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Change Path::getStatusInfo to return a boolean and error string on an error

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instead of throwing an exception.  This reduces the amount of code that is
exposed to exceptions (e.g. FileUtilities), though it is clearly only one step
along the way.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29395 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2006-07-28 22:03:44 +00:00
parent 3236ced25f
commit 252ad03d7d
11 changed files with 116 additions and 108 deletions
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lib/Support/FileUtilities.cpp
+16 -12
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@@ -146,19 +146,23 @@ int llvm::DiffFilesWithTolerance(const sys::Path &FileA,
const sys::Path &FileB,
double AbsTol, double RelTol,
std::string *Error) {
sys::FileStatus FileAStat, FileBStat;
if (FileA.getFileStatus(FileAStat, Error) ||
FileB.getFileStatus(FileBStat, Error))
return 2;
// Check for zero length files because some systems croak when you try to
// mmap an empty file.
size_t A_size = FileAStat.getSize();
size_t B_size = FileBStat.getSize();
// If they are both zero sized then they're the same
if (A_size == 0 && B_size == 0)
return 0;
// If only one of them is zero sized then they can't be the same
if ((A_size == 0 || B_size == 0))
return 1;
try {
// Check for zero length files because some systems croak when you try to
// mmap an empty file.
size_t A_size = FileA.getSize();
size_t B_size = FileB.getSize();
// If they are both zero sized then they're the same
if (A_size == 0 && B_size == 0)
return 0;
// If only one of them is zero sized then they can't be the same
if ((A_size == 0 || B_size == 0))
return 1;
// Now its safe to mmap the files into memory becasue both files
// have a non-zero size.
sys::MappedFile F1(FileA);