//===- llvm/Support/Unix/Unix.h - Common Unix Include File -------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This file defines things specific to Unix implementations. // //===----------------------------------------------------------------------===// #ifndef LLVM_SYSTEM_UNIX_UNIX_H #define LLVM_SYSTEM_UNIX_UNIX_H //===----------------------------------------------------------------------===// //=== WARNING: Implementation here must contain only generic UNIX code that //=== is guaranteed to work on all UNIX variants. //===----------------------------------------------------------------------===// #include "llvm/Config/config.h" // Get autoconf configuration settings #include "llvm/Support/Errno.h" #include <algorithm> #include <cerrno> #include <cstdio> #include <cstdlib> #include <cstring> #include <string> #ifdef HAVE_UNISTD_H #include <unistd.h> #endif #ifdef HAVE_SYS_TYPES_H #include <sys/types.h> #endif #ifdef HAVE_SYS_PARAM_H #include <sys/param.h> #endif #ifdef HAVE_ASSERT_H #include <assert.h> #endif #ifdef HAVE_SYS_TIME_H # include <sys/time.h> #endif #include <time.h> #ifdef HAVE_SYS_WAIT_H # include <sys/wait.h> #endif #ifndef WEXITSTATUS # define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8) #endif #ifndef WIFEXITED # define WIFEXITED(stat_val) (((stat_val) & 255) == 0) #endif /// This function builds an error message into \p ErrMsg using the \p prefix /// string and the Unix error number given by \p errnum. If errnum is -1, the /// default then the value of errno is used. /// @brief Make an error message /// /// If the error number can be converted to a string, it will be /// separated from prefix by ": ". static inline bool MakeErrMsg( std::string* ErrMsg, const std::string& prefix, int errnum = -1) { if (!ErrMsg) return true; if (errnum == -1) errnum = errno; *ErrMsg = prefix + ": " + llvm::sys::StrError(errnum); return true; } #endif