// Copyright 2018 Espressif Systems (Shanghai) PTE LTD // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. #include <sys/select.h> #include "esp_vfs.h" #include "sdkconfig.h" #ifdef CONFIG_LWIP_USE_ONLY_LWIP_SELECT #include "lwip/sockets.h" #ifdef CONFIG_VFS_SUPPRESS_SELECT_DEBUG_OUTPUT #define LOG_LOCAL_LEVEL ESP_LOG_NONE #endif //CONFIG_VFS_SUPPRESS_SELECT_DEBUG_OUTPUT #include "esp_log.h" static const char *TAG = "newlib_select"; static void log_fd_set(const char *fds_name, const fd_set *fds) { if (fds_name && fds) { ESP_LOGD(TAG, "FDs in %s =", fds_name); for (int i = 0; i < MAX_FDS; ++i) { if (FD_ISSET(i, fds)) { ESP_LOGD(TAG, "%d", i); } } } } #endif //CONFIG_LWIP_USE_ONLY_LWIP_SELECT int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *errorfds, struct timeval *timeout) { #ifdef CONFIG_LWIP_USE_ONLY_LWIP_SELECT ESP_LOGD(TAG, "lwip_select starts with nfds = %d", nfds); if (timeout) { ESP_LOGD(TAG, "timeout is %lds + %ldus", (long)timeout->tv_sec, timeout->tv_usec); } log_fd_set("readfds", readfds); log_fd_set("writefds", writefds); log_fd_set("errorfds", errorfds); int ret = lwip_select(nfds, readfds, writefds, errorfds, timeout); ESP_LOGD(TAG, "lwip_select returns %d", ret); log_fd_set("readfds", readfds); log_fd_set("writefds", writefds); log_fd_set("errorfds", errorfds); return ret; #else return esp_vfs_select(nfds, readfds, writefds, errorfds, timeout); #endif }