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socket.c
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socket.c
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/************************************************
socket.c -
$Author$
$Date$
created at: Thu Mar 31 12:21:29 JST 1994
************************************************/
#include "ruby.h"
#include "io.h"
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <errno.h>
#ifdef HAVE_SYS_UN_H
#include <sys/un.h>
#endif
#if defined(THREAD) && defined(HAVE_FCNTL)
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#include <sys/types.h>
#include <sys/time.h>
#include <fcntl.h>
#endif
#ifndef EWOULDBLOCK
#define EWOULDBLOCK EAGAIN
#endif
extern VALUE cIO;
extern VALUE cInteger;
VALUE cBasicSocket;
VALUE cTCPsocket;
VALUE cTCPserver;
#ifdef AF_UNIX
VALUE cUNIXsocket;
VALUE cUNIXserver;
#endif
VALUE cSocket;
extern VALUE eException;
static VALUE eSocket;
#ifdef SOCKS
VALUE cSOCKSsocket;
void SOCKSinit();
int Rconnect();
#endif
FILE *rb_fdopen();
char *strdup();
#define INET_CLIENT 0
#define INET_SERVER 1
#define INET_SOCKS 2
#ifdef NT
static void
sock_finalize(fptr)
OpenFile *fptr;
{
SOCKET s = fileno(fptr->f);
free(fptr->f);
free(fptr->f2);
closesocket(s);
}
#endif
static VALUE
sock_new(class, fd)
VALUE class;
int fd;
{
OpenFile *fp;
NEWOBJ(sock, struct RFile);
OBJSETUP(sock, class, T_FILE);
MakeOpenFile(sock, fp);
fp->f = rb_fdopen(fd, "r");
#ifdef NT
fp->finalize = sock_finalize;
#else
setbuf(fp->f, NULL);
#endif
fp->f2 = rb_fdopen(fd, "w");
fp->mode = FMODE_READWRITE;
io_unbuffered(fp);
return (VALUE)sock;
}
static VALUE
bsock_shutdown(argc, argv, sock)
int argc;
VALUE *argv;
VALUE sock;
{
VALUE howto;
int how;
OpenFile *fptr;
rb_scan_args(argc, argv, "01", &howto);
if (howto == Qnil)
how = 2;
else {
how = NUM2INT(howto);
if (how < 0 && how > 2) how = 2;
}
GetOpenFile(sock, fptr);
if (shutdown(fileno(fptr->f), how) == -1)
rb_sys_fail(0);
return INT2FIX(0);
}
static VALUE
bsock_setsockopt(sock, lev, optname, val)
VALUE sock, lev, optname;
struct RString *val;
{
int level, option;
OpenFile *fptr;
int i;
char *v;
int vlen;
rb_secure(2);
level = NUM2INT(lev);
option = NUM2INT(optname);
switch (TYPE(val)) {
case T_FIXNUM:
i = FIX2INT(val);
goto numval;
case T_FALSE:
i = 0;
goto numval;
case T_TRUE:
i = 1;
numval:
v = (char*)&i; vlen = sizeof(i);
break;
default:
Check_Type(val, T_STRING);
v = val->ptr; vlen = val->len;
}
GetOpenFile(sock, fptr);
if (setsockopt(fileno(fptr->f), level, option, v, vlen) < 0)
rb_sys_fail(fptr->path);
return INT2FIX(0);
}
static VALUE
bsock_getsockopt(sock, lev, optname)
VALUE sock, lev, optname;
{
int level, option, len;
char *buf;
OpenFile *fptr;
level = NUM2INT(lev);
option = NUM2INT(optname);
len = 256;
buf = ALLOCA_N(char,len);
GetOpenFile(sock, fptr);
if (getsockopt(fileno(fptr->f), level, option, buf, &len) < 0)
rb_sys_fail(fptr->path);
return str_new(buf, len);
}
static VALUE
bsock_getsockname(sock)
