int from_backend(void *frontend_handle, int is_stderr,
const char *data, int len)
{
if (is_stderr) {
handle_write(stderr_handle, data, len);
} else {
handle_write(stdout_handle, data, len);
}
return handle_backlog(stdout_handle) + handle_backlog(stderr_handle);
}
template<class T> void AsyncEndpoint<T>::deliver_impl(NMEAmsg_ptr msg){
bool wasEmpty = true;
bool nowFull = false;
{
boost::mutex::scoped_lock lock(message_queueMutex);
wasEmpty = message_queue.empty();
while(message_queue.size()>=message_queue_size){
message_queue.pop_front();
nowFull=true;
}
message_queue.push_back(msg);
}
if(wasEmpty){
boost::system::error_code ec(0,boost::system::system_category());
handle_write(ec);
}
if(!nowFull){
wasFull=false;
}
else if(nowFull && !wasFull){
wasFull=true;
std::ostringstream oss;
oss << "The message queue for "<<getSessionId()<<" was too small, old messages were lost!";
log(oss.str());
}
}
int main()
{
int fd;
struct sockaddr_in addr;
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = inet_addr(SERVER_ADDR);
addr.sin_port = htons(SERVER_PORT);
if( (fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
printf("error to create the socket\n");
exit(-1);
}
if(connect(fd, (struct sockaddr*)&addr, sizeof(addr)) == -1)
{
printf("error to connect to the server\n");
exit(-2);
}
handle_write(fd);
}
void Router::handle_client(int sfd) {
if (clients.find(sfd) == clients.end()) {
DEBUGMSG("Connecting client FID=%d\n", sfd);
clients[sfd] = make_shared<Client>(sfd);
} else if(!clients[sfd]->is_connected()) {
clients.erase(sfd);
clients[sfd] = make_shared<Client>(sfd);
}
SharedClient client = clients[sfd];
while (true) {
SharedMessage msg = client->read();
if (msg) {
received_messages_size+=(msg->get_length());
handle_message(client, msg);
//if we have received too many messages we should send the ones we currently have
if(received_messages_size > MAX_RECEIVED_MESSAGES_SIZE) {
handle_write();
}
} else {
if (!client->is_connected()) {
clients.erase(sfd);
}
return;
}
}
}
void hime_im_client_clear_flags(HIME_client_handle *handle, int flags, int *ret_flag)
{
HIME_req req;
if (!handle)
return;
if (is_special_user)
return;
if (!gen_req(handle, HIME_req_set_flags, &req))
return;
req.flag &= ~flags;
flags_backup = req.flag;
if (handle_write(handle, &req, sizeof(req)) <=0) {
error_proc(handle,"hime_im_client_set_flags error");
}
if (handle_read(handle, ret_flag, sizeof(int)) <= 0) {
error_proc(handle, "cannot read reply str from hime server");
}
}
/**
* This method is called when the user calls echo on our kernel module
* *dev and *attr: not yet required for our functionality
* buffer: the message that is being echoed to our kernel
* size: the size of the message.
* return value: if return != count, then sysfs will call echo with the remainder of the message. (should not be >1024 bytes)
* */
static ssize_t sysfs_store(struct device *dev, struct device_attribute *attr, const char *buffer, size_t count)
{
if ( count > max_data )
{
used_buffer_size = max_data;
printk(KERN_INFO "Input is too large: %d is max, %d was supplied", max_data, count);
}
else
{
used_buffer_size = count;
}
if(strncmp(buffer, "r", 1) == 0)
{
handle_read(&buffer[msg_param_offset]);
}
else if(strncmp(buffer, "w", 1) == 0)
{
handle_write(&buffer[msg_param_offset]);
}
else
{
printk(KERN_INFO "Input is not according to the protocol. Input: %s\n" , buffer);
printk(KERN_INFO "If you wish to read:\n");
printk(KERN_INFO "\"r <amount of registers to read> <physical address of register to start at>\"\n");
printk(KERN_INFO "Example: echo \"r 8 0x40024000\"\n\n");
printk(KERN_INFO "If you wish to write:\n");
printk(KERN_INFO "\"w <physical address of register to write to> <value to write>\"\n");
printk(KERN_INFO "Example: echo \"w 0x40024000 0x222\"\n");
}
return used_buffer_size;
}
static void server_mainloop() {
int64 sock;
/* inlined livesync_init() */
memset( g_peerbuffer_start, 0, sizeof( g_peerbuffer_start ) );
g_peerbuffer_pos = g_peerbuffer_start;
memcpy( g_peerbuffer_pos, &g_tracker_id, sizeof( g_tracker_id ) );
uint32_pack_big( (char*)g_peerbuffer_pos + sizeof( g_tracker_id ), OT_SYNC_PEER);
g_peerbuffer_pos += sizeof( g_tracker_id ) + sizeof( uint32_t);
g_next_packet_time = time(NULL) + LIVESYNC_MAXDELAY;
while(1) {
/* See, if we need to connect to anyone */
if( time(NULL) > g_connection_reconn )
handle_reconnects( );
/* Wait for io events until next approx reconn check time */
io_waituntil2( 30*1000 );
/* Loop over readable sockets */
while( ( sock = io_canread( ) ) != -1 ) {
const void *cookie = io_getcookie( sock );
if( (uintptr_t)cookie == FLAG_SERVERSOCKET )
handle_accept( sock );
else
handle_read( sock );
}
/* Loop over writable sockets */
while( ( sock = io_canwrite( ) ) != -1 )
handle_write( sock );
livesync_ticker( );
}
}
/*
* Called to send data down the serial connection.
