Add the magical incantations to get perftools to compile

cleanly under windows.  The only non-trivial one is the #undef
        of small, which I needed to compile under the latest cygwin --
        I ran g++ with -dD under cygwin and saw the '#define small
        char' with my own eyes.  I wouldn't have thought it...


git-svn-id: http://gperftools.googlecode.com/svn/trunk@129 6b5cf1ce-ec42-a296-1ba9-69fdba395a50

src/internal_logging.h

@@ -95,12 +95,12 @@ class LogItem {
   } u_;
 };
 
-extern void Log(LogMode mode, const char* filename, int line,
+extern PERFTOOLS_DLL_DECL void Log(LogMode mode, const char* filename, int line,
                 LogItem a, LogItem b = LogItem(),
                 LogItem c = LogItem(), LogItem d = LogItem());
 
 // Tests can override this function to collect logging messages.
-extern void (*log_message_writer)(const char* msg, int length);
+extern PERFTOOLS_DLL_DECL void (*log_message_writer)(const char* msg, int length);
 
 }  // end tcmalloc namespace
 

src/tcmalloc.cc

@@ -147,6 +147,9 @@
 # define WIN32_DO_PATCHING 1
 #endif
 
+// Some windows file somewhere (at least on cygwin) #define's small (!)
+#undef small
+
 using STL_NAMESPACE::max;
 using STL_NAMESPACE::numeric_limits;
 using STL_NAMESPACE::vector;

src/windows/port.h

@@ -65,14 +65,15 @@
 
 /*
  * 4018: signed/unsigned mismatch is common (and ok for signed_i < unsigned_i)
- * 4244: otherwise we get problems when substracting two size_t's to an int
+ * 4244: otherwise we get problems when subtracting two size_t's to an int
  * 4288: VC++7 gets confused when a var is defined in a loop and then after it
  * 4267: too many false positives for "conversion gives possible data loss"
  * 4290: it's ok windows ignores the "throw" directive
  * 4996: Yes, we're ok using "unsafe" functions like vsnprintf and getenv()
+ * 4146: internal_logging.cc intentionally negates an unsigned value
  */
 #ifdef _MSC_VER
-#pragma warning(disable:4018 4244 4288 4267 4290 4996)
+#pragma warning(disable:4018 4244 4288 4267 4290 4996 4146)
 #endif
 
 #ifndef __cplusplus