VALUE sock;
{
char buf[1024];
int len = sizeof buf;
OpenFile *fptr;
GetOpenFile(sock, fptr);
if (getsockname(fileno(fptr->f), (struct sockaddr*)buf, &len) < 0)
rb_sys_fail("getsockname(2)");
return str_new(buf, len);
}
static VALUE
bsock_getpeername(sock)
VALUE sock;
{
char buf[1024];
int len = sizeof buf;
OpenFile *fptr;
GetOpenFile(sock, fptr);
if (getpeername(fileno(fptr->f), (struct sockaddr*)buf, &len) < 0)
rb_sys_fail("getpeername(2)");
return str_new(buf, len);
}
static VALUE
bsock_send(argc, argv, sock)
int argc;
VALUE *argv;
VALUE sock;
{
struct RString *msg, *to;
VALUE flags;
OpenFile *fptr;
FILE *f;
int fd, n;
rb_secure(4);
rb_scan_args(argc, argv, "21", &msg, &flags, &to);
Check_Type(msg, T_STRING);
GetOpenFile(sock, fptr);
f = fptr->f2?fptr->f2:fptr->f;
fd = fileno(f);
retry:
#ifdef THREAD
thread_fd_writable(fd);
#endif
if (RTEST(to)) {
Check_Type(to, T_STRING);
n = sendto(fd, msg->ptr, msg->len, NUM2INT(flags),
(struct sockaddr*)to->ptr, to->len);
}
else {
n = send(fd, msg->ptr, msg->len, NUM2INT(flags));
}
if (n < 0) {
switch (errno) {
case EINTR:
case EWOULDBLOCK:
#if EAGAIN != EWOULDBLOCK
case EAGAIN:
#endif
#ifdef THREAD
thread_schedule();
#endif
goto retry;
}
rb_sys_fail("send(2)");
}
return INT2FIX(n);
}
static VALUE tcpaddr _((struct sockaddr_in*));
#ifdef HAVE_SYS_UN_H
static VALUE unixaddr _((struct sockaddr_un*));
#endif
static VALUE
s_recv(sock, argc, argv, from)
VALUE sock;
int argc;
VALUE *argv;
int from; /* 0 - recv,
1 - TCPsocket#recvfrom,
2 - UNIXsocket#recvfrom,
3 - Socket#recvfrom */
{
OpenFile *fptr;
FILE f;
struct RString *str;
char buf[1024];
int fd, alen = sizeof buf;
VALUE len, flg;
int flags;
rb_scan_args(argc, argv, "11", &len, &flg);
if (flg == Qnil) flags = 0;
else flags = NUM2INT(flg);
str = (struct RString*)str_new(0, NUM2INT(len));
GetOpenFile(sock, fptr);
fd = fileno(fptr->f);
#ifdef THREAD
thread_wait_fd(fd);
#endif
TRAP_BEG;
retry:
str->len = recvfrom(fd, str->ptr, str->len, flags,
(struct sockaddr*)buf, &alen);
TRAP_END;
if (str->len < 0) {
switch (errno) {
case EINTR:
case EWOULDBLOCK:
#if EAGAIN != EWOULDBLOCK
case EAGAIN:
#endif
#ifdef THREAD
thread_schedule();
#endif
goto retry;
}
rb_sys_fail("recvfrom(2)");
}
str_taint(str);
switch (from) {
case 0:
return (VALUE)str;
case 1:
if (alen != sizeof(struct sockaddr_in)) {
TypeError("sockaddr size differs - should not happen");
}
return assoc_new(str, tcpaddr((struct sockaddr_in *)buf));
#ifdef HAVE_SYS_UN_H
case 2:
if (alen != sizeof(struct sockaddr_un)) {
TypeError("sockaddr size differs - should not happen");
}
return assoc_new(str, unixaddr((struct sockaddr_un *)buf));
#endif
case 3:
return assoc_new(str, str_new(buf, alen));
}
}
static VALUE
bsock_recv(argc, argv, sock)
int argc;
VALUE *argv;
VALUE sock;
{
return s_recv(sock, argc, argv, 0);
}
#if defined(THREAD) && defined(HAVE_FCNTL)
static int
thread_connect(fd, sockaddr, len, type)
int fd;
struct sockaddr *sockaddr;
int len;
int type;
{
int status;