*/
static size_t serial_send(Backend *be, const char *buf, size_t len)
{
Serial *serial = container_of(be, Serial, backend);
if (serial->out == NULL)
return 0;
serial->bufsize = handle_write(serial->out, buf, len);
return serial->bufsize;
}
/*
* Called to send data down the serial connection.
*/
static int serial_send(void *handle, char *buf, int len)
{
Serial serial = (Serial) handle;
if (serial->out == NULL)
return 0;
serial->bufsize = handle_write(serial->out, buf, len);
return serial->bufsize;
}
template<class T> void AsyncEndpoint<T>::deliverAnswer_impl(Answer_ptr answer){
bool wasEmpty = true;
{
boost::mutex::scoped_lock lock(message_queueMutex);
wasEmpty = message_queue.empty();
message_queue.push_back(answer);
}
if(wasEmpty){
boost::system::error_code ec(0,boost::system::system_category());
handle_write(ec);
}
}
static int hime_im_client_forward_key_event(HIME_client_handle *handle,
HIME_req_t event_type,
KeySym key, u_int state,
char **rstr)
{
HIME_reply reply;
HIME_req req;
*rstr = NULL;
if (is_special_user) {
return 0;
}
if (!gen_req(handle, event_type, &req))
return 0;
req.keyeve.key = key;
to_hime_endian_4(&req.keyeve.key);
req.keyeve.state = state;
to_hime_endian_4(&req.keyeve.state);
if (handle_write(handle, &req, sizeof(req)) <= 0) {
error_proc(handle, "cannot write to hime server");
return FALSE;
}
bzero(&reply, sizeof(reply));
if (handle_read(handle, &reply, sizeof(reply)) <=0) {
error_proc(handle, "cannot read reply from hime server");
return FALSE;
}
to_hime_endian_4(&reply.datalen);
to_hime_endian_4(&reply.flag);
if (reply.datalen > 0) {
*rstr = (char *)malloc(reply.datalen);
if (handle_read(handle, *rstr, reply.datalen) <= 0) {
free(*rstr); *rstr = NULL;
error_proc(handle, "cannot read reply str from hime server");
return FALSE;
}
}
// dbg("hime_im_client_forward_key_event %x\n", reply.flag);
return reply.flag;
}
int handle_mmio(mmio_info_t *info)
{
struct vcpu *v = current;
const struct mmio_handler *handler = NULL;
handler = find_mmio_handler(v->domain, info->gpa);
if ( !handler )
return 0;
if ( info->dabt.write )
return handle_write(handler, v, info);
else
return handle_read(handler, v, info);
}
void hime_im_client_message(HIME_client_handle *handle, char *message)
{
HIME_req req;
short len;
#if DBG
dbg("hime_im_client_message\n");
#endif
if (!gen_req(handle, HIME_req_message, &req))
return;
if (handle_write(handle, &req, sizeof(req)) <=0) {
error_proc(handle,"hime_im_client_message error 1");
}
len = strlen(message)+1;
if (handle_write(handle, &len, sizeof(len)) <=0) {
error_proc(handle,"hime_im_client_message error 2");
}
if (handle_write(handle, message, len) <=0) {
error_proc(handle,"hime_im_client_message error 2");
}
}
static void handle_client(struct sstate *ss, struct client *c)
{
unsigned char buf[2048];
int len = sizeof(buf);
int cmd;
cmd = net_get(c->c_s, buf, &len);
if (cmd == -1) {
debug(ss, c, 2, "handle_client: net_get()\n");
client_kill(c);
return;
}
/* figure out command */
switch (cmd) {
case NET_SET_CHAN:
handle_set_chan(ss, c, buf, len);
break;
case NET_SET_RATE:
handle_set_rate(ss, c, buf, len);
break;
case NET_GET_MAC:
handle_get_mac(ss, c);
break;
case NET_GET_CHAN:
handle_get_chan(ss, c);
break;
case NET_GET_RATE:
handle_get_rate(ss, c);
break;
case NET_GET_MONITOR:
handle_get_monitor(ss, c);
break;
case NET_WRITE:
