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Convert two uses if fstat with sys::fs::status.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186560 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2013-07-18 03:04:20 +00:00
parent 60f18ad8a5
commit 1ceefa6aa3
1 changed files with 13 additions and 14 deletions
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27
lib/Support/MemoryBuffer.cpp
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@ -283,12 +283,11 @@ static bool shouldUseMmap(int FD,
// FIXME: this chunk of code is duplicated, but it avoids a fstat when // FIXME: this chunk of code is duplicated, but it avoids a fstat when
// RequiresNullTerminator = false and MapSize != -1. // RequiresNullTerminator = false and MapSize != -1.
if (FileSize == size_t(-1)) { if (FileSize == size_t(-1)) {
struct stat FileInfo; sys::fs::file_status Status;
// TODO: This should use fstat64 when available. error_code EC = sys::fs::status(FD, Status);
if (fstat(FD, &FileInfo) == -1) { if (EC)
return error_code(errno, posix_category()); return EC;
} FileSize = Status.getSize();
FileSize = FileInfo.st_size;
} }
// If we need a null terminator and the end of the map is inside the file, // If we need a null terminator and the end of the map is inside the file,
@ -318,20 +317,20 @@ error_code MemoryBuffer::getOpenFile(int FD, const char *Filename,
// If we don't know the file size, use fstat to find out. fstat on an open // If we don't know the file size, use fstat to find out. fstat on an open
// file descriptor is cheaper than stat on a random path. // file descriptor is cheaper than stat on a random path.
if (FileSize == uint64_t(-1)) { if (FileSize == uint64_t(-1)) {
struct stat FileInfo; sys::fs::file_status Status;
// TODO: This should use fstat64 when available. error_code EC = sys::fs::status(FD, Status);
if (fstat(FD, &FileInfo) == -1) { if (EC)
return error_code(errno, posix_category()); return EC;
}
// If this not a file or a block device (e.g. it's a named pipe // If this not a file or a block device (e.g. it's a named pipe
// or character device), we can't trust the size. Create the memory // or character device), we can't trust the size. Create the memory
// buffer by copying off the stream. // buffer by copying off the stream.
if (!S_ISREG(FileInfo.st_mode) && !S_ISBLK(FileInfo.st_mode)) { sys::fs::file_type Type = Status.type();
if (Type != sys::fs::file_type::regular_file &&
Type != sys::fs::file_type::block_file)
return getMemoryBufferForStream(FD, Filename, result); return getMemoryBufferForStream(FD, Filename, result);
}
FileSize = FileInfo.st_size; FileSize = Status.getSize();
} }
MapSize = FileSize; MapSize = FileSize;
} }