/* * Copyright (C) 2010 The Android Open Source Project * * 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. */ #ifndef __LIB_UTILS_COMPAT_H #define __LIB_UTILS_COMPAT_H #include <unistd.h> #if defined(__APPLE__) /* Mac OS has always had a 64-bit off_t, so it doesn't have off64_t. */ typedef off_t off64_t; static inline off64_t lseek64(int fd, off64_t offset, int whence) { return lseek(fd, offset, whence); } static inline ssize_t pread64(int fd, void* buf, size_t nbytes, off64_t offset) { return pread(fd, buf, nbytes, offset); } static inline ssize_t pwrite64(int fd, const void* buf, size_t nbytes, off64_t offset) { return pwrite(fd, buf, nbytes, offset); } static inline int ftruncate64(int fd, off64_t length) { return ftruncate(fd, length); } #endif /* __APPLE__ */ #if defined(_WIN32) #define O_CLOEXEC O_NOINHERIT #define O_NOFOLLOW 0 #define DEFFILEMODE 0666 #endif /* _WIN32 */ #define ZD "%zd" #define ZD_TYPE ssize_t /* * Needed for cases where something should be constexpr if possible, but not * being constexpr is fine if in pre-C++11 code (such as a const static float * member variable). */ #if __cplusplus >= 201103L #define CONSTEXPR constexpr #else #define CONSTEXPR #endif /* * TEMP_FAILURE_RETRY is defined by some, but not all, versions of * <unistd.h>. (Alas, it is not as standard as we'd hoped!) So, if it's * not already defined, then define it here. */ #ifndef TEMP_FAILURE_RETRY /* Used to retry syscalls that can return EINTR. */ #define TEMP_FAILURE_RETRY(exp) ({ \ typeof (exp) _rc; \ do { \ _rc = (exp); \ } while (_rc == -1 && errno == EINTR); \ _rc; }) #endif #if defined(_WIN32) #define OS_PATH_SEPARATOR '\\' #else #define OS_PATH_SEPARATOR '/' #endif #endif /* __LIB_UTILS_COMPAT_H */