/*-------------------------------------------------------------------------*\
* Waits for a set of sockets until a condition is met or timeout.
\*-------------------------------------------------------------------------*/
static int global_select(lua_State *L) {
int rtab, wtab, itab, ret, ndirty;
t_socket max_fd;
fd_set rset, wset;
t_timeout tm;
double t = luaL_optnumber(L, 3, -1);
FD_ZERO(&rset); FD_ZERO(&wset);
lua_settop(L, 3);
lua_newtable(L); itab = lua_gettop(L);
lua_newtable(L); rtab = lua_gettop(L);
lua_newtable(L); wtab = lua_gettop(L);
max_fd = collect_fd(L, 1, SOCKET_INVALID, itab, &rset);
ndirty = check_dirty(L, 1, rtab, &rset);
t = ndirty > 0? 0.0: t;
timeout_init(&tm, t, -1);
timeout_markstart(&tm);
max_fd = collect_fd(L, 2, max_fd, itab, &wset);
ret = socket_select(max_fd+1, &rset, &wset, NULL, &tm);
if (ret > 0 || ndirty > 0) {
return_fd(L, &rset, max_fd+1, itab, rtab, ndirty);
return_fd(L, &wset, max_fd+1, itab, wtab, 0);
make_assoc(L, rtab);
make_assoc(L, wtab);
return 2;
} else if (ret == 0) {
lua_pushstring(L, "timeout");
return 3;
} else {
lua_pushstring(L, "error");
return 3;
}
}
int
close(Process *p, FileDescriptor fd) {
FileHandle *handle = p->fd_table[fd];
p->fd_table[fd] = NULL;
return_fd(p, fd);
delete_handle(handle);
return 0;
}
static int global_select(lua_State *L, const sigset_t* mask, int sigreceived) {
int rtab, wtab, etab, itab, ret, ndirty;
t_socket max_fd;
fd_set rset, wset, eset;
t_timeout tm;
double t = luaL_optnumber(L, 4, -1);
FD_ZERO(&rset); FD_ZERO(&wset); FD_ZERO(&eset);
lua_settop(L, 4);
lua_newtable(L); itab = lua_gettop(L);
lua_newtable(L); rtab = lua_gettop(L);
lua_newtable(L); wtab = lua_gettop(L);
lua_newtable(L); etab = lua_gettop(L);
max_fd = collect_fd(L, 1, SOCKET_INVALID, itab, &rset);
ndirty = check_dirty(L, 1, rtab, &rset);
t = ndirty > 0? 0.0: t;
timeout_init(&tm, t, -1);
timeout_markstart(&tm);
max_fd = collect_fd(L, 2, max_fd, itab, &wset);
max_fd = collect_fd(L, 3, max_fd, itab, &eset);
//printf("+enter select\n");
if (sigreceived) {
ret = -1;
} else {
ret = socket_select(max_fd+1, &rset, &wset, &eset, &tm, mask);
}
//printf("+exit select\n");
if (ret > 0 || ndirty > 0) {
return_fd(L, &rset, max_fd+1, itab, rtab, ndirty);
return_fd(L, &wset, max_fd+1, itab, wtab, 0);
return_fd(L, &eset, max_fd+1, itab, etab, 0);
make_assoc(L, rtab);
make_assoc(L, wtab);
make_assoc(L, etab);
return 3; //3 values pushed: 3 result tables
} else if (ret == 0) {
lua_pushstring(L, "timeout");
return 4; //4 values pushed: 3 result tables + timeout msg
} else {
lua_pushstring(L, strerror(errno));
return 4; //4 values pushed: 3 result tables + errno msg
}
}
