forked from OSchip/llvm-project
107 lines
2.9 KiB
C++
107 lines
2.9 KiB
C++
//===- 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_LIB_SUPPORT_UNIX_UNIX_H
|
|
#define LLVM_LIB_SUPPORT_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/Chrono.h"
|
|
#include "llvm/Support/Errno.h"
|
|
#include <algorithm>
|
|
#include <assert.h>
|
|
#include <cerrno>
|
|
#include <cstdio>
|
|
#include <cstdlib>
|
|
#include <cstring>
|
|
#include <string>
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_SYS_PARAM_H
|
|
#include <sys/param.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_SYS_TIME_H
|
|
# include <sys/time.h>
|
|
#endif
|
|
#include <time.h>
|
|
|
|
#ifdef HAVE_DLFCN_H
|
|
# include <dlfcn.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_FCNTL_H
|
|
# include <fcntl.h>
|
|
#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.
|
|
/// 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;
|
|
}
|
|
|
|
namespace llvm {
|
|
namespace sys {
|
|
|
|
/// Convert a struct timeval to a duration. Note that timeval can be used both
|
|
/// as a time point and a duration. Be sure to check what the input represents.
|
|
inline std::chrono::microseconds toDuration(const struct timeval &TV) {
|
|
return std::chrono::seconds(TV.tv_sec) +
|
|
std::chrono::microseconds(TV.tv_usec);
|
|
}
|
|
|
|
/// Convert a time point to struct timespec.
|
|
inline struct timespec toTimeSpec(TimePoint<> TP) {
|
|
using namespace std::chrono;
|
|
|
|
struct timespec RetVal;
|
|
RetVal.tv_sec = toTimeT(TP);
|
|
RetVal.tv_nsec = (TP.time_since_epoch() % seconds(1)).count();
|
|
return RetVal;
|
|
}
|
|
|
|
/// Convert a time point to struct timeval.
|
|
inline struct timeval toTimeVal(TimePoint<std::chrono::microseconds> TP) {
|
|
using namespace std::chrono;
|
|
|
|
struct timeval RetVal;
|
|
RetVal.tv_sec = toTimeT(TP);
|
|
RetVal.tv_usec = (TP.time_since_epoch() % seconds(1)).count();
|
|
return RetVal;
|
|
}
|
|
|
|
} // namespace sys
|
|
} // namespace llvm
|
|
|
|
#endif
|