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Make all of this functionality work directly on win32. Properly conditionalize

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system specific stuff on HAVE_MKSTEMP


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14051 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-06-07 19:37:24 +00:00
parent b4db5f3e4b
commit fa5fe7c8b8
1 changed files with 29 additions and 13 deletions
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42
lib/Support/FileUtilities.cpp
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@ -13,11 +13,13 @@
//===----------------------------------------------------------------------===//
#include "Support/FileUtilities.h"
#include "Support/DataTypes.h"
#include "Config/unistd.h"
#include "Config/fcntl.h"
#include "Config/sys/stat.h"
#include "Config/sys/types.h"
#include "Config/sys/stat.h"
#include "Config/sys/mman.h"
#include "Config/alloca.h"
#include <cerrno>
#include <cstdio>
#include <fstream>
@ -28,10 +30,10 @@ using namespace llvm;
/// name a readable file.
///
bool llvm::CheckMagic(const std::string &FN, const std::string &Magic) {
char buf[1 + Magic.size ()];
std::ifstream f (FN.c_str ());
f.read (buf, Magic.size ());
buf[Magic.size ()] = '\0';
char *buf = (char*)alloca(1 + Magic.size());
std::ifstream f(FN.c_str());
f.read(buf, Magic.size());
buf[Magic.size()] = '\0';
return Magic == buf;
}
@ -41,7 +43,7 @@ bool llvm::CheckMagic(const std::string &FN, const std::string &Magic) {
bool llvm::IsArchive(const std::string &FN) {
// Inspect the beginning of the file to see if it contains the "ar"
// library archive format magic string.
return CheckMagic (FN, "!<arch>\012");
return CheckMagic(FN, "!<arch>\012");
}
/// IsBytecode - Returns true IFF the file named FN appears to be an LLVM
@ -179,8 +181,11 @@ std::string llvm::getUniqueFilename(const std::string &FilenameBase) {
strcpy(FNBuffer+FilenameBase.size(), "-XXXXXX");
// Agree on a temporary file name to use....
#if defined(HAVE_MKSTEMP) && !defined(_MSC_VER)
int TempFD;
if ((TempFD = mkstemp(FNBuffer)) == -1) {
// FIXME: this should return an emtpy string or something and allow the
// caller to deal with the error!
std::cerr << "bugpoint: ERROR: Cannot create temporary file in the current "
<< " directory!\n";
exit(1);
@ -189,22 +194,33 @@ std::string llvm::getUniqueFilename(const std::string &FilenameBase) {
// We don't need to hold the temp file descriptor... we will trust that no one
// will overwrite/delete the file while we are working on it...
close(TempFD);
#else
// If we don't have mkstemp, use the old and obsolete mktemp function.
if (mktemp(FNBuffer) == 0) {
// FIXME: this should return an emtpy string or something and allow the
// caller to deal with the error!
std::cerr << "bugpoint: ERROR: Cannot create temporary file in the current "
<< " directory!\n";
exit(1);
}
#endif
std::string Result(FNBuffer);
delete[] FNBuffer;
return Result;
}
static bool AddPermissionsBits (const std::string &Filename, mode_t bits) {
static bool AddPermissionsBits (const std::string &Filename, int bits) {
// Get the umask value from the operating system. We want to use it
// when changing the file's permissions. Since calling umask() sets
// the umask and returns its old value, we must call it a second
// time to reset it to the user's preference.
mode_t mask = umask (0777); // The arg. to umask is arbitrary...
umask (mask);
int mask = umask(0777); // The arg. to umask is arbitrary.
umask(mask); // Restore the umask.
// Get the file's current mode.
struct stat st;
if ((stat (Filename.c_str(), &st)) == -1)
if ((stat(Filename.c_str(), &st)) == -1)
return false;
// Change the file to have whichever permissions bits from 'bits'
@ -259,8 +275,8 @@ unsigned long long llvm::getFileTimestamp(const std::string &Filename) {
/// failure, return null.
void *llvm::ReadFileIntoAddressSpace(const std::string &Filename,
unsigned &Length) {
#ifdef HAVE_MMAP_FILE
Length = getFileSize(Filename);
#if defined(HAVE_MMAP_FILE) && !defined(_MSC_VER)
Length = (unsigned)getFileSize(Filename);
if ((int)Length == -1) return 0;
FDHandle FD(open(Filename.c_str(), O_RDONLY));
@ -287,7 +303,7 @@ void *llvm::ReadFileIntoAddressSpace(const std::string &Filename,
/// UnmapFileFromAddressSpace - Remove the specified file from the current
/// address space.
void llvm::UnmapFileFromAddressSpace(void *Buffer, unsigned Length) {
#ifdef HAVE_MMAP_FILE
#if defined(HAVE_MMAP_FILE) && !defined(_MSC_VER)
if (Length)
munmap((char*)Buffer, Length);
else