mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 15:40:19 +00:00
86 lines
3 KiB
C++
86 lines
3 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#ifdef __i386__
|
|
# define AK_ARCH_I386 1
|
|
#endif
|
|
|
|
#ifdef __x86_64__
|
|
# define AK_ARCH_X86_64 1
|
|
#endif
|
|
|
|
#define ARCH(arch) (defined(AK_ARCH_##arch) && AK_ARCH_##arch)
|
|
|
|
#ifdef __clang__
|
|
# define CONSUMABLE(initial_state) __attribute__((consumable(initial_state)))
|
|
# define CALLABLE_WHEN(...) __attribute__((callable_when(__VA_ARGS__)))
|
|
# define SET_TYPESTATE(state) __attribute__((set_typestate(state)))
|
|
# define RETURN_TYPESTATE(state) __attribute__((return_typestate(state)))
|
|
#else
|
|
# define CONSUMABLE(initial_state)
|
|
# define CALLABLE_WHEN(...)
|
|
# define SET_TYPESTATE(state)
|
|
# define RETURN_TYPESTATE(state)
|
|
#endif
|
|
|
|
#ifndef __serenity__
|
|
# define PAGE_SIZE sysconf(_SC_PAGESIZE)
|
|
|
|
# include <errno.h>
|
|
# include <fcntl.h>
|
|
# include <stdlib.h>
|
|
# include <string.h>
|
|
inline int open_with_path_length(const char* path, size_t path_length, int options, mode_t mode)
|
|
{
|
|
auto* tmp = (char*)malloc(path_length + 1);
|
|
memcpy(tmp, path, path_length);
|
|
tmp[path_length] = '\0';
|
|
int fd = open(tmp, options, mode);
|
|
int saved_errno = errno;
|
|
free(tmp);
|
|
errno = saved_errno;
|
|
return fd;
|
|
}
|
|
#endif
|
|
|
|
template<typename T>
|
|
[[gnu::always_inline]] inline T convert_between_host_and_network(T value)
|
|
{
|
|
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
|
|
if constexpr (sizeof(T) == 8)
|
|
return __builtin_bswap64(value);
|
|
if constexpr (sizeof(T) == 4)
|
|
return __builtin_bswap32(value);
|
|
if constexpr (sizeof(T) == 2)
|
|
return __builtin_bswap16(value);
|
|
if constexpr (sizeof(T) == 1)
|
|
return value;
|
|
#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
|
|
return value;
|
|
#endif
|
|
}
|