add code for measuring memory consumption

libsharp/sharp_test.c

@@ -61,6 +61,7 @@
 #include "c_utils.h"
 #include "sharp_announce.h"
 #include "sharp_core.h"
+#include "memusage.h"
 
 typedef complex double dcmplx;
 
@@ -239,6 +240,8 @@ int main(int argc, char **argv)
   else
     UTIL_FAIL("unknown grid geometry");
 
+printf("\nMemory high water mark: %.2f MB\n",VmHWM()/(1<<20));
+
 #ifdef USE_MPI
   MPI_Finalize();
 #endif