Remove mg_enable_multithreading. Close cesanta/dev#6511

PUBLISHED_FROM=7864ffa26cb553f5d4a93248f67c288327ec23b0

mongoose.c

@@ -4627,139 +4627,6 @@ int mg_ssl_if_mbed_random(void *ctx, unsigned char *buf, size_t len) {
 
 #endif /* MG_ENABLE_SSL && MG_SSL_IF == MG_SSL_IF_MBEDTLS */
 #ifdef MG_MODULE_LINES
-#line 1 "mongoose/src/multithreading.c"
-#endif
-/*
- * Copyright (c) 2014 Cesanta Software Limited
- * All rights reserved
- */
-
-/* Amalgamated: #include "mongoose/src/internal.h" */
-/* Amalgamated: #include "mongoose/src/util.h" */
-
-#if MG_ENABLE_THREADS
-
-static void multithreaded_ev_handler(struct mg_connection *c, int ev, void *p);
-
-/*
- * This thread function executes user event handler.
- * It runs an event manager that has only one connection, until that
- * connection is alive.
- */
-static void *per_connection_thread_function(void *param) {
-  struct mg_connection *c = (struct mg_connection *) param;
-  struct mg_mgr m;
-  /* mgr_data can be used subsequently, store its value */
-  int poll_timeout = (intptr_t) c->mgr_data;
-
-  mg_mgr_init(&m, NULL);
-  mg_add_conn(&m, c);
-  mg_call(c, NULL, MG_EV_ACCEPT, &c->sa);
-
-  while (m.active_connections != NULL) {
-    mg_mgr_poll(&m, poll_timeout ? poll_timeout : 1000);
-  }
-  mg_mgr_free(&m);
-
-  return param;
-}
-
-static void link_conns(struct mg_connection *c1, struct mg_connection *c2) {
-  c1->priv_2 = c2;
-  c2->priv_2 = c1;
-}
-
-static void unlink_conns(struct mg_connection *c) {
-  struct mg_connection *peer = (struct mg_connection *) c->priv_2;
-  if (peer != NULL) {
-    peer->flags |= MG_F_SEND_AND_CLOSE;
-    peer->priv_2 = NULL;
-  }
-  c->priv_2 = NULL;
-}
-
-static void forwarder_ev_handler(struct mg_connection *c, int ev, void *p) {
-  (void) p;
-  if (ev == MG_EV_RECV && c->priv_2) {
-    mg_forward(c, (struct mg_connection *) c->priv_2);
-  } else if (ev == MG_EV_CLOSE) {
-    unlink_conns(c);
-  }
-}
-
-static void spawn_handling_thread(struct mg_connection *nc) {
-  struct mg_mgr dummy;
-  sock_t sp[2];
-  struct mg_connection *c[2];
-  int poll_timeout;
-  /*
-   * Create a socket pair, and wrap each socket into the connection with
-   * dummy event manager.
-   * c[0] stays in this thread, c[1] goes to another thread.
-   */
-  mg_mgr_init(&dummy, NULL);
-  mg_socketpair(sp, SOCK_STREAM);
-
-  c[0] = mg_add_sock(&dummy, sp[0], forwarder_ev_handler);
-  c[1] = mg_add_sock(&dummy, sp[1], nc->listener->priv_1.f);
-
-  /* link_conns replaces priv_2, storing its value */
-  poll_timeout = (intptr_t) nc->priv_2;
-
-  /* Interlink client connection with c[0] */
-  link_conns(c[0], nc);
-
-  /*
-   * Switch c[0] manager from the dummy one to the real one. c[1] manager
-   * will be set in another thread, allocated on stack of that thread.
-   */
-  mg_add_conn(nc->mgr, c[0]);
-
-  /*
-   * Dress c[1] as nc.
-   * TODO(lsm): code in accept_conn() looks similar. Refactor.
-   */
-  c[1]->listener = nc->listener;
-  c[1]->proto_handler = nc->proto_handler;
-  c[1]->user_data = nc->user_data;
-  c[1]->sa = nc->sa;
-  c[1]->flags = nc->flags;
-
-  /* priv_2 is used, so, put timeout to mgr_data */
-  c[1]->mgr_data = (void *) (intptr_t) poll_timeout;
-
-  mg_start_thread(per_connection_thread_function, c[1]);
-}
-
-static void multithreaded_ev_handler(struct mg_connection *c, int ev, void *p) {
-  (void) p;
-  if (ev == MG_EV_ACCEPT) {
-    spawn_handling_thread(c);
-    c->handler = forwarder_ev_handler;
-  }
-}
-
-void mg_enable_multithreading_opt(struct mg_connection *nc,
-                                  struct mg_multithreading_opts opts) {
-  /* Wrap user event handler into our multithreaded_ev_handler */
-  nc->priv_1.f = nc->handler;
-  /*
-   * We put timeout to `priv_2` member of the main
-   * (listening) connection, mt is not enabled yet,
-   * and this member is not used
-   */
-  nc->priv_2 = (void *) (intptr_t) opts.poll_timeout;
-  nc->handler = multithreaded_ev_handler;
-}
-
-void mg_enable_multithreading(struct mg_connection *nc) {
-  struct mg_multithreading_opts opts;
-  memset(&opts, 0, sizeof(opts));
-  mg_enable_multithreading_opt(nc, opts);
-}
-
-#endif
-#ifdef MG_MODULE_LINES
 #line 1 "mongoose/src/uri.c"
 #endif
 /*