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Use new getFileSize function instead of sys/stat.h directly.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10650 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2003-12-30 07:40:35 +00:00
parent 316cb083d6
commit b70abe1c5a
4 changed files with 19 additions and 28 deletions
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11
lib/Bytecode/Reader/ReaderWrappers.cpp
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@ -21,7 +21,6 @@
#include "Config/fcntl.h"
#include "Config/unistd.h"
#include "Config/sys/mman.h"
#include <sys/stat.h>
#include <cerrno>
using namespace llvm;
@ -51,17 +50,15 @@ static std::string ErrnoMessage (int savedErrNum, std::string descr) {
}
BytecodeFileReader::BytecodeFileReader(const std::string &Filename) {
Length = getFileSize(Filename);
if (Length == -1)
throw ErrnoMessage(errno, "stat '" + Filename + "'");
FDHandle FD(open(Filename.c_str(), O_RDONLY));
if (FD == -1)
throw ErrnoMessage(errno, "open '" + Filename + "'");
// Stat the file to get its length...
struct stat StatBuf;
if (fstat(FD, &StatBuf) == -1 || StatBuf.st_size == 0)
throw ErrnoMessage(errno, "stat '" + Filename + "'");
// mmap in the file all at once...
Length = StatBuf.st_size;
Buffer = (unsigned char*)mmap(0, Length, PROT_READ, MAP_PRIVATE, FD, 0);
if (Buffer == (unsigned char*)MAP_FAILED)