int mode;
fd_set fds;
mode = fcntl(fd, F_GETFL, 0);
#ifdef O_NDELAY
# define NONBLOCKING O_NDELAY
#else
#ifdef O_NBIO
# define NONBLOCKING O_NBIO
#else
# define NONBLOCKING O_NONBLOCK
#endif
#endif
fcntl(fd, F_SETFL, mode|NONBLOCKING);
for (;;) {
#ifdef SOCKS
if (type == INET_SOCKS) {
status = Rconnect(fd, sockaddr, len);
}
else
#endif
{
status = connect(fd, sockaddr, len);
}
if (status < 0) {
switch (errno) {
#ifdef EINPROGRESS
case EINPROGRESS:
#ifdef EAGAIN
case EAGAIN:
#endif
FD_ZERO(&fds);
FD_SET(fd, &fds);
thread_select(fd+1, 0, &fds, 0, 0, 0);
continue;
#endif
#ifdef EISCONN
case EISCONN:
#endif
#ifdef EALREADY
case EALREADY:
#endif
#if defined(EISCONN) || defined(EALREADY)
status = 0;
errno = 0;
break;
#endif
}
}
mode &= ~NONBLOCKING;
fcntl(fd, F_SETFL, mode);
return status;
}
}
#endif
static VALUE
open_inet(class, h, serv, type)
VALUE class, h, serv;
int type;
{
char *host;
struct hostent *hostent, _hostent;
struct servent *servent, _servent;
struct protoent *protoent;
struct sockaddr_in sockaddr;
int fd, status;
int hostaddr, hostaddrPtr[2];
int servport;
char *syscall;
VALUE sock;
if (h) {
Check_SafeStr(h);
host = RSTRING(h)->ptr;
hostent = gethostbyname(host);
if (hostent == NULL) {
hostaddr = inet_addr(host);
if (hostaddr == -1) {
if (type == INET_SERVER && !strlen(host))
hostaddr = INADDR_ANY;
else {
#ifdef HAVE_HSTRERROR
extern int h_errno;
Raise(eSocket, (char *)hstrerror(h_errno));
#else
Raise(eSocket, "host not found");
#endif
}
}
_hostent.h_addr_list = (char **)hostaddrPtr;
_hostent.h_addr_list[0] = (char *)&hostaddr;
_hostent.h_addr_list[1] = NULL;
_hostent.h_length = sizeof(hostaddr);
_hostent.h_addrtype = AF_INET;
hostent = &_hostent;
}
}
servent = NULL;
if (FIXNUM_P(serv)) {
servport = FIX2UINT(serv);
goto setup_servent;
}
Check_Type(serv, T_STRING);
servent = getservbyname(RSTRING(serv)->ptr, "tcp");
if (servent == NULL) {
servport = strtoul(RSTRING(serv)->ptr, 0, 0);
if (servport == -1) {
Raise(eSocket, "no such servce %s", RSTRING(serv)->ptr);
}
setup_servent:
_servent.s_port = htons(servport);
_servent.s_proto = "tcp";
servent = &_servent;
}
protoent = getprotobyname(servent->s_proto);
if (protoent == NULL) {
Raise(eSocket, "no such proto %s", servent->s_proto);
}
fd = socket(PF_INET, SOCK_STREAM, protoent->p_proto);
memset(&sockaddr, 0, sizeof(sockaddr));
sockaddr.sin_family = AF_INET;
if (h) {
memcpy((char *)&(sockaddr.sin_addr.s_addr),
(char *) hostent->h_addr_list[0],
(size_t) hostent->h_length);
}
else {
sockaddr.sin_addr.s_addr = INADDR_ANY;
}
sockaddr.sin_port = servent->s_port;
if (type == INET_SERVER) {
status = 1;
setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,(char*)&status,sizeof(status));
status = bind(fd, (struct sockaddr*)&sockaddr, sizeof(sockaddr));
syscall = "bind(2)";
}
else {
#if defined(THREAD) && defined(HAVE_FCNTL)
status = thread_connect(fd, (struct sockaddr*)&sockaddr,
sizeof(sockaddr), type);
#else
#ifdef SOCKS
if (type == INET_SOCKS) {
