1 //===- llvm/Support/Unix/Unix.h - Common Unix Include File -------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file defines things specific to Unix implementations. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_LIB_SUPPORT_UNIX_UNIX_H 15 #define LLVM_LIB_SUPPORT_UNIX_UNIX_H 16 17 //===----------------------------------------------------------------------===// 18 //=== WARNING: Implementation here must contain only generic UNIX code that 19 //=== is guaranteed to work on all UNIX variants. 20 //===----------------------------------------------------------------------===// 21 22 #include "llvm/Config/config.h" // Get autoconf configuration settings 23 #include "llvm/Support/Errno.h" 24 #include <algorithm> 25 #include <assert.h> 26 #include <cerrno> 27 #include <cstdio> 28 #include <cstdlib> 29 #include <cstring> 30 #include <string> 31 #include <sys/types.h> 32 #include <sys/wait.h> 33 34 #ifdef HAVE_UNISTD_H 35 #include <unistd.h> 36 #endif 37 38 #ifdef HAVE_SYS_PARAM_H 39 #include <sys/param.h> 40 #endif 41 42 #ifdef HAVE_SYS_TIME_H 43 # include <sys/time.h> 44 #endif 45 #include <time.h> 46 47 #ifdef HAVE_DLFCN_H 48 # include <dlfcn.h> 49 #endif 50 51 /// This function builds an error message into \p ErrMsg using the \p prefix 52 /// string and the Unix error number given by \p errnum. If errnum is -1, the 53 /// default then the value of errno is used. 54 /// @brief Make an error message 55 /// 56 /// If the error number can be converted to a string, it will be 57 /// separated from prefix by ": ". 58 static inline bool MakeErrMsg( 59 std::string* ErrMsg, const std::string& prefix, int errnum = -1) { 60 if (!ErrMsg) 61 return true; 62 if (errnum == -1) 63 errnum = errno; 64 *ErrMsg = prefix + ": " + llvm::sys::StrError(errnum); 65 return true; 66 } 67 68 #endif 69
