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e40d54f89c
According to the man page, <sys/select.h> is the header to include on POSIX systems for select() and associated APIs. Fixes compilation with some versions of Cygwin (Github issue #49). configure.ac: runtime/mercury_conf.h.in Define MR_HAVE_SYS_SELECT_H if <sys/select.h> is available. runtime/mercury_reg_workarounds.c runtime/mercury_reg_workarounds.h Include <sys/select.h> if MR_HAVE_SYS_SELECT_H is defined.
69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
// vim: ts=4 sw=4 expandtab ft=c
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// Copyright (C) 1998, 2001-2004, 2006 The University of Melbourne.
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// Copyright (C) 2016, 2018 The Mercury team.
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// This file is distributed under the terms specified in COPYING.LIB.
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// All the functions in this file work around problems caused by
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// our use of global registers conflicting with the use of registers
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// by gcc, or asm fragments in the GNU headers.
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#include "mercury_conf.h"
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#include "mercury_reg_workarounds.h"
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#include <stdlib.h>
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#ifdef MR_CAN_DO_PENDING_IO
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#ifdef MR_BZERO_NEEDS_STRINGS_HEADER
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#include <strings.h>
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#endif
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#ifdef MR_HAVE_SYS_SELECT_H
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#include <sys/select.h> // for select() -- POSIX
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#endif
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#include <sys/types.h> // for fd_set and FD_ZERO()
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#include <sys/time.h> // for FD_ZERO()
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#ifdef MR_HAVE_UNISTD_H
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#include <unistd.h> // for FD_ZERO()
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#endif
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void
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MR_fd_zero(fd_set *fdset)
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{
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FD_ZERO(fdset);
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}
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#endif // MR_CAN_DO_PENDING_IO
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// See the header file for documentation on why we need this function.
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#if defined(MR_CANNOT_USE_STRUCTURE_ASSIGNMENT) && \
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defined(MR_USE_GCC_GLOBAL_REGISTERS)
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void
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MR_memcpy(void *dest, const void *src, size_t nbytes)
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{
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char *d = (char *) dest;
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const char *s = (const char *) src;
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while (nbytes-- > 0) {
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*d++ = *s++;
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}
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}
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// See the header file for documentation on why we need this function.
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void
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MR_memset(void *dest, char c, size_t nbytes)
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{
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char *d = (char *) dest;
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while (nbytes-- > 0) {
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*d++ = c;
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}
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}
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#endif // MR_CANNOT_USE_STRUCTURE_ASSIGNMENT && MR_USE_GCC_GLOBAL_REGISTERS
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