snapshot: print helper information when saving snapshots

src/test/csrc/compress.cpp

@@ -40,7 +40,7 @@ long snapshot_compressToFile(uint8_t *ptr, const char *filename, long buf_size)
     // assert(bytes_write % sizeof(long) == 0);
 
   }
-  printf("Write %lu bytes from gz stream in total\n", curr_size);
+  // printf("Write %lu bytes from gz stream in total\n", curr_size);
 
   delete [] temp_page;
 

src/test/csrc/emu.cpp

@@ -130,6 +130,7 @@ Emulator::~Emulator() {
 
 #ifdef VM_SAVABLE
   if (trapCode != STATE_GOODTRAP && trapCode != STATE_LIMIT_EXCEEDED) {
+    printf("Saving snapshots to file system. Please wait.\n");
     snapshot_slot[0].save();
     snapshot_slot[1].save();
     printf("Please remove unused snapshots manually\n");

src/test/csrc/snapshot.cpp

@@ -21,8 +21,8 @@ void VerilatedSaveMem::save() {
     assert(fp != NULL);
     fwrite(buf, size, 1, fp);
     fclose(fp);
-
-  } else {
+  }
+  else {
     saved_filename = saved_filename + ".gz";
     // timeval s, e;
     // gettimeofday(&s, NULL);