwnPtr<WSMessage>&& message)
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{
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LOCKER(m_lock);
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#ifdef WSEVENTLOOP_DEBUG
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dbgprintf("WSMessageLoop::post_message: {%u} << receiver=%p, message=%p (type=%u)\n", m_queued_messages.size(), receiver, message.ptr(), message->type());
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#endif
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#if 0
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if (message->type() == WSMessage::WM_ClientFinishedPaint) {
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auto& invalidation_message = static_cast<WSClientFinishedPaintMessage&>(*message);
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for (auto& queued_message : m_queued_messages) {
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if (receiver == queued_message.receiver && queued_message.message->type() == WSMessage::WM_ClientFinishedPaint) {
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auto& queued_invalidation_message = static_cast<WSClientFinishedPaintMessage&>(*queued_message.message);
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if (queued_invalidation_message.rect().is_empty() || queued_invalidation_message.rect().contains(invalidation_message.rect())) {
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#ifdef WSEVENTLOOP_DEBUG
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dbgprintf("Swallow WM_ClientFinishedPaint\n");
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#endif
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return;
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}
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}
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}
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}
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if (message->type() == WSMessage::WM_ClientWantsToPaint) {
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auto& invalidation_message = static_cast<WSClientWantsToPaintMessage&>(*message);
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for (auto& queued_message : m_queued_messages) {
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if (receiver == queued_message.receiver && queued_message.message->type() == WSMessage::WM_ClientWantsToPaint) {
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auto& queued_invalidation_message = static_cast<WSClientWantsToPaintMessage&>(*queued_message.message);
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if (queued_invalidation_message.rect().is_empty() || queued_invalidation_message.rect().contains(invalidation_message.rect())) {
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#ifdef WSEVENTLOOP_DEBUG
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dbgprintf("Swallow WM_ClientWantsToPaint\n");
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#endif
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return;
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}
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}
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}
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}
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#endif
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m_queued_messages.append({ receiver, move(message) });
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if (current != m_server_process)
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m_server_process->request_wakeup();
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}
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void WSMessageLoop::Timer::reload()
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{
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struct timeval now;
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current->sys$gettimeofday(&now);
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gettimeofday(&now, nullptr);
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next_fire_time = {
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now.tv_sec + (interval / 1000),
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now.tv_usec + (interval % 1000)
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@ -174,28 +126,22 @@ int WSMessageLoop::stop_timer(int timer_id)
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void WSMessageLoop::wait_for_message()
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{
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fd_set rfds;
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memset(&rfds, 0, sizeof(rfds));
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auto bitmap = Bitmap::wrap((byte*)&rfds, FD_SETSIZE);
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FD_ZERO(&rfds);
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int max_fd = 0;
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auto add_fd_to_set = [&max_fd] (int fd, auto& bitmap) {
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bitmap.set(fd, true);
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auto add_fd_to_set = [&max_fd] (int fd, auto& set) {
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FD_SET(fd, &set);
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if (fd > max_fd)
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max_fd = fd;
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};
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add_fd_to_set(m_keyboard_fd, bitmap);
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add_fd_to_set(m_mouse_fd, bitmap);
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add_fd_to_set(m_server_fd, bitmap);
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add_fd_to_set(m_keyboard_fd, rfds);
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add_fd_to_set(m_mouse_fd, rfds);
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add_fd_to_set(m_server_fd, rfds);
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WSClientConnection::for_each_client([&] (WSClientConnection& client) {
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add_fd_to_set(client.fd(), bitmap);
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add_fd_to_set(client.fd(), rfds);
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});
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Syscall::SC_select_params params;
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params.nfds = max_fd + 1;
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params.readfds = &rfds;
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params.writefds = nullptr;
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params.exceptfds = nullptr;
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struct timeval timeout = { 0, 0 };
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bool had_any_timer = false;
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@ -210,19 +156,13 @@ void WSMessageLoop::wait_for_message()
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timeout = timer.next_fire_time;
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}
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if (m_timers.is_empty() && m_queued_messages.is_empty())
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params.timeout = nullptr;
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else
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params.timeout = &timeout;
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int rc = m_server_process->sys$select(¶ms);
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memory_barrier();
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int rc = select(max_fd + 1, &rfds, nullptr, nullptr, m_timers.is_empty() && m_queued_messages.is_empty() ? nullptr : &timeout);
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if (rc < 0) {
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ASSERT_NOT_REACHED();
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}
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struct timeval now;
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current->sys$gettimeofday(&now);
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gettimeofday(&now, nullptr);
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for (auto& it : m_timers) {
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auto& timer = *it.value;
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if (now.tv_sec > timer.next_fire_time.tv_sec || (now.tv_sec == timer.next_fire_time.tv_sec && now.tv_usec > timer.next_fire_time.tv_usec)) {
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@ -231,30 +171,37 @@ void WSMessageLoop::wait_for_message()
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}
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}
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if (bitmap.get(m_keyboard_fd))
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if (FD_ISSET(m_keyboard_fd, &rfds))
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drain_keyboard();
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if (bitmap.get(m_mouse_fd))
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if (FD_ISSET(m_mouse_fd, &rfds))
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drain_mouse();
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if (bitmap.get(m_server_fd)) {
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if (FD_ISSET(m_server_fd, &rfds)) {
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sockaddr_un address;
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socklen_t address_size = sizeof(address);
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int client_fd = m_server_process->sys$accept(m_server_fd, (sockaddr*)&address, &address_size);
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kprintf("accept() returned fd=%d, address=%s\n", client_fd, address.sun_path);
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int client_fd = accept(m_server_fd, (sockaddr*)&address, &address_size);
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dbgprintf("accept() returned fd=%d, address=%s\n", client_fd, address.sun_path);
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ASSERT(client_fd >= 0);
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new WSClientConnection(client_fd);
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}
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WSClientConnection::for_each_client([&] (WSClientConnection& client) {
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if (bitmap.get(client.fd())) {
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for (;;) {
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WSAPI_ClientMessage message;
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// FIXME: Don't go one message at a time, that's so much context switching, oof.