handle_write(ss, c, buf, len);
break;
default:
printf("Unknown request %d\n", cmd);
client_kill(c);
break;
}
}
void hime_im_client_focus_out2(HIME_client_handle *handle, char **rstr)
{
HIME_req req;
HIME_reply reply;
if (rstr)
*rstr = NULL;
if (!handle)
return;
if (is_special_user)
return;
#if DBG
dbg("hime_im_client_focus_out2\n");
#endif
handle->flag &= ~FLAG_HIME_client_handle_has_focus;
if (!gen_req(handle, HIME_req_focus_out2, &req))
return;
if (handle_write(handle, &req, sizeof(req)) <=0) {
error_proc(handle,"hime_im_client_focus_out error");
}
bzero(&reply, sizeof(reply));
if (handle_read(handle, &reply, sizeof(reply)) <=0) {
error_proc(handle, "cannot read reply from hime server");
return;
}
to_hime_endian_4(&reply.datalen);
to_hime_endian_4(&reply.flag);
if (reply.datalen > 0) {
*rstr = (char *)malloc(reply.datalen);
if (handle_read(handle, *rstr, reply.datalen) <= 0) {
free(*rstr); *rstr = NULL;
error_proc(handle, "cannot read reply str from hime server");
return;
}
}
// dbg("hime_im_client_forward_key_event %x\n", reply.flag);
return;
}
void process_fd(fd_set *fds)
{
int size;
t_server *server;
if (FD_ISSET(0, fds))
handle_write();
size = (int)list_get_size(server_list) - 1;
while (size >= 0)
{
if ((server = (t_server*)GET_AT(server_list, size)) != NULL)
if (FD_ISSET(server->sockfd, fds))
handle_input(server);
--size;
}
}
void hime_im_client_focus_out(HIME_client_handle *handle)
{
if (!handle)
return;
if (is_special_user)
return;
HIME_req req;
// dbg("hime_im_client_focus_out\n");
handle->flag &= ~FLAG_HIME_client_handle_has_focus;
if (!gen_req(handle, HIME_req_focus_out, &req))
return;
if (handle_write(handle, &req, sizeof(req)) <=0) {
error_proc(handle,"hime_im_client_focus_out error");
}
}
static void server_mainloop( ) {
static time_t ot_last_clean_time;
time_t next_timeout_check = g_now + OT_CLIENT_TIMEOUT_CHECKINTERVAL;
struct iovec *iovector;
int iovec_entries;
for( ; ; ) {
int64 i;
io_wait();
while( ( i = io_canread( ) ) != -1 ) {
const void *cookie = io_getcookie( i );
if( cookie == FLAG_TCP )
handle_accept( i );
else if( cookie == FLAG_UDP )
handle_udp4( i );
else
handle_read( i );
}
while( ( i = mutex_workqueue_popresult( &iovec_entries, &iovector ) ) != -1 )
http_sendiovecdata( i, iovec_entries, iovector );
while( ( i = io_canwrite( ) ) != -1 )
handle_write( i );
if( g_now > next_timeout_check ) {
while( ( i = io_timeouted() ) != -1 )
handle_dead( i );
next_timeout_check = g_now + OT_CLIENT_TIMEOUT_CHECKINTERVAL;
}
/* See if we need to move our pools */
if( NOW != ot_last_clean_time ) {
ot_last_clean_time = NOW;
clean_all_torrents();
}
/* Enforce setting the clock */
signal_handler( SIGALRM );
}
}
void hime_im_client_reset(HIME_client_handle *handle)
{
if (!handle)
return;
if (is_special_user)
return;
HIME_req req;
#if DBG
dbg("hime_im_client_reset\n");
#endif
if (!gen_req(handle, HIME_req_reset, &req))
return;
if (handle_write(handle, &req, sizeof(req)) <=0) {
error_proc(handle,"hime_im_client_reset error");
}
}
int app::dispatch(const app_hd * msg){
if(msg->type == tcp_type){
switch(msg->event){
case ev_sys_recv:
on_recv(msg->u.tcp.n, msg->content, msg->length);
break;
case ev_sys_close:
on_close(msg->u.tcp.n, *((int*)msg->content));
delete msg->u.tcp.n;
break;
case ev_sys_accept:
on_accept(msg->u.tcp.n);
break;
case ev_sys_connect_ok:
on_connect(msg->u.tcp.n);