status = Rconnect(fd, &sockaddr, sizeof(sockaddr));
}
else
#endif
{
status = connect(fd, (struct sockaddr*)&sockaddr, sizeof(sockaddr));
}
#endif
syscall = "connect(2)";
}
if (status < 0) {
close (fd);
rb_sys_fail(syscall);
}
if (type == INET_SERVER) listen(fd, 5);
/* create new instance */
sock = sock_new(class, fd);
return sock;
}
static VALUE
tcp_s_open(class, host, serv)
VALUE class, host, serv;
{
Check_SafeStr(host);
return open_inet(class, host, serv, INET_CLIENT);
}
#ifdef SOCKS
static VALUE
socks_s_open(class, host, serv)
VALUE class, host, serv;
{
static init = 0;
if (init == 0) {
SOCKSinit("ruby");
init = 1;
}
Check_SafeStr(host);
return open_inet(class, host, serv, INET_SOCKS);
}
#endif
static VALUE
tcp_svr_s_open(argc, argv, class)
int argc;
VALUE *argv;
VALUE class;
{
VALUE arg1, arg2;
if (rb_scan_args(argc, argv, "11", &arg1, &arg2) == 2)
return open_inet(class, arg1, arg2, INET_SERVER);
else
return open_inet(class, 0, arg1, INET_SERVER);
}
static VALUE
s_accept(class, fd, sockaddr, len)
VALUE class;
int fd;
struct sockaddr *sockaddr;
int *len;
{
int fd2;
retry:
#ifdef THREAD
thread_wait_fd(fd);
#endif
TRAP_BEG;
fd2 = accept(fd, sockaddr, len);
TRAP_END;
if (fd2 < 0) {
switch (errno) {
case EINTR:
case EWOULDBLOCK:
#if EAGAIN != EWOULDBLOCK
case EAGAIN:
#endif
#ifdef THREAD
thread_schedule();
#endif
goto retry;
}
rb_sys_fail(0);
}
return sock_new(class, fd2);
}
static VALUE
tcp_accept(sock)
VALUE sock;
{
OpenFile *fptr;
struct sockaddr_in from;
int fromlen;
GetOpenFile(sock, fptr);
fromlen = sizeof(struct sockaddr_in);
return s_accept(cTCPsocket, fileno(fptr->f),
(struct sockaddr*)&from, &fromlen);
}
#ifdef HAVE_SYS_UN_H
static VALUE
open_unix(class, path, server)
VALUE class;
struct RString *path;
int server;
{
struct sockaddr_un sockaddr;
int fd, status;
VALUE sock;
OpenFile *fptr;
Check_SafeStr(path);
fd = socket(PF_UNIX, SOCK_STREAM, 0);
if (fd < 0) rb_sys_fail("socket(2)");
memset(&sockaddr, 0, sizeof(sockaddr));
sockaddr.sun_family = AF_UNIX;
strncpy(sockaddr.sun_path, path->ptr, sizeof(sockaddr.sun_path)-1);
sockaddr.sun_path[sizeof(sockaddr.sun_path)-1] = '\0';
if (server) {
status = bind(fd, (struct sockaddr*)&sockaddr, sizeof(sockaddr));
}
else {
status = connect(fd, (struct sockaddr*)&sockaddr, sizeof(sockaddr));
}
if (status < 0) {
close(fd);
rb_sys_fail(sockaddr.sun_path);
}
if (server) listen(fd, 5);
sock = sock_new(class, fd);
GetOpenFile(sock, fptr);
fptr->path = strdup(path->ptr);
return sock;
}
#endif
static void
setipaddr(name, addr)
char *name;
struct sockaddr_in *addr;
{
int d1, d2, d3, d4;
char ch;
struct hostent *hp;
long x;
if (name[0] == 0) {
addr->sin_addr.s_addr = INADDR_ANY;
}
else if (name[0] == '<' && strcmp(name, "<broadcast>") == 0) {
addr->sin_addr.s_addr = INADDR_BROADCAST;
}
else if (sscanf(name, "%d.%d.%d.%d%c", &d1, &d2, &d3, &d4, &ch) == 4 &&
0 <= d1 && d1 <= 255 && 0 <= d2 && d2 <= 255 &&
0 <= d3 && d3 <= 255 && 0 <= d4 && d4 <= 255) {