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ssize_t nread = m_server_process->sys$read(client.fd(), &message, sizeof(WSAPI_ClientMessage));
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if (nread == 0)
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break;
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if (nread < 0) {
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ASSERT_NOT_REACHED();
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}
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on_receive_from_client(client.client_id(), message);
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if (!FD_ISSET(client.fd(), &rfds))
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return;
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unsigned messages_received = 0;
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for (;;) {
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WSAPI_ClientMessage message;
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// FIXME: Don't go one message at a time, that's so much context switching, oof.
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ssize_t nread = read(client.fd(), &message, sizeof(WSAPI_ClientMessage));
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if (nread == 0) {
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if (!messages_received)
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notify_client_disconnected(client.client_id());
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break;
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}
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if (nread < 0) {
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perror("read");
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ASSERT_NOT_REACHED();
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}
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on_receive_from_client(client.client_id(), message);
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++messages_received;
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}
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});
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}
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@ -262,14 +209,17 @@ void WSMessageLoop::wait_for_message()
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void WSMessageLoop::drain_mouse()
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{
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auto& screen = WSScreen::the();
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auto& mouse = PS2MouseDevice::the();
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bool prev_left_button = screen.left_mouse_button_pressed();
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bool prev_right_button = screen.right_mouse_button_pressed();
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int dx = 0;
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int dy = 0;
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while (mouse.can_read(*m_server_process)) {
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bool left_button = prev_left_button;
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bool right_button = prev_right_button;
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for (;;) {
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byte data[3];
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ssize_t nread = mouse.read(*m_server_process, (byte*)data, sizeof(data));
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ssize_t nread = read(m_mouse_fd, data, sizeof(data));
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if (nread == 0)
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break;
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ASSERT(nread == sizeof(data));
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bool left_button = data[0] & 1;
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bool right_button = data[0] & 2;
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@ -290,7 +240,7 @@ void WSMessageLoop::drain_mouse()
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dx += x;
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dy += -y;
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if (left_button != prev_left_button || right_button != prev_right_button || !mouse.can_read(*m_server_process)) {
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if (left_button != prev_left_button || right_button != prev_right_button) {
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prev_left_button = left_button;
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prev_right_button = right_button;
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screen.on_receive_mouse_data(dx, dy, left_button, right_button);
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@ -298,23 +248,26 @@ void WSMessageLoop::drain_mouse()
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dy = 0;
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}
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}
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if (dx || dy) {
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screen.on_receive_mouse_data(dx, dy, left_button, right_button);
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}
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}
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void WSMessageLoop::drain_keyboard()
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{
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auto& screen = WSScreen::the();
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auto& keyboard = Keyboard::the();
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while (keyboard.can_read(*m_server_process)) {
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Keyboard::Event event;
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ssize_t nread = keyboard.read(*m_server_process, (byte*)&event, sizeof(Keyboard::Event));
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ASSERT(nread == sizeof(Keyboard::Event));
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for (;;) {
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KeyEvent event;
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ssize_t nread = read(m_keyboard_fd, (byte*)&event, sizeof(KeyEvent));
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if (nread == 0)
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break;
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ASSERT(nread == sizeof(KeyEvent));
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screen.on_receive_keyboard_data(event);
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}
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}
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void WSMessageLoop::notify_client_died(int client_id)
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void WSMessageLoop::notify_client_disconnected(int client_id)
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{
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LOCKER(m_lock);
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auto* client = WSClientConnection::from_client_id(client_id);
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if (!client)
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return;
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@ -323,12 +276,14 @@ void WSMessageLoop::notify_client_died(int client_id)
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void WSMessageLoop::on_receive_from_client(int client_id, const WSAPI_ClientMessage& message)
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{
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#if 0
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// FIXME: This should not be necessary.. why is this necessary?
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while (!running())
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Scheduler::yield();
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sched_yield();
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#endif
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LOCKER(m_lock);
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WSClientConnection* client = WSClientConnection::ensure_for_client_id(client_id);
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WSClientConnection* client = WSClientConnection::from_client_id(client_id);
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ASSERT(client);
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switch (message.type) {
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case WSAPI_ClientMessage::Type::CreateMenubar:
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post_message(client, make<WSAPICreateMenubarRequest>(client_id));
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@ -383,9 +338,6 @@ void WSMessageLoop::on_receive_from_client(int client_id, const WSAPI_ClientMess
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case WSAPI_ClientMessage::Type::GetWindowBackingStore:
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post_message(client, make<WSAPIGetWindowBackingStoreRequest>(client_id, message.window_id));
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break;
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case WSAPI_ClientMessage::Type::ReleaseWindowBackingStore:
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post_message(client, make<WSAPIReleaseWindowBackingStoreRequest>(client_id, (int)message.backing.backing_store_id));
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break;
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case WSAPI_ClientMessage::Type::SetGlobalCursorTracking:
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post_message(client, make<WSAPISetGlobalCursorTrackingRequest>(client_id, message.window_id, message.value));
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break;
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