break;
case ev_sys_connect_fail:
on_connect(msg->u.tcp.n);
delete msg->u.tcp.n;
break;
case ev_sys_write:
handle_write(msg->u.tcp.n);
break;
}
}
else if(msg->type == timer_type){
on_timer(msg->event, msg->u.timer.interval, msg->u.timer.ptr);
}
else if(msg->type == app_type){
on_app(msg->event, msg->content, msg->length);
}
else{
error_log("msg from unknown app_name(%s)\n", m_name);
}
return 0;
}
void message_session::do_send(boost::shared_ptr<zmq::message_t> message_ptr)
{
std::cout << (char *)message_ptr->data() << std::endl;
message msg;
msg.body_length(message_ptr->size());
memcpy(msg.body(), message_ptr->data(), message_ptr->size());
msg.encode_header();
write_msgs_.push_back(msg);
handle_write(boost::system::error_code());
//¶ÁÇ°ÏÈÇåÁã
read_msg_.bzero();
boost::asio::async_read(socket_,
boost::asio::buffer(read_msg_.data(), message::header_length),
boost::bind(&message_session::handle_read_header, shared_from_this(),
boost::asio::placeholders::error));
}
template<class T> void AsyncEndpoint<T>::start()
{
registerEndpoint();
if(boost::shared_ptr<AsyncEndpoint<T> > activated = activateSession(this->shared_from_this())){
//Transfer session object over to old session
activated->unregisterEndpoint();
{
boost::mutex::scoped_lock lock(message_queueMutex);
message_queue = std::deque<Message_ptr>(activated->message_queue);
}
log("Session reactivated");
}
boost::system::error_code ec(0,boost::system::system_category());
handle_write(ec);
isActive=true;
aostream->async_read_some(boost::asio::buffer(data_, max_length),
boost::bind(&AsyncEndpoint::handle_read, this,
boost::asio::placeholders::error,
boost::asio::placeholders::bytes_transferred));
}// NMEA-Protocol-Server
static void handle_read(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
GPR_ASSERT(error == GRPC_ERROR_NONE);
state.incoming_data_length += state.temp_incoming_buffer.length;
size_t i;
for (i = 0; i < state.temp_incoming_buffer.count; i++) {
char *dump = gpr_dump_slice(state.temp_incoming_buffer.slices[i],
GPR_DUMP_HEX | GPR_DUMP_ASCII);
gpr_log(GPR_DEBUG, "Server received: %s", dump);
gpr_free(dump);
}
gpr_log(GPR_DEBUG, "got %" PRIuPTR " bytes, expected %" PRIuPTR " bytes",
state.incoming_data_length, EXPECTED_INCOMING_DATA_LENGTH);
if (state.incoming_data_length > EXPECTED_INCOMING_DATA_LENGTH) {
handle_write(exec_ctx);
} else {
grpc_endpoint_read(exec_ctx, state.tcp, &state.temp_incoming_buffer,
&on_read);
}
}
void hime_im_client_focus_in(HIME_client_handle *handle)
{
if (!handle)
return;
if (is_special_user)
return;
HIME_req req;
// dbg("hime_im_client_focus_in\n");
handle->flag |= FLAG_HIME_client_handle_has_focus;
if (!gen_req(handle, HIME_req_focus_in, &req))
return;
if (handle_write(handle, &req, sizeof(req)) <=0) {
error_proc(handle,"hime_im_client_focus_in error");
}
hime_im_client_set_cursor_location(handle, handle->spot_location.x,
handle->spot_location.y);
}
void check_reqs() {
while (reqs) {
int val = reqs->status;
if (val != BUSY) {
enum atypes type = (reqs->type);
reqs->type = done;
switch (type) {
case aread:
handle_read(reqs);
break;
case awrite:
handle_write(reqs);
break;
#ifdef F_ASYNC_GETDIR
case agetdir:
handle_getdir(reqs);
break;
#endif
#ifdef F_ASYNC_DB_EXEC
case adbexec:
handle_db_exec(reqs);
break;
#endif
case done:
//must have had an error while handling it before.
