Modifying definition of Timer#memory_size on Linux to become resident size.

src/gsi/gsi/gsiDeclTl.cc

@@ -147,7 +147,11 @@ Class<tl::Timer> decl_Timer ("tl", "Timer",
   gsi::method ("memory_size", &tl::Timer::memory_size,
     "@brief Gets the current memory usage of the process in Bytes\n"
     "\n"
-    "This method has been introduced in version 0.27."
+    "The returned value is the resident memory size on Linux and MacOS and "
+    "the working set size on Windows.\n"
+    "\n"
+    "This method has been introduced in version 0.27. The value has been changed "
+    "to be resident size (instead of virtual size) on Linux in version 0.30."    
   ) +
   gsi::method ("user", &tl::Timer::sec_user, 
     "@brief Returns the elapsed CPU time in user mode from start to stop in seconds\n"

src/tl/tl/tlTimer.cc

@@ -245,8 +245,8 @@ Timer::memory_size ()
                               "%*d " // 0
                               "%*d " // itrealvalue
                               "%*u " // starttime
-                              "%lu " // vsize
-                              "%*d " // rss
+                              "%*u " // vsize
+                              "%lu " // rss
                               "%*u " // rlim
                               "%*u " // startcode
                               "%*u " // endcode
@@ -270,7 +270,8 @@ Timer::memory_size ()
       memsize = 0;
     }
   }
-  return size_t (memsize);
+
+  return size_t (memsize) * size_t (getpagesize ());
 
 #else
 #  error Unsupported platform