[cmake-commits] king committed cmFileTimeComparison.cxx 1.6 1.7
cmFileTimeComparison.h 1.2 1.3
cmake-commits at cmake.org
cmake-commits at cmake.org
Thu Jan 3 00:01:40 EST 2008
Update of /cvsroot/CMake/CMake/Source
In directory public:/mounts/ram/cvs-serv956/Source
Modified Files:
cmFileTimeComparison.cxx cmFileTimeComparison.h
Log Message:
ENH: Add method cmFileTimeComparison::FileTimesDiffer to check if file times differ by 1 second or more.
Index: cmFileTimeComparison.h
===================================================================
RCS file: /cvsroot/CMake/CMake/Source/cmFileTimeComparison.h,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -d -r1.2 -r1.3
--- cmFileTimeComparison.h 15 Mar 2006 16:02:01 -0000 1.2
+++ cmFileTimeComparison.h 3 Jan 2008 05:01:38 -0000 1.3
@@ -40,6 +40,12 @@
*/
bool FileTimeCompare(const char* f1, const char* f2, int* result);
+ /**
+ * Compare file modification times. Return true unless both files
+ * exist and have modification times less than 1 second apart.
+ */
+ bool FileTimesDiffer(const char* f1, const char* f2);
+
protected:
cmFileTimeComparisonInternal* Internals;
Index: cmFileTimeComparison.cxx
===================================================================
RCS file: /cvsroot/CMake/CMake/Source/cmFileTimeComparison.cxx,v
retrieving revision 1.6
retrieving revision 1.7
diff -u -d -r1.6 -r1.7
--- cmFileTimeComparison.cxx 10 May 2006 19:46:45 -0000 1.6
+++ cmFileTimeComparison.cxx 3 Jan 2008 05:01:38 -0000 1.7
@@ -38,6 +38,8 @@
// Internal comparison method.
inline bool FileTimeCompare(const char* f1, const char* f2, int* result);
+ bool FileTimesDiffer(const char* f1, const char* f2);
+
private:
#if defined(CMAKE_BUILD_WITH_CMAKE)
// Use a hash table to efficiently map from file name to modification time.
@@ -59,6 +61,8 @@
inline bool Stat(const char* fname, cmFileTimeComparison_Type* st);
inline int Compare(cmFileTimeComparison_Type* st1,
cmFileTimeComparison_Type* st2);
+ inline bool TimesDiffer(cmFileTimeComparison_Type* st1,
+ cmFileTimeComparison_Type* st2);
};
//----------------------------------------------------------------------------
@@ -124,6 +128,12 @@
}
//----------------------------------------------------------------------------
+bool cmFileTimeComparison::FileTimesDiffer(const char* f1, const char* f2)
+{
+ return this->Internals->FileTimesDiffer(f1, f2);
+}
+
+//----------------------------------------------------------------------------
int cmFileTimeComparisonInternal::Compare(cmFileTimeComparison_Type* s1,
cmFileTimeComparison_Type* s2)
{
@@ -166,6 +176,66 @@
}
//----------------------------------------------------------------------------
+bool cmFileTimeComparisonInternal::TimesDiffer(cmFileTimeComparison_Type* s1,
+ cmFileTimeComparison_Type* s2)
+{
+#if !defined(_WIN32) || defined(__CYGWIN__)
+# if cmsys_STAT_HAS_ST_MTIM
+ // Times are integers in units of 1ns.
+ long long bil = 1000000000;
+ long long t1 = s1->st_mtim.tv_sec * bil + s1->st_mtim.tv_nsec;
+ long long t2 = s2->st_mtim.tv_sec * bil + s2->st_mtim.tv_nsec;
+ if(t1 < t2)
+ {
+ return (t2 - t1) >= bil;
+ }
+ else if(t2 < t1)
+ {
+ return (t1 - t2) >= bil;
+ }
+ else
+ {
+ return false;
+ }
+# else
+ // Times are integers in units of 1s.
+ if(s1->st_mtime < s2->st_mtime)
+ {
+ return (s2->st_mtime - s1->st_mtime) >= 1;
+ }
+ else if(s1->st_mtime > s2->st_mtime)
+ {
+ return (s1->st_mtime - s2->st_mtime) >= 1;
+ }
+ else
+ {
+ return false;
+ }
+# endif
+#else
+ // Times are integers in units of 100ns.
+ LARGE_INTEGER t1;
+ LARGE_INTEGER t2;
+ t1.LowPart = s1->dwLowDateTime;
+ t1.HighPart = s1->dwHighDateTime;
+ t2.LowPart = s2->dwLowDateTime;
+ t2.HighPart = s2->dwHighDateTime;
+ if(t1.QuadPart < t2.QuadPart)
+ {
+ return (t2.QuadPart - t1.QuadPart) >= static_cast<LONGLONG>(10000000);
+ }
+ else if(t2.QuadPart < t1.QuadPart)
+ {
+ return (t1.QuadPart - t2.QuadPart) >= static_cast<LONGLONG>(10000000);
+ }
+ else
+ {
+ return false;
+ }
+#endif
+}
+
+//----------------------------------------------------------------------------
bool cmFileTimeComparisonInternal::FileTimeCompare(const char* f1,
const char* f2,
int* result)
@@ -187,3 +257,23 @@
return false;
}
}
+
+//----------------------------------------------------------------------------
+bool cmFileTimeComparisonInternal::FileTimesDiffer(const char* f1,
+ const char* f2)
+{
+ // Get the modification time for each file.
+ cmFileTimeComparison_Type s1;
+ cmFileTimeComparison_Type s2;
+ if(this->Stat(f1, &s1) &&
+ this->Stat(f2, &s2))
+ {
+ // Compare the two modification times.
+ return this->TimesDiffer(&s1, &s2);
+ }
+ else
+ {
+ // No comparison available. Default to different times.
+ return true;
+ }
+}
More information about the Cmake-commits
mailing list