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author | Rafael Espindola <rafael.espindola@gmail.com> | 2013-06-18 19:34:49 +0000 |
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committer | Rafael Espindola <rafael.espindola@gmail.com> | 2013-06-18 19:34:49 +0000 |
commit | 605510d16ead87dc48a363addb8a99eca6e3f17c (patch) | |
tree | a208a08b79913daef0b721791882cadd75967cec /lib | |
parent | 13769fa725b03a937335cf04d2b9cc1ca426060f (diff) | |
download | llvm-605510d16ead87dc48a363addb8a99eca6e3f17c.tar.gz llvm-605510d16ead87dc48a363addb8a99eca6e3f17c.tar.bz2 llvm-605510d16ead87dc48a363addb8a99eca6e3f17c.tar.xz |
Add a GetUniqueID that will replace the uniqueID of PathV1.h.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184217 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
-rw-r--r-- | lib/Support/Unix/PathV2.inc | 12 | ||||
-rw-r--r-- | lib/Support/Windows/PathV2.inc | 14 |
2 files changed, 26 insertions, 0 deletions
diff --git a/lib/Support/Unix/PathV2.inc b/lib/Support/Unix/PathV2.inc index c98c21d07c..9ea4f9ed51 100644 --- a/lib/Support/Unix/PathV2.inc +++ b/lib/Support/Unix/PathV2.inc @@ -350,6 +350,18 @@ error_code file_size(const Twine &path, uint64_t &result) { return error_code::success(); } +error_code GetUniqueID(const Twine Path, uint64_t &Result) { + SmallString<128> Storage; + StringRef P = Path.toNullTerminatedStringRef(Storage); + + struct stat Status; + if (::stat(P.begin(), &Status) != 0) + return error_code(errno, system_category()); + + Result = Status.st_ino; + return error_code::success(); +} + error_code status(const Twine &path, file_status &result) { SmallString<128> path_storage; StringRef p = path.toNullTerminatedStringRef(path_storage); diff --git a/lib/Support/Windows/PathV2.inc b/lib/Support/Windows/PathV2.inc index ea383895f2..3b2992d5a3 100644 --- a/lib/Support/Windows/PathV2.inc +++ b/lib/Support/Windows/PathV2.inc @@ -413,6 +413,20 @@ error_code file_size(const Twine &path, uint64_t &result) { return error_code::success(); } +error_code GetUniqueID(const Twine Path, uint64_t &Result) { + // FIXME: this is only unique if the file is accessed by the same file path. + // How do we do this for C:\dir\file and ..\dir\file ? Unix has inode + // numbers, but the concept doesn't exist in Windows. + SmallString<128> Storage; + StringRef P = Path.toStringRef(Storage); + uint64_t UniqueID = 0; + for (StringRef::iterator I = P.begin(), E = P.end(); I != E; ++I) + UniqueID += *I; + Result = UniqueID; + + return error_code::success(); +} + static bool isReservedName(StringRef path) { // This list of reserved names comes from MSDN, at: // http://msdn.microsoft.com/en-us/library/aa365247%28v=vs.85%29.aspx |