break;
default:
fatal("unknown async type\n");
}
struct request *here = reqs;
reqs = reqs->next;
if(!reqs)
lastreq = reqs;
free_funp(here->fun->f.fp);
free_cb(here->fun);
free_req(here);
} else
return;
}
}
void handle_syscall(syscall_req_t* req, syscall_rsp_t* rsp)
{
switch (req->header.id) {
case OPEN_ID:
handle_open(req, rsp);
break;
case CLOSE_ID:
handle_close(req, rsp);
break;
case READ_ID:
handle_read(req, rsp);
break;
case WRITE_ID:
handle_write(req, rsp);
break;
case LINK_ID:
handle_link(req, rsp);
break;
case UNLINK_ID:
handle_unlink(req, rsp);
break;
case LSEEK_ID:
handle_lseek(req, rsp);
break;
case FSTAT_ID:
handle_fstat(req, rsp);
break;
case ISATTY_ID:
handle_isatty(req, rsp);
break;
case STAT_ID:
handle_stat(req, rsp);
break;
default:
error(-1, "Illegal syscall, should never be here...");
}
rsp->header.return_errno = errno;
}
int main()
{
pid_t pid;
int fd;
int i;
for(i = 0; i < 20; ++i)
{
if( (pid = fork()) == 0)
{
fd = connect_server();
handle_write(fd);
}
}
while(wait(NULL) > 0)
;
if(errno != ECHILD)
exit(-5);
exit(0);
}
void hime_im_client_set_cursor_location(HIME_client_handle *handle, int x, int y)
{
if (!handle)
return;
if (is_special_user)
return;
// dbg("hime_im_client_set_cursor_location %d %d,%d\n", handle->flag, x, y);
HIME_req req;
handle->spot_location.x = x;
handle->spot_location.y = y;
if (!BITON(handle->flag, FLAG_HIME_client_handle_has_focus))
return;
if (!gen_req(handle, HIME_req_set_cursor_location, &req))
return;
if (handle_write(handle, &req, sizeof(req)) <=0) {
error_proc(handle,"hime_im_client_set_cursor_location error");
}
}
static void select_process_event(event_context_t *ec){
struct timeval tv={timeout,0};
fd_set read_set;
fd_set write_set;
intptr_t max=prepare_fd_set(ec,&read_set,&write_set);
intptr_t ret = select(max+1, &read_set, &write_set, NULL, &tv);
if(ret==-1){
my_log(ERROR,"select event error\n");
return;
}else if(ret==0){
return;
}
event_t *events=(event_t *)ec->events;
intptr_t i=0;
for(;i<max_event_count;i++){
intptr_t fd=events[i].fd;
if(fd==0){
continue;
}
if(FD_ISSET(fd,&read_set)){
if(fd==ec->listen_fd){
accept_connection();
}else if(fd==ec->worker_fd){
handle_notify(fd,ec);
}else{
handle_read(events[i].data);
}
}
if(FD_ISSET(fd,&write_set)){
intptr_t result=handle_write(events[i].data);
if(result==OK){
event_operation.del_event(fd,WRITE,ec);
}
}
}
}
/*
* System call handler
*
* retrieves system call number from user space
* and invokes the requested method
*/
static void
syscall_handler (struct intr_frame *f)
{
/* retrieve system call number
and switch to corresponding method */
unsigned int syscall_number = *((unsigned int*) syscall_get_kernel_address(f->esp));
switch(syscall_number)
{
/* process system calls */
case SYS_HALT:
handle_halt(f);
break;
case SYS_EXIT:
handle_exit(f);
break;
case SYS_EXEC:
handle_exec(f);
break;
case SYS_WAIT:
handle_wait(f);
break;
/* file system calls */
case SYS_CREATE:
handle_create(f);
break;
case SYS_REMOVE:
handle_remove(f);
break;
case SYS_OPEN:
handle_open(f);
break;
case SYS_FILESIZE:
handle_filesize(f);
break;
case SYS_READ:
handle_read(f);
break;
case SYS_WRITE:
handle_write(f);
break;
case SYS_SEEK:
handle_seek(f);
break;
case SYS_TELL:
handle_tell(f);
break;
case SYS_CLOSE:
handle_close(f);
break;
case SYS_CHDIR:
handle_chdir(f);
break;
case SYS_MKDIR:
handle_mkdir(f);
break;
case SYS_READDIR:
handle_readdir(f);
break;
case SYS_ISDIR:
handle_isdir(f);
break;
case SYS_INUMBER:
handle_inumber(f);
break;
default: /* SYSCALL_ERROR: */
handle_no_such_syscall(f);
break;
}
}