mhd_itc_types.h (3403B)
1 /* SPDX-License-Identifier: LGPL-2.1-or-later OR (GPL-2.0-or-later WITH eCos-exception-2.0) */ 2 /* 3 This file is part of GNU libmicrohttpd. 4 Copyright (C) 2016-2024 Evgeny Grin (Karlson2k), Christian Grothoff 5 6 GNU libmicrohttpd is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Lesser General Public 8 License as published by the Free Software Foundation; either 9 version 2.1 of the License, or (at your option) any later version. 10 11 GNU libmicrohttpd is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Lesser General Public License for more details. 15 16 Alternatively, you can redistribute GNU libmicrohttpd and/or 17 modify it under the terms of the GNU General Public License as 18 published by the Free Software Foundation; either version 2 of 19 the License, or (at your option) any later version, together 20 with the eCos exception, as follows: 21 22 As a special exception, if other files instantiate templates or 23 use macros or inline functions from this file, or you compile this 24 file and link it with other works to produce a work based on this 25 file, this file does not by itself cause the resulting work to be 26 covered by the GNU General Public License. However the source code 27 for this file must still be made available in accordance with 28 section (3) of the GNU General Public License v2. 29 30 This exception does not invalidate any other reasons why a work 31 based on this file might be covered by the GNU General Public 32 License. 33 34 You should have received copies of the GNU Lesser General Public 35 License and the GNU General Public License along with this library; 36 if not, see <https://www.gnu.org/licenses/>. 37 */ 38 39 /** 40 * @file src/mhd2/mhd_itc_types.h 41 * @brief Types for platform-independent inter-thread communication 42 * @author Karlson2k (Evgeny Grin) 43 * @author Christian Grothoff 44 * 45 * Provides basic types for inter-thread communication. 46 * Designed to be included by other headers. 47 */ 48 #ifndef MHD_ITC_TYPES_H 49 #define MHD_ITC_TYPES_H 1 50 #include "mhd_sys_options.h" 51 52 /* Force socketpair on native W32 */ 53 #if defined(_WIN32) && ! defined(__CYGWIN__) && ! defined(MHD_ITC_SOCKETPAIR_) 54 #error MHD_ITC_SOCKETPAIR_ is not defined on native W32 platform 55 #endif /* _WIN32 && !__CYGWIN__ && !MHD_ITC_SOCKETPAIR_ */ 56 57 #if defined(MHD_ITC_EVENTFD_) 58 /* **************** Optimised ITC implementation by eventfd ********** */ 59 60 /** 61 * Data type for a MHD ITC. 62 */ 63 struct mhd_itc 64 { 65 int fd; 66 }; 67 68 /** 69 * Static initialiser for struct mhd_itc 70 */ 71 # define mhd_ITC_STATIC_INIT_INVALID { -1 } 72 73 74 #elif defined(MHD_ITC_PIPE_) 75 /* **************** Standard UNIX ITC implementation by pipe ********** */ 76 77 /** 78 * Data type for a MHD ITC. 79 */ 80 struct mhd_itc 81 { 82 int fd[2]; 83 }; 84 85 /** 86 * Static initialiser for struct mhd_itc 87 */ 88 # define mhd_ITC_STATIC_INIT_INVALID { { -1, -1 } } 89 90 91 #elif defined(MHD_ITC_SOCKETPAIR_) 92 /* **************** ITC implementation by socket pair ********** */ 93 94 # include "mhd_socket_type.h" 95 96 /** 97 * Data type for a MHD ITC. 98 */ 99 struct mhd_itc 100 { 101 MHD_Socket sk[2]; 102 }; 103 104 /** 105 * Static initialiser for struct mhd_itc 106 */ 107 # define mhd_ITC_STATIC_INIT_INVALID \ 108 { { MHD_INVALID_SOCKET, MHD_INVALID_SOCKET } } 109 110 #endif /* MHD_ITC_SOCKETPAIR_ */ 111 112 #endif /* ! MHD_ITC_TYPES_H */