Add support for MSVC

Tested with MSVC 8 32 and 64 bits.

src/jemalloc.c

@@ -56,12 +56,19 @@ static bool			malloc_initializer = NO_INITIALIZER;
 static malloc_mutex_t	init_lock;
 
 JEMALLOC_ATTR(constructor)
-static void
-init_init_lock()
+static void WINAPI
+_init_init_lock(void)
 {
 
 	malloc_mutex_init(&init_lock);
 }
+
+#ifdef _MSC_VER
+#  pragma section(".CRT$XCU", read)
+JEMALLOC_SECTION(".CRT$XCU") JEMALLOC_ATTR(used)
+static const void (WINAPI *init_init_lock)(void) = _init_init_lock;
+#endif
+
 #else
 static malloc_mutex_t	init_lock = MALLOC_MUTEX_INITIALIZER;
 #endif

src/tsd.c

@@ -93,6 +93,14 @@ _tls_callback(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 	return (true);
 }
 
+#ifdef _MSC_VER
+#  ifdef _M_IX86
+#    pragma comment(linker, "/INCLUDE:__tls_used")
+#  else
+#    pragma comment(linker, "/INCLUDE:_tls_used")
+#  endif
+#  pragma section(".CRT$XLY",long,read)
+#endif
 JEMALLOC_SECTION(".CRT$XLY") JEMALLOC_ATTR(used)
 static const BOOL	(WINAPI *tls_callback)(HINSTANCE hinstDLL,
     DWORD fdwReason, LPVOID lpvReserved) = _tls_callback;