diff options
Diffstat (limited to 'web/server/single/single-threaded.c')
| -rw-r--r-- | web/server/single/single-threaded.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/web/server/single/single-threaded.c b/web/server/single/single-threaded.c deleted file mode 100644 index 7e89ee683..000000000 --- a/web/server/single/single-threaded.c +++ /dev/null @@ -1,194 +0,0 @@ -// SPDX-License-Identifier: GPL-3.0-or-later - -#define WEB_SERVER_INTERNALS 1 -#include "single-threaded.h" - -// -------------------------------------------------------------------------------------- -// the main socket listener - SINGLE-THREADED - -struct web_client *single_threaded_clients[FD_SETSIZE]; - -static inline int single_threaded_link_client(struct web_client *w, fd_set *ifds, fd_set *ofds, fd_set *efds, int *max) { - if(unlikely(web_client_check_dead(w) || (!web_client_has_wait_receive(w) && !web_client_has_wait_send(w)))) { - return 1; - } - - if(unlikely(w->ifd < 0 || w->ifd >= (int)FD_SETSIZE || w->ofd < 0 || w->ofd >= (int)FD_SETSIZE)) { - error("%llu: invalid file descriptor, ifd = %d, ofd = %d (required 0 <= fd < FD_SETSIZE (%d)", w->id, w->ifd, w->ofd, (int)FD_SETSIZE); - return 1; - } - - FD_SET(w->ifd, efds); - if(unlikely(*max < w->ifd)) *max = w->ifd; - - if(unlikely(w->ifd != w->ofd)) { - if(*max < w->ofd) *max = w->ofd; - FD_SET(w->ofd, efds); - } - - if(web_client_has_wait_receive(w)) FD_SET(w->ifd, ifds); - if(web_client_has_wait_send(w)) FD_SET(w->ofd, ofds); - - single_threaded_clients[w->ifd] = w; - single_threaded_clients[w->ofd] = w; - - return 0; -} - -static inline int single_threaded_unlink_client(struct web_client *w, fd_set *ifds, fd_set *ofds, fd_set *efds) { - FD_CLR(w->ifd, efds); - if(unlikely(w->ifd != w->ofd)) FD_CLR(w->ofd, efds); - - if(web_client_has_wait_receive(w)) FD_CLR(w->ifd, ifds); - if(web_client_has_wait_send(w)) FD_CLR(w->ofd, ofds); - - single_threaded_clients[w->ifd] = NULL; - single_threaded_clients[w->ofd] = NULL; - - if(unlikely(web_client_check_dead(w) || (!web_client_has_wait_receive(w) && !web_client_has_wait_send(w)))) { - return 1; - } - - return 0; -} - -static void socket_listen_main_single_threaded_cleanup(void *data) { - struct netdata_static_thread *static_thread = (struct netdata_static_thread *)data; - static_thread->enabled = NETDATA_MAIN_THREAD_EXITING; - - info("closing all sockets..."); - listen_sockets_close(&api_sockets); - - info("freeing web clients cache..."); - web_client_cache_destroy(); - - info("cleanup completed."); - static_thread->enabled = NETDATA_MAIN_THREAD_EXITED; -} - -void *socket_listen_main_single_threaded(void *ptr) { - netdata_thread_cleanup_push(socket_listen_main_single_threaded_cleanup, ptr); - web_server_mode = WEB_SERVER_MODE_SINGLE_THREADED; - web_server_is_multithreaded = 0; - - struct web_client *w; - - if(!api_sockets.opened) - fatal("LISTENER: no listen sockets available."); - - size_t i; - for(i = 0; i < (size_t)FD_SETSIZE ; i++) - single_threaded_clients[i] = NULL; - - fd_set ifds, ofds, efds, rifds, rofds, refds; - FD_ZERO (&ifds); - FD_ZERO (&ofds); - FD_ZERO (&efds); - int fdmax = 0; - - for(i = 0; i < api_sockets.opened ; i++) { - if (api_sockets.fds[i] < 0 || api_sockets.fds[i] >= (int)FD_SETSIZE) - fatal("LISTENER: Listen socket %d is not ready, or invalid.", api_sockets.fds[i]); - - info("Listening on '%s'", (api_sockets.fds_names[i])?api_sockets.fds_names[i]:"UNKNOWN"); - - FD_SET(api_sockets.fds[i], &ifds); - FD_SET(api_sockets.fds[i], &efds); - if(fdmax < api_sockets.fds[i]) - fdmax = api_sockets.fds[i]; - } - - while(!netdata_exit) { - debug(D_WEB_CLIENT_ACCESS, "LISTENER: single threaded web server waiting (fdmax = %d)...", fdmax); - - struct timeval tv = { .tv_sec = 1, .tv_usec = 0 }; - rifds = ifds; - rofds = ofds; - refds = efds; - int retval = select(fdmax+1, &rifds, &rofds, &refds, &tv); - - if(unlikely(retval == -1)) { - error("LISTENER: select() failed."); - continue; - } - else if(likely(retval)) { - debug(D_WEB_CLIENT_ACCESS, "LISTENER: got something."); - - for(i = 0; i < api_sockets.opened ; i++) { - if (FD_ISSET(api_sockets.fds[i], &rifds)) { - debug(D_WEB_CLIENT_ACCESS, "LISTENER: new connection."); - w = web_client_create_on_listenfd(api_sockets.fds[i]); - if(unlikely(!w)) - continue; - - if(api_sockets.fds_families[i] == AF_UNIX) - web_client_set_unix(w); - else - web_client_set_tcp(w); - - if (single_threaded_link_client(w, &ifds, &ofds, &ifds, &fdmax) != 0) { - web_client_release(w); - } - } - } - - for(i = 0 ; i <= (size_t)fdmax ; i++) { - if(likely(!FD_ISSET(i, &rifds) && !FD_ISSET(i, &rofds) && !FD_ISSET(i, &refds))) - continue; - - w = single_threaded_clients[i]; - if(unlikely(!w)) { - // error("no client on slot %zu", i); - continue; - } - - if(unlikely(single_threaded_unlink_client(w, &ifds, &ofds, &efds) != 0)) { - // error("failed to unlink client %zu", i); - web_client_release(w); - continue; - } - - if (unlikely(FD_ISSET(w->ifd, &refds) || FD_ISSET(w->ofd, &refds))) { - // error("no input on client %zu", i); - web_client_release(w); - continue; - } - - if (unlikely(web_client_has_wait_receive(w) && FD_ISSET(w->ifd, &rifds))) { - if (unlikely(web_client_receive(w) < 0)) { - // error("cannot read from client %zu", i); - web_client_release(w); - continue; - } - - if (w->mode != WEB_CLIENT_MODE_FILECOPY) { - debug(D_WEB_CLIENT, "%llu: Processing received data.", w->id); - web_client_process_request(w); - } - } - - if (unlikely(web_client_has_wait_send(w) && FD_ISSET(w->ofd, &rofds))) { - if (unlikely(web_client_send(w) < 0)) { - // error("cannot send data to client %zu", i); - debug(D_WEB_CLIENT, "%llu: Cannot send data to client. Closing client.", w->id); - web_client_release(w); - continue; - } - } - - if(unlikely(single_threaded_link_client(w, &ifds, &ofds, &efds, &fdmax) != 0)) { - // error("failed to link client %zu", i); - web_client_release(w); - } - } - } - else { - debug(D_WEB_CLIENT_ACCESS, "LISTENER: single threaded web server timeout."); - } - } - - netdata_thread_cleanup_pop(1); - return NULL; -} - - |