2022-10-19 23:55:15 +00:00
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//===-- Macros defined in sys/select.h header file ------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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2024-02-28 12:53:56 -08:00
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#ifndef LLVM_LIBC_MACROS_SYS_SELECT_MACROS_H
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#define LLVM_LIBC_MACROS_SYS_SELECT_MACROS_H
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2022-10-19 23:55:15 +00:00
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#define FD_SETSIZE 1024
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#define __FD_SET_WORD_TYPE unsigned long
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#define __FD_SET_WORD_SIZE (sizeof(__FD_SET_WORD_TYPE) * 8)
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#define __FD_SET_ARRAYSIZE (FD_SETSIZE / __FD_SET_WORD_SIZE)
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#define FD_ZERO(set) \
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do { \
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unsigned i; \
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for (i = 0; i < __FD_SET_ARRAYSIZE; ++i) \
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(set)->__set[i] = 0; \
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} while (0)
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#define __FD_WORD(fd) ((fd) / __FD_SET_WORD_SIZE)
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#define __FD_MASK(fd) \
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((__FD_SET_WORD_TYPE)1) << ((__FD_SET_WORD_TYPE)((fd) % __FD_SET_WORD_SIZE))
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#define FD_CLR(fd, set) (void)((set)->__set[__FD_WORD(fd)] &= ~__FD_MASK(fd))
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#define FD_SET(fd, set) (void)((set)->__set[__FD_WORD(fd)] |= __FD_MASK(fd))
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#define FD_ISSET(fd, set) \
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(int)(((set)->__set[__FD_WORD(fd)] & __FD_MASK(fd)) != 0)
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2024-02-28 12:53:56 -08:00
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#endif // LLVM_LIBC_MACROS_SYS_SELECT_MACROS_H
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