addr->sin_addr.s_addr = htonl(
((long) d1 << 24) | ((long) d2 << 16) |
((long) d3 << 8) | ((long) d4 << 0));
}
else {
hp = gethostbyname(name);
if (!hp) {
#ifdef HAVE_HSTRERROR
extern int h_errno;
Raise(eSocket, (char *)hstrerror(h_errno));
#else
Raise(eSocket, "host not found");
#endif
}
memcpy((char *) &addr->sin_addr, hp->h_addr, hp->h_length);
}
}
static VALUE
mkipaddr(x)
unsigned long x;
{
char buf[16];
x = ntohl(x);
sprintf(buf, "%d.%d.%d.%d",
(int) (x>>24) & 0xff, (int) (x>>16) & 0xff,
(int) (x>> 8) & 0xff, (int) (x>> 0) & 0xff);
return str_new2(buf);
}
static VALUE
tcpaddr(sockaddr)
struct sockaddr_in *sockaddr;
{
VALUE family, port, addr1, addr2;
VALUE ary;
struct hostent *hostent;
family = str_new2("AF_INET");
hostent = gethostbyaddr((char*)&sockaddr->sin_addr.s_addr,
sizeof(sockaddr->sin_addr),
AF_INET);
addr1 = 0;
if (hostent) {
addr1 = str_new2(hostent->h_name);
}
addr2 = mkipaddr(sockaddr->sin_addr.s_addr);
if (!addr1) addr1 = addr2;
port = INT2FIX(ntohs(sockaddr->sin_port));
ary = ary_new3(4, family, port, addr1, addr2);
return ary;
}
static VALUE
tcp_addr(sock)
VALUE sock;
{
OpenFile *fptr;
struct sockaddr_in addr;
int len = sizeof addr;
GetOpenFile(sock, fptr);
if (getsockname(fileno(fptr->f), (struct sockaddr*)&addr, &len) < 0)
rb_sys_fail("getsockname(2)");
return tcpaddr(&addr);
}
static VALUE
tcp_peeraddr(sock)
VALUE sock;
{
OpenFile *fptr;
struct sockaddr_in addr;
int len = sizeof addr;
GetOpenFile(sock, fptr);
if (getpeername(fileno(fptr->f), (struct sockaddr*)&addr, &len) < 0)
rb_sys_fail("getpeername(2)");
return tcpaddr(&addr);
}
static VALUE
tcp_recvfrom(argc, argv, sock)
int argc;
VALUE *argv;
VALUE sock;
{
return s_recv(sock, argc, argv, 1);
}
static VALUE
tcp_s_getaddress(obj, host)
VALUE obj, host;
{
struct sockaddr_in addr;
struct hostent *h;
if (obj_is_kind_of(host, cInteger)) {
int i = NUM2INT(host);
addr.sin_addr.s_addr = htonl(i);
}
else {
Check_Type(host, T_STRING);
setipaddr(RSTRING(host)->ptr, &addr);
}
return mkipaddr(addr.sin_addr.s_addr);
}
#ifdef HAVE_SYS_UN_H
static VALUE
unix_s_sock_open(sock, path)
VALUE sock, path;
{
return open_unix(sock, path, 0);
}
static VALUE
unix_path(sock)
VALUE sock;
{
OpenFile *fptr;
GetOpenFile(sock, fptr);
if (fptr->path == 0) {
struct sockaddr_un addr;
int len = sizeof(addr);
if (getsockname(fileno(fptr->f), (struct sockaddr*)&addr, &len) < 0)
rb_sys_fail(0);
fptr->path = strdup(addr.sun_path);
}
return str_new2(fptr->path);
}
static VALUE
unix_svr_s_open(class, path)
VALUE class, path;
{
return open_unix(class, path, 1);
}
static VALUE
unix_recvfrom(argc, argv, sock)
int argc;
VALUE *argv;
VALUE sock;
{
return s_recv(sock, argc, argv, 2);
}
static VALUE
unix_accept(sock)
VALUE sock;
{
OpenFile *fptr;
struct sockaddr_un from;
int fromlen;
GetOpenFile(sock, fptr);
fromlen = sizeof(struct sockaddr_un);
return s_accept(cUNIXsocket, fileno(fptr->f),
(struct sockaddr*)&from, &fromlen);
}
static VALUE
unixaddr(sockaddr)
struct sockaddr_un *sockaddr;
{
return assoc_new(str_new2("AF_UNIX"),str_new2(sockaddr->sun_path));
}
static VALUE
unix_addr(sock)
VALUE sock;
{
OpenFile *fptr;
struct sockaddr_un addr;
int len = sizeof addr;
GetOpenFile(sock, fptr);
if (getsockname(fileno(fptr->f), (struct sockaddr*)&addr, &len) < 0)
rb_sys_fail("getsockname(2)");
return unixaddr(&addr);
}
static VALUE
unix_peeraddr(sock)
VALUE sock;
{
OpenFile *fptr;
struct sockaddr_un addr;
int len = sizeof addr;
GetOpenFile(sock, fptr);
if (getpeername(fileno(fptr->f), (struct sockaddr*)&addr, &len) < 0)
rb_sys_fail("getsockname(2)");
return unixaddr(&addr);
}
#endif
static void
setup_domain_and_type(domain, dv, type, tv)
VALUE domain, type;
int *dv, *tv;
{
char *ptr;
if (TYPE(domain) == T_STRING) {
ptr = RSTRING(domain)->ptr;
if (strcmp(ptr, "PF_INET") == 0)
*dv = PF_INET;
#ifdef PF_UNIX
else if (strcmp(ptr, "PF_UNIX") == 0)
*dv = PF_UNIX;
#endif
#ifdef PF_IMPLINK
else if (strcmp(ptr, "PF_IMPLINK") == 0)
*dv = PF_IMPLINK;
#endif
#ifdef PF_AX25
else if (strcmp(ptr, "PF_AX25") == 0)
*dv = PF_AX25;
#endif
#ifdef PF_IPX
else if (strcmp(ptr, "PF_IPX") == 0)
*dv = PF_IPX;
#endif
else
Raise(eSocket, "Unknown socket domain %s", ptr);
}
else {
*dv = NUM2INT(domain);
}
if (TYPE(type) == T_STRING) {
ptr = RSTRING(type)->ptr;
if (strcmp(ptr, "SOCK_STREAM") == 0)
*tv = SOCK_STREAM;
else if (strcmp(ptr, "SOCK_DGRAM") == 0)
*tv = SOCK_DGRAM;
#ifdef SOCK_RAW
else if (strcmp(ptr, "SOCK_RAW") == 0)
*tv = SOCK_RAW;
#endif
#ifdef SOCK_SEQPACKET
else if (strcmp(ptr, "SOCK_SEQPACKET") == 0)
*tv = SOCK_SEQPACKET;
#endif
#ifdef SOCK_RDM
else if (strcmp(ptr, "SOCK_RDM") == 0)
*tv = SOCK_RDM;
#endif
#ifdef SOCK_PACKET
else if (strcmp(ptr, "SOCK_PACKET") == 0)
*tv = SOCK_PACKET;
#endif
else
Raise(eSocket, "Unknown socket type %s", ptr);
}
else {
*tv = NUM2INT(type);
}
}
static VALUE
sock_s_open(class, domain, type, protocol)
VALUE class, domain, type, protocol;
{
int fd;
int d, t;
setup_domain_and_type(domain, &d, type, &t);
fd = socket(d, t, NUM2INT(protocol));
if (fd < 0) rb_sys_fail("socket(2)");
return sock_new(class, fd);
}
static VALUE
sock_s_for_fd(class, fd)
VALUE class, fd;
{
return sock_new(class, NUM2INT(fd));
}
static VALUE
sock_s_socketpair(class, domain, type, protocol)
VALUE class, domain, type, protocol;
{
#if !defined(__CYGWIN32__) && !defined(NT)
int fd;
int d, t, sp[2];
setup_domain_and_type(domain, &d, type, &t);
if (socketpair(d, t, NUM2INT(protocol), sp) < 0)
rb_sys_fail("socketpair(2)");
return assoc_new(sock_new(class, sp[0]), sock_new(class, sp[1]));
#else
rb_notimplement();
#endif
}
static VALUE
sock_connect(sock, addr)
VALUE sock;
struct RString *addr;
{
OpenFile *fptr;
Check_Type(addr, T_STRING);
str_modify(addr);
GetOpenFile(sock, fptr);
retry:
if (connect(fileno(fptr->f), (struct sockaddr*)addr->ptr, addr->len) < 0) {
switch (errno) {
case EINTR:
case EWOULDBLOCK:
#if EAGAIN != EWOULDBLOCK
case EAGAIN:
#endif
#ifdef THREAD
thread_schedule();
#endif