From 8111b77e95b083137faf888aeb5892073adf7ab4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= Date: Wed, 27 Jun 2018 16:59:37 +0200 Subject: New upstream version 2.0.0 --- lib/spdlog/fmt/bundled/posix.cc | 241 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 241 insertions(+) create mode 100644 lib/spdlog/fmt/bundled/posix.cc (limited to 'lib/spdlog/fmt/bundled/posix.cc') diff --git a/lib/spdlog/fmt/bundled/posix.cc b/lib/spdlog/fmt/bundled/posix.cc new file mode 100644 index 0000000..356668c --- /dev/null +++ b/lib/spdlog/fmt/bundled/posix.cc @@ -0,0 +1,241 @@ +/* + A C++ interface to POSIX functions. + + Copyright (c) 2012 - 2016, Victor Zverovich + All rights reserved. + + For the license information refer to format.h. + */ + +// Disable bogus MSVC warnings. +#ifndef _CRT_SECURE_NO_WARNINGS +# define _CRT_SECURE_NO_WARNINGS +#endif + +#include "posix.h" + +#include +#include +#include + +#ifndef _WIN32 +# include +#else +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif +# include +# include + +# define O_CREAT _O_CREAT +# define O_TRUNC _O_TRUNC + +# ifndef S_IRUSR +# define S_IRUSR _S_IREAD +# endif + +# ifndef S_IWUSR +# define S_IWUSR _S_IWRITE +# endif + +# ifdef __MINGW32__ +# define _SH_DENYNO 0x40 +# endif + +#endif // _WIN32 + +#ifdef fileno +# undef fileno +#endif + +namespace { +#ifdef _WIN32 +// Return type of read and write functions. +typedef int RWResult; + +// On Windows the count argument to read and write is unsigned, so convert +// it from size_t preventing integer overflow. +inline unsigned convert_rwcount(std::size_t count) { + return count <= UINT_MAX ? static_cast(count) : UINT_MAX; +} +#else +// Return type of read and write functions. +typedef ssize_t RWResult; + +inline std::size_t convert_rwcount(std::size_t count) { return count; } +#endif +} + +fmt::BufferedFile::~BufferedFile() FMT_NOEXCEPT { + if (file_ && FMT_SYSTEM(fclose(file_)) != 0) + fmt::report_system_error(errno, "cannot close file"); +} + +fmt::BufferedFile::BufferedFile( + fmt::CStringRef filename, fmt::CStringRef mode) { + FMT_RETRY_VAL(file_, FMT_SYSTEM(fopen(filename.c_str(), mode.c_str())), 0); + if (!file_) + FMT_THROW(SystemError(errno, "cannot open file {}", filename)); +} + +void fmt::BufferedFile::close() { + if (!file_) + return; + int result = FMT_SYSTEM(fclose(file_)); + file_ = FMT_NULL; + if (result != 0) + FMT_THROW(SystemError(errno, "cannot close file")); +} + +// A macro used to prevent expansion of fileno on broken versions of MinGW. +#define FMT_ARGS + +int fmt::BufferedFile::fileno() const { + int fd = FMT_POSIX_CALL(fileno FMT_ARGS(file_)); + if (fd == -1) + FMT_THROW(SystemError(errno, "cannot get file descriptor")); + return fd; +} + +fmt::File::File(fmt::CStringRef path, int oflag) { + int mode = S_IRUSR | S_IWUSR; +#if defined(_WIN32) && !defined(__MINGW32__) + fd_ = -1; + FMT_POSIX_CALL(sopen_s(&fd_, path.c_str(), oflag, _SH_DENYNO, mode)); +#else + FMT_RETRY(fd_, FMT_POSIX_CALL(open(path.c_str(), oflag, mode))); +#endif + if (fd_ == -1) + FMT_THROW(SystemError(errno, "cannot open file {}", path)); +} + +fmt::File::~File() FMT_NOEXCEPT { + // Don't retry close in case of EINTR! + // See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html + if (fd_ != -1 && FMT_POSIX_CALL(close(fd_)) != 0) + fmt::report_system_error(errno, "cannot close file"); +} + +void fmt::File::close() { + if (fd_ == -1) + return; + // Don't retry close in case of EINTR! + // See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html + int result = FMT_POSIX_CALL(close(fd_)); + fd_ = -1; + if (result != 0) + FMT_THROW(SystemError(errno, "cannot close file")); +} + +fmt::LongLong fmt::File::size() const { +#ifdef _WIN32 + // Use GetFileSize instead of GetFileSizeEx for the case when _WIN32_WINNT + // is less than 0x0500 as is the case with some default MinGW builds. + // Both functions support large file sizes. + DWORD size_upper = 0; + HANDLE handle = reinterpret_cast(_get_osfhandle(fd_)); + DWORD size_lower = FMT_SYSTEM(GetFileSize(handle, &size_upper)); + if (size_lower == INVALID_FILE_SIZE) { + DWORD error = GetLastError(); + if (error != NO_ERROR) + FMT_THROW(WindowsError(GetLastError(), "cannot get file size")); + } + fmt::ULongLong long_size = size_upper; + return (long_size << sizeof(DWORD) * CHAR_BIT) | size_lower; +#else + typedef struct stat Stat; + Stat file_stat = Stat(); + if (FMT_POSIX_CALL(fstat(fd_, &file_stat)) == -1) + FMT_THROW(SystemError(errno, "cannot get file attributes")); + FMT_STATIC_ASSERT(sizeof(fmt::LongLong) >= sizeof(file_stat.st_size), + "return type of File::size is not large enough"); + return file_stat.st_size; +#endif +} + +std::size_t fmt::File::read(void *buffer, std::size_t count) { + RWResult result = 0; + FMT_RETRY(result, FMT_POSIX_CALL(read(fd_, buffer, convert_rwcount(count)))); + if (result < 0) + FMT_THROW(SystemError(errno, "cannot read from file")); + return internal::to_unsigned(result); +} + +std::size_t fmt::File::write(const void *buffer, std::size_t count) { + RWResult result = 0; + FMT_RETRY(result, FMT_POSIX_CALL(write(fd_, buffer, convert_rwcount(count)))); + if (result < 0) + FMT_THROW(SystemError(errno, "cannot write to file")); + return internal::to_unsigned(result); +} + +fmt::File fmt::File::dup(int fd) { + // Don't retry as dup doesn't return EINTR. + // http://pubs.opengroup.org/onlinepubs/009695399/functions/dup.html + int new_fd = FMT_POSIX_CALL(dup(fd)); + if (new_fd == -1) + FMT_THROW(SystemError(errno, "cannot duplicate file descriptor {}", fd)); + return File(new_fd); +} + +void fmt::File::dup2(int fd) { + int result = 0; + FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd))); + if (result == -1) { + FMT_THROW(SystemError(errno, + "cannot duplicate file descriptor {} to {}", fd_, fd)); + } +} + +void fmt::File::dup2(int fd, ErrorCode &ec) FMT_NOEXCEPT { + int result = 0; + FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd))); + if (result == -1) + ec = ErrorCode(errno); +} + +void fmt::File::pipe(File &read_end, File &write_end) { + // Close the descriptors first to make sure that assignments don't throw + // and there are no leaks. + read_end.close(); + write_end.close(); + int fds[2] = {}; +#ifdef _WIN32 + // Make the default pipe capacity same as on Linux 2.6.11+. + enum { DEFAULT_CAPACITY = 65536 }; + int result = FMT_POSIX_CALL(pipe(fds, DEFAULT_CAPACITY, _O_BINARY)); +#else + // Don't retry as the pipe function doesn't return EINTR. + // http://pubs.opengroup.org/onlinepubs/009696799/functions/pipe.html + int result = FMT_POSIX_CALL(pipe(fds)); +#endif + if (result != 0) + FMT_THROW(SystemError(errno, "cannot create pipe")); + // The following assignments don't throw because read_fd and write_fd + // are closed. + read_end = File(fds[0]); + write_end = File(fds[1]); +} + +fmt::BufferedFile fmt::File::fdopen(const char *mode) { + // Don't retry as fdopen doesn't return EINTR. + FILE *f = FMT_POSIX_CALL(fdopen(fd_, mode)); + if (!f) + FMT_THROW(SystemError(errno, "cannot associate stream with file descriptor")); + BufferedFile file(f); + fd_ = -1; + return file; +} + +long fmt::getpagesize() { +#ifdef _WIN32 + SYSTEM_INFO si; + GetSystemInfo(&si); + return si.dwPageSize; +#else + long size = FMT_POSIX_CALL(sysconf(_SC_PAGESIZE)); + if (size < 0) + FMT_THROW(SystemError(errno, "cannot get memory page size")); + return size; +#endif +} -- cgit v